U.S. patent application number 15/682891 was filed with the patent office on 2017-12-28 for display panel.
The applicant listed for this patent is InnoLux Corporation. Invention is credited to Jui-Chu LAI, Huan-Kuang PENG, Chao-Hsiang WANG, Shih-Hsiung WU, Chung-Wen YEN.
Application Number | 20170371189 15/682891 |
Document ID | / |
Family ID | 58634550 |
Filed Date | 2017-12-28 |
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United States Patent
Application |
20170371189 |
Kind Code |
A1 |
YEN; Chung-Wen ; et
al. |
December 28, 2017 |
DISPLAY PANEL
Abstract
A display panel is provided. The display panel includes a first
substrate and a second substrate. The first substrate has a display
area and the second substrate is arranged opposite to the first
substrate. The display panel further includes a display layer. The
display layer is positioned between the first substrate and the
second substrate. The display panel also includes a sealant. The
sealant is positioned between the first substrate and the second
substrate and outside the display area. The sealant has an outline,
and at least one portion of the outline is wavy.
Inventors: |
YEN; Chung-Wen; (Miao-Li
County, TW) ; WANG; Chao-Hsiang; (Miao-Li County,
TW) ; WU; Shih-Hsiung; (Miao-Li County, TW) ;
PENG; Huan-Kuang; (Miao-Li County, TW) ; LAI;
Jui-Chu; (Miao-Li County, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
InnoLux Corporation |
Miao-Li County |
|
TW |
|
|
Family ID: |
58634550 |
Appl. No.: |
15/682891 |
Filed: |
August 22, 2017 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
15335596 |
Oct 27, 2016 |
9766505 |
|
|
15682891 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
Y02P 70/521 20151101;
H01L 51/0096 20130101; Y02P 70/50 20151101; G02F 2201/56 20130101;
H01L 51/5246 20130101; Y02E 10/549 20130101; G02F 1/1339
20130101 |
International
Class: |
G02F 1/1339 20060101
G02F001/1339 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 28, 2015 |
TW |
104135560 |
Claims
1. A display panel, comprising: a first substrate having a display
area; a second substrate arranged opposite to the first substrate;
a display layer positioned between the first substrate and the
second substrate; and a sealant positioned between the first
substrate and the second substrate and outside the display area,
wherein the sealant has an outline and at least one portion of the
outline is wavy.
2. The display panel as claimed in claim 1, wherein the first
substrate comprises a first lateral edge, and a width of a part of
the sealant in a direction perpendicular to the first lateral edge
of the first substrate changes in the narrow-wide-narrow
manner.
3. The display panel as claimed in claim 2, wherein the first
substrate further comprises a second lateral edge connected to the
first lateral edge via an intersection point, wherein the part of
the sealant is positioned adjacent to the intersection point.
4. The display panel as claimed in claim 3, wherein the first
substrate further comprises a third lateral edge, wherein the first
lateral edge, the second lateral edge and the third lateral edge
are straight, and a first included angle formed between the first
lateral edge and the second lateral edge is less than a second
included angle formed between the second lateral edge and the third
lateral edge.
5. The display panel as claimed in claim 1, wherein the sealant
extends along a path, and a width of a part of the sealant in a
direction perpendicular to the path changes in a narrow-wide-narrow
manner.
6. The display panel as claimed in claim 5, wherein the path
comprises a first straight path, a curved path, and a second
straight path, the curved path is between the first straight path
and the second straight path, and the part of the sealant extends
along the curved path.
7. The display panel as claimed in claim 1, wherein the sealant
comprises a first straight segment, a curved segment and a second
straight segment, and the curved segment is between the first
straight segment and the second straight segment.
8. The display panel as claimed in claim 7, wherein the at least
one portion of the outline is positioned corresponding to the
curved segment.
9. The display panel as claimed in claim 1, wherein the at least
one portion of the outline is positioned adjacent to a lateral edge
of the first substrate.
10. The display panel as claimed in claim 1, wherein the at least
one portion of the outline is positioned adjacent to the display
layer.
11. The display panel as claimed in claim 1, wherein the sealant
comprises: a first curved segment; and a second curved segment;
wherein the first curved segment has a first rotation radius (r1)
and the second curved segment has a second rotation radius (r2);
wherein the first rotation radius (r1) is greater than the second
rotation radius (r2).
12. The display panel as claimed in claim 11, wherein the first
rotation radius (r1) and the second rotation radius (r2) satisfy
the equation: 0<r2/r1<1.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of application Ser. No.
15/335,596, filed on Oct. 27, 2016, which claims the priority of
Taiwan Patent Application No. 104135560, filed on Oct. 28, 2015,
the disclosure of which is hereby incorporated by reference herein
in its entirety.
BACKGROUND
Field of the Invention
[0002] The present disclosure relates to an electronic device, and
more particularly to an electronic display panel with
non-rectangular shape and a method for processing the display
panel.
Description of the Related Art
[0003] An electronic display is an optoelectronic device that is
able to transfer electric signals into visible images so that human
beings can see the information contained in the electronic signals.
Recently, liquid-crystal displays, organic electro luminescence
displays and light-emitting diode display have grown in
popularity.
[0004] Because of their slimness, low power consumption and low
radiation, these image-display devices have been widely used in
portable electronic devices such as TV, desktop computers, notebook
computers, tablet, and mobile phones, and are even gradually
replacing cathode ray tube (CRT) monitors and conventional TVs.
SUMMARY
[0005] In accordance with some embodiments of the disclosure, a
display panel is provided. The display panel includes a first
substrate and a second substrate. The first substrate has a display
area and the second substrate is arranged opposite to the first
substrate. The display panel further includes a display layer. The
display layer is positioned between the first substrate and the
second substrate. The display panel also includes a sealant. The
sealant is positioned between the first substrate and the second
substrate and located outside the display area. The sealant has an
outline, and at least a portion of the outline is wavy.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] For a more complete understanding of the embodiments and the
advantages thereof, reference is now made to the following
descriptions taken in conjunction with the accompanying
drawings.
[0007] FIG. 1 shows a cross-sectional view of a display panel, in
accordance with some embodiments.
[0008] FIG. 2 shows a top view of a portion of elements of a
display panel, in accordance with some embodiments.
[0009] FIG. 3 shows a schematic view explaining a definition of a
manufacturing variance and a definition of a pitch between node
centers, in accordance with some embodiments.
[0010] FIG. 4 shows a flow chart of a method for applying a curved
segment of a sealant, in accordance with some embodiments.
