CN109358776A - Touch panel and display device - Google Patents
Touch panel and display device Download PDFInfo
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- CN109358776A CN109358776A CN201811218857.5A CN201811218857A CN109358776A CN 109358776 A CN109358776 A CN 109358776A CN 201811218857 A CN201811218857 A CN 201811218857A CN 109358776 A CN109358776 A CN 109358776A
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- 239000010408 film Substances 0.000 claims abstract description 107
- 239000003990 capacitor Substances 0.000 claims abstract description 97
- 239000010410 layer Substances 0.000 claims abstract description 70
- 239000011241 protective layer Substances 0.000 claims abstract description 46
- 239000011521 glass Substances 0.000 claims abstract description 42
- 229920000620 organic polymer Polymers 0.000 claims abstract description 25
- 239000010409 thin film Substances 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 9
- 230000010287 polarization Effects 0.000 claims description 29
- 239000000853 adhesive Substances 0.000 claims description 22
- 230000001070 adhesive effect Effects 0.000 claims description 22
- 230000003287 optical effect Effects 0.000 claims description 16
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 13
- 239000012790 adhesive layer Substances 0.000 description 26
- 239000000463 material Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 9
- 230000004224 protection Effects 0.000 description 8
- 230000001681 protective effect Effects 0.000 description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000006750 UV protection Effects 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 238000004383 yellowing Methods 0.000 description 4
- 229920002284 Cellulose triacetate Polymers 0.000 description 2
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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
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)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
It includes: substrate that the present invention, which provides a kind of touch panel and display device, the touch panel,；Tft layer and color film layer above the substrate；The liquid crystal layer being sealed between the tft layer and color film layer；Structure of polarized light above the color film layer；Protective layer above the structure of polarized light；Wherein, the structure of polarized light have with the color adjacent first surface of film layer and the second surface adjacent with the protective layer, be integrated with first capacitor pole plate at least one of described first surface and second surface.The present invention reduces glass film or organic polymer thin film of the one or two layers for integrated capacitance pole plate, reduces process complexity, drastically reduce cost by the way that at least one of two pole plates of touch control capacitance are integrated into structure of polarized light surface.
Description
Technical Field
The invention relates to the field of electronic display, in particular to a touch panel and a display device.
Background
With the development of large-size display applications, there is an increasing demand for human-computer interaction, and touch applications become an important medium in human-computer interaction. The Capacitive Touch technology (CTP) only needs to Touch and does not need pressure to generate signals, has the advantages of high response speed, wear resistance, long service life, low maintenance cost and the like, and is widely applied to the field of large-size Touch.
In the existing touch panel, the capacitive touch panel is combined in the display panel in an externally hanging manner, the capacitive touch panel and the rest of the display panel need to be combined together through glue, so that the requirement on the process is high, the yield of a panel display unit can be greatly influenced in the processing process, the processing cost is high, and the large-scale application of the touch panel is limited.
Disclosure of Invention
The invention provides a touch panel and a display device, which are used for solving the technical problems of low yield and high cost caused by the fact that a capacitive touch panel needs to be combined in a display panel in a plug-in mode.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
a touch panel, comprising:
a substrate;
the thin film transistor layer and the color film layer are positioned above the substrate;
the liquid crystal layer is sealed between the thin film transistor layer and the color film layer;
the polarizing structure is positioned above the color film layer;
a protective layer over the polarizing structure; wherein,
the polarizing structure is provided with a first surface adjacent to the color film layer and a second surface adjacent to the protective layer, and a first capacitor plate is integrated on at least one of the first surface and the second surface; wherein,
a second capacitor plate is integrated on the other of the first surface and the second surface of the polarization structure; or
The touch panel further comprises a capacitive functional film located between the polarizing structure and the protective layer, and a second capacitive polar plate is integrated on the surface of the capacitive functional film.
According to one aspect of the invention, the first and second capacitor plates are parallel to each other and equal in area.
According to one aspect of the invention, the first capacitor plate is integrated on the second surface, the capacitor function film is a glass film, and the second capacitor plate is integrated on the surface of the glass film.
According to one aspect of the invention, the glass film has a first glass surface adjacent to the polarizing structure and a second glass surface adjacent to the protective layer, the second capacitive plate being integrated on the first glass surface.
