CN111596792A - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
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- CN111596792A CN111596792A CN202010377820.8A CN202010377820A CN111596792A CN 111596792 A CN111596792 A CN 111596792A CN 202010377820 A CN202010377820 A CN 202010377820A CN 111596792 A CN111596792 A CN 111596792A
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- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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Abstract
The invention provides a touch display panel and a display device, wherein the touch display panel comprises: a first substrate; the second substrate is arranged opposite to the first substrate and comprises a common electrode close to the first substrate side, and the common electrode extends along the first direction; the liquid crystal layer is filled between the first substrate and the second substrate; the touch sensing electrode layer is arranged on one side of the second substrate, which is far away from the first substrate, and comprises touch sensing electrodes extending along a second direction, and the second direction is vertical to the first direction; the touch control protective layer is arranged on one side, far away from the second substrate, of the touch control sensing electrode layer; when the touch display panel performs a touch operation, the common electrode serves as a touch driving electrode. Through the embedded touch control design, the penetration rate and the screen resolution of the touch control display panel are improved, and through the multiplexing of the common electrode and the touch control driving electrode, the touch control electrode material is saved, and the cost is saved.
Description
Technical Field
The application relates to the field of display, in particular to a touch display panel and a display device.
Background
The touch screen is used as the simplest human-computer interaction tool, and has great market value. The touch screen technology popular in the market at present is mainly of an external hanging type, and the touch mode has the technical problems of low penetration rate, low resolution, high cost and the like.
Therefore, the development trend of the future market is to develop an in-cell touch display technology with better development effect.
Disclosure of Invention
The invention provides a touch display panel and a display device, which are used for improving the technical problems of low penetration rate, low resolution, high cost and the like in the conventional touch display technology.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the invention provides a touch display panel, which comprises
A first substrate;
a second substrate disposed opposite to the first substrate, the second substrate including a common electrode adjacent to the first substrate side, the common electrode extending in a first direction;
the liquid crystal layer is filled between the first substrate and the second substrate;
the touch sensing electrode layer is arranged on one side, far away from the first substrate, of the second substrate and comprises touch sensing electrodes extending along a second direction, and the second direction is perpendicular to the first direction;
the touch control protective layer is arranged on one side, far away from the second substrate, of the touch control sensing electrode layer;
when the touch display panel performs touch operation, the common electrode is used as a touch driving electrode.
In the touch display panel provided by the invention, the touch display panel further comprises a polarizer and a cover plate, the polarizer is arranged on one side of the touch protection layer far away from the touch sensing electrode layer, and the cover plate is arranged on one side of the polarizer far away from the touch protection layer.
In the touch display panel provided by the invention, the touch display panel further comprises a polarizer and a cover plate, the polarizer is arranged between the second substrate and the touch sensing electrode layer, and the cover plate is arranged on one side of the touch protection layer away from the touch sensing electrode layer.
In the touch display panel provided by the invention, the touch driving electrodes and the touch sensing electrodes are strip electrodes.
In the touch display panel provided by the invention, the touch driving electrodes and the touch sensing electrodes are all diamond-shaped electrodes.
In the touch display panel provided by the invention, the common electrode is simultaneously connected with the display driving chip and the touch driving chip.
In the touch display panel provided by the invention, the common electrode is connected with the display touch integrated driving chip.
Meanwhile, the present invention provides a display device, which includes a backlight and a touch display panel, wherein the touch display panel includes:
a first substrate;
a second substrate disposed opposite to the first substrate, the second substrate including a common electrode adjacent to the first substrate side, the common electrode extending in a first direction;
the liquid crystal layer is filled between the first substrate and the second substrate;
the touch sensing electrode layer is arranged on one side, far away from the first substrate, of the second substrate and comprises touch sensing electrodes extending along a second direction, and the second direction is perpendicular to the first direction;
the touch control protective layer is arranged on one side, far away from the second substrate, of the touch control sensing electrode layer;
when the touch display panel performs touch operation, the common electrode is used as a touch driving electrode.
In the display device provided by the invention, the touch display panel further comprises a polarizer and a cover plate, the polarizer is arranged on one side of the touch protection layer far away from the touch sensing electrode layer, and the cover plate is arranged on one side of the polarizer far away from the touch protection layer.
In the display device provided by the invention, the touch display panel further comprises a polarizer and a cover plate, the polarizer is arranged between the second substrate and the touch sensing electrode layer, and the cover plate is arranged on one side of the touch protection layer away from the touch sensing electrode layer.