[0011] FIG. 5 shows an enlarged view of a region in FIG. 2 near an
intersection point 112, in accordance with some embodiments.
[0012] FIG. 6 shows a flow chart of a method for applying a curved
segment of a sealant, in accordance with some embodiments.
[0013] FIG. 7 shows an enlarged view of a region in FIG. 2 near an
intersection point 114, in accordance with some embodiments.
[0014] FIG. 8 shows a schematic view of a sealant, in accordance
with some embodiments.
[0015] FIG. 9 shows an image of a display panel observed with a
microscope, in accordance with some embodiments.
[0016] FIG. 10 shows an image of a display panel observed with a
microscope, in accordance with some embodiments.
[0017] FIG. 11 shows a schematic view of a display panel, in
accordance with some embodiments.
[0018] FIG. 12 shows an image of a display panel observed with a
microscope, in accordance with some embodiments.
DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENTS
[0019] The display panel of the present disclosure is described in
detail in the following description. In the following detailed
description, for purposes of explanation, numerous specific details
and embodiments are set forth in order to provide a thorough
understanding of the present disclosure. The specific elements and
configurations described in the following detailed description are
set forth in order to clearly describe the present disclosure. It
will be apparent, however, that the exemplary embodiments set forth
herein are used merely for the purpose of illustration, and the
inventive concept may be embodied in various forms without being
limited to those exemplary embodiments. In addition, the drawings
of different embodiments may use like and/or corresponding numerals
to denote like and/or corresponding elements in order to clearly
describe the present disclosure. However, the use of like and/or
corresponding numerals in the drawings of different embodiments
does not suggest any correlation between different embodiments.
Furthermore, the attached drawings may be drawn in a slightly
simplified or exaggerated way for ease of understanding; the
numbers, shapes and dimensional scales of elements depicted may not
be exactly the same as those in practical implementation and are
not intended to limit the present disclosure.
[0020] It should be noted that the elements or devices in the
drawings of the present disclosure may be present in any form or
configuration known to those skilled in the art. In addition, the
expression "a layer overlying another layer", "a layer is disposed
above another layer", "a layer is disposed on another layer" and "a
layer is disposed over another layer" may indicate not only that
the layer directly contacts the other layer, but also that the
layer does not directly contact the other layer, there being one or
more intermediate layers disposed between the layer and the other
layer.
[0021] In this specification, relative expressions are used. For
example, "lower", "bottom", "higher" or "top" are used to describe
the position of one element relative to another. It should be
appreciated that if a device is flipped upside down, an element at
a "lower" side will become an element at a "higher" side.
[0022] The terms "about" and "substantially" typically mean +/-20%
of the stated value, more typically +/-10% of the stated value and
even more typically +/-5% of the stated value. The stated value of
the present disclosure is an approximate value. When there is no
specific description, the stated value includes the meaning of
"about" or "substantially".
[0023] FIG. 1 shows a cross-sectional view of a display panel 1, in
accordance with some embodiments. In some embodiments, the display
panel 1 includes a first substrate 10, a second substrate 20, a
display layer 30, and a sealant 40. The elements of the display
panel 1 can be added or omitted, and the disclosure should not be
limited by the embodiment. The first substrate 10 and the second
substrate 20 may be a rigid substrate or a flexible substrate. The
rigid substrate may comprise but not limit to glass, sapphire or
ceramic. The flexible substrate may comprise polyimide (PI),
polyethylene terephthalate (PET), polycarbonate (PC), or other
suitable organic materials. The display layer 30 may be liquid
crystal, organic light-emitting diode, or light emitting diode.
[0024] The display panel 1 may be a liquid-crystal panel, such as
thin film transistor panel. Alternatively, the display panel 1 may
be a twisted nematic (TN) mode liquid-crystal panel, a vertical
aligned (VA) mode liquid-crystal panel, an in-plane switching (IPS)
mode liquid-crystal panel, a fringe field switching (FFS) mode
liquid-crystal panel, a cholesteric mode liquid-crystal panel, a
blue phase in-plane switching (IPS) mode liquid-crystal panel, or
another suitable liquid-crystal panel. The display panel 1 may be
an organic light-emitting diode (OLED) panel, a light-emitting
diode (LED) panel, a micro light-emitting diode (micro LED) panel
and a quantum dot (QD) panel.
[0025] In some embodiments, the second substrate 20 is spaced apart
from the first substrate 10 by a distance and covers the first
substrate 10. The display layer 30 is positioned between the first
substrate 10 and the second substrate 20. The display layer 30 is
operated according to electronic signals from the driving unit (not
shown in figures) so as to show images. The first substrate 10 may
be a thin film transistor (TFT) substrate and include a number of
pixels and switching elements. The second substrate 20 may be a
color filter substrate or a transparent cover substrate. The first
substrate 10 or the second substrate 20 may be equipped with touch
functionality.
[0026] The sealant 40 is connected between the first substrate 10
and the second substrate 20. The sealant 40 may surround the
display layer 30. Or, the sealant 40 may not surround the display
layer 30 but may be applied neighboring a portion of the display
layer 30. In one embodiment, the sealant 40 is applied on the first
substrate 10 (or the second substrate 20) along a path with a
rectangular shape or non-rectangular shape. The path is defined
according to the shape of the outer edge of the first substrate 10
(or the second substrate 20). Alternatively, the path is defined
according to the shape of the display area AA. In one embodiment,
the sealant 40 is applied between an edge of the first substrate 10
and an edge of the display area AA. In other words, the sealant 40
is applied on a non-display area. In one embodiment, the
non-display area is located between an edge of the first substrate
10 and an edge of the display area AA. In one embodiment, the
display area AA is an area where display elements for display
images are positioned.
[0027] FIG. 2 shows a top view of a portion of the display panel 1,
in accordance with some embodiments. In one embodiment, the first
substrate 10 is not rectangular, and it includes a number of
lateral edges 111, 113, and 115 which are consecutively connected
to one another. The lateral edge 111 connects to the lateral edge
113 via an intersection point 112, and the lateral edge 113
connects to the lateral edge 115 via an intersection point 114. In
the embodiment shown in FIG. 2, the included angle formed by the
two lateral edges 111 and 113 is larger than the included angle
formed by the two lateral edges 113 and 115. In one embodiment, the
two lateral edges 113 and 115 are straight, and the included angle
is an angle less than 180 degree.
[0028] In one embodiment, the sealant 40 is applied on the first
substrate 10 along a path with a non-rectangular shape. The path
includes a number of straight paths (such as first straight path
st1, second straight path st2, and third straight path st3) and a
number of curved paths (such as first curved path ct1 and second
curved path ct2).