According to one aspect of the invention, the glass film is bonded between the polarizing structure and the protective layer by a capacitive OCA optical adhesive.
According to one aspect of the invention, the first capacitor plate is integrated on the second surface, the capacitor function film is an organic polymer film, and the second capacitor plate is integrated on the surface of the organic polymer film.
According to one aspect of the invention, the organic polymer thin film has a first organic surface adjacent to the polarizing structure and a second organic surface adjacent to the protective layer, and the second capacitor plate is integrated on the first organic surface.
According to one aspect of the present invention, the organic polymer film is bonded between the polarizing structure and the protective layer by a capacitive OCA optical adhesive.
According to one aspect of the present invention, the material of the first capacitor plate and the second capacitor plate is indium tin oxide, and the first surface and the second surface are covered by a coating method.
Accordingly, the present invention also provides a display device, which includes a touch panel, wherein the touch panel includes:
a substrate;
the thin film transistor layer and the color film layer are positioned above the substrate;
the liquid crystal layer is sealed between the thin film transistor layer and the color film layer;
the polarizing structure is positioned above the color film layer;
a protective layer over the polarizing structure; wherein,
the polarizing structure is provided with a first surface adjacent to the color film layer and a second surface adjacent to the protective layer, and a first capacitor plate is integrated on at least one of the first surface and the second surface; wherein,
a second capacitor plate is integrated on the other of the first surface and the second surface of the polarization structure; or
The touch panel further comprises a capacitive functional film located between the polarizing structure and the protective layer, and a second capacitive polar plate is integrated on the surface of the capacitive functional film.
According to one aspect of the invention, the first and second capacitor plates are parallel to each other and equal in area.
According to one aspect of the invention, the first capacitor plate is integrated on the second surface, the capacitor function film is a glass film, and the second capacitor plate is integrated on the surface of the glass film.
According to one aspect of the invention, the glass film has a first glass surface adjacent to the polarizing structure and a second glass surface adjacent to the protective layer, the second capacitive plate being integrated on the first glass surface.
According to one aspect of the invention, the glass film is bonded between the polarizing structure and the protective layer by a capacitive OCA optical adhesive.
According to one aspect of the invention, the first capacitor plate is integrated on the second surface, the capacitor function film is an organic polymer film, and the second capacitor plate is integrated on the surface of the organic polymer film.
According to one aspect of the invention, the organic polymer thin film has a first organic surface adjacent to the polarizing structure and a second organic surface adjacent to the protective layer, and the second capacitor plate is integrated on the first organic surface.
According to one aspect of the present invention, the organic polymer film is bonded between the polarizing structure and the protective layer by a capacitive OCA optical adhesive.
According to one aspect of the present invention, the material of the first capacitor plate and the second capacitor plate is indium tin oxide, and the first surface and the second surface are covered by a coating method.
The invention has the beneficial effects that: by integrating at least one of the two electrode plates of the touch capacitor on the surface of the polarizing structure, one or two layers of glass films or organic polymer films for integrating the capacitor electrode plates are reduced. Because the polar plate of the touch sensing capacitor is directly integrated on the polarized structure, the external capacitor structure in the prior art is replaced, and the influence of the external structure on the product yield is reduced. Therefore, the invention reduces the process complexity and greatly reduces the cost.
Drawings
FIG. 1 is a schematic diagram of a polarizing structure in one embodiment of the invention;
FIG. 2 is a schematic diagram of a polarizing structure with a first capacitive plate integrated therein according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a polarization structure with integrated first and second capacitor plates according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of a display device having a polarizing structure integrated with a first capacitor plate and a second capacitor plate according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a display device having a polarizing structure integrated with a first capacitor plate according to an embodiment of the invention;
fig. 6 is a schematic structural diagram of a display device having a polarizing structure integrated with a first capacitor plate according to another embodiment of the present invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
The present invention will be described in detail below with reference to the accompanying drawings.
