U.S. patent application number 13/781752 was filed with the patent office on 2017-11-16 for touch device and method for fabricating thereof.
The applicant listed for this patent is TPK GLASS SOLUTIONS (XIAMEN) INC.. Invention is credited to CHIEN-TAI CHIU, Qingwen Hu, Weijie Huang, Yu-Xun Su.
Application Number | 20170329432 13/781752 |
Document ID | / |
Family ID | 46702189 |
Filed Date | 2017-11-16 |
United States Patent
Application |
20170329432 |
Kind Code |
A9 |
CHIU; CHIEN-TAI ; et
al. |
November 16, 2017 |
TOUCH DEVICE AND METHOD FOR FABRICATING THEREOF
Abstract
The present disclosure relates to touch technology, and more
particularly to a touch device and a method of fabricating the
same. The disclosure provides a touch device comprising a
protective cover having a sensing area and a peripheral area
surrounding the sensing area; a first decoration layer disposed on
the peripheral area; a sensing electrode layer comprising a sensing
portion disposed on the sensing area and an extension portion
extending from the sensing area to the first decoration layer; a
second decoration layer disposed on the first decoration layer; a
signal line formed on the second decoration layer and connected to
the extension portion of the sensing electrode layer. By the design
of the foregoing first and second decoration layers, the broken
state or interruption of the sensing electrode layer can be
prevented. In addition, the disclosure also provides the
fabricating method for the foregoing touch device.
Inventors: |
CHIU; CHIEN-TAI; (Yongkang,
TW) ; Su; Yu-Xun; (Yongkang, TW) ; Huang;
Weijie; (Xiamen, CN) ; Hu; Qingwen; (Xiaman,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
TPK GLASS SOLUTIONS (XIAMEN) INC. |
Xiamen |
|
CN |
|
|
Prior
Publication: |
|
Document Identifier |
Publication Date |
|
US 20140247226 A1 |
September 4, 2014 |
|
|
Family ID: |
46702189 |
Appl. No.: |
13/781752 |
Filed: |
March 1, 2013 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G06F 2203/04103
20130101; G06F 2203/04107 20130101; G06F 1/181 20130101; G06F 3/041
20130101; G06F 3/044 20130101 |
International
Class: |
G06F 3/044 20060101
G06F003/044; G06F 3/041 20060101 G06F003/041; G06F 1/18 20060101
G06F001/18 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 1, 2012 |
CN |
201220075364.2 |
Claims
1. A touch device, comprising: a protective cover having a sensing
area and a peripheral area surrounding the sensing area; a first
decoration layer disposed on the peripheral area; a sensing
electrode layer comprising a sensing portion disposed on the
sensing area and an extension portion extending from the sensing
area to the first decoration layer; a second decoration layer
disposed on the first decoration layer; and a signal line formed on
the second decoration layer and connected to the extension
portion.
2. The touch device of claim 1, wherein the second decoration layer
has more thickness than the thickness of the first decoration
layer.
3. The touch device of claim 1, wherein the thickness of the first
decoration layer is 2-6 .mu.m.
4. The touch device of claim 1, wherein the first decoration layer
and the second decoration layer are made of non-black inks.
5. The touch device of claim 1, wherein the first decoration layer
is of the same color as of the second decoration layer.
6. The touch device of claim 1, wherein the signal line comprises a
first portion located on the upper surface of the second decoration
layer, and a second portion extending from the first portion to be
connected to the extension portion of the sensing electrode
layer.
7. The touch device of claim 6, wherein the touch device further
comprises a third decoration layer disposed between the first
portion of the signal line and the second decoration layer.
8. The touch device of claim 1, wherein the touch device further
comprises a protective layer covering the second decoration layer
and the signal line.
9. The touch device of claim 1, wherein the sensing portion of the
sensing electrode layer has a plurality of row-arranged first
sensing electrodes and a plurality of column-arranged second
sensing electrodes; wherein each of the two adjacent first sensing
electrodes are connected through a connecting line, whereas the
second sensing electrodes are separated from each other.
10. The touch device of claim 9, wherein the touch device further
comprises: a jumper line electrically connecting each of the two
adjacent second sensing electrodes; and an insulating layer
disposed between the connecting line and the jumper line to
insulate the first sensing electrodes and the second sensing,
electrodes.