[0029] Specifically, during the process of forming the sealant 40,
a first straight segment 41 is formed on the first substrate 10
along the first straight path st1, wherein the first straight path
st1 is parallel to the lateral edge 111 and spaced apart from the
lateral edge 111 by a distance. Afterwards, a curved segment 42 is
formed on the first substrate 10 along the first curved path ct1
which is adjacent to the intersection point 112. It should be
understood that a "straight segment" means that this segment of the
sealant is formed on a substrate along a straight path. Therefore,
its shape is substantially straight. Considering the sealant is
fluid, the straight segment may also be called a substantially
straight segment.
[0030] Afterwards, a second straight segment 43 is formed on the
first substrate 10 along the second straight path st2, wherein the
second straight path st2 is parallel to the lateral edge 113 and
spaced apart from the lateral edge 113 by a distance. Afterwards, a
curved segment 44 is formed on the first substrate 10 along the
second curved path ct2 which is adjacent to the intersection point
114. Afterwards, a third straight segment 45 is formed on the first
substrate 10 along the third straight path st3, wherein the third
straight path st3 is parallel to the lateral edge 115 and spaced
apart from the lateral edge 115 by a distance.
[0031] The distance between the first, second, and third straight
paths st1, st2, st3 and their corresponding lateral edges 111, 113,
and 115 may be the same or different. As shown in FIG. 2, a circle
(shown in right hand side of FIG. 2) is tangential to the first
straight path st1 and the second straight path st2, wherein the
first curved path ct1 is an arc of the circle, and the rotation
radius r.sub.1 of the curved path ct1 equals to the radius of the
circle. In addition, a circle (shown in left hand side of FIG. 2)
is tangential to the second straight path st2 and the third
straight path st3, wherein the second curved path ct2 is an arc of
the circle, and the rotation radius r.sub.2 of the curved path ct2
equals to the radius of the circle. In other words, the rotation
radius of a curved path is equal to the radius of curvature of the
curved path.
[0032] During the process of applying the sealant 40 over the first
and the second curved paths ct1 and ct2, the movement of a nozzle
70 for applying the sealant 40 is controlled by a controller (such
as robot arm, not shown in the figures). However, in some
embodiments of the disclosure, the nozzle 70 is not moved along the
first and the second curved paths ct1 and ct2 precisely. On the
contrary, the nozzle 70 is moved along multiple straight lines, and
each straight line is connected by two neighboring nodes on the
first curved paths ct1 or the second curved path ct2. Additionally,
during the movement of the nozzle 70 along a straight line between
two neighboring nodes, the nozzle 70 moves with acceleration that
varies. Details of the method for moving the nozzle will be
described in the descriptions regarding to the embodiments shown in
FIGS. 5 and 7. By controlling the movement of the nozzle 70 among
the nodes, the sealant 40 is applied on the first substrate 10 with
high efficiency. On the other hand, the manufacturing time required
for producing the display panel 1 is reduced.
[0033] In the following description, the maximum distance between
the straight line connecting two neighboring nodes and its
corresponding curved path is defined as a manufacturing variance.
In one embodiment, the curved path is an arc. The arc of a circle
is constructed by three of the nodes. However, the method of
constructing a circle is not limited to the above mentioned method.
In the process of applying the sealant 40 over the same curved
path, with the increase of the number of nodes, the manufacturing
variance is decreased and the shape of the curved segment is highly
compatible with the curved path. In this case, a longer
manufacturing time is required. On the contrary, with the decrease
of the number of nodes, the manufacturing variance is increased and
the shape of the curved segment is roughly compatible with the
curved path. In this case, however, the sealant 40 can be applied
with a shorter manufacturing time.
[0034] Therefore, as shown in FIG. 3, the curved path ct has a
rotation radius r. By applying an infinite number of nodes on the
curved path ct, a manufacturing variance for applying the sealant
would be approximately zero. On the other hand, by applying a
finite number of nodes on the curved path ct, a manufacturing
variance for applying the sealant would be approximately .mu..
Then, according to the trigonometry, we can get the following
equation:
0<r-r cos(.theta./2).ltoreq..mu.
Then, we define the shortest distance between two neighboring nodes
is a distance D. If the manufacturing variance is zero, the
distance D would be zero. If the manufacturing variance is .mu.,
according to the trigonometry, the distance D can be calculated
from the following equations:
D = 2 r sin ( .theta. 2 ) = 2 r .times. 2 .mu. r - ( .mu. r ) 2 = 2
.mu. ( 2 r - .mu. ) ##EQU00001##
According to the above result, we can conclude that, under a fixed
manufacturing variance, the distance D is greater when the rotation
radius r is greater. In other words, the distance D may be
approximately proportional to the square root of the rotation
radius r:
D.varies. {square root over (r)}
[0035] Based on the above relationship, during the manufacturing of
the same display panel, if the manufacturing variance is fixed, a
larger rotation radius r of the curved path makes a larger distance
D.
[0036] In one embodiment, a manufacturing variance .mu. is given,
the distance D may satisfy the following equation:
0<D.ltoreq.2.mu. {square root over ((2r-.mu.))}
[0037] In one embodiment, a minimum manufacturing variance
.mu..sub.1 is given and a maximum manufacturing variance .mu..sub.2
is given, the distance D may satisfy the following equation:
2 {square root over (.mu..sub.1(2r-.mu..sub.1))}<D.ltoreq.2
{square root over (.mu..sub.2(2r-.mu..sub.2))}
[0038] However, the manufacturing variance may be varied in
different regions of the non-display area of the display panel.
Therefore, under a variable manufacturing variance, a larger
rotation radius r does not necessarily result in a larger distance
D.
[0039] In some embodiments, to avoid the display area AA being
affected by the curved segment of the sealant, or to avoid the
sealant leaking outside of the first substrate 10, the
manufacturing variance for applying the curved segment of the
sealant 40 is determined based on the distance d between the
display area AA and the edge of the substrate. For example, as
shown in FIG. 2, the lateral edge 111 of the display panel 1 is
spaced apart from the edge 120 of the display area AA by a distance
d.sub.1, and the lateral edge 115 of the display panel 1 is spaced
apart from the edge 120 of the display area AA by a distance
d.sub.2, wherein the distance d.sub.2 is equals to the distance
d.sub.1. Therefore, the manufacturing variance for applying the
curved segment 42 of the sealant 40 is substantially the same as
the manufacturing variance for applying the curved segment 44 of
the sealant 40. In some embodiments, a sealant comprises multiple
curved segments and the one curved segment having the biggest
rotation radius r may satisfy the above equation.