Specifically, the invention provides a touch panel and a display device, which are used for solving the technical problems of low yield and high cost caused by the fact that a capacitive touch panel needs to be combined in a display panel in a plug-in mode. Referring to fig. 4, the present invention provides a touch panel, including:
a substrate 100;
a thin-film transistor layer 190 and a color film layer 170 over the substrate 100;
a liquid crystal layer 180 sealed between thin-film transistor layer 190 and color film layer 170;
a polarizing structure 140 located above the color film layer 170;
a protective layer 110 over the polarizing structure 140; wherein,
the polarizing structure 140 has a first surface adjacent to the color film layer 170 and a second surface adjacent to the protective layer 110, at least one of the first and second surfaces having a first capacitor plate 130 integrated thereon; a second capacitor plate 150 is integrated on the other of the first surface and the second surface of the polarization structure 140; or
The touch panel further includes a capacitive functional film located between the polarization structure 140 and the protection layer 110, and a second capacitive plate is integrated on the surface of the capacitive functional film.
Preferably, the first capacitor plate and the second capacitor plate are parallel to each other and have the same area.
In this embodiment, the structure of the polarization structure 140 is as shown in fig. 1, and includes a polarization layer 220, and a protection layer 210 adhered to both sides of the polarization layer 220. The material of the polarizing layer 220 is polyvinyl alcohol, PVA. Since PVA is very easily hydrolyzed, in order to protect physical properties of the polarizing film, a protective film is formed on each side of the polarizing layer 220, and in this case, triacetyl cellulose, TAC, is used as a material of the protective film 210. TAC has high light transmittance and good water resistance, and also has a certain mechanical strength, and is a preferable material for the protective film 210.
In this embodiment, referring to fig. 2 in particular, the material of the first capacitor plate 150 and the second capacitor plate 130 is indium tin oxide, and the first surface and the second surface are covered by a coating method, that is, coated on the protective film 210. As the material of the capacitor plate, the thickness of the indium tin oxide in the invention is only thousands of angstroms, and the indium tin oxide can be perfectly used for the capacitor plate of the touch display film due to the high transmissivity of the indium oxide and the strong conductivity of the tin oxide. In practice, the method for coating indium tin oxide is not limited to sputtering, evaporation, etc., and will not be described herein.
The polarizing structure 140 coated with the first capacitor plate 150 and the second capacitor plate 130 is connected to the protective layer 110 through the first adhesive layer 120, and connected to the color film layer 170 through the second adhesive layer 160. The first adhesive layer 120 and the second adhesive layer 160 may cover the entire surface of the polarization structure 140, or only cover a part of the surface of the polarization structure 140, and a gap exists between the polarization structure 140 not covered by the adhesive layers and an adjacent structure, so that the gap can be used for absorbing pressure generated during touch control, and liquid crystals below the gap are distorted and deformed under the action of touch control pressure to affect the display effect.
The first adhesive layer 120 and the second adhesive layer 160 may be OCA optical adhesives. The OCA optical adhesive is a double-sided adhesive tape without a base material, and has the advantages of clarity, high light transmission, high adhesion, high weather resistance, water resistance, high temperature resistance, ultraviolet resistance, controlled thickness and uniform distance, and can not cause yellowing, peeling and deterioration after long-term use, thereby being the best adhesive for a touch screen. Of course, other adhesives may be used for the first adhesive layer 120 and the second adhesive layer 160, and are not described herein again.
In the embodiment, the two electrode plates of the touch capacitor are integrated on the surface of the polarizing structure, so that glass films or organic polymer films for integrating the electrode plates of the capacitor are reduced. Because the polar plate of the touch sensing capacitor is directly integrated on the polarized structure, the external capacitor structure in the prior art is replaced, and the influence of the external structure on the product yield is reduced. Therefore, the invention reduces the process complexity and greatly reduces the cost.
The present invention also provides another embodiment in which the polarizing structure 140 is integrated with only the first capacitor plate 150, as shown in fig. 3. Wherein the glass film has a first glass surface adjacent to the polarizing structure and a second glass surface adjacent to the protective layer, the second capacitive plate being integrated on the first glass surface. Specifically, the glass film is adhered between the polarizing structure and the protective layer through a capacitive OCA optical cement.
In this embodiment, since the protective layer 110 is made of glass, in order to reduce the complexity of the process flow and reduce the number of film forming processes, the protective layer 110 is used as a glass film for integrating the second capacitor plate 130. Referring to fig. 5, fig. 5 is a schematic structural diagram of a display device having a polarization structure 140 integrated with a first capacitor plate 150 in the present embodiment. Wherein the first capacitor plate 150 is integrated on the second surface, and the second capacitor plate 130 is integrated on the surface of the protection layer 110 adjacent to the polarization structure 140.