The invention provides a touch display panel and a display device, wherein the touch display panel comprises: a first substrate; the second substrate is arranged opposite to the first substrate and comprises a common electrode close to the first substrate side, and the common electrode extends along the first direction; the liquid crystal layer is filled between the first substrate and the second substrate; the touch sensing electrode layer is arranged on one side of the second substrate, which is far away from the first substrate, and comprises touch sensing electrodes extending along a second direction, and the second direction is vertical to the first direction; the touch control protective layer is arranged on one side, far away from the second substrate, of the touch control sensing electrode layer; when the touch display panel performs a touch operation, the common electrode serves as a touch driving electrode. The touch control display panel is additionally provided with touch control sensing electrodes, the common electrode layer is patterned into common electrodes perpendicular to the touch control sensing electrodes, and when the touch control display panel performs display operation, common electric signals are input into the common electrodes through a time division multiplexing driving means to drive the touch control display panel to display; when the touch display panel performs touch operation, the common electrode serves as a touch driving electrode to form a touch circuit with the touch sensing electrode, and a touch driving signal is input, so that touch and display of the touch display panel are synchronously performed. Through the embedded touch control design, the penetration rate and the screen resolution of the touch control display panel are improved, and through the multiplexing of the common electrode and the touch control driving electrode, the touch control electrode material is saved, and the cost is saved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a first cross-sectional view of a touch display panel according to an embodiment of the invention.
Fig. 2 is a second cross-sectional view of a touch display panel according to an embodiment of the invention.
Fig. 3 is a schematic plan view illustrating a first overlay of a touch display panel according to an embodiment of the invention.
Fig. 4 is a schematic plan view of a second touch display panel according to an embodiment of the invention.
The attached drawings are annotated: a first substrate 110; a second substrate 120; a liquid crystal layer 130; a touch sensing electrode layer 140; a touch protection layer 150; a polarizer 160; a cover plate 170; a common electrode 121; touch driving electrodes 121; touch sensing electrode 140
Detailed Description
While the embodiments and/or examples of the present invention will be described in detail and fully with reference to the specific embodiments thereof, it should be understood that the embodiments and/or examples described below are only a part of the embodiments and/or examples of the present invention and are not intended to limit the scope of the invention. All other embodiments and/or examples, which can be obtained by a person skilled in the art without making any inventive step, based on the embodiments and/or examples of the present invention, belong to the scope of protection of the present invention.
Directional terms used in the present invention, such as [ upper ], [ lower ], [ left ], [ right ], [ front ], [ rear ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terminology is used for the purpose of describing and understanding the invention and is in no way limiting. The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
Aiming at the technical problems of low penetration rate, low resolution, high cost and the like in the existing touch display technology, the invention provides a touch display panel which can relieve the problem.
Referring to fig. 1 to 4, a touch display panel provided in an embodiment of the present invention includes:
a first substrate 110;
a second substrate 120 disposed opposite to the first substrate 110, the second substrate 120 including a common electrode 121 adjacent to the first substrate 110, the common electrode 121 extending in a first direction;
a liquid crystal layer 130 filled between the first substrate 110 and the second substrate 120;
a touch sensing electrode layer disposed on a side of the second substrate 120 away from the first substrate 110, including a touch sensing electrode 140 extending along a second direction, the second direction being perpendicular to the first direction;
a touch protection layer 150 disposed on a side of the touch sensing electrode layer 140 away from the second substrate 120;
when the touch display panel performs a touch operation, the common electrode 121 serves as a touch driving electrode.
The present embodiment provides a touch display panel, including: a first substrate; the second substrate is arranged opposite to the first substrate and comprises a common electrode close to the first substrate side, and the common electrode extends along the first direction; the liquid crystal layer is filled between the first substrate and the second substrate; the touch sensing electrode layer is arranged on one side of the second substrate, which is far away from the first substrate, and comprises touch sensing electrodes extending along a second direction, and the second direction is vertical to the first direction; the touch control protective layer is arranged on one side, far away from the second substrate, of the touch control sensing electrode layer; when the touch display panel performs a touch operation, the common electrode serves as a touch driving electrode. The touch control display panel is additionally provided with touch control sensing electrodes, the common electrode layer is patterned into common electrodes perpendicular to the touch control sensing electrodes, and when the touch control display panel performs display operation, common electric signals are input into the common electrodes through a time division multiplexing driving means to drive the touch control display panel to display; when the touch display panel performs touch operation, the common electrode serves as a touch driving electrode to form a touch circuit with the touch sensing electrode, and a touch driving signal is input, so that touch and display of the touch display panel are synchronously performed. Through the embedded touch control design, the penetration rate and the screen resolution of the touch control display panel are improved, and through the multiplexing of the common electrode and the touch control driving electrode, the touch control electrode material is saved, and the cost is saved.
The touch display panel provided by the invention is described in detail below with reference to specific embodiments and accompanying drawings.
In an embodiment, as shown in fig. 1, fig. 1 is a first structural diagram of a touch display panel provided in an embodiment of the present invention, where the touch display panel includes:
a first substrate 110, a second substrate 120 disposed opposite to the first substrate 110, and a liquid crystal layer 130 filled between the first substrate 110 and the second substrate 120. In one embodiment, the first substrate 110 is an array substrate, and the second substrate 120 is a color filter substrate; the Array substrate may be of a COA (Color-filter on Array, where the Color grouping layer is disposed on the Array substrate) structure, or may be of a non-COA structure, which is not limited.
The touch sensing electrode layer 140 is disposed on the second substrate 120.
The touch protection layer 150 is disposed on the touch sensing electrode layer 140. The touch protection layer 150 is mainly used for protecting the touch sensing electrode layer 140, and the touch protection layer 150 is made of an insulating material, so that the touch sensing electrode layer 140 is protected on one hand, and the touch sensing electrode layer 140 is insulated from other film layers on the other hand. The insulating material includes an inorganic material, including but not limited to silicon oxide, silicon nitride, or silicon oxynitride, an organic material, or other suitable materials; the organic material includes, but is not limited to, polyimide-based resin, epoxy-based resin, acryl-based resin, or tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer.
The polarizer 160 is disposed on the touch protection layer 150.
The cover plate 170 is disposed on the polarizer 160.
The second substrate 120 is provided with a common electrode 121 on a side thereof adjacent to the first substrate 110, and the common electrode 121 extends in a first direction. The common electrode is made of a transparent conductive material, and includes Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), Aluminum Tin Oxide (ATO), Aluminum Zinc Oxide (AZO), Indium Gallium Zinc Oxide (IGZO), and a metal or alloy less than 60 angstroms.
The touch sensing electrode layer 140 is patterned to form a touch sensing electrode 140 extending along a second direction, which is perpendicular to the first direction. Similarly, the touch sensing electrode is made of a transparent conductive material, which includes Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), Aluminum Tin Oxide (ATO), Aluminum Zinc Oxide (AZO), Indium Gallium Zinc Oxide (IGZO), and a metal or alloy less than 60 angstroms.
In another embodiment, as shown in fig. 2, fig. 2 is a second structural diagram of a touch display panel provided in an embodiment of the present invention, where the touch display panel includes:
a first substrate 110, a second substrate 120 disposed opposite to the first substrate 110, and a liquid crystal layer 130 filled between the first substrate 110 and the second substrate 120. In one embodiment, the first substrate 110 is an array substrate, and the second substrate 120 is a color filter substrate; the Array substrate may be of a COA (Color-filter on Array, where the Color grouping layer is disposed on the Array substrate) structure, or may be of a non-COA structure, which is not limited.
The polarizer 160 is disposed on the second substrate 120.
The touch sensing electrode layer 140 is disposed on the polarizer 160.
The touch protection layer 150 is disposed on the touch sensing electrode layer 140. The touch protection layer 150 is mainly used for protecting the touch sensing electrode layer 140, and the touch protection layer 150 is made of an insulating material, so that the touch sensing electrode layer 140 is protected on one hand, and the touch sensing electrode layer 140 is insulated from other film layers on the other hand.
The cover plate 170 is disposed on the touch protection layer 150.
The second substrate 120 is provided with a common electrode 121 on a side thereof adjacent to the first substrate 110, and the common electrode 121 extends in a first direction. The touch sensing electrode layer 140 is patterned to form a touch sensing electrode 140 extending along a second direction, which is perpendicular to the first direction.
The structures of the touch driving electrodes 121 and the touch sensing electrodes 140 are described below with reference to fig. 3 and 4.
In one embodiment, as shown in fig. 3, the touch driving electrodes 121 and the touch sensing electrodes 140 are strip electrodes. The touch driving electrodes 121 arranged at intervals extend along a first direction, the touch sensing electrodes 140 arranged at intervals extend along a second direction, and the first direction and the second direction are perpendicular to each other. The first direction may be a horizontal direction and the second direction may be a vertical direction, or the first direction may be a vertical direction and the second direction may be a horizontal direction.
In another embodiment, as shown in fig. 4, the touch driving electrodes 121 and the touch sensing electrodes 140 are diamond-shaped electrodes. Each touch driving electrode 121 comprises a plurality of rhombic sheets which are regularly connected in series at fixed intervals in a first direction, and the plurality of touch driving electrodes 121 are arranged at equal intervals in a second direction; each touch sensing electrode 140 includes a plurality of diamond-shaped pieces connected in series at regular intervals in the second direction, and the plurality of touch sensing electrodes 140 are arranged at equal intervals in the first direction. The first direction and the second direction are perpendicular to each other, and may be the horizontal direction and the vertical direction, or the vertical direction and the horizontal direction.
The touch driving electrodes 121 extending along the first direction and the touch sensing electrodes 140 extending along the second direction intersect in space, and each touch driving electrode 121 and each touch sensing electrode 140 form a capacitor at the intersection, that is, the touch driving electrodes 121 and the touch sensing electrodes 140 respectively form two poles of the capacitor. When a finger touches the touch display panel, the coupