US20140152909A1 - Touch panel and manufacturing method thereof - Google Patents
Touch panel and manufacturing method thereof Download PDFInfo
- Publication number
- US20140152909A1 US20140152909A1 US13/831,986 US201313831986A US2014152909A1 US 20140152909 A1 US20140152909 A1 US 20140152909A1 US 201313831986 A US201313831986 A US 201313831986A US 2014152909 A1 US2014152909 A1 US 2014152909A1
- Authority
- US
- United States
- Prior art keywords
- color
- transparent conductive
- conductive layer
- touch panel
- patterned transparent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
Definitions
- the present invention relates to a touch panel and a manufacturing method thereof, and more particularly, to a touch panel with color compensation layer placed between sensing pads and a manufacturing method thereof.
- touch panels have been widely used in input interface of various instruments.
- the integration of touch screen functionality and displays into touch panels have increased significantly, including products such as mobile phones, GPS navigation systems, tablet PCs, PDAs, and laptop PCs.
- Conventional touch panel typically includes a glass substrate, a patterned transparent conductive layer, a plurality of bridge electrode layers, and a passivation layer.
- the patterned transparent conductive layer includes a plurality of first sensing stripes and a plurality of sensing pads, in which the first sensing stripes are extended along a first direction.
- Each bridge electrode electrically connects two adjacent sensing pads to each other to form a plurality of second sensing stripes, in which the second sensing stripes are extended along a second direction perpendicular to the first direction so that the first sensing stripes and the second sensing stripes preferably cross each other.
- the passivation layer is disposed on the patterned transparent conductive layer and a portion of the glass substrate is exposed by the patterned transparent conductive layer.
- the patterned transparent conductive layer does not cover the surface of the glass substrate entirely, and as the light color obtained after the light passes through the patterned transparent conductive layer is essentially different from the light color obtained after the light passes through the passivation layer on the glass substrate exposed by the patterned transparent conductive layer, the patterned transparent conductive layer is easily recognized as the light passes through the touch panel thereby causing poor visual performance. Moreover, image displayed by the touch panel is also easily interfered by the patterned transparent conductive layer and the clarity of the image is compromised significantly.
- a touch panel includes a substrate, a patterned transparent conductive layer, and a color compensation layer.
- the patterned transparent conductive layer including a plurality of first sensing pads and a plurality of second sensing pads is disposed on the substrate, in which each of the first sensing pads and each of the second sensing pads adjacent thereto have a first gap therebetween to expose the substrate.
- the color compensation layer is disposed on the substrate and in the first gap and not in contact with the patterned transparent conductive layer.
- a touch panel includes a substrate, a patterned transparent conductive layer, and a color compensation layer.
- the patterned transparent conductive layer including a plurality of first sensing pads and a plurality of second sensing pads is disposed on the substrate, in which each of the first sensing pads and each of the second sensing pads adjacent thereto have a first gap therebetween to expose the substrate and the patterned transparent conductive layer has a first thickness.
- the color compensation layer is disposed on the substrate and in the first gap and contacting the patterned transparent conductive layer, in which the color compensation layer has a second thickness less than or equal to the first thickness.
- a method for fabricating touch panel is disclosed. First, a substrate is provided and a transparent conductive layer is formed on the substrate. Next, a patterned photoresist is formed on the transparent conductive layer, in which the patterned photoresist includes an opening for exposing the transparent conductive layer. The transparent conductive layer is then etched through the opening to form a patterned transparent conductive layer, in which the patterned transparent conductive layer includes a plurality of first sensing pads and a plurality of second sensing pads, and each of the first sensing pads and each of the second sensing pads adjacent thereto have a first gap therebetween and the width of the first gap is larger than the width of the opening. Next, a color compensation layer is covered on the patterned photoresist and the exposed substrate, and a lift off process is carried out to remove the patterned photoresist and the color compensation layer on the patterned photoresist.
- the color of the light obtained after passing through the substrate and the color compensation layer could be substantially the same as the color obtained after passing through the substrate and the patterned transparent conductive layer, thereby compensating the light color passed through each of the first sensing pads and the second sensing pads.
- viewers would not notice the pattern of the patterned transparent conductive layer thereby reducing the visual effect of the patterned transparent conductive layer to a minimal.
- by forming the color compensation layer between each of the first sensing pads and the second sensing pads through lift off process not only controls the position of the color compensation layer precisely but also reduces the cost substantially.
- FIG. 1 illustrates a top view of a touch panel according to a first embodiment of the present invention.
- FIG. 2 illustrates a cross-sectional view of FIG. 1 along the sectional line A-A′.
- FIG. 3 illustrates a cross-sectional view of a touch panel according to a second embodiment of the present invention.
- FIG. 4 illustrates a cross-sectional view of a touch panel according to a third embodiment of the present invention.
- FIG. 5 illustrates a cross-sectional view of a touch panel according to a fourth embodiment of the present invention.
- FIG. 6 illustrates a cross-sectional view of a touch panel according to a fifth embodiment of the present invention.
- FIG. 7 is a flow chart diagram illustrating a manufacturing method of the touch panel according to the first embodiment of the present invention.
- FIGS. 8-11 illustrate a manufacturing method of the touch panel according to the first embodiment of the present invention.
- FIG. 1 illustrates a top view of a touch panel according to a first embodiment of the present invention
- FIG. 2 illustrates a cross-sectional view of FIG. 1 along the sectional line A-A′
- a touch panel 100 includes a substrate 102 , a patterned transparent conductive layer 104 , a color compensation layer 106 , a passivation layer 108 , and a plurality of bridge electrodes 110 .
- the substrate 102 has a first surface 102 a and a second surface 102 b relative to the first surface 102 a , in which the substrate 102 could be a transparent substrate, such as a glass substrate, a plastic substrate, or a quartz substrate.
- the patterned transparent conductive layer 104 and the color compensation layer 106 are disposed on the first surface 102 a of the substrate 102 , in which the patterned transparent conductive layer 104 has a first thickness T 1 and the color compensation layer 106 has a second thickness T 2 .
- the passivation layer 108 is disposed on the patterned transparent conductive layer 104 and the color compensation layer 106 , in which the passivation layer 108 could be composed of transparent insulating material including silicon oxide, silicon nitride, and silicon oxynitride.
- the patterned transparent conductive layer 104 includes a plurality of first sensing pads 104 a , a plurality of second sensing pads 104 b , and a plurality of connecting parts 104 c composed of a first transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO).
- the connecting parts 104 c preferably connect the adjacent first sensing pads 104 a arranged along a first direction D 1 so that the first sensing pads 104 a and the connecting parts 104 c connected thereto could form a first sensing stripe 112 .
- the first sensing pads 104 a and the connecting parts 104 c could form a plurality of first sensing stripes 112 , and the first sensing stripes 112 are arranged sequentially along a second direction D 2 perpendicular to the first direction D 1 such that the first sensing stripes 112 could be used to detect objects of the touch panel 100 on the second direction D 2 .
- the bridge electrodes 110 are disposed horizontally on top of the connecting parts 104 c while being electrically insulated from the connecting parts 104 c .
- the touch panel 100 could further include an insulating layer disposed between the bridge electrodes 110 and the connecting parts 104 c .