In the embodiment, the protective layer 110 is adopted to replace a glass film to integrate the second capacitor plate, so that the external hanging type capacitor structure in the prior art can be replaced, and the influence of the external hanging type structure on the product yield is reduced. Therefore, the invention reduces the process complexity and greatly reduces the cost.
Fig. 6 is a schematic structural diagram of a display device having a polarization structure integrated with a first capacitor plate according to another embodiment of the present invention, wherein the first capacitor plate 150 is integrated on the second surface, the touch panel further includes an organic polymer film 114 located between the polarization structure 140 and the protection layer 110, and a second capacitor plate 130 is integrated on the surface of the organic polymer film. The organic polymer thin film 114 has a first organic surface adjacent to the polarizing structure 140 and a second organic surface adjacent to the protective layer, and the second capacitor plate 130 is integrated on the first organic surface. The organic polymer film 114 is bonded between the polarizing structure and the protective layer by a third adhesive layer 112.
The third adhesive layer 112 may also be OCA optical adhesive. The OCA optical adhesive is a double-sided adhesive tape without a base material, and has the advantages of clarity, high light transmission, high adhesion, high weather resistance, water resistance, high temperature resistance, ultraviolet resistance, controlled thickness and uniform distance, and can not cause yellowing, peeling and deterioration after long-term use, thereby being the best adhesive for a touch screen. Of course, other adhesives may be used for the first adhesive layer 120 and the second adhesive layer 160, and are not described herein again.
Accordingly, the present invention also provides a display device, which includes a touch panel, where the touch panel includes:
a substrate 100;
a thin-film transistor layer 190 and a color film layer 170 over the substrate 100;
a liquid crystal layer 180 sealed between thin-film transistor layer 190 and color film layer 170;
a polarizing structure 140 located above the color film layer 170;
a protective layer 110 over the polarizing structure 140; wherein,
the polarizing structure 140 has a first surface adjacent to the color film layer 170 and a second surface adjacent to the protective layer 110, at least one of the first and second surfaces having a first capacitor plate 130 integrated thereon; a second capacitor plate 150 is integrated on the other of the first surface and the second surface of the polarization structure 140; or
The touch panel further includes a capacitive functional film located between the polarization structure 140 and the protection layer 110, and a second capacitive plate is integrated on the surface of the capacitive functional film.
In this embodiment, the structure of the polarization structure 140 is as shown in fig. 1, and includes a polarization layer 220, and a protection layer 210 adhered to both sides of the polarization layer 220. The material of the polarizing layer 220 is polyvinyl alcohol, PVA. Since PVA is very easily hydrolyzed, in order to protect physical properties of the polarizing film, a protective film is formed on each side of the polarizing layer 220, and in this case, triacetyl cellulose, TAC, is used as a material of the protective film 210. TAC has high light transmittance and good water resistance, and also has a certain mechanical strength, and is a preferable material for the protective film 210.
In this embodiment, referring to fig. 2 in particular, the material of the first capacitor plate 150 and the second capacitor plate 130 is indium tin oxide, and the first surface and the second surface are covered by a coating method, that is, coated on the protective film 210. As the material of the capacitor plate, the thickness of the indium tin oxide in the invention is only thousands of angstroms, and the indium tin oxide can be perfectly used for the capacitor plate of the touch display film due to the high transmissivity of the indium oxide and the strong conductivity of the tin oxide. In practice, the method for coating indium tin oxide is not limited to sputtering, evaporation, etc., and will not be described herein.
The polarizing structure 140 coated with the first capacitor plate 150 and the second capacitor plate 130 is connected to the protective layer 110 through the first adhesive layer 120, and connected to the color film layer 170 through the second adhesive layer 160. The first adhesive layer 120 and the second adhesive layer 160 may cover the entire surface of the polarization structure 140, or only cover a part of the surface of the polarization structure 140, and a gap exists between the polarization structure 140 not covered by the adhesive layers and an adjacent structure, so that the gap can be used for absorbing pressure generated during touch control, and liquid crystals below the gap are distorted and deformed under the action of touch control pressure to affect the display effect.
The first adhesive layer 120 and the second adhesive layer 160 may be OCA optical adhesives. The OCA optical adhesive is a double-sided adhesive tape without a base material, and has the advantages of clarity, high light transmission, high adhesion, high weather resistance, water resistance, high temperature resistance, ultraviolet resistance, controlled thickness and uniform distance, and can not cause yellowing, peeling and deterioration after long-term use, thereby being the best adhesive for a touch screen. Of course, other adhesives may be used for the first adhesive layer 120 and the second adhesive layer 160, and are not described herein again.
In the embodiment, the two electrode plates of the touch capacitor are integrated on the surface of the polarizing structure, so that glass films or organic polymer films for integrating the electrode plates of the capacitor are reduced. Because the polar plate of the touch sensing capacitor is directly integrated on the polarized structure, the external capacitor structure in the prior art is replaced, and the influence of the external structure on the product yield is reduced. Therefore, the invention reduces the process complexity and greatly reduces the cost.
The present invention also provides another embodiment in which the polarizing structure 140 is integrated with only the first capacitor plate 150, as shown in fig. 3. Wherein the glass film has a first glass surface adjacent to the polarizing structure and a second glass surface adjacent to the protective layer, the second capacitive plate being integrated on the first glass surface. Specifically, the glass film is adhered between the polarizing structure and the protective layer through a capacitive OCA optical cement.
In this embodiment, since the protective layer 110 is made of glass, in order to reduce the complexity of the process flow and reduce the number of film forming processes, the protective layer 110 is used as a glass film for integrating the second capacitor plate 130. Referring to fig. 5, fig. 5 is a schematic structural diagram of a display device having a polarization structure 140 integrated with a first capacitor plate 150 in the present embodiment. Wherein the first capacitor plate 150 is integrated on the second surface, and the second capacitor plate 130 is integrated on the surface of the protection layer 110 adjacent to the polarization structure 140.
In the embodiment, the protective layer 110 is adopted to replace a glass film to integrate the second capacitor plate, so that the external hanging type capacitor structure in the prior art can be replaced, and the influence of the external hanging type structure on the product yield is reduced. Therefore, the invention reduces the process complexity and greatly reduces the cost.
In another embodiment of the present invention, as shown in fig. 6, the first capacitor plate 150 is integrated on the second surface, and the touch panel further includes an organic polymer film 114 between the polarization structure 140 and the protection layer 110, and the second capacitor plate 130 is integrated on the surface of the organic polymer film. The organic polymer thin film 114 has a first organic surface adjacent to the polarizing structure 140 and a second organic surface adjacent to the protective layer, and the second capacitor plate 130 is integrated on the first organic surface. The organic polymer film 114 is bonded between the polarizing structure and the protective layer by a third adhesive layer 112.
The third adhesive layer 112 may also be OCA optical adhesive. The OCA optical adhesive is a double-sided adhesive tape without a base material, and has the advantages of clarity, high light transmission, high adhesion, high weather resistance, water resistance, high temperature resistance, ultraviolet resistance, controlled thickness and uniform distance, and can not cause yellowing, peeling and deterioration after long-term use, thereby being the best adhesive for a touch screen. Of course, other adhesives may be used for the first adhesive layer 120 and the second adhesive layer 160, and are not described herein again.
The invention has the beneficial effects that: by integrating at least one of the two electrode plates of the touch capacitor on the surface of the polarizing structure, one or two layers of glass films or organic polymer films for integrating the capacitor electrode plates are reduced. Because the polar plate of the touch sensing capacitor is directly integrated on the polarized structure, the external capacitor structure in the prior art is replaced, and the influence of the external structure on the product yield is reduced. Therefore, the invention reduces the process complexity and greatly reduces the cost.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. A touch panel, comprising:
a substrate;
the thin film transistor layer and the color film layer are positioned above the substrate;
the liquid crystal layer is sealed between the thin film transistor layer and the color film layer;
the polarizing structure is positioned above the color film layer;
a protective layer over the polarizing structure; wherein,
the polarizing structure is provided with a first surface adjacent to the color film layer and a second surface adjacent to the protective layer, and a first capacitor plate is integrated on at least one of the first surface and the second surface; wherein,
a second capacitor plate is integrated on the other of the first surface and the second surface of the polarization structure; or
The touch panel further comprises a capacitive functional film located between the polarizing structure and the protective layer, and a second capacitive polar plate is integrated on the surface of the capacitive functional film.
2. The touch panel of claim 1, wherein the first and second capacitor plates are parallel to each other and have equal areas.
3. The touch panel of claim 1, wherein the first capacitor plate is integrated on the second surface, the capacitor function film is a glass film, and a second capacitor plate is integrated on the surface of the glass film.
4. The touch panel of claim 3, wherein the glass film has a first glass surface adjacent to the polarizing structure and a second glass surface adjacent to the protective layer, and wherein the second capacitive plate is integrated on the first glass surface.
5. The touch panel according to claim 4, wherein the glass film is bonded between the polarization structure and the protective layer by a capacitive OCA optical adhesive.
6. The touch panel of claim 1, wherein the first capacitor plate is integrated on the second surface, the capacitor functional film is an organic polymer film, and a second capacitor plate is integrated on the surface of the organic polymer film.
7. The touch panel of claim 6, wherein the organic polymer film has a first organic surface adjacent to the polarizing structure and a second organic surface adjacent to the protective layer, and wherein the second capacitive plate is integrated on the first organic surface.
8. The touch panel according to claim 7, wherein the organic polymer film is bonded between the polarizing structure and the protective layer by a capacitive OCA optical adhesive.
9. The touch panel of claim 2, wherein the first and second capacitor plates are made of indium tin oxide, and the first and second surfaces are covered by a coating method.
10. A display device comprising a touch panel, the touch panel comprising:
a substrate;
the thin film transistor layer and the color film layer are positioned above the substrate;
the liquid crystal layer is sealed between the thin film transistor layer and the color film layer;
the polarizing structure is positioned above the color film layer;
a protective layer over the polarizing structure; wherein,
the polarizing structure is provided with a first surface adjacent to the color film layer and a second surface adjacent to the protective layer, and a first capacitor plate is integrated on at least one of the first surface and the second surface; wherein,
a second capacitor plate is integrated on the other of the first surface and the second surface of the polarization structure; or
The touch panel further comprises a capacitive functional film located between the polarizing structure and the protective layer, and a second capacitive polar plate is integrated on the surface of the capacitive functional film.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811218857.5A CN109358776B (en) | 2018-10-19 | 2018-10-19 | Touch panel and display device |
| PCT/CN2018/115585 WO2020077716A1 (en) | 2018-10-19 | 2018-11-15 | Touch panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811218857.5A CN109358776B (en) | 2018-10-19 | 2018-10-19 | Touch panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109358776A true CN109358776A (en) | 2019-02-19 |
| CN109358776B CN109358776B (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811218857.5A Active CN109358776B (en) | 2018-10-19 | 2018-10-19 | Touch panel and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109358776B (en) |
| WO (1) | WO2020077716A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111081742A (en) * | 2019-12-11 | 2020-04-28 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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| CN102650917A (en) * | 2011-02-28 | 2012-08-29 | 乐金显示有限公司 | Liquid crystal display device comprising touch screen |
| CN103543868A (en) * | 2012-07-12 | 2014-01-29 | 和鑫光电股份有限公司 | Touch panel and liquid crystal touch screen using same |
| CN104063098A (en) * | 2013-03-22 | 2014-09-24 | 群创光电股份有限公司 | Touch-control type display device and manufacturing method thereof |
| CN106980426A (en) * | 2017-05-04 | 2017-07-25 | 广东欧珀移动通信有限公司 | Display device, display screen, touch screen and electronic equipment |
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- 2018-10-19 CN CN201811218857.5A patent/CN109358776B/en active Active
- 2018-11-15 WO PCT/CN2018/115585 patent/WO2020077716A1/en active Application Filing
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|---|---|---|---|---|
| CN102650917A (en) * | 2011-02-28 | 2012-08-29 | 乐金显示有限公司 | Liquid crystal display device comprising touch screen |
| CN103543868A (en) * | 2012-07-12 | 2014-01-29 | 和鑫光电股份有限公司 | Touch panel and liquid crystal touch screen using same |
| CN104063098A (en) * | 2013-03-22 | 2014-09-24 | 群创光电股份有限公司 | Touch-control type display device and manufacturing method thereof |
| CN106980426A (en) * | 2017-05-04 | 2017-07-25 | 广东欧珀移动通信有限公司 | Display device, display screen, touch screen and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111081742A (en) * | 2019-12-11 | 2020-04-28 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020077716A1 (en) | 2020-04-23 |
| CN109358776B (en) | 2020-08-11 |
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