11. A method of fabricating a touch device, comprising: forming a
first decoration layer on a peripheral area of a protective cover,
wherein the peripheral area surrounds a sensing area of the
protective cover; forming a sensing electrode layer on the
protective cover, wherein the sensing electrode layer comprises a
sensing portion disposed on the sensing area and an extension
portion extending from the sensing area to the first decoration
layer; forming a second decoration layer on the first decoration
layer; and forming a signal line on the second decoration layer,
wherein the signal line is connected to the extension portion.
12. The method of fabricating a touch device of claim 11, wherein
the signal line comprises a first portion located on the upper
surface of the second decoration layer, and a second portion
extending from the first portion to be connected with the extension
portion of the sensing electrode layer.
13. The method of fabricating a touch device of claim 11, wherein
the method further comprises forming a third decoration layer on
the second decoration layer before forming the signal line.
14. The method of fabricating a touch device of claim 11, wherein
the method further comprises forming a protective layer to cover
the second decoration layer and the signal line after the forming
the signal line.
15. The method of fabricating a touch device of claim 11, wherein
the method for forming the first decoration layer and the second
decoration layer includes photoetching or printing.
16. The method of fabricating a touch device of claim 11, wherein
the method for forming the sensing electrode layer includes
photoetching or printing.
17. The method of fabricating a touch device of claim 11, wherein
the sensing portion of the sensing, electrode layer includes a
plurality of row-arranged first sensing electrodes and a plurality
of column-arranged second sensing electrodes, wherein each of the
two adjacent first sensing electrodes are connected through a
connecting line, whereas the second sensing electrodes are
separated from each other.
18. The method of fabricating a touch device of claim 17, wherein
the method further comprises: forming an insulating layer on the
connecting line to insulate the first sensing electrode and second
sensing electrode; and forming a jumper line on the insulating
layer to connect each two adjacent second sensing electrode.
19. The method of fabricating a touch device of claim 18, wherein
the jumper line and the signal line are formed simultaneously.
Description
BACKGROUND OF THE INVENTION
[0001] This Application claims the benefit of the People's Republic
of China Application No. 201220075364.2, filed on Mar. 1, 2012.
FIELD OF THE INVENTION
[0002] The present disclosure relates to touch technology, and more
particularly to a touch device and a fabricating method
thereof.
DESCRIPTION OF THE RELATED ART
[0003] Touch panels have been widely used in the fields of
household articles, communication devices and electronic devices.
Presently, a touch panel combines with a display panel for forming
a touch display panel permits direct selection of the images
displayed on the panel with fingers or a stylus. Thereby, making it
possible for the users to use the device conveniently. Such a touch
panel reduces the volume of the device and replaces solid keyboard
gradually as the input interface for various kinds of electronic
products.
[0004] Generally, the sensing electrode layer of a touch panel is
disposed on the sensing area of the touch panel, and the periphery
of the sensing area is set with a decoration layer on which various
circuits, for example, the signal lines for transmitting the
signals of the sensing electrode layer, are disposed. The sensing
electrode layer is usually a transparent electrode layer that
enables users to observe the images on the display panel. The
signal lines are generally non-transparent metallic wires, such as
silver, copper etc., that have good signal transmission ability and
low costs. In actual production process, the formation of a
decoration layer on the substrate of a touch panel is usually
previous to that of a sensing electrode layer, thus making the
sensing electrode layer afterward having a portion of climbing
slope extending toward the decoration layer. Subsequently, signal
lines are then formed on the decoration layer and connected
electrically to the sensing electrode layer for transmitting the
signals of the sensing electrode layer to a processor.
[0005] The decoration layer acts like masking signal lines so as
not to allow the user to sense the presence of signal lines. In
addition, more thickness of the decoration layer is not advisable,
as it becomes impossible for the sensing, electrode layer to climb
smoothly up to the decoration layer to connect to the signal lines.
Generally, the decoration layer have a thickness about 2-4 .mu.m
and are made of black materials with an optical density larger than
3. However, when the decoration layer of white or other colors is
used in various designs, the thickness at least above 40 .mu.m is
necessary, so that the effect of masking signal lines can be
attained. However, it becomes impossible for the sensing electrode
layer to climb smoothly up to the decoration layer due to the
overlarge angle of the interface generated by the decoration layer
of such a thickness, causing the sensing electrode layer to break
easily and thereby, resulting in an open circuit.
SUMMARY OF THE INVENTION
[0006] A touch device and a method of fabricating the same are
provided by the present disclosure. On the peripheral area of the
touch device, a decoration component is formed with non-black ink
and is divided into two layers respectively having different areas
and thicknesses, such that, it becomes unnecessary for the sensing
electrode layer to climb onto the non-black thick decoration layer
for connecting to the signal lines, thereby, reducing or preventing
the broken state or interruption of the sensing electrode layer on
its junction with the decoration layer, and further, settling the
disconnection of the sensing electrode layer of a touch device.
[0007] According to one embodiment, a touch device, comprises: a
protective cover having a sensing area and a peripheral area
surrounding the sensing, area; a first decoration layer disposed on
the peripheral area surrounding the sensing area; a sensing
electrode layer containing a sensing portion disposed on the
sensing area and an extension portion extending from the sensing
area to the first decoration layer; a second decoration layer
disposed on the first decoration layer; and a signal line formed on
the second decoration layer and connected to the extension
portion.
[0008] According to another embodiment of the disclosure, method of
fabricating the touch device is provided. The method involves:
forming a first decoration layer on a peripheral area of a
protective cover, wherein the peripheral area surrounds a sensing
area of the protective cover; forming a sensing electrode layer on
the protective cover, wherein the sensing electrode layer comprises
a sensing portion disposed on the sensing area and an extension
portion extending from the sensing area to the first decoration
layer; forming a second decoration layer on the first decoration
layer; and forming a signal line on the second decoration layer,
wherein the signal line is connected to the extension portion.
[0009] By the design of the first and second decoration layers, the
broken state or interruption of the sensing electrode layer on its
junction with the decoration layer can be prevented, and the
disconnection of the sensing electrode layer of a touch device can
further be settled.
[0010] In order to make the foregoing and other purposes,
characteristics and advantages of the disclosure more
conspicuously, the following content particularly lists preferable
embodiments coupled with attached drawings to make a detailed
description as follows:
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] For those skilled in the art, numerous embodiments and
drawings described below are for illustration purpose only, and not
to limit the scope of the present disclosure in any manner.
[0012] FIG. 1 is a top view of the touch device drawn in accordance
with an embodiment the disclosure.
[0013] FIG. 2 is a cross-sectional schematic diagram of the touch
device drawn along the cross-sectional line Y-Y' in FIG 1.
[0014] FIGS. 3A-3E are cross-sectional schematic diagrams of the
intermediate stage in the fabrication of a touch device in
accordance with an embodiment of the disclosure.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] To provide a better understanding of the present disclosure
to users skilled in the art, preferred embodiments are detailed as
follows. The preferred embodiments of the present disclosure are
illustrated in the accompanying drawings with numbered elements to
clarify the contents and effects to be achieved.
[0016] FIG. 1 is a top view of the touch device in accordance with
an embodiment of the disclosure. FIG. 2 is a cross-sectional
schematic diagram of the touch device drawn along the
cross-sectional line Y-Y' in FIG. 1. The touch device 100 may be a
capacitive touch device but not limited thereto. The touch device
100 comprises a protective cover 102, a sensing electrode layer
104, a first decoration layer 108, a second decoration layer 112
and a signal line 116.
[0017] The protective cover 102 has a sensing area 100A and a
peripheral area 100B surrounding the sensing area 100A, and
provides protecting and supporting functions for the upper
components (such as the sensing electrode layer 104, the first
decoration layer 108, the second decoration layer 112 and the
signal line 116 etc). The protective cover 102 can be a transparent
substrate made of glass or plastic. The protective cover 102 has a
first surface 102A and a second surface 102B, wherein the first
surface 102A serves as a touch surface for the touch device 100,
and the second surface 102B serves as a supporting surface for the
sensing electrode layer 104, the first decoration layer 108 and the
second decoration layer 112.
[0018] The sensing electrode layer 104 may include a sensing
portion 104A and an extension portion 104B. The sensing portion
104A of the sensing electrode layer 104 is set in the sensing area
100A of the protective cover 102. The sensing portion 104A of the
sensing electrode layer 104 may comprise a plurality of
row-arranged first sensing electrodes 104AX and a plurality of
column-arranged second sensing electrodes 104AY Each of the two
adjacent row-arranged first sensing electrodes 104AX are connected
through the connecting lines 120, whereas the column-arranged
second sensing electrodes 104AY are separated from each other. Each
of the two adjacent column-arranged second sensing electrodes 104AY
in a same column are electrically connected by a jumper line 124.
An insulating layer 126 is set between each connecting line 120 and
each jumper line 124, making the first sensing electrodes 104AX and
the second sensing electrodes 104AY electrically insulated.
Preferably, the sensing electrode layer 104 is arranged in a
single-layer and double-axes form. However the pattern of the
sensing electrode layer is not limited to this, and may include a
single-layer and single-axis form or a double-layer and double-axes
form. All these belong to the protection range of the disclosure as
long as any changes or modifications are made in the spirit and
scope of the disclosure. The sensing electrode layer can he made of
any transparent electrode material such as indium tin oxide, indium
zinc oxide, indium gallium oxide, indium gallium zinc oxide,
nano-silver filament, nano-carbon tube, and graphene etc.
[0019] When the operator uses his finger or a stylus to touch the
sensing area 100A of the first surface 102A of the protective cover
102, an inductive capacitance is generated between the finger (or
the stylus) and the sensing portion 104A of the sensing electrode
layer 104. The inductive capacitance is converted into an electric
signal and the electric signal then is transmitted to an external
circuit for calculating touch positions on the touch device
100.
[0020] The first decoration layer 108 may be set on the second
surface 102B of the protective substrate 102 and in the peripheral
area 100B. The first decoration layer 108 may be made of non-black
ink such as one with an optical density less than 3. In an
embodiment, the sensing electrode layer 104 includes an extension
portion 104B extending from the sensing area 100A to the first
decoration layer 108, that is, the first sensing electrodes 104AX
and the second sensing electrodes 104AY can further extend to the
first decoration layer 108 for forming the extension portion 104B
of the sensing electrode layer 104. The sensing portion 104A of the
sensing electrode layer 104 thereby contacts the lateral side 1082
of the first decoration layer 108, and the extension portion 104B
covers a part of the upper surface 1081 of the first decoration
layer 108. In an embodiment, the first decoration layer 108 may
have a relatively less thickness about 2-6 .mu.m. A relatively less
thickness could make the gradient of the climbing slope necessary
for the extension portion 104B extending towards the first
decoration layer 108, thereby reducing or preventing the broken
state or interruption of the sensing electrode layer 104 on its
junction with the first decoration layer 108.
[0021] The second decoration layer 112 may be set in the peripheral
area 100B and on the first decoration layer 108. The second
decoration layer 112 can cover most of the peripheral area 100B and
surround the sensing area 100A. There exists a distance between the
sensing area 100A and the second decoration layer 112, making it
possible for the extension portion 104B of the sensing electrode
layer 104 to extend towards the upper surface 1081 of the first
decoration layer 108, that is, the second decoration layer 112 and
the first decoration layer 108 have different areas. In an
embodiment, the second decoration layer 112 contacts the extension
portion 104B, for example, by aligning to or covering a part of the
extension portion 104B. In an embodiment, the second decoration
layer 112 can have a relatively more thickness (compared with the
first decoration layer 108), for example, about 4-100 .mu.m or
about 8-30 .mu.m for providing the primary masking function. The
second decoration layer 112 may be made of the same material as of
the first decoration layer 108, for example, of a non-black ink
with an optical density less than 3. In an embodiment, the first
decoration layer 108 is same as the second decoration layer in
color, for example, formed by white-color ink layer. In another
embodiment, the first decoration layer 108 and the second
decoration layer 112 may also be made of non-black inks of
different colors.
[0022] The signal line 116 may be formed on the second decoration
layer 112 and is connected to the extension portion 104B of the
sensing electrode layer 104. The signal line 116 can comprise a
first portion 116A located on the upper surface of the second
decoration layer 112 and electrically connected to other circuit
devices (not shown) such as a signal processor, and a second
portion 116B extending from the first portion 116A to cover a
lateral side 1122 of the second decoration layer 112 near the
sensing area 100A and to connect to the extension portion 104B of
the sensing electrode layer 104 for receiving the signals from the
sensing electrode layer 104. This enables the capacitance changes
induced by the sensing portion 104A of the sensing electrode layer
104 to be transmitted to the signal processor of the touch device
100 (not shown) via the signal line 116 for the calculation of
touch signals. In another embodiment, a protective layer 118
covering the second decoration layer 112, the first portion 116A
and second portion 116B of the signal line 116 could be formed. The
protective layer 118 could further provide the effect of masking
and protecting the signal line 116 from the influence of an
external force that causes signal line 116 to break or interrupt.
The protective layer 118 may be made of non-black ink, and may be
formed by photoetching or screen-printing process. The protective
layer 118 may be formed by the same or different-color inks used in
fabricating the first decoration layer 108 and the second
decoration layer 112. In addition, in an alternate embodiment, the
touch device 100 may further comprise a passivation layer (not
shown) to entirely cover all the components set on the second
surface 102B of the protective cover 102 for protecting these
components and providing a flat surface for the attachment of a
display panel.
[0023] In an alternate embodiment, the third decoration layer 114
is necessarily formed on the second decoration layer 112, for
example, on the position between the first portion 116A of the
signal line 116 and the second decoration layer 112. Under the
circumstance of forming the third decoration layer 114, the signal
line 116 can be formed on the third decoration layer 114, and the
protective layer 118 formed subsequently may cover the third
decoration layer 114 and the signal line 116. The third decoration
layer 114 may have a relatively high optical density, for example,
an optical density larger than 3. When the first decoration layer
108 and the second decoration layer 112 are insufficient to serve
as masking function (if both of them give poor masking effect in
white-color state), the third decoration layer 114 can be applied
to attaining the necessary masking effect. The thickness of the
third decoration layer 114 may be about 1.about.10 .mu.m.
[0024] The first decoration layer and the second decoration layer
in the foregoing embodiment are designed to have different areas
and thicknesses, making it possible for the sensing electrode layer
to climb up only a small distance of height (2-6 .mu.m), same as
the thickness of the conventional black ink layer but less than the
thickness of conventional non-black ink decoration layer (larger
than 40.mu.m), whereas the second decoration layer has a relatively
more thickness compared with that of the first decoration layer to
provide the effect of masking the signal line. Therefore, the
signal line can be masked, also the chances for the broken state or
interruption of the sensing electrode layer on its junction with a
non-black decoration layer can be reduced or prevented. The touch
device provided by such an embodiment of the disclosure can have
various non-black frames of different colors, and can enrich the
possibilities in design and promote the enjoyment, meanwhile, can
still maintain the characteristics of being light in weight and
less in thickness. However, it is known to a person skilled in the
art that the areas, thicknesses and optical densities of various
decoration layers can be varied based on the applications of the
disclosure.
[0025] FIGS. 3A-3E are cross-sectional schematic diagrams of the
intermediate stage in fabricating a touch device in accordance with
the embodiment of the disclosure. Initially in FIG. 3A, a
protective cover 102 is provided having a first surface 102A, as a
touch surface, and a second surface 102B on which a first
decoration layer 108 is formed. The area of the protective cover
102 may be delimited as a sensing area 100A and a peripheral area
100B surrounds the sensing area 100A. Other properties of the
protective cover 102 are same as the foregoing embodiment, which
will not be repeated again. The first decoration layer 108 set in
the peripheral area 100B may be formed by any of non-black inks
with optical densities less than 3 and in various ways such as by
an initial deposition process followed by patterning process via
photoetching or screen-printing process. Other properties of the
first decoration layer 108 are same as the foregoing embodiment,
which will not be repeated hereby.
[0026] Referring to FIG. 3B, this step involves forming a sensing
electrode layer 104, wherein most part of the sensing electrode
layer 104 is formed on part of the second surface 102B of the
protective cover 102 and small part of sensing electrode layer 104
is formed on part of the first decoration layer 108. The sensing
electrode layer 104 comprises a sensing portion 104A in the sensing
area 100A and a extension portion 104B extending from the sensing
area 100A to the first decoration layer 108. The sensing portion
104A of the sensing electrode layer 104, located in the sensing
area 100A, can be patterned by photoetching or printing in a manner
as of the first sensing electrodes 104AX and the second sensing
electrodes 104AY arranged in row and column as shown in FIG. 1. As
for the sensing portion 104A of the sensing electrode layer 104 as
shown in FIG. 1, each of the two adjacent first sensing electrodes
104AX are connected by a connecting line 120, whereas the second
sensing electrodes 104AY are separated mutually. The first sensing
electrodes 104AX and the second sensing electrodes 104AY
respectively extend from the sensing area 100A to the upper surface
1081 of the first decoration layer 108 along a lateral side 1082 of
the first decoration layer 108, so as to form the extension portion
104B. Due to an extremely less thickness of the first decoration
layer 108 (about 2-6 .mu.m), the gradient of the climbing slope for
the sensing electrode layer 104 is relatively small, and the
chances for the broken state or interruption of the sensing
electrode layer 104 on its junction with the first decoration layer
108 can be reduced or prevented. Other properties of the sensing
electrode layer 104 are same as the foregoing embodiment, which
will not be repeated hereby. In addition, an insulating layer 126
is further formed on the sensing electrode layer 104. The
insulating layer 126 is formed on the connecting line 120 to
insulate the first sensing electrodes 104AX from the second sensing
electrodes 104AY Subsequently, jumper lines 124 are formed on the
insulating layer 126 to electrically connect each of the two
adjacent second sensing electrodes 104AY.
[0027] Referring to FIG. 3C, after the sensing components in the
sensing area 100A (for example, the sensing electrode layer 104A,
the jumper line 124, the insulating layer 126 etc.) have been
formed, a second decoration layer 112 is formed on the first
decoration layer 108. Depending upon the requirements, a third
decoration layer 114 could be formed on the second decoration layer
112. In an embodiment, the second decoration layer 112 and/or the
third decoration layer 114 can be formed before the formation of
the above-mentioned sensing components. In an embodiment, the
second decoration layer 112 contacts the extension portion 104B,
for example, by aligning to or covering a part of the extension
portion 104B. In an embodiment, the second decoration layer 112 can
be made of the same material and by the same manufacture process as
the first decoration layer 108, with a relatively more thickness
than the first decoration layer 108, for example, about 4-100 .mu.m
or about 8-30 .mu.m. The second decoration layer 112 and/or the
third decoration layer 114 can be formed in the same manufacture
process.
[0028] as the first decoration layer 108. Once this process is
completed, chemical and mechanical grinding can be performed on the
second decoration layer 112 and/or the third decoration layer 114
to remove the extremely thick part of the second decoration layer
112 and/or the third decoration layer 114, and provide a flat
surface for the setting of the signal line 116 (referring to FIG.
3D). The second decoration layer 112 can be made of any of
non-black inks with optical densities less than 3, and can be of
the same or different color as of the first decoration layer 108.
Other properties of the second decoration layer 112 and the third
decoration layer 114 are same as the foregoing embodiment, which
will not he repeated hereby.
[0029] With reference to FIG. 3D, the signal line 116 is formed on
the second decoration layer 112 (or the third decoration layer
114), for example, on the upper surface and the lateral side 1122
of the second decoration layer 112, wherein the signal line 116 is
connected to the extension portion 104B of the sensing electrode
layer 104. The signal line 116 may he made of metallic material,
and can be patterned by photoetching or printing so as to have the
corresponding patterns to those shown in FIG. 1. In addition, the
signal line 116 may include a first portion 116A located on the
upper surface of the second decoration layer 112 (or the third
decoration layer 114) and electrically connected to other circuit
devices of the touch device 100, such as signal processor; and a
second portion 116B, extending from the first portion 116A along
the lateral side 1122 of the second decoration layer 112, to be
connected with the extension portion 104A of the sensing electrode
layer 104 for transmitting the capacitance changes induced by the
sensing portion 104A of the sensing electrode layer 104 to the
signal processor (not shown) of the touch device 100 so as to
conduct the touch-signal calculation. In another embodiment, the
jumper line 124 and the signal line 116 are formed
simultaneously.
[0030] With reference to FIG. 3E, a protective layer 118 can be
formed on the second decoration layer 112 (or the third decoration
layer 114) and the signal line 116, for example, by covering the
first portion 116A and the second portion 116B of the signal line
116, to further provide the effect of masking and protecting the
signal line 116 from the influence of an external force. The
protective layer 118 can be formed by photoetching or
screen-printing by the same-color ink as or a different-color ink
than of the first decoration layer 108 and the second decoration
layer 112. In an alternate embodiment, a passivation layer (not
shown) can be further formed to cover all the components of the
second surface 102B for making physical protection and serving as a
basically flat surface. By these method steps, the main fabrication
of touch panel is completed, and the touch device 100 is formed
accordingly. Subsequently, if there is any need, a display panel
can be further attached to the passivation layer.
[0031] Therefore, in the steps as shown in FIGS. 3A-3E, all various
components shown in FIG. 1 and FIG. 2 are formed, but the pattern
of the sensing electrode layer 104 is not limited to that in
single-layer and double-axes shape. According to different shapes
of the sensing electrode layers 104, the insulating layer 124 and
the jumper line 126 can also be non-essential components, for
example, the pattern of the sensing electrode layer may be designed
in single-layer and single-axis shape or in double-layer and
double-axes shape. All these belong to the protection range of the
disclosure as long as any changes and modifications are made in the
spirit and scope of the disclosure.
[0032] While certain embodiments have been shown and described,
various modifications and substitutions may be made thereto without
departing from the spirit and scope of the disclosure. Therefore,
it is to be understood that the present disclosure has been
described by way of illustration and not limitations.
* * * * *