- the bridge electrodes 110 are further connected to the adjacent second sensing pads 104 b arranged along the second direction D 2 so that the second sensing pads 104 b and the bridge electrodes 110 could form a second sensing stripe 114 .
- the second sensing pads 104 b and the bridge electrodes 110 could be used to form a plurality of second sensing stripes 114 .
- the second sensing stripes 114 are arranged sequentially along the first direction D 1 such that the second sensing stripes 114 could be used to detect objects of the touch panel 100 on the first direction D 1 . Through the detection of the first sensing stripes 112 and the second sensing stripes 114 , the object position of the touch panel could be detected accordingly.
- each of the first sensing pads 104 a and each of the second sensing pads 104 b adjacent thereto have a first gap G 1 therebetween, in which the first gap G 1 is preferably not covered by any of the patterned transparent conductive layer 104 .
- the first gap G 1 preferably exposes the first surface 102 a of the substrate 102 while the first gap G 1 is preferably between 20 ⁇ m to 30 ⁇ m, but not limited thereto.
- the first sensing stripes could be aligned not perpendicular to the second sensing stripes, but instead be arranged with the second sensing stripes at an angle less than 90 degree.
- first sensing stripes and second sensing stripes could also be arranged according to other layouts and shapes, and not limited thereto.
- the bridge electrodes 110 are disposed above the connecting parts 104 c thereby forming a top bridge architecture
- the bridge electrodes 110 could also be disposed under the connecting parts 104 c to form a bottom bridge architecture, which is also within the scope of the present invention.
- the color compensation layer 106 is disposed on the substrate 102 and within the first gap G 1 , and also between each of the first sensing pads 104 a and the adjacent second sensing pads 104 b .
- the substrate 102 has a first color
- the transparent conductive layer 104 has a second color
- the color compensation layer 106 has a third color.
- Each of the first color, the second color, and the third color of the present invention is defined as a color generated by a light beam with particular color, such as a white light which is the CIE 1931 space color coordinates (1/3, 1/3), penetrating through the substrate 102 , the transparent conductive layer 104 , and the color compensation layer 106 respectively in which the first color, the second color, and the third color could be any coordinates defined by the CIE 1931 color space.
- the third color of the color compensation layer 106 could be between the first color and the second color, hence that CIE 1931 color space coordinates represented by the third color are between the CIE 1931 color space coordinates represented by the first color and the CIE 1931 space color coordinates represented by the second color.
- the third color of the color compensation layer 106 could also be the same as the second color. By doing so, the color obtained by the light beam penetrating through the substrate 102 and the color compensation layer 106 could be substantially the same as the color obtained by the light beam penetrating through the substrate 102 and the patterned transparent conductive layer 104 , so that observers would not notice the presence of the pattern of the patterned transparent conductive layer 104 .
- the color compensation layer 106 is not in contact with the patterned transparent conductive layer 104 , and the color compensation layer 106 and the patterned transparent conductive layer 104 have a second gap G 2 therebetween, in which the gap G 2 is between 0.5 ⁇ m to 5 ⁇ m.
- the second gap G 2 is not easily identified by human eyes.
- the lights penetrating through every region of the touch panel 100 would have substantially same color and equal uniformity.
- the third color of the color compensation layer 106 is determined by the material used for forming the color compensation layer 106 and the second thickness T 2 of the color compensation layer 106 , in which the material of the color compensation layer 106 preferably determines the absorption coefficient, index of refraction, and dispersion coefficient of the color compensation layer 106 .
- the second thickness T 2 of the color compensation layer 106 could be greater than, equal to, or less than the first thickness T 1 of the patterned transparent conductive layer 104 , and could also be adjusted according to the material of the color compensation layer 106 so that the third color of the color compensation layer 106 could be the same as the second color of the patterned transparent conductive layer 104 or between the first color of the substrate 102 and the second color of the patterned transparent conductive layer 104 .
- the color compensation layer 106 and the patterned transparent conductive layer 104 could be composed of same transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO).
- the second thickness T 2 of the color compensation layer 106 is preferably the same as the first thickness T 1 of the patterned transparent conductive layer 104 , so that the third color of the color compensation layer 106 becomes the same as the second color of the patterned transparent conductive layer 104 . By doing so, the lights passing through each region of the touch panel 100 would have no color difference.
- the color compensation layer disclosed in the aforementioned embodiment does not necessarily have to be composed of same material as the patterned transparent conductive layer, but could also be composed of a transparent insulating material such as silicon dioxide, silicon nitride, or oxynitride.
- the second thickness of the color compensation layer is also adjusted according to different thickness and different material of the patterned transparent conductive layer.
- a color compensation layer 106 is formed to be between each of the first sensing pads 104 a and each of the second sensing pads 104 b in this embodiment, in which the third color of the color compensation layer 106 could be identical as the second color of the patterned transparent conductive layer 104 or between the first color of the substrate 102 and the second color of the patterned transparent conductive layer 104 , so that the color obtained after the light beam penetrating the substrate 102 and the color compensation layer 106 could be substantially the same as the color obtained after the light beam penetrating the substrate 102 and the patterned transparent conductive layer 104 .
- the observers would not notice the pattern of the patterned transparent conductive layer 104 thereby preventing interference of the patterned transparent conductive layer 104 to the image of the display panel while improving the visual performance of the touch panel 100 .
- FIG. 3 illustrates a cross-sectional view of a touch panel according to a second embodiment of the present invention.
- the color compensation layer 202 of the touch panel 200 is disposed on the first surface 102 a of the substrate 102 and within the first gap G 1 , and contacts the patterned transparent conductive layer 104 ; that is the color compensation layer 202 contacts each of the first sensing pads 104 a and the second sensing pads 104 b .
- the color compensation layer 202 of this embodiment is composed of a transparent insulating material such as silicon dioxide, silicon nitride, or oxynitride, and the second thickness T 2 of the color compensation layer 202 is equal to or less than the first thickness T 1 of the patterned transparent conductive layer 104 such that the third color of the color compensation layer 202 is equal to the second color of the patterned conductive layer 104 or between the first color of the substrate 102 and the second color of the patterned transparent conductive layer 104 .
- a transparent insulating material such as silicon dioxide, silicon nitride, or oxynitride
- the second thickness T 2 of the color compensation layer 106 could be designed to be less than the first thickness T 1 of the patterned transparent conductive layer 104 during the formation (or deposition) of the color compensation layer 106 so that the photoresist 118 could be lift off much more easily from the patterned transparent conductive layer 104 thereby improving the yield and efficiency of the process.
- FIG. 4 illustrates a cross-sectional view of a touch panel according to a third embodiment of the present invention.
- the touch panel 300 further includes an anti-reflective layer 302 disposed between the patterned transparent conductive layer 104 and the substrate 102 and also between the color compensation layer 106 and the substrate 102 . This preferably improves the visual performance of the entire touch panel 300 .
- the anti-reflective layer of this embodiment could also be applied to the touch panel of the aforementioned second embodiment, which is also within the scope of the present invention.
- FIG. 5 illustrates a cross-sectional view of a touch panel according to a fourth embodiment of the present invention.
