U.S. patent application number 14/744408 was filed with the patent office on 2016-09-22 for display panel and display device.
The applicant listed for this patent is BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.. Invention is credited to Zhifu DONG, Hongmin LI, Ping SONG, Wei XUE.
Application Number | 20160274407 14/744408 |
Document ID | / |
Family ID | 53313923 |
Filed Date | 2016-09-22 |
United States Patent
Application |
20160274407 |
Kind Code |
A1 |
DONG; Zhifu ; et
al. |
September 22, 2016 |
DISPLAY PANEL AND DISPLAY DEVICE
Abstract
The present invention provides a display panel and a display
device. The display panel comprises an array substrate and a color
filter substrate assembled in an aligned manner, the array
substrate comprises a display area and a lead wire area provided on
the periphery of at least one side of the display area, a first
boundary line of the color filter substrate close to one side of
the lead wire area has an orthographic projection on the array
substrate and the orthographic projection falls into a boundary
area of the lead wire area adjacent to the display area, a
protective layer is provided on one side of the boundary area
facing the color filter substrate, and the protective layer covers
parts of the boundary area corresponding to the orthographic
projection of the first boundary line on the array substrate and
lead wires surrounding the parts.
Inventors: |
DONG; Zhifu; (Beijing,
CN) ; XUE; Wei; (Beijing, CN) ; SONG;
Ping; (Beijing, CN) ; LI; Hongmin; (Beijing,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
BOE TECHNOLOGY GROUP CO., LTD.
HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD. |
Beijing
Anhui |
|
CN
CN |
|
|
Family ID: |
53313923 |
Appl. No.: |
14/744408 |
Filed: |
June 19, 2015 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L 27/124 20130101;
G02F 1/13452 20130101; G02F 2201/50 20130101; G02F 1/133345
20130101; G02F 1/133514 20130101; G02F 2001/133388 20130101 |
International
Class: |
G02F 1/1333 20060101
G02F001/1333; G02F 1/1343 20060101 G02F001/1343; G02F 1/1362
20060101 G02F001/1362; H01L 27/12 20060101 H01L027/12; G02F 1/1335
20060101 G02F001/1335 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 19, 2015 |
CN |
201510124496.8 |
Claims
1. A display panel, comprising an array substrate and a color
filter substrate which are assembled in an aligned manner, wherein
the array substrate comprises a display area and a lead wire area
provided on the periphery of at least one side of the display area,
a first boundary line of the color filter substrate close to one
side of the lead wire area has an orthographic projection on the
array substrate and the orthographic projection falls into a
boundary area of the lead wire area adjacent to the display area,
and a protective layer is provided on one side of the boundary area
facing the color filter substrate, and the protective layer covers
parts of the boundary area corresponding to the orthographic
projection of the first boundary line on the array substrate and
lead wires surrounding the parts of the boundary area.
2. The display panel of claim 1, wherein a center line of the
protective layer in width direction corresponds to the first
boundary line, and the protective layer has the same length as the
first boundary line.
3. The display panel of claim 2, wherein a width of the protective
layer ranges from 100 .mu.m to 400 .mu.m.
4. The display panel of claim 1, wherein the protective layer is
made of organic insulating material or inorganic insulating
material.
5. The display panel of claim 1, wherein the lead wires also extend
to a center area of the lead wire area far away from the display
area, and the protective layer does not cover the lead wires in the
center area.
6. The display panel of claim 1, wherein the array substrate
comprises a substrate as well as gate lines, a gate insulating
layer, data lines, a passivation layer and common electrodes
sequentially arranged on the substrate, and the array substrate
further comprises a barrier layer arranged between the passivation
layer and the data lines; the gate insulating layer and the
passivation layer also extend to the lead wire area, and the
protective layer and the barrier layer are made of the same
material and arranged in the same layer level.
7. The display panel of claim 6, wherein the sum of thicknesses of
the protective layer and the passivation layer ranges from 7,000
.ANG. to 20,000 .ANG..
8. The display panel of claim 6, wherein the lead wires comprise
the data lines and the gate lines extending to the lead wire
area.
9. A display device, comprising a display panel which comprises an
array substrate and a color filter substrate assembled in an
aligned manner, wherein the array substrate comprises a display
area and a lead wire area provided on the periphery of at least one
side of the display area, a first boundary line of the color filter
substrate close to one side of the lead wire area has an
orthographic projection on the array substrate and the orthographic
projection falls into a boundary area of the lead wire area
adjacent to the display area, and a protective layer is provided on
one side of the boundary area facing the color filter substrate,
and the protective layer covers parts of the boundary area
corresponding to the orthographic projection of the first boundary
line on the array substrate and lead wires surrounding the parts of
the boundary area.
10. The display device of claim 9, wherein a center line of the
protective layer in width direction corresponds to the first
boundary line, and the protective layer has the same length as the
first boundary line.