[0040] In some embodiments, the manufacturing variance for applying
the curved segment of the sealant equals to the distance d between
the lateral edge of the substrate and the edge of the display area
AA. Or, the value of the manufacturing variance may be adjusted
according to different requirements of the display panel. For
example, the manufacturing variance may be 10 .mu.m, 50 .mu.m, 100
.mu.m, 150 .mu.m, or 200 .mu.m, but the disclosure should not be
limited thereto. According to the preset manufacturing variance,
the operator determines the number of node for applying the sealant
on the corresponding curved path. In cases where the distance d
between the lateral edge of the substrate and the edge of the
display area AA is selected as the manufacturing variance, the
distance D between two neighboring nodes may satisfy the following
equation:
0<D.ltoreq.2 {square root over (d(2r-d))}
[0041] In one embodiment, a minimum manufacturing variance is 10
.mu.m and a maximum manufacturing variance is 200 .mu.m. Then, the
distance D satisfies the following range:
2 {square root over (10(2r-10))}.ltoreq.D.ltoreq.2 {square root
over (200(2r-200))}
wherein r and D in unit of micrometer
[0042] FIG. 4 is a flow chart illustrating a method 5 for applying
the curved segment 42 of the sealant 40, in accordance with some
embodiments. For illustration, the flow chart will be described
along with the schematic views shown in FIG. 5. Some of the steps
described in FIG. 4 can be replaced or eliminated for different
embodiments.
[0043] Method 5 for applying the curved segment 42 of the sealant
40 is described below:
[0044] The method 5 begins with step 50, in which sealant material
is applied by the nozzle 70. In step 51 the speed of the nozzle 70
is decreased with a negative acceleration a1. In addition, as shown
in FIG. 5, the nozzle 70 is moved from an initial point n0 of the
curved segment 42 to a node na1 at the first curved path ct1 which
is immediately adjacent to the initial point n0. During this
process, sealant material is continuously supplied from the nozzle
70 and is applied on the first substrate 10, and the speed of the
nozzle 70 gradually decreases from a preset speed V0 at which the
nozzle 70 is moved to apply the straight segment 41. As a result,
the width of the sealant gradually increases to width B. In some
embodiments, when the nozzle 70 reaches the node na1, the speed of
the nozzle 70 is 0. In some embodiments, when the nozzle 70 reaches
the node na1, the speed of the nozzle 70 is still greater than
0.
[0045] In some embodiments, before applying the curved segment 42,
the nozzle 70 is moved along the first straight path st1 at the
preset speed V0, and the sealant material is supplied from the
nozzle 70 at a fixed flow rate to form the straight segment 41 of
the sealant 40 on the first substrate 10, wherein the width of the
straight segment 41 of the sealant 40 is A. In some embodiments,
the nozzle 70 is moved from the initial point n0 of the curved
segment 42 to the node na1 along the first straight path st1.
[0046] In step 52, the speed of the nozzle 70 is increased with a
positive acceleration a2. In addition, as shown in FIG. 5, the
nozzle 70 is moved from the node na1 to a middle point of a
straight line S1 between the node na1 and the node na2. During this
process, sealant material is continuously supplied from the nozzle
70 and is applied on the first substrate 10, and the speed of the
nozzle 70 gradually increases. As a result, the width of the
sealant gradually decreases to width C.
[0047] In some embodiments, the nozzle 70 reaches the middle point
of the straight line S1 at speed V1, and the speed V1 is greater
than the speed V0 at which the nozzle 70 is moved to apply the
straight segment 41. Alternatively, the nozzle 70 reaches the
middle point of the straight line S1 at speed V1, and the speed V1
is less than the speed V0 at which the nozzle 70 is moved to apply
the straight segment 41. Alternatively, the nozzle 70 reaches the
middle point of the straight line S1 at speed V1, and the speed V1
equals to the speed V0 at which the nozzle 70 is moved to apply the
straight segment 41. In some embodiments, the step 52 terminates as
the nozzle 70 reaches a position behind or ahead of the middle
point of the straight line S1.
[0048] In step 53, the speed of the nozzle 70 is decreased with a
negative acceleration a3. In addition, as shown in FIG. 5, the
nozzle 70 is moved from the middle point of the straight line S1 to
the node na2 along the straight line S1. During this process,
sealant material is continuously supplied from the nozzle 70 and is
applied on the first substrate 10, and the speed of the nozzle 70
gradually decreases. As a result, the width of the sealant
gradually increases again.
[0049] In some embodiments, the nozzle 70 is moved at the
acceleration a1 and the acceleration a3 for the same time period,
and the acceleration a1 equals to the acceleration a3. Therefore,
the sealant at the node na2 has the same width B as the sealant at
the node na1; however, the disclosure should not be limited
thereto. In some other embodiments, the acceleration a1 is
different from the acceleration a3, and thus the width of the
sealant 40 at the node na1 is different from the width of sealant
at the node na2.
[0050] Afterwards, the sealant material is applied on the first
substrate 10 along a straight line between the nodes na2 and na3,
and along a straight line between the nodes na3 and na4, and along
a straight line between the nodes na4 and na5 by the method similar
to the steps 52 and 53.
[0051] In step 54, the speed of the nozzle 70 is increased with a
positive acceleration a2. In addition, as shown in FIG. 5, the
nozzle 70 is moved from the node na5 to an end point n1 of the
curved segment 42 along the second straight path st2. During this
process, sealant material is continuously supplied from the nozzle
70 and is applied on the first substrate 10, and the speed of the
nozzle 70 gradually increases. As a result, the width of the
sealant gradually decreases. In some embodiments, the step 54 is
not stopped until the speed of the nozzle 70 is increased to the
preset speed V0 at which the nozzle 70 is moved to apply the
straight segment 41.