- the touch panel 400 further includes an anti-reflective layer 402 disposed on the second surface 102 b of the substrate 102 for improving the visual performance of the entire touch panel 400 .
- the anti-reflective layer of this embodiment could also be applied to the touch panel of the second embodiment addressed previously, which is also within the scope of the present invention.
- FIG. 6 illustrates a cross-sectional view of a touch panel according to a fifth embodiment of the present invention.
- the touch panel 500 further includes a first anti-reflective layer 502 and a second anti-reflective layer 504 , in which the first anti-reflective layer 502 is disposed between the patterned transparent conductive layer 104 and the substrate 102 and between the color compensation layer 106 and the substrate 102 while the second anti-reflective layer 504 is disposed on the second surface 102 b of the substrate 102 .
- the first anti-reflective layer 502 and the second anti-reflective layer 504 the visual performance of the touch panel 500 is improved substantially.
- the first anti-reflective layer and the second anti-reflective layer of this embodiment could also be applied to the touch panel of the second embodiment address previously, which is also within the scope of the present invention.
- FIG. 7 illustrates a flow chart diagram of the manufacturing method of the touch panel according to the first embodiment of the present invention
- FIGS. 8-11 illustrate the manufacturing method of the touch panel in the first embodiment.
- the manufacturing method of the touch panel includes following steps:
- Step S 10 providing a substrate 102 ;
- Step S 12 forming a transparent conductive layer 116 on the substrate 102 ;
- Step S 14 forming a patterned photoresist 118 on the transparent conductive layer 116 , in which the patterned photoresist 118 has an opening 118 a to expose the transparent conductive layer 116 ;
- Step S 16 etching the transparent conductive layer 116 through the opening 118 a to form a patterned transparent conductive layer 104 , in which the patterned transparent conductive layer 104 includes a plurality of first sensing pads 104 a and a plurality of second sensing pads 104 b , and each of the first sensing pads 104 a and each of the second sensing pads 104 b adjacent thereto have a first gap G 1 therebetween to expose the substrate 102 , while the width of each first gap G 1 is greater than the width of the opening 118 a;
- Step S 18 covering a color compensation layer 106 on the patterned photoresist 118 and the exposed substrate 102 ;
- Step S 20 performing a lift off process to remove the patterned photoresist 118 and the color compensation layer 106 on the patterned photoresist 118 ;
- Step S 22 covering a passivation layer 108 on the patterned transparent conductive layer 104 and the color compensation layer 106 .
- the substrate 102 such as a glass substrate, a plastic substrate, or a quartz substrate as revealed in Step S 10 could be first provided.
- the transparent conductive layer 116 could be formed on the substrate 102 through physical vapor deposition (PVD) processes such as evaporation or sputtering process.
- the patterned photoresist 118 could be formed on the transparent conductive layer 116 through photolithography process.
- photoresist material could be first coated onto the transparent conductive layer 116 , and an exposure and development process could be carried out to transfer the pattern of the aforementioned patterned transparent conductive layer 104 onto the photoresist material to form the transparent conductive layer 118 .
- an anti-reflective layer or other insulating layer could be formed on the first surface and/or second surface of the substrate before forming the transparent conductive layer, which is also within the scope of the present invention.
- the patterned transparent conductive layer 104 preferably includes a plurality of first sensing pads 104 a and a plurality of second sensing pads 104 b , in which each of the first sensing pads 104 a and each of the second sensing pads 104 b adjacent thereto have a first gap G 1 therebetween to expose the substrate 102 , as shown in FIG. 1 .
- the etching process of this embodiment preferably etches the transparent conductive layer 116 until forming an undercut so that the width of each of the first gap G 1 of the patterned transparent conductive layer 104 is greater than the width of the opening 118 a.
- the color compensation layer 106 could be formed on the patterned photoresist 118 through PVD process, such as an evaporation or sputtering process, in which a portion of the color compensation layer 106 is preferably deposited on the substrate 102 exposed through the opening 118 a . It should be noted that through the utilization of PVD process, the second thickness T 2 of the color compensation layer 106 could be controlled much more accurately than the conventional printing or spray process, so that the third color of the color compensation layer 106 can be effectively controlled to be the same as the second color of the patterned transparent conductive layer 104 or between the first color and the second color.
- PVD process such as an evaporation or sputtering process
- a lift up process is carried out to remove the patterned photoresist 118 .
- the patterned photoresist 118 could be placed into a solution used for dissolving the patterned photoresist 118 for stripping not only the patterned photoresist 118 but also the color compensation layer 106 on the patterned photoresist 118 .
- the portion of the color compensation layer 106 not on the patterned photoresist 118 and exposed by the opening 118 a preferably remains between each of the first sensing pads 104 a and each of the second sensing pads 104 b on the substrate 102 , in which the color compensation layer 106 and the opening 118 a could have substantially same width. Since the width of each first gap G 1 of the patterned transparent conductive layer 104 is greater than the width of the opening 118 a , the color compensation layer 106 could be not contacting the patterned transparent conductive layer 104 and instead could have a second gap G 2 between the patterned transparent conductive layer 104 , in which the second gap G 2 is preferably between 0.5 ⁇ m to 5 ⁇ m.
- the color compensation layer 106 since the color compensation layer 106 is not in contact with the patterned transparent conductive layer 104 , the color compensation layer 106 could thus be composed of transparent conductive material. It should be noted that by using the lift off process to remove the patterned photoresist 118 and form the color compensation layer 106 on the substrate 102 , the manufacturing method of the touch panel 100 of the present invention could reduce the cost of photomask and resist material substantially and also prevent the issue of poor precision caused during photolithography and etching processes.
- the photoresist 118 on the patterned transparent conductive layer 104 could be removed much more easily during the lift off process thereby increasing the yield and efficiency of the process.
- an insulating layer could be formed on the connecting parts 104 c of the patterned transparent conductive layer 104 , and the bridge electrodes 110 are formed on the insulating layer and the second sensing pads 104 b thereafter.
- a passivation layer 108 is formed on the patterned transparent conductive layer 104 , the bridge electrodes 110 , and the color compensation layer 106 for protecting the layers 104 , 110 , and 106 .
- the color obtained after the light beam passing through the substrate and the color compensation layer could be substantially the same as the color obtained after the light beam passing through the substrate and the patterned transparent conductive layer, thereby compensating the light color passed through each of the first sensing pads and the second sensing pads.
- viewers would not notice the pattern of the patterned transparent conductive layer thereby reducing the visual effect of the patterned transparent conductive layer to a minimal.
- by forming the color compensation layer between each of the first sensing pads and each of the second sensing pads through the lift off process not only controls the position of the color compensation layer precisely but also reduces the cost substantially.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The present invention provides a touch panel including a substrate, a patterned transparent conductive layer, and a color compensation layer. The patterned transparent conductive layer is disposed on the substrate, and includes a plurality of first sensing pads and a plurality of second sensing pads, and each first sensing pad and each sensing pad adjacent thereto have a first gap between them that exposing the substrate. The color compensation layer is disposed on the substrate in the first gap, and is not in contact with the patterned transparent conductive layer.
Description
- 1. Field of the Invention
- The present invention relates to a touch panel and a manufacturing method thereof, and more particularly, to a touch panel with color compensation layer placed between sensing pads and a manufacturing method thereof.
- 2. Description of the Prior Art
- Having the advantage of man-machine interactive characteristics, touch panels have been widely used in input interface of various instruments. As the application of consumer electronic products progressed rapidly in recent years, the integration of touch screen functionality and displays into touch panels have increased significantly, including products such as mobile phones, GPS navigation systems, tablet PCs, PDAs, and laptop PCs.
- Conventional touch panel typically includes a glass substrate, a patterned transparent conductive layer, a plurality of bridge electrode layers, and a passivation layer. The patterned transparent conductive layer includes a plurality of first sensing stripes and a plurality of sensing pads, in which the first sensing stripes are extended along a first direction. Each bridge electrode electrically connects two adjacent sensing pads to each other to form a plurality of second sensing stripes, in which the second sensing stripes are extended along a second direction perpendicular to the first direction so that the first sensing stripes and the second sensing stripes preferably cross each other. The passivation layer is disposed on the patterned transparent conductive layer and a portion of the glass substrate is exposed by the patterned transparent conductive layer.
- However, the patterned transparent conductive layer does not cover the surface of the glass substrate entirely, and as the light color obtained after the light passes through the patterned transparent conductive layer is essentially different from the light color obtained after the light passes through the passivation layer on the glass substrate exposed by the patterned transparent conductive layer, the patterned transparent conductive layer is easily recognized as the light passes through the touch panel thereby causing poor visual performance. Moreover, image displayed by the touch panel is also easily interfered by the patterned transparent conductive layer and the clarity of the image is compromised significantly.
- Hence, how to effectively lower the visual influence of patterned transparent conductive layer has become an important task in the field.
- It is therefore an objective of the present invention to provide a touch panel and a manufacturing method thereof for reducing the effect caused by the patterned transparent conductive layer visually.
- According to a preferred embodiment of the present invention, a touch panel is disclosed. The touch panel includes a substrate, a patterned transparent conductive layer, and a color compensation layer. The patterned transparent conductive layer including a plurality of first sensing pads and a plurality of second sensing pads is disposed on the substrate, in which each of the first sensing pads and each of the second sensing pads adjacent thereto have a first gap therebetween to expose the substrate. The color compensation layer is disposed on the substrate and in the first gap and not in contact with the patterned transparent conductive layer.
- According to another aspect of the present invention, a touch panel is disclosed. The touch panel includes a substrate, a patterned transparent conductive layer, and a color compensation layer. The patterned transparent conductive layer including a plurality of first sensing pads and a plurality of second sensing pads is disposed on the substrate, in which each of the first sensing pads and each of the second sensing pads adjacent thereto have a first gap therebetween to expose the substrate and the patterned transparent conductive layer has a first thickness. The color compensation layer is disposed on the substrate and in the first gap and contacting the patterned transparent conductive layer, in which the color compensation layer has a second thickness less than or equal to the first thickness.
- According to another aspect of the present invention, a method for fabricating touch panel is disclosed. First, a substrate is provided and a transparent conductive layer is formed on the substrate. Next, a patterned photoresist is formed on the transparent conductive layer, in which the patterned photoresist includes an opening for exposing the transparent conductive layer. The transparent conductive layer is then etched through the opening to form a patterned transparent conductive layer, in which the patterned transparent conductive layer includes a plurality of first sensing pads and a plurality of second sensing pads, and each of the first sensing pads and each of the second sensing pads adjacent thereto have a first gap therebetween and the width of the first gap is larger than the width of the opening. Next, a color compensation layer is covered on the patterned photoresist and the exposed substrate, and a lift off process is carried out to remove the patterned photoresist and the color compensation layer on the patterned photoresist.
- By disposing a color compensation layer between each of the first sensing pads and the second sensing pads while the third color of the color compensation layer is between the first color of the substrate and the second color of the patterned transparent conductive layer, the color of the light obtained after passing through the substrate and the color compensation layer could be substantially the same as the color obtained after passing through the substrate and the patterned transparent conductive layer, thereby compensating the light color passed through each of the first sensing pads and the second sensing pads. By doing so, viewers would not notice the pattern of the patterned transparent conductive layer thereby reducing the visual effect of the patterned transparent conductive layer to a minimal. Also, by forming the color compensation layer between each of the first sensing pads and the second sensing pads through lift off process not only controls the position of the color compensation layer precisely but also reduces the cost substantially.
- These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings.
-
FIG. 1 illustrates a top view of a touch panel according to a first embodiment of the present invention. -
FIG. 2 illustrates a cross-sectional view ofFIG. 1 along the sectional line A-A′. -
FIG. 3 illustrates a cross-sectional view of a touch panel according to a second embodiment of the present invention. -
FIG. 4 illustrates a cross-sectional view of a touch panel according to a third embodiment of the present invention. -
FIG. 5 illustrates a cross-sectional view of a touch panel according to a fourth embodiment of the present invention. -
FIG. 6 illustrates a cross-sectional view of a touch panel according to a fifth embodiment of the present invention. -
FIG. 7 is a flow chart diagram illustrating a manufacturing method of the touch panel according to the first embodiment of the present invention. -
FIGS. 8-11 illustrate a manufacturing method of the touch panel according to the first embodiment of the present invention. - Referring to
FIGS. 1-2 ,FIG. 1 illustrates a top view of a touch panel according to a first embodiment of the present invention, andFIG. 2 illustrates a cross-sectional view ofFIG. 1 along the sectional line A-A′. As shown inFIGS. 1-2 , atouch panel 100 includes asubstrate 102, a patterned transparentconductive layer 104, acolor compensation layer 106, apassivation layer 108, and a plurality ofbridge electrodes 110. Thesubstrate 102 has afirst surface 102 a and asecond surface 102 b relative to thefirst surface 102 a, in which thesubstrate 102 could be a transparent substrate, such as a glass substrate, a plastic substrate, or a quartz substrate. The patterned transparentconductive layer 104 and thecolor compensation layer 106 are disposed on thefirst surface 102 a of thesubstrate 102, in which the patterned transparentconductive layer 104 has a first thickness T1 and thecolor compensation layer 106 has a second thickness T2. Thepassivation layer 108 is disposed on the patterned transparentconductive layer 104 and thecolor compensation layer 106, in which thepassivation layer 108 could be composed of transparent insulating material including silicon oxide, silicon nitride, and silicon oxynitride. In this embodiment, the patterned transparentconductive layer 104 includes a plurality offirst sensing pads 104 a, a plurality ofsecond sensing pads 104 b, and a plurality of connectingparts 104 c composed of a first transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO). The connectingparts 104 c preferably connect the adjacentfirst sensing pads 104 a arranged along a first direction D1 so that thefirst sensing pads 104 a and the connectingparts 104 c connected thereto could form afirst sensing stripe 112. Thefirst sensing pads 104 a and the connectingparts 104 c could form a plurality offirst sensing stripes 112, and thefirst sensing stripes 112 are arranged sequentially along a second direction D2 perpendicular to the first direction D1 such that thefirst sensing stripes 112 could be used to detect objects of thetouch panel 100 on the second direction D2. Thebridge electrodes 110 are disposed horizontally on top of the connectingparts 104 c while being electrically insulated from the connectingparts 104 c. For instance, thetouch panel 100 could further include an insulating layer disposed between thebridge electrodes 110 and the connectingparts 104 c. Thebridge electrodes 110 are further connected to the adjacentsecond sensing pads 104 b arranged along the second direction D2 so that thesecond sensing pads 104 b and thebridge electrodes 110 could form asecond sensing stripe 114. By doing so, thesecond sensing pads 104 b and thebridge electrodes 110 could be used to form a plurality ofsecond sensing stripes 114. Thesecond sensing stripes 114 are arranged sequentially along the first direction D1 such that thesecond sensing stripes 114 could be used to detect objects of thetouch panel 100 on the first direction D1. Through the detection of thefirst sensing stripes 112 and thesecond sensing stripes 114, the object position of the touch panel could be detected accordingly. Additionally, each of thefirst sensing pads 104 a and each of thesecond sensing pads 104 b adjacent thereto have a first gap G1 therebetween, in which the first gap G1 is preferably not covered by any of the patterned transparentconductive layer 104. In this embodiment, the first gap G1 preferably exposes thefirst surface 102 a of thesubstrate 102 while the first gap G1 is preferably between 20 μm to 30 μm, but not limited thereto. In other embodiments of the present invention, the first sensing stripes could be aligned not perpendicular to the second sensing stripes, but instead be arranged with the second sensing stripes at an angle less than 90 degree. In addition to the arrangements described above, the first sensing stripes and second sensing stripes could also be arranged according to other layouts and shapes, and not limited thereto. Moreover, despite the fact that thebridge electrodes 110 are disposed above the connectingparts 104 c thereby forming a top bridge architecture, thebridge electrodes 110 could also be disposed under the connectingparts 104 c to form a bottom bridge architecture, which is also within the scope of the present invention. - The
color compensation layer 106 is disposed on thesubstrate 102 and within the first gap G1, and also between each of thefirst sensing pads 104 a and the adjacentsecond sensing pads 104 b. Preferably, thesubstrate 102 has a first color, the transparentconductive layer 104 has a second color, and thecolor compensation layer 106 has a third color. Each of the first color, the second color, and the third color of the present invention is defined as a color generated by a light beam with particular color, such as a white light which is the CIE 1931 space color coordinates (1/3, 1/3), penetrating through thesubstrate 102, the transparentconductive layer 104, and thecolor compensation layer 106 respectively in which the first color, the second color, and the third color could be any coordinates defined by the CIE 1931 color space. In addition, the third color of thecolor compensation layer 106 could be between the first color and the second color, hence that CIE 1931 color space coordinates represented by the third color are between the CIE 1931 color space coordinates represented by the first color and the CIE 1931 space color coordinates represented by the second color. The third color of thecolor compensation layer 106 could also be the same as the second color. By doing so, the color obtained by the light beam penetrating through thesubstrate 102 and thecolor compensation layer 106 could be substantially the same as the color obtained by the light beam penetrating through thesubstrate 102 and the patterned transparentconductive layer 104, so that observers would not notice the presence of the pattern of the patterned transparentconductive layer 104. - In this embodiment, the
color compensation layer 106 is not in contact with the patterned transparentconductive layer 104, and thecolor compensation layer 106 and the patterned transparentconductive layer 104 have a second gap G2 therebetween, in which the gap G2 is between 0.5 μm to 5 μm. As minimal distance identifiable by the human eyes typically is 10 μm, the second gap G2, being less than 10 μm, is not easily identified by human eyes. Hence, by placing acolor compensation layer 106 between each of thefirst sensing pads 104 a and each of thesecond sensing pads 104 b and using thecolor compensation layer 106 to cover majority of thesubstrate 102 not covered by the patterned transparentconductive layer 104, the lights penetrating through every region of thetouch panel 100 would have substantially same color and equal uniformity. - The third color of the
color compensation layer 106 is determined by the material used for forming thecolor compensation layer 106 and the second thickness T2 of thecolor compensation layer 106, in which the material of thecolor compensation layer 106 preferably determines the absorption coefficient, index of refraction, and dispersion coefficient of thecolor compensation layer 106. The second thickness T2 of thecolor compensation layer 106 could be greater than, equal to, or less than the first thickness T1 of the patterned transparentconductive layer 104, and could also be adjusted according to the material of thecolor compensation layer 106 so that the third color of thecolor compensation layer 106 could be the same as the second color of the patterned transparentconductive layer 104 or between the first color of thesubstrate 102 and the second color of the patterned transparentconductive layer 104. For instance, thecolor compensation layer 106 and the patterned transparentconductive layer 104 could be composed of same transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO). The second thickness T2 of thecolor compensation layer 106 is preferably the same as the first thickness T1 of the patterned transparentconductive layer 104, so that the third color of thecolor compensation layer 106 becomes the same as the second color of the patterned transparentconductive layer 104. By doing so, the lights passing through each region of thetouch panel 100 would have no color difference. It should be noted that the color compensation layer disclosed in the aforementioned embodiment does not necessarily have to be composed of same material as the patterned transparent conductive layer, but could also be composed of a transparent insulating material such as silicon dioxide, silicon nitride, or oxynitride. Moreover, the second thickness of the color compensation layer is also adjusted according to different thickness and different material of the patterned transparent conductive layer. - It should be noted that a
color compensation layer 106 is formed to be between each of thefirst sensing pads 104 a and each of thesecond sensing pads 104 b in this embodiment, in which the third color of thecolor compensation layer 106 could be identical as the second color of the patterned transparentconductive layer 104 or between the first color of thesubstrate 102 and the second color of the patterned transparentconductive layer 104, so that the color obtained after the light beam penetrating thesubstrate 102 and thecolor compensation layer 106 could be substantially the same as the color obtained after the light beam penetrating thesubstrate 102 and the patterned transparentconductive layer 104. By doing so, the observers would not notice the pattern of the patterned transparentconductive layer 104 thereby preventing interference of the patterned transparentconductive layer 104 to the image of the display panel while improving the visual performance of thetouch panel 100. - In addition to the aforementioned embodiments, other variations and embodiments of the present invention are addressed below, and in order to simplify the description of each embodiment and highlight the difference between each embodiment, elements addressed previously are labeled with same reference numbers and the description of the elements addressed in the aforementioned embodiments is not repeated.