11. The display device of claim 10, wherein a width of the
protective layer ranges from 100 .mu.m to 400 .mu.m.
12. The display device of claim 9, wherein the protective layer is
made of organic insulating material or inorganic insulating
material.
13. The display device of claim 9, wherein the lead wires also
extend to a center area of the lead wire area far away from the
display area, and the protective layer does not cover the lead
wires in the center area.
14. The display device of claim 9, wherein the array substrate
comprises a substrate as well as gate lines, a gate insulating
layer, data lines, a passivation layer and common electrodes
sequentially arranged on the substrate, and the array substrate
further comprises a barrier layer arranged between the passivation
layer and the data lines; the gate insulating layer and the
passivation layer also extend to the lead wire area, and the
protective layer and the barrier layer are made of the same
material and arranged in the same layer level.
15. The display device of claim 14, wherein the sum of thicknesses
of the protective layer and the passivation layer ranges from 7,000
.ANG. to 20,000 .ANG..
16. The display device of claim 14, wherein the lead wires comprise
the data lines and the gate lines extending to the lead wire area.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to the field of display
technology, and particularly relates to a display panel and a
display device.
BACKGROUND OF THE INVENTION
[0002] With the development of display technology, the liquid
crystal display technology has been widely used and plays a vital
role in industrial production and people's life.
[0003] As shown in FIG. 1, a liquid crystal display panel is
generally formed by assembling an array substrate 1 and a color
filter substrate 2 in an aligned manner. A lead wire area 12 is
provided in the array substrate 1, and the lead wire area 12 needs
to be exposed to connect with the input end of a peripheral
circuit. Thus, a part of the color filter substrate 2 corresponding
to the lead wire area 12 needs to be cut off, so that the lead wire
area 12 in the array substrate 1 is exposed.
[0004] The cutting of the color filter substrate 2 is generally
performed after the array substrate 1 and the color filter
substrate 2 are aligned and assembled, and along the boundary of
the lead wire area 12 and a non-lead wire area in the array
substrate 1. When the color filter substrate 2 is cut by adopting
cutting equipment, glass chippings are produced along a cutting
line 3, meanwhile, the glass chippings are left in a region of the
lead wire area 12 corresponding to the cutting line 3, so that lead
wires 14 arranged in the region of the lead wire area 12
corresponding to the cutting line 3 are easily scratched. Serious
scratch may even lead to poor contact of the lead wires 14 and
finally lead to faults of the liquid crystal display panel.
SUMMARY OF THE INVENTION
[0005] Aiming at the above technical problems in the prior art, the
present invention provides a display panel and a display device.
The display panel is provided with a protective layer, so that
glass chippings produced when a color filter substrate is cut along
a first boundary line would not scratch parts of a boundary area in
a lead wire area in an array substrate corresponding to the first
boundary line of the color filter substrate and lead wires
surrounding the parts, thus avoiding poor contact of the lead wires
in the lead wire area, and further avoiding faults of the display
panel and improving the yield of the display panel.
[0006] An embodiment of the present invention provides a display
panel, including an array substrate and a color filter substrate
which are assembled in an aligned manner, wherein the array
substrate includes a display area and a lead wire area positioned
on the periphery of at least one side of the display area, a first
boundary line of the color filter substrate close to one side of
the lead wire area has an orthographic projection on the array
substrate and the orthographic projection falls into a boundary
area of the lead wire area adjacent to the display area, a
protective layer is provided on one side of the boundary area
facing the color filter substrate, and the protective layer covers
parts of the boundary area corresponding to the orthographic
projection of the first boundary line on the array substrate and
lead wires surrounding the parts.
[0007] A center line of the protective layer in width direction may
correspond to the first boundary line, and the protective layer may
have the same length as the first boundary line.
[0008] A width of the protective layer may range from 100 .mu.m to
400 .mu.m.
[0009] The protective layer may be made of organic insulating
material or inorganic insulating material.
[0010] The lead wires may also extend to a center area of the lead
wire area far away from the display area, and the protective layer
does not cover the lead wires in the center area.
[0011] The array substrate may include a substrate as well as gate
lines, a gate insulating layer, data lines, a passivation layer and
common electrodes sequentially arranged on the substrate, and may
further include a barrier layer arranged between the passivation
layer and the data lines. The gate insulating layer and the
passivation layer may also extend to the lead wire area, and the
protective layer and the barrier layer may be made of the same
material and arranged in the same layer level.
[0012] The sum of thicknesses of the protective layer and the
passivation layer may range from 7,000 .ANG. to 20,000 .ANG..
[0013] The lead wires may include the data lines and the gate lines
extending to the lead wire area.
[0014] An embodiment of the present invention further provides a
display device, including the above display panel.
[0015] The display panel provided by the embodiment of the present
invention is provided with the protective layer covering the parts
of the boundary area in the lead wire area in the array substrate
corresponding to the first boundary line of the color filter
substrate and the surrounding lead wires thereof. When the color
filter substrate is cut along the first boundary line of the color
filter substrate by adopting cutting equipment, glass chippings
produced along the cutting line are left on the protective layer;
and because of blocking protection of the protective layer, the
glass chippings do not scratch the corresponding parts of the
boundary area in the lead wire area and the surrounding lead wires
thereof, thus avoiding poor contact of the lead wires in the lead
wire area, then further avoiding faults of the display panel and
improving the yield of the display panel.
[0016] The display device provided by the embodiment of the present
invention adopts the above display panel, so that the yield of the
display device is improved.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. 1 is a structural top view of a display panel in the
prior art;
[0018] FIG. 2 is a structural top view of a display panel in an
embodiment of the present invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] To make those skilled in the art better understand the
technical solutions of the present invention, a display panel and a
display device provided by the present invention will be further
described in detail below in combination with the accompanying
drawings and specific embodiments.
[0020] As shown in FIG. 2, the embodiment of the present invention
provides a display panel, including an array substrate 1 and a
color filter substrate 2 which are assembled in an aligned manner.
The array substrate 1 includes a display area 11 and a lead wire
area 12 positioned on the periphery of at least one side of the
display area 11. A first boundary line 21 of the color filter
substrate 2 close to one side of the lead wire area 12 has an
orthographic projection on the array substrate 1 and the
orthographic projection falls into a boundary area 121 of the lead
wire area 12 adjacent to the display area 11. A protective layer 13
is provided on one side, facing the color filter substrate 2, of
the boundary area 121, and the protective layer 13 covers parts of
the boundary area 121 corresponding to the orthographic projection
of the first boundary line 21 (hereafter referred to as
corresponding boundary parts) and lead wires 14 surrounding the
corresponding boundary parts.
[0021] By providing the protective layer 13 which covers the
corresponding boundary parts in the boundary area 121 and the
surrounding lead wires 14, when the color filter substrate 2 is cut
along the first boundary line 21 of the color filter substrate 2 by
adopting cutting equipment, glass chippings produced along the
cutting line are left on the protective layer 13. Because of
blocking protection of the protective layer 13, the glass chippings
do not scratch the corresponding boundary parts in the boundary
area 121 of the lead wire area 12 and the surrounding lead wires 14
thereof, thus avoiding poor contact of the lead wires 14 in the
lead wire area 12, then further avoiding faults of the display
panel and improving the yield of the display panel.
[0022] In this embodiment, a center line of the protective layer 13
in width direction corresponds to the first boundary line 21, and
the protective layer 13 has the same length as the first boundary
line 21. The first boundary line 21 is positioned above the width
center line of the protective layer 13. When the first boundary
line 21 is cut, glass chippings are produced on both sides of the
first boundary line 21 and are substantially identical in quantity
on the both sides. Meanwhile, the glass chippings are concentrated
on the both sides of the first boundary line 21 after the cutting,
as such, the protective layer 13 is configured to cover and protect
the corresponding boundary parts and the lead wire area 12 on both
sides thereof, thus preventing the glass chippings produced when
the first boundary line 21 is cut from scratching the corresponding
boundary parts and the lead wires 14 on both sides thereof in the
lead wire area 12.
[0023] In this embodiment, a width of the protective layer 13
ranges from 100 .mu.m to 400 .mu.m. The protective layer 13 is wide
enough to block the glass chippings produced when the first
boundary line 21 is cut, so that the glass chippings do not scratch
the corresponding boundary parts and the lead wires 14 on both
sides thereof in the lead wire area 12. Meanwhile, the protective
layer 13 with such a width does not produce any influence on the
connection between the lead wire area 12 and a peripheral circuit,
namely the protective layer 13 in the width range can ensure well
connection between the lead wire area 12 and the peripheral
circuit.
[0024] It should be noted that, the width range of the protective
layer 13 is actually determined by the cutting precision of the
cutting equipment. If the cutting precision of the cutting
equipment is high, the width of the protective layer 13 may be
small. If the cutting precision of the cutting equipment is low,
the width of the protective layer 13 must be large. The width of
the protective layer 13 should not only ensure that the glass
chippings produced during cutting do not scratch the corresponding
boundary parts and the lead wires 14 on both sides thereof in the
lead wire area 12, but also ensure the well connection between the
lead wire area 12 and the peripheral circuit.
[0025] In this embodiment, the protective layer 13 is made of
organic insulating material or inorganic insulating material. The
protective layer 13 may also be made of other insulating material,
as long as the protective layer 13 can achieve a certain blocking
effect on the glass chippings.
[0026] In this embodiment, the lead wires 14 also extend to a
center area 122 of the lead wire area 12 far away from the display
area 11, and the protective layer 13 does not cover the lead wires
14 in the center area 122, thus ensuring well connection between
the lead wires 14 in the center area 122 of the lead wire area 12
and the peripheral circuit. If the protective layer 13 extends to
the center area 122 of the lead wire area 12, the protective layer
13 with a certain thickness may influence well connection between
the lead wires 14 in the center area 122 of the lead wire area 12
and the peripheral circuit.
[0027] In this embodiment, the array substrate 1 includes a
substrate as well as gate lines, a gate insulating layer, data
lines, a passivation layer and common electrodes which are
sequentially arranged on the substrate, and further includes a
barrier layer arranged between the passivation layer and the data
lines. The gate insulating layer and the passivation layer also
extend to the lead wire area 12, and the protective layer 13 and
the barrier layer are made of the same material and arranged in the
same layer level. The barrier layer may reduce the parasitic
capacitance between the data lines and the common electrodes, which
is favorable for normal display of the display panel. The
protective layer 13 and the barrier layer are manufactured in the
same patterning process, so that the manufacturing of the
protective layer 13 would not increase the patterning process steps
in the manufacturing of the array substrate.
[0028] In this embodiment, the lead wires 14 include data lines and
gate lines extending to the lead wire area 12. When the lead wires
14 are data lines, a passivation layer and a protective layer 13
which serve as two insulating layers are provided above the
corresponding boundary parts of the lead wire area 12 and the data
lines on both sides thereof, and compared with the situation that
only a passivation layer is provided above the corresponding
boundary parts of the lead wire area 12 and the data lines on both
sides thereof, the protective layer 13 enhances the protection on
the corresponding boundary parts of the lead wire area 12 and the
data lines on both sides thereof, so that glass chippings produced
when the first boundary line 21 is formed by cutting are unlikely
to scratch the corresponding boundary parts of the lead wire area
12 and the data lines on both sides thereof. Similarly, when the
lead wires 14 are gate lines, a gate insulating layer, a protective
layer 13 and a passivation layer which serve as three insulating
layers are provided above the corresponding boundary parts of the
lead wire area 12 and the gate lines on both sides thereof, and
compared with the situation that only a gate insulating layer and a
passivation layer are provided above the corresponding boundary
parts of the lead wire area 12 and the gate lines on both sides
thereof, the protective layer 13 enhances the protection on the
corresponding boundary parts of the lead wire area 12 and the gate
lines on both sides thereof, so that glass chippings produced when
the first boundary line 21 is formed by cutting are unlikely to
scratch the corresponding boundary parts of the lead wire area 12
and the gate lines on both sides thereof. Therefore, the
corresponding boundary parts of the lead wire area 12 as well as
the data lines and the gate lines on both sides of the
corresponding boundary parts may not be scratched, and then the
yield of the display panel is ensured.
[0029] In this embodiment, the sum of thicknesses of the protective
layer 13 and the passivation layer is 7,000 .ANG. to 20,000 .ANG..
According to experimental data, when the thickness of the
insulating layers provided on the lead wire area 12 and covering
the corresponding boundary parts and the lead wires 14 on both
sides thereof is more than or equal to 7,000 .ANG., the lead wires
14 in this area would not be scratched by the glass chippings
produced when the color filter substrate is cut. Therefore, the sum
of thicknesses of the protective layer 13 and the passivation layer
is sufficient to protect the lead wires 14 (such as data lines and
gate lines) from being scratched, thus ensuring the yield of the
display panel.
[0030] The display panel provided by this embodiment is provided
with the protective layer covering the parts (that is, the
corresponding boundary parts) of the boundary area in the lead wire
area of the array substrate corresponding to the first boundary
line of the color filter substrate and the surrounding lead wires
thereof. When the color filter substrate is cut along the first
boundary line of the color filter substrate by adopting cutting
equipment, the glass chippings produced along the cutting line are
left on the protective layer, and because of blocking protection of
the protective layer, the glass chippings do not scratch the
corresponding boundary parts arranged in the boundary area of the
lead wire area and the surrounding lead wires thereof, thus
avoiding poor contact of the lead wires in the lead wire area, then
further avoiding faults of the display panel and improving the
yield of the display panel.
[0031] The embodiments of the present invention further provide a
display device, including the aforementioned display panel.
[0032] The yield of the display device is improved by adopting the
aforementioned display panel.
[0033] It could be understood that, the above embodiments are
merely exemplary embodiments adopted for describing the principle
of the present invention, rather than limiting the present
invention. Various modifications and improvements may be made for
those of ordinary skill in the art without departing from the
spirit and essence of the present invention, and these
modifications and improvements are regarded as within the
protection scope of the present invention.
* * * * *