[0052] In the above-mentioned embodiments, the nodes na1-na5 are
separated by the same distance D.sub.1, and the distance D between
the two neighboring node centers may satisfy the following
equation:
0<D.sub.1.ltoreq.2 {square root over
(.mu..sub.1(2r.sub.1-.mu..sub.1))}
[0053] where r.sub.1 is the rotation radius of the first curved
path ct1, .mu..sub.1 is the manufacturing variance utilized for
applying the curved segment 42. In one embodiment, If the
manufacturing variance .mu..sub.1 is substituted with the distance
d.sub.1 between the lateral edge 111 of the substrate and the edge
of the display area AA, the distance D.sub.1 may satisfy the
following equation:
0<D.sub.1.ltoreq.2 {square root over
(d.sub.1(2r.sub.1-d.sub.1))}
[0054] In one embodiment, If the manufacturing variance .mu..sub.1
is substituted with the distance 200 .mu.m, the distance D.sub.1
may satisfy the following equation:
0<D.sub.1.ltoreq.2 {square root over (200(2r.sub.1-200))}
[0055] wherein r.sub.1 and D.sub.1 in unit of micrometer
[0056] Further, If a minimum manufacturing variance is substituted
with the distance 10 .mu.m, the distance D.sub.1 may satisfy the
following equation:
2 {square root over (10(2r.sub.1-10))}<D.sub.1.ltoreq.2 {square
root over (200(2r.sub.1-200))}
[0057] wherein r.sub.1 and D.sub.1 in unit of micrometer
[0058] In some embodiments, the curved segment 42 defines one
sealant node 421 at each of the nodes na1-na5. Each of the sealant
nodes 421 is located within a range of a circle-like shape and the
width of each sealant node 421 changes in a narrow-wide-narrow
manner. For example, as shown in FIG. 5, the width of the sealant
node 421 changes in a A-B-C manner, wherein the width B is greater
than the width A as well as the width C. The centers of the sealant
nodes 421 are respectively located at the nodes na1-na5, and the
radius of the sealant node 421 is smaller than 0.5 times of the
distance D.sub.1. In addition, the curved segment 42 defines a
connection portion 423 between the two neighboring nodes 421. The
sealant node 421 has a larger width of B and the connection portion
423 has a smaller width of C. The width B is greater than the width
A of the straight segment 41, and the width A of the straight
segment 41 is greater than or equals to the width C of the
connection portion 423. In some embodiments, the widths A, B, and C
are respectively measured in a direction perpendicular to the first
curved path ct1.
[0059] FIG. 6 is a flow chart illustrating a method 6 for applying
the curved segment 44 of the sealant 40, in accordance with some
embodiments. For illustration, the flow chart will be described
along with the schematic views shown in FIG. 7. Some of the steps
described in FIG. 6 can be replaced or eliminated for different
embodiments.
[0060] Method 6 for applying the curved segment 44 of the sealant
40 is described below:
[0061] The method 6 begins with step 60, in which sealant material
is applied by the nozzle 70. In step 61, the speed of the nozzle 70
is decreased with a negative acceleration a1. In addition, as shown
in FIG. 7, the nozzle 70 is moved from an initial point n2 of the
curved segment 44 to a node nb1 at the second curved path ct2 which
is immediately adjacent to the initial point n2. During this
process, sealant material is continuously supplied from the nozzle
70 and is applied on the first substrate 10, and the speed of the
nozzle 70 gradually decreases from a preset speed V0 at which the
nozzle 70 is moved to apply the straight segment 43. As a result,
the width of the sealant gradually increases to width B. In some
embodiments, when the nozzle 70 reaches the node nb1, the speed of
the nozzle 70 is 0. In some embodiments, when the nozzle 70 reaches
the node nb1, the speed of the nozzle 70 is still greater than
0.
[0062] In some embodiments, before applying the curved segment 44,
the nozzle 70 is moved along the second straight path st2 at the
preset speed V0, and the sealant material is supplied from the
nozzle 70 in a fixed flow rate to form the straight segment 43 of
the sealant 40 on the first substrate 10, wherein the width of the
straight segment 43 of the sealant 40 is A. In some embodiments,
the nozzle 70 is moved from the initial point n2 of the curved
segment 44 to the node nb1 along the second straight path st2.
[0063] In step 62, the speed of the nozzle 70 is increased with a
positive acceleration a2. In addition, as shown in FIG. 7, the
nozzle 70 is moved from the node nb1 to a middle point of a
straight line S2 between the node nb1 and the node nb2. During this
process, sealant material is continuously supplied from the nozzle
70 and is applied on the first substrate 10, and the speed of the
nozzle 70 gradually increases. As a result, the width of the
sealant gradually decreases to width D.
[0064] In some embodiments, the nozzle 70 reaches the middle point
of the straight line S2 at speed V2, and the speed V2 is greater
than the speed V0 at which the nozzle 70 is moved to apply the
straight segment 43. Alternatively, the nozzle 70 reaches the
middle point of the straight line S2 at speed V2, and the speed V2
equals to the speed V0 at which the nozzle 70 is moved to apply the
straight segment 43. Alternatively, the nozzle 70 reaches the
middle point of the straight line S2 at speed V2, and the speed V2
is less than the speed V0 at which the nozzle 70 is moved to apply
the straight segment 41. In some embodiments, the step 62
terminates as the nozzle 70 reaches a position behind or ahead of
the middle point of the straight line S2.
[0065] In step 63, the speed of the nozzle 70 is decreased with a
negative acceleration a3. In addition, as shown in FIG. 7, the
nozzle 70 is moved from the middle point of the straight line S2 to
the node nb2 along the straight line S2. During this process,
sealant material is continuously supplied from the nozzle 70 and is
applied on the first substrate 10, and the speed of the nozzle 70
gradually decreases. As a result, the width of the sealant
gradually increases again.
[0066] In some embodiments, the nozzle 70 is moved at the
acceleration a1 and the acceleration a3 for the same time period,
and the acceleration a1 equals to the acceleration a3. Therefore,
the sealant at the node nb2 has the same width B as the sealant at
the node nb1; however, the disclosure should not be limited
thereto. In some other embodiments, the acceleration a1 is
different from the acceleration a3, and thus the width of sealant
at the node nb1 is different from the width of the sealant at the
node nb2.
[0067] Afterwards, the sealant material is applied on the first
substrate 10 along a straight line between the nodes nb2 and nb3,
and along a straight line between the nodes nb3 and nb4, and along
a straight line between the nodes nb4 and nb5 by the method similar
to the steps 62 and 63.
[0068] In step 64, the speed of the nozzle 70 is increased with a
positive acceleration a2. In addition, as shown in FIG. 7, the
nozzle 70 is moved from the node nb5 to an end point n3 of the
curved segment 44 along the third straight path st3. During this
process, sealant material is continuously supplied from the nozzle
70 and is applied on the first substrate 10, and the speed of the
nozzle 70 gradually increases. As a result, the width of the
sealant gradually decreases. In some embodiments, the step 64 is
not stopped until the speed of the nozzle 70 is increased to the
preset speed V0 at which the nozzle 70 is moved to apply the
straight segment 43.
[0069] In the above-mentioned embodiments, the nodes nb1-nb5 are
separated by the same distance D.sub.2, and the distance D.sub.2
between the two neighboring node may satisfy the following
equation:
0<D.sub.2.ltoreq.2 {square root over
(.mu..sub.2(2r.sub.2-.mu..sub.2))}
[0070] where r.sub.2 is the rotation radius of the second curved
path ct2, .mu..sub.2 is the manufacturing variance utilized for
applying the curved segment 44. If the manufacturing variance
.mu..sub.2 is substituted with the distance d.sub.2 between the
lateral edge 115 of the substrate and the edge of the display area
AA, the distance D.sub.2 may satisfy the following equation:
0<D.sub.2.ltoreq.2 {square root over
(d.sub.2(2r.sub.2-d.sub.2))}
[0071] In one embodiment, If the manufacturing variance .mu..sub.2
is substituted with the distance 200 .mu.m, the distance D.sub.2
may satisfy the following equation:
0<D.sub.2.ltoreq.2 {square root over (200(2r.sub.2-200))}
[0072] wherein r.sub.2 and D.sub.2 in unit of micrometer
[0073] In some embodiments, the curved segment 44 defines one
sealant node 441 at each of the nodes nb1-nb5. Each of the sealant
nodes 441 is located within a range of a circle-like shape and the
width of each sealant node 441 changes in a narrow-wide-narrow
manner. The centers of the sealant nodes 441 are respectively
located at the nodes na1-na5, and the radius of the sealant nodes
441 is smaller than 0.5 times of the distance D.sub.2. In addition,
the curved segment 44 defines an overlapping portion 443 at which
the two neighboring sealant nodes 441 overlap. The sealant node 441
has a larger width B and the overlapping portion 443 has a smaller
width D. The width B is greater than the width A of the straight
segment 41. The width A of the straight segment 41 is smaller than
the width D. In some embodiments, the width A of the straight
segment 41 is equal to or larger than the width D. In some
embodiments, the widths A, B, and D are measured in a direction
perpendicular to the second curved path ct2.
[0074] Referring to FIG. 2 and with reference to FIGS. 4 and 6, in
some embodiments, the manufacturing variances for applying the
first curved segment 42 and the second curved segment 44 are
assumed to be the same value. Therefore, according to the following
equation:
D.varies. {square root over (r)}
[0075] The rotation radius r.sub.2 of the second curved path ct2 is
smaller than the rotation radius r.sub.1 of the first curved path
ct1, so the distance D.sub.2 between two neighboring sealant nodes
441 is smaller than the distance D.sub.1 between two neighboring
sealant nodes 421. Namely, under the same manufacturing variance,
the rotation radius r.sub.1 and the rotation radius r.sub.2 may
satisfy the relation of 0<r.sub.2/r.sub.1<1, and the distance
D.sub.1 and the distance D.sub.2 may satisfy the relation of
0<D.sub.2/D.sub.1<1.
[0076] FIG. 8 shows a schematic view of the sealant 40, in
accordance with some embodiments. In some embodiments, the sealant
40 further includes a curved segment 46. The curved segment 46
includes a number of sealant nodes 461, and the sealant nodes 461
have their node nc1-nc5 arranged on a third curved path ct3. In
addition, the curved segment 46 includes a number of connection
portions 463 positioned between the two neighboring sealant nodes
461.
[0077] In some embodiments, the maximum distance between the outer
edge 4612 of the sealant node 461 (i.e., an edge of the sealant
node 461 which is away from the display area AA) and the third
curved path ct3, is greater than the maximum distance between the
inner edge 4614 of the sealant node 461 (i.e., an edge of the
sealant node 461 which is close to the display area AA) and the
third curved path ct3.
[0078] Specifically, as shown in FIG. 8, the outer edge 4612 the
sealant node 461 includes a first end point p1, a second end point
p2, and a third end point p3, wherein the first and the second end
points p1 and p2 are separated by a predetermined distance, and the
second and the third end points p2 and p3 are separated by the same
predetermined distance. Moreover, the inner edge 4614 of the
sealant node 461 includes a fourth end point p4, a fifth end point
p5, and a sixth end point p6, wherein the fourth and the fifth end
points p4 and p5 are separated by the predetermined distance, and
the fifth and the sixth end points p5 and p6 are separated by the
predetermined distance. In the embodiment, an area enclosed by the
first end point p1, the second end point p2, and the third end
point p3 is greater than an area enclosed by the fourth point p4,
the fifth point p5, and the sixth point p6. In more detail, an area
enclosed by connection lines between an arbitrary two of the first
point p1, the second point p2, and the third point p3, is greater
than an area enclosed by connection lines between an arbitrary two
of the fourth point p4, the fifth point p5, and the sixth point
p6.
[0079] In some embodiments, the inner edge 4614 of the node 461 is
closer to the third curved path ct3 than the neighboring connection
portion 463. Namely, the distance between the inner edge 4614 of
the node 461 and the third curved path ct3 is smaller than the
distance between the connection portion 463 and the third curved
path ct3.
[0080] In the embodiment shown in FIG. 8, due to the feature that
the inner edge 4614 of the curved segment 46 is closer to the third
curved path ct3 than the outer edge 4612, the over-flow of the
sealant 46 in the display area AA will not occur. As a result, the
adverse effect on the display panel 1 resulting from the sealant is
avoided.
[0081] FIG. 9 shows an image of a display panel if observed with an
optical microscope, in accordance with some embodiments. The
display panel if includes a first substrate 10f and a sealant 40f A
curved segment 42f of the sealant 40f is located between a straight
segment 41f and a straight segment 43f.
[0082] A method for determining nodes along a curved path ct6 of
the sealant 40f is described below. But the method is not limited
thereto.
[0083] Firstly, create a connection line L1 by connecting any two
width centers 411f and 412f of the straight segment 41f.
Afterwards, create a connection line L2 by connecting any two width
centers 431f and 432f of the straight segment 43f. Afterwards, find
a point I1 at the intersection of the connection line L1 and the
connection line L2. Note that the width center of the straight
segment is positioned at a half of the width of the straight
segment.
[0084] Afterwards, find a sealant node 421f at the curved segment
42f. The sealant node 421f is a structure positioned immediately
adjacent to the straight segment 41f along the application
direction of the sealant 40 and has a width arranged in a
narrow-wide-narrow manner. Afterwards, create a connection line L3
passing through an outer convex point p7 and perpendicular to the
connection line L1, wherein the outer convex point p7 of the
sealant node 421f is a point at the outer edge of the sealant node
421f which is farthest from connection line L1. Afterwards, find a
node nf1 at the intersection of the connection line L3 and the
connection line L1. The node nf1 is one of the nodes along the
curved path ct6 and corresponds to the center of the sealant node
421f. Afterwards, make a circle with a center at the point I1 and
with a radius which is equal to the distance between the point I1
and the node nf1, and find another node nf5 at the intersection of
the circle and the connection line L2. The node nf5 is one of the
nodes along the curved path ct6 and corresponds to the center of
the sealant node 425f.
[0085] A method for determining the rotation center c6 of the
curved path ct6 on which the node nf1 and the node nf5 are located
is described below. But the method is not limited thereto. Firstly,
create a connection line L4 passing through the node nf1 and
perpendicular to the connection line L1. Afterwards, create a
connection line L5 passing through the node nf5 and perpendicular
to the connection line L2. Afterwards, find a rotation center c6 of
the curved path ct6 at the intersection of the connection line L4
and the connection line L5. The distance r.sub.6 between the
rotation center c6 and the node nf1 is equals to the distance
r.sub.6 between the rotation center c6 and the node nf5, and the
distance r.sub.6 is defined as the rotation radius of the curved
path ct6, as well as the rotation radius of the curved segment
42f
[0086] A method for determining the distance D.sub.6 between the
two neighboring nodes nf1 and nf2 is described below. But the
method is not limited thereto. Firstly, find a sealant node 422f at
the curved segment 42f. The sealant node 422f is a structure
positioned immediately adjacent to the sealant node 421f along the
application direction of the sealant 40 and has a width arranged in
a narrow-wide-narrow manner. Afterwards, create a connection line
L6 between an outer convex point p8 of the sealant node 422f and
the rotation center c6. The outer convex point p8 is located at the
intersection of the outer edge of the sealant node 422f and a
circle with a center at the rotation center c6. In other words, the
outer convex point p8 is a point of the outer edge of the sealant
node 422f which is tangential to the circle.
[0087] Afterwards, make a circle with a center at the rotation
center c6 and with a radius which is equal to the rotation radius
r.sub.6 so as to determine the curved path ct6. Afterwards, find a
node nf2 at the intersection of the connection line L6 and the
curved path ct6. The node nf2 is corresponding to the center of the
sealant node 422f. The distance D.sub.6 is equal to the linear
distance between the node nf1 and the node nf2. And the distance
D.sub.6 is equal to the linear distance between the sealant node
421f and the sealant node 422f However, the method for determining
the node nf2 should not be limited to the above-mentioned
embodiment. In some embodiments, the node nf2 is a geometrical
center of the sealant node 422f.
[0088] In the embodiment shown in FIG. 9, the distance d between
the edge of the substrate 10f and an edge of the display area AA is
equal to the shortest distance between an edge of the substrate 10f
and an edge of the display area AA. The edge of the substrate 10f
is bounded between an intersection of the connection line L4 and
the edge of the substrate 10f and another intersection of the
connection line L5 and the edge of the substrate 10f. But the
present disclosure is not limit thereto.
[0089] FIG. 10 shows an image of a display panel 1g observed with
an optical microscope, in accordance with some embodiments. The
display panel 1g includes a first substrate 10g and a sealant 40g.
A curved segment 42g of the sealant 40g is located between a
straight segment 41g and a straight segment 43g.
[0090] A method for determining nodes along the curved path ct7 of
the sealant 40g is described below. But the method is not limited
thereto.
[0091] Firstly, create a connection line L7 by connecting any two
width centers 411g and 412g of the straight segment 41g.
Afterwards, create a connection line L8 by connecting any two width
centers 431g and 432g of the straight segment 43g. Afterwards, find
a point 12 at the intersection of the connection line L7 and the
connection line L8. Note that the width center of the straight
segment is positioned at a half of the width of the straight
segment.
[0092] Afterwards, find a sealant node 421g at the curved segment
42g. The sealant node 421g is a structure positioned immediately
adjacent to the straight segment 41g along the application
direction of the sealant 40 and has a width arranged in a
narrow-wide-narrow manner. Afterwards, create a connection line L9
passing through an outer convex point p9 and perpendicular to the
connection line L7, wherein the outer convex point p9 of the
sealant node 421g is a point at the outer edge of the sealant node
421g which is farthest from connection line L7. Afterwards, find a
node ng1 at the intersection of the connection line L7 and the
connection line L9. The node ng1 is one of the nodes along the
curved path ct7 and corresponds to the center of the sealant node
421g. Afterwards, make a circle with a center at the point 12 and
with a radius which is equal to the distance between the point 12
and the node ng1, and find another node ng4 at the intersection of
the circle and the connection line L2. The node ng4 is one of the
nodes along the curved path ct7 and corresponds to the center of
the sealant node 424g.
[0093] A method for determining the rotation center c7 of the
curved path ct7 on which the node ng1 and the node ng4 are located
is described below. But the method is not limited thereto. Firstly,
create a connection line L10 passing through the node ng1 and
perpendicular to the connection line L7. Afterwards, create a
connection line L11 passing through the node ng4 and perpendicular
to the connection line L8. Afterwards, find a rotation center c7 of
the curved path ct7 at the intersection of the connection line L10
and the connection line L11. The distance r.sub.7 between the
rotation center c7 and the node ng1 is equal to the distance
r.sub.7 between the rotation center c7 and the node ng4, and the
distance r.sub.7 is defined as the rotation radius of the curved
path ct7, as well as the rotation radius of the curved segment
42g.
[0094] A method for determining the distance D.sub.7 between the
node ng1 and the node ng2 is described below. But the method is not
limited thereto. Firstly, find a sealant node 422g next to the
sealant node 421g. The sealant node 422g is a structure positioned
immediately adjacent to the sealant node 421g along the application
direction of the sealant 40 and has a width arranged in a
narrow-wide-narrow manner. Afterwards, create a connection line L12
between an outer convex point p10 of the sealant node 422g and the
rotation center c7. The outer convex point p10 is located at an
intersection of the outer edge of the sealant node 422g and a
circle with a center at the rotation center c7. In other words, the
outer convex point p10 is a point of the outer edge of the sealant
node 422f which is tangential to the circle.
[0095] Afterwards, make a circle with a center at the rotation
center c7 and with a radius which is equal to the rotation radius
r.sub.7 so as to determine the curved path ct7. Afterwards, find a
node ng2 at the intersection of the connection line L12 and the
curved path ct7. The node ng2 is corresponding to the center of the
sealant node 422g. The distance D.sub.7 is equal to the linear
distance between the node ng1 and the node ng2. And the distance
D.sub.7 is equal to the linear distance between the sealant node
421g and the sealant node 422g. However, a method for determining
the node center ng2 should not be limited to the above-mentioned
embodiment. In some embodiments, the node ng2 is a geometrical
center of the sealant node 422g.
[0096] In the embodiment shown in FIG. 10, the distance d between
the edge of the substrate 10g and an edge of the display area AA is
equal to the shortest distance between an edge of the substrate 10g
and an edge of the display area AA. The edge of the substrate 10g
is bounded between an intersection of the connection line L10 and
the edge of the substrate 10g and another intersection of the
connection line L11 and the edge of the substrate 10g. But the
present disclosure is not limit thereto.
[0097] FIG. 11 shows a schematic view of a display panel 1d, in
accordance with some embodiments. The display panel 1d includes a
first substrate 10d and a sealant 40d. In the embodiment, the first
substrate 10d has an elliptical shape, and the sealant 40d is
applied on the substrate 10d along the edge of the first substrate
10d.
[0098] In some embodiments, in the vicinity of two ends of the
minor axis of the first substrate 10d, the sealant 40d includes a
first curved segment 42d. The first curved segment 42d is applied
along the nodes nd1, nd2, and nd3 that are arranged on the first
curved path ct4. The two neighboring nodes nd1, nd2, and nd3 are
separated from one another by a distance D.sub.4, and the first
curved path ct4 has a rotation radius r.sub.4 and a rotation center
c4.
[0099] In the vicinity of two ends of the major axis of the first
substrate 10d, the sealant 40d includes a second curved segment
44d. The second curved segment 44d is applied along the nodes ne1,
ne2, and ne3 arranged on the second curved path ct5. The two
neighboring node center ne1, ne2, and ne3 is separated from one the
other by a distance D.sub.5, and the second curved path ct5 has a
rotation radius r.sub.5 and a rotation center c5.
[0100] In some embodiments, under a condition that the
manufacturing variance for applying the first curved segment 42d is
the same as that for applying the second curved segment 44d. The
rotation radius r.sub.5 is smaller than the rotation radius
r.sub.4. Therefore, according to the following equation:
d.varies. {square root over (r)}
[0101] The distance D.sub.5 would be smaller than the distance
D.sub.4. Namely, the rotation radius r.sub.4 and the rotation
radius r.sub.5 may satisfy the relation of
0<r.sub.5/r.sub.4<1, and the distance D.sub.4 and the
distance D.sub.5 may satisfy the relation of
0<D.sub.5/D.sub.4<1.
[0102] Though the sealant nodes of the sealant 40d are not shown,
the distance between two neighboring nodes is equal to the distance
between the two neighboring sealant nodes. Similarly, the rotation
radius of the curved path is equal to the rotation radius of the
curved segment.
[0103] FIG. 12 shows an image of a display panel 1h observed with
an optical microscope, in accordance with some embodiments. The
display panel 1h includes a first substrate 10h and a sealant 40h.
The sealant 40h is applied along a curved path ct8 to form a curved
segment 42h.
[0104] A method for determining the rotation center c8 of the
curved path ct8 on which the nodes nh1 and nh2 are located is
described below. But the method is not limited thereto. Firstly,
randomly select two points v1 and v2 at an inner edge of the
sealant node 421h and create a central vertical line L13.
Afterwards, randomly select two points v3 and v4 at the inner edge
of the sealant node 421h and create a central vertical line L14.
Find a point 13 at an intersection of the central vertical lines
L13 and L14. Afterwards, make a circle with a center at the point
13 and make the circle approach the inner edge of the sealant node
421h. The circumference of the circle and the inner edge of the
sealant node 421h meet at two farthest points v5 and v6. A radius
central vertical line L15 is obtained by connecting the two points
v5 and v6. Afterwards, obtain another radius central vertical line
L16 on another sealant node 422h using the same method. An
intersection of the two radius central vertical lines L15 and L16
is the rotation center c8. The distance r.sub.8 between the
rotation center c8 and the curved path ct8 is defined as the
rotation radius of the curved path ct8, as well as the rotation
radius of the curved segment 42h.
[0105] A method for determining the distance D.sub.8 between the
node nh1 and the node nh2 is described below. Firstly, find a
sealant node 422h next to the sealant node 421h. The node nh1 is
located on the radius central vertical line L15 and located at a
half of the width of the sealant node 421h. The node nh1 is located
on the radius central vertical line L16 and located at a half of
the width of the sealant node 422h. The distance D.sub.8 is equal
to the linear distance between the node nh1 and the node nh2. And
the distance D.sub.8 is equal to the linear distance between the
sealant node 421h and the sealant node 422h. However, the method
for determining the node nh1 and the node nh2 should not be limited
to the above-mentioned embodiment. In some embodiments, the node
nh1 is a geometrical center of the sealant node 421h, and the node
nh2 is a geometrical center of the sealant node 422h.
[0106] Embodiments for applying a sealant on a substrate are
disclosed. By controlling the parameter (the number of nodes, and
distance between nodes) for applying the sealant, the manufacturing
time for applying the sealant is adjustable. Therefore, the display
panel is produced sufficiently, and the throughput of the display
panel is improved. In addition, since the manufacturing variance
for applying the sealant is controlled within a particular range,
the problem of the sealant being applied over the display area of
the display panel is prevented.
[0107] Although the embodiments and their advantages have been
described in detail, it should be understood that various changes,
substitutions, and alterations can be made herein without departing
from the spirit and scope of the embodiments as defined by the
appended claims. Moreover, the scope of the present application is
not intended to be limited to the particular embodiments of the
process, machine, manufacture, composition of matter, means,
methods, and steps described in the specification. As one of
ordinary skill in the art will readily appreciate from the
disclosure, processes, machines, manufacture, compositions of
matter, means, methods, or steps, presently existing or later to be
developed, that perform substantially the same function or achieve
substantially the same result as the corresponding embodiments
described herein may be utilized according to the disclosure.
Accordingly, the appended claims are intended to include within
their scope such processes, machines, manufacture, compositions of
matter, means, methods, or steps. In addition, each claim
constitutes a separate embodiment, and the combination of various
claims and embodiments are within the scope of the disclosure.
* * * * *