- Referring to
FIG. 3 ,FIG. 3 illustrates a cross-sectional view of a touch panel according to a second embodiment of the present invention. As shown inFIG. 3 , as compared with the first embodiment, thecolor compensation layer 202 of thetouch panel 200 is disposed on thefirst surface 102 a of thesubstrate 102 and within the first gap G1, and contacts the patterned transparentconductive layer 104; that is thecolor compensation layer 202 contacts each of thefirst sensing pads 104 a and thesecond sensing pads 104 b. Thecolor compensation layer 202 of this embodiment is composed of a transparent insulating material such as silicon dioxide, silicon nitride, or oxynitride, and the second thickness T2 of thecolor compensation layer 202 is equal to or less than the first thickness T1 of the patterned transparentconductive layer 104 such that the third color of thecolor compensation layer 202 is equal to the second color of the patternedconductive layer 104 or between the first color of thesubstrate 102 and the second color of the patterned transparentconductive layer 104. It should be noted that if thephotoresist 118 coated on the patterned transparentconductive layer 104 is removed by a lift off process during the manufacturing method, the second thickness T2 of thecolor compensation layer 106 could be designed to be less than the first thickness T1 of the patterned transparentconductive layer 104 during the formation (or deposition) of thecolor compensation layer 106 so that thephotoresist 118 could be lift off much more easily from the patterned transparentconductive layer 104 thereby improving the yield and efficiency of the process. - Referring to
FIG. 4 ,FIG. 4 illustrates a cross-sectional view of a touch panel according to a third embodiment of the present invention. As shown inFIG. 4 , as compared with the first embodiment, thetouch panel 300 further includes ananti-reflective layer 302 disposed between the patterned transparentconductive layer 104 and thesubstrate 102 and also between thecolor compensation layer 106 and thesubstrate 102. This preferably improves the visual performance of theentire touch panel 300. It should be noted that the anti-reflective layer of this embodiment could also be applied to the touch panel of the aforementioned second embodiment, which is also within the scope of the present invention. - Referring to
FIG. 5 ,FIG. 5 illustrates a cross-sectional view of a touch panel according to a fourth embodiment of the present invention. As shown inFIG. 5 , as compared with the first embodiment, thetouch panel 400 further includes ananti-reflective layer 402 disposed on thesecond surface 102 b of thesubstrate 102 for improving the visual performance of theentire touch panel 400. It should be noted that the anti-reflective layer of this embodiment could also be applied to the touch panel of the second embodiment addressed previously, which is also within the scope of the present invention. - Referring to
FIG. 6 ,FIG. 6 illustrates a cross-sectional view of a touch panel according to a fifth embodiment of the present invention. As shown inFIG. 6 , as compared with the first embodiment, thetouch panel 500 further includes a firstanti-reflective layer 502 and a secondanti-reflective layer 504, in which the firstanti-reflective layer 502 is disposed between the patterned transparentconductive layer 104 and thesubstrate 102 and between thecolor compensation layer 106 and thesubstrate 102 while the secondanti-reflective layer 504 is disposed on thesecond surface 102 b of thesubstrate 102. Through the firstanti-reflective layer 502 and the secondanti-reflective layer 504, the visual performance of thetouch panel 500 is improved substantially. It should be noted that the first anti-reflective layer and the second anti-reflective layer of this embodiment could also be applied to the touch panel of the second embodiment address previously, which is also within the scope of the present invention. - A manufacturing method of a touch panel in the present invention is described below. It should be noted that even though the aforementioned first embodiment is used as an example, the manufacturing method of the present invention is not limited thereto. Referring to
FIGS. 7-11 andFIGS. 1-2 simultaneously, in whichFIG. 7 illustrates a flow chart diagram of the manufacturing method of the touch panel according to the first embodiment of the present invention, andFIGS. 8-11 illustrate the manufacturing method of the touch panel in the first embodiment. As shown inFIG. 7 , the manufacturing method of the touch panel includes following steps: - Step S10: providing a
substrate 102; - Step S12: forming a transparent
conductive layer 116 on thesubstrate 102; - Step S14: forming a
patterned photoresist 118 on the transparentconductive layer 116, in which the patternedphotoresist 118 has anopening 118 a to expose the transparentconductive layer 116; - Step S16: etching the transparent
conductive layer 116 through the opening 118 a to form a patterned transparentconductive layer 104, in which the patterned transparentconductive layer 104 includes a plurality offirst sensing pads 104 a and a plurality ofsecond sensing pads 104 b, and each of thefirst sensing pads 104 a and each of thesecond sensing pads 104 b adjacent thereto have a first gap G1 therebetween to expose thesubstrate 102, while the width of each first gap G1 is greater than the width of the opening 118 a; - Step S18: covering a
color compensation layer 106 on the patternedphotoresist 118 and the exposedsubstrate 102; - Step S20: performing a lift off process to remove the patterned
photoresist 118 and thecolor compensation layer 106 on the patternedphotoresist 118; and - Step S22: covering a
passivation layer 108 on the patterned transparentconductive layer 104 and thecolor compensation layer 106. - As shown in
FIG. 8 , thesubstrate 102, such as a glass substrate, a plastic substrate, or a quartz substrate as revealed in Step S10 could be first provided. Next, as shown in Step S12, the transparentconductive layer 116 could be formed on thesubstrate 102 through physical vapor deposition (PVD) processes such as evaporation or sputtering process. Next, as shown in Step S14, the patternedphotoresist 118 could be formed on the transparentconductive layer 116 through photolithography process. For instance, photoresist material could be first coated onto the transparentconductive layer 116, and an exposure and development process could be carried out to transfer the pattern of the aforementioned patterned transparentconductive layer 104 onto the photoresist material to form the transparentconductive layer 118. It should be noted that in a variation of the present invention, an anti-reflective layer or other insulating layer could be formed on the first surface and/or second surface of the substrate before forming the transparent conductive layer, which is also within the scope of the present invention. - Next, as shown in
FIG. 9 , such as revealed in the Step S16, an etching process is performed to transfer the pattern of the patternedphotoresist 118 to the transparentconductive layer 116 for forming the patterned transparentconductive layer 104. The patterned transparentconductive layer 104 preferably includes a plurality offirst sensing pads 104 a and a plurality ofsecond sensing pads 104 b, in which each of thefirst sensing pads 104 a and each of thesecond sensing pads 104 b adjacent thereto have a first gap G1 therebetween to expose thesubstrate 102, as shown inFIG. 1 . It should be noted that the etching process of this embodiment preferably etches the transparentconductive layer 116 until forming an undercut so that the width of each of the first gap G1 of the patterned transparentconductive layer 104 is greater than the width of the opening 118 a. - As shown in
FIG. 10 , such as revealed in the Step S18, thecolor compensation layer 106 could be formed on the patternedphotoresist 118 through PVD process, such as an evaporation or sputtering process, in which a portion of thecolor compensation layer 106 is preferably deposited on thesubstrate 102 exposed through the opening 118 a. It should be noted that through the utilization of PVD process, the second thickness T2 of thecolor compensation layer 106 could be controlled much more accurately than the conventional printing or spray process, so that the third color of thecolor compensation layer 106 can be effectively controlled to be the same as the second color of the patterned transparentconductive layer 104 or between the first color and the second color. - As shown in
FIG. 11 , such as revealed in the Step S20, a lift up process is carried out to remove the patternedphotoresist 118. For instance, the patternedphotoresist 118 could be placed into a solution used for dissolving the patternedphotoresist 118 for stripping not only the patternedphotoresist 118 but also thecolor compensation layer 106 on the patternedphotoresist 118. By doing so, the portion of thecolor compensation layer 106 not on the patternedphotoresist 118 and exposed by the opening 118 a preferably remains between each of thefirst sensing pads 104 a and each of thesecond sensing pads 104 b on thesubstrate 102, in which thecolor compensation layer 106 and theopening 118 a could have substantially same width. Since the width of each first gap G1 of the patterned transparentconductive layer 104 is greater than the width of the opening 118 a, thecolor compensation layer 106 could be not contacting the patterned transparentconductive layer 104 and instead could have a second gap G2 between the patterned transparentconductive layer 104, in which the second gap G2 is preferably between 0.5 μm to 5 μm. In addition, since thecolor compensation layer 106 is not in contact with the patterned transparentconductive layer 104, thecolor compensation layer 106 could thus be composed of transparent conductive material. It should be noted that by using the lift off process to remove the patternedphotoresist 118 and form thecolor compensation layer 106 on thesubstrate 102, the manufacturing method of thetouch panel 100 of the present invention could reduce the cost of photomask and resist material substantially and also prevent the issue of poor precision caused during photolithography and etching processes. Also, as noted previously, if the second thickness T2 of thecolor compensation layer 106 is less than the first thickness T1 of the patterned transparentconductive layer 104 during the process of forming thecolor compensation layer 106, thephotoresist 118 on the patterned transparentconductive layer 104 could be removed much more easily during the lift off process thereby increasing the yield and efficiency of the process. - As shown in
FIG. 1 andFIG. 2 , such as revealed in the Step S22, before forming apassivation layer 108, an insulating layer could be formed on the connectingparts 104 c of the patterned transparentconductive layer 104, and thebridge electrodes 110 are formed on the insulating layer and thesecond sensing pads 104 b thereafter. Last, apassivation layer 108 is formed on the patterned transparentconductive layer 104, thebridge electrodes 110, and thecolor compensation layer 106 for protecting thelayers - Overall, by disposing a color compensation layer between each of the first sensing pads and each of the second sensing pads while the third color of the color compensation layer is between the first color of the substrate and the second color of the patterned transparent conductive layer, the color obtained after the light beam passing through the substrate and the color compensation layer could be substantially the same as the color obtained after the light beam passing through the substrate and the patterned transparent conductive layer, thereby compensating the light color passed through each of the first sensing pads and the second sensing pads. By doing so, viewers would not notice the pattern of the patterned transparent conductive layer thereby reducing the visual effect of the patterned transparent conductive layer to a minimal. Also, by forming the color compensation layer between each of the first sensing pads and each of the second sensing pads through the lift off process not only controls the position of the color compensation layer precisely but also reduces the cost substantially.
- Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.
Claims (18)
1. A touch panel, comprising:
a substrate;
a patterned transparent conductive layer disposed on the substrate, wherein the patterned transparent conductive layer comprises a plurality of first sensing pads and a plurality of second sensing pads, wherein each of the first sensing pads and each of the second sensing pads adjacent thereto have a first gap therebetween; and
a color compensation layer disposed on the substrate and in the first gap, and the color compensation layer being not in contact with the patterned transparent conductive layer.
2. The touch panel according to claim 1 , wherein the substrate comprises a first color, the patterned transparent conductive layer comprises a second color, and the color compensation layer comprises a third color, wherein the third color is the same as the second color or between the first color and the second color.
3. The touch panel according to claim 1 , wherein the color compensation layer and the patterned transparent conductive layer comprise same material.
4. The touch panel according to claim 1 , wherein the color compensation layer comprises an insulating material.
5. The touch panel according to claim 1 , wherein the color compensation layer and the patterned transparent conductive layer comprise a second gap therebetween, wherein the second gap is between 0.5 μm to 5 μm.
6. The touch panel according to claim 1 , further comprising a passivation layer disposed on the patterned transparent conductive layer and the color compensation layer.
7. A touch panel, comprising:
a substrate;
a patterned transparent conductive layer disposed on the substrate, wherein the patterned transparent conductive layer comprises a plurality of first sensing pads and a plurality of second sensing pads, wherein each of the first sensing pads and each of the second sensing pads adjacent thereto have a first gap therebetween and the patterned transparent conductive layer comprises a first thickness; and
a color compensation layer disposed on the substrate and in the first gap and contacting the patterned transparent conductive layer, wherein the color compensation layer comprises a second thickness less than or equal to the first thickness.
8. The touch panel according to claim 7 , wherein the substrate comprises a first color, the patterned transparent conductive layer comprises a second color, and the color compensation layer comprises a third color, wherein the third color is the same as the second color or in between the first color and the second color.
9. The touch panel according to claim 7 , wherein the color compensation layer comprises an insulating material.
10. The touch panel according to claim 7 , wherein the second thickness of the color compensation layer is less than the first thickness of the patterned transparent conductive layer.
11. A manufacturing method of a touch panel, comprising:
providing a substrate;
forming a transparent conductive layer on the substrate;
forming a patterned photoresist on the transparent conductive layer, wherein the patterned photoresist comprises an opening for exposing the transparent conductive layer;
etching the transparent conductive layer through the opening for forming a patterned transparent conductive layer, wherein the patterned transparent conductive layer comprises a plurality of first sensing pads and a plurality of second sensing pads, wherein each of the first sensing pads and each of the second sensing pads adjacent thereto have a first gap therebetween and a width of the first gap is larger than a width of the opening;
covering a color compensation layer on the patterned photoresist and the exposed substrate; and
performing a lift off process for removing the patterned photoresist and the color compensation layer on the patterned photoresist.
12. The manufacturing method of the touch panel according to claim 11 , wherein the color compensation layer not contacting the patterned transparent conductive layer.
13. The manufacturing method of the touch panel according to claim 12 , wherein the color compensation layer and the patterned transparent conductive layer comprise a second gap therebetween, wherein the second gap is between 0.5 μm to 5 μm.
14. The manufacturing method of the touch panel according to claim 11 , wherein the substrate comprises a first color, the patterned transparent conductive layer comprises a second color, and the color compensation layer comprises a third color, wherein the third color is the same as the second color or between the first color and the second color.
15. The manufacturing method of the touch panel according to claim 11 , wherein the color compensation layer and the transparent conductive layer comprise same material.
16. The manufacturing method of the touch panel according to claim 11 , wherein the color compensation layer comprises an insulating material.
17. The manufacturing method of the touch panel according to claim 11 , wherein the color compensation layer contacts the patterned transparent conductive layer, the patterned transparent conductive layer comprises a first thickness, and the color compensation layer comprises a second thickness equal to or less than the first thickness.
18. The manufacturing method of the touch panel according to claim 11 , further comprising covering a passivation layer on the patterned transparent conductive layer and the color compensation layer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/052,886 US9983706B2 (en) | 2012-11-30 | 2016-02-25 | Manufacturing method of touch panel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW101144955A TWI472981B (en) | 2012-11-30 | 2012-11-30 | Touch panel and manufacturing method thereof |
TW101144955 | 2012-11-30 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/052,886 Continuation US9983706B2 (en) | 2012-11-30 | 2016-02-25 | Manufacturing method of touch panel |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140152909A1 true US20140152909A1 (en) | 2014-06-05 |
Family
ID=50825122
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/831,986 Abandoned US20140152909A1 (en) | 2012-11-30 | 2013-03-15 | Touch panel and manufacturing method thereof |
US15/052,886 Active 2033-08-03 US9983706B2 (en) | 2012-11-30 | 2016-02-25 | Manufacturing method of touch panel |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/052,886 Active 2033-08-03 US9983706B2 (en) | 2012-11-30 | 2016-02-25 | Manufacturing method of touch panel |
Country Status (2)
Country | Link |
---|---|
US (2) | US20140152909A1 (en) |
TW (1) | TWI472981B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150286319A1 (en) * | 2014-04-04 | 2015-10-08 | Tpk Touch Systems (Xiamen) Inc. | Circuit device and manufacturing method thereof |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI623873B (en) * | 2014-09-01 | 2018-05-11 | 東友精細化工有限公司 | Transparent electrode laminate and touch screen panel including the same |
CN107704135A (en) * | 2017-10-12 | 2018-02-16 | 京东方科技集团股份有限公司 | A kind of contact panel and preparation method thereof, touch control display apparatus |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090213090A1 (en) * | 2008-02-27 | 2009-08-27 | Norio Mamba | Display Panel |
US20090315854A1 (en) * | 2008-06-18 | 2009-12-24 | Epson Imaging Devices Corporation | Capacitance type input device and display device with input function |
US20100245285A1 (en) * | 2009-03-24 | 2010-09-30 | Wen-Chun Wang | Capacitive touch panel |
US8421759B2 (en) * | 2008-11-05 | 2013-04-16 | Au Optronics Corporation | Touch-sensing substrate, color filter substrate and touch-sensing liquid crystal display |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100881695B1 (en) * | 2007-08-17 | 2009-02-06 | 삼성전기주식회사 | Printed circuit board with embedded capacitors and method for manufacturing thereof |
CN100495139C (en) * | 2007-10-10 | 2009-06-03 | 友达光电股份有限公司 | Touching control panel and its manufacturing method |
CN101539827A (en) * | 2008-03-21 | 2009-09-23 | 统宝光电股份有限公司 | Image display system |
TWI333275B (en) * | 2008-05-09 | 2010-11-11 | Au Optronics Corp | Method for fabricating light sensor |
CN101859213B (en) * | 2009-04-13 | 2012-08-29 | 群康科技(深圳)有限公司 | Making method of capacitor-type touch panel |
KR20110005611A (en) * | 2009-07-10 | 2011-01-18 | 주식회사 비즈모델라인 | System and method for managing otp using user's media, otp device and recording medium |
CN101694605B (en) * | 2009-10-27 | 2012-10-03 | 友达光电股份有限公司 | Touch panel |
JP5755752B2 (en) * | 2010-11-09 | 2015-07-29 | ティーピーケイ タッチ ソリューションズ インコーポレーテッド | Touch panel device |
EP3521986B1 (en) * | 2011-01-19 | 2020-05-20 | Lg Innotek Co. Ltd | Touch panel |
TWI459255B (en) * | 2011-08-04 | 2014-11-01 | Innolux Corp | Touch panel, touch display apparatus using the same and manufacturing method thereof |
KR101363151B1 (en) * | 2011-09-06 | 2014-02-14 | 삼성전자주식회사 | Transparent circuit substrate for touchscreen, method for fabricating the same and touchscreen comprising the same |
TWI453639B (en) * | 2012-02-07 | 2014-09-21 | Chunghwa Picture Tubes Ltd | Touch panel |
KR102017155B1 (en) * | 2012-11-01 | 2019-09-03 | 삼성디스플레이 주식회사 | Touch screen panel and method for manufacturing the same |
-
2012
- 2012-11-30 TW TW101144955A patent/TWI472981B/en active
-
2013
- 2013-03-15 US US13/831,986 patent/US20140152909A1/en not_active Abandoned
-
2016
- 2016-02-25 US US15/052,886 patent/US9983706B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090213090A1 (en) * | 2008-02-27 | 2009-08-27 | Norio Mamba | Display Panel |
US20090315854A1 (en) * | 2008-06-18 | 2009-12-24 | Epson Imaging Devices Corporation | Capacitance type input device and display device with input function |
US8421759B2 (en) * | 2008-11-05 | 2013-04-16 | Au Optronics Corporation | Touch-sensing substrate, color filter substrate and touch-sensing liquid crystal display |
US20100245285A1 (en) * | 2009-03-24 | 2010-09-30 | Wen-Chun Wang | Capacitive touch panel |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150286319A1 (en) * | 2014-04-04 | 2015-10-08 | Tpk Touch Systems (Xiamen) Inc. | Circuit device and manufacturing method thereof |
US9760225B2 (en) * | 2014-04-04 | 2017-09-12 | Tpk Touch Systems (Xiamen) Inc. | Circuit device and manufacturing method thereof |
Also Published As
Publication number | Publication date |
---|---|
TW201421316A (en) | 2014-06-01 |
US20160170515A1 (en) | 2016-06-16 |
TWI472981B (en) | 2015-02-11 |
US9983706B2 (en) | 2018-05-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI482211B (en) | Touch device and method for fabricating the same | |
JP6702890B2 (en) | Array substrate, manufacturing method and driving method thereof, and display device | |
US10203819B2 (en) | Touch screen, fabrication method thereof and display device | |
KR101403809B1 (en) | Liquid crystal display device and method for manufacturing same | |
US20180356925A1 (en) | Touch substrate, method for fabricating the same, touch panel | |
US20170205910A1 (en) | Touch display panel and manufacturing method thereof, touch display device | |
US10664112B2 (en) | Method of manufacturing a touch module | |
US10198136B2 (en) | OGS touch screen, manufacturing method thereof and display device | |
WO2017008450A1 (en) | In-plane switching array substrate and fabrication method thereof, and display device | |
US20190056818A1 (en) | Touch substrate, method for manufacturing the same, and touch display device | |
JP2015094821A (en) | Liquid crystal display device | |
TW201340185A (en) | Touch panel and touch display panel and method of making the same | |
US9632636B2 (en) | Manufacture method of touch panel | |
KR102649110B1 (en) | Array Substrate For Touch Display Device And Method Of Fabricating The Same | |
WO2018000480A1 (en) | Array substrate, touch display, and electronic device | |
US20120105342A1 (en) | Touch Panel, Display Device and Manufacturing Method of Touch Panel | |
US8568599B1 (en) | Touch panel fabricating method | |
US9886148B2 (en) | Touch screen, method for producing touch screen, touch display device | |
US20160306450A1 (en) | Method for manufacturing touch panel, touch panel and touch display device | |
US9983706B2 (en) | Manufacturing method of touch panel | |
US9645688B2 (en) | OGS touch screen substrate and method of manufacturing the same, and related apparatus | |
SG185212A1 (en) | Single side touch panel structure and manufacturing method thereof | |
US9430109B2 (en) | Touch screen panel and method for manufacturing the same, and display device | |
KR101690600B1 (en) | Display Device With Integrated Touch Screen and Method for Manufacturing The Same | |
EP3258351B1 (en) | Ogs touchscreen and manufacturing method therefor, and ogs touch device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HANNSTOUCH SOLUTION INCORPORATED, TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIAO, SIAN-ZONG;CHUANG, YAO-CHIH;CHEN, HAN-MING;AND OTHERS;REEL/FRAME:030008/0711 Effective date: 20130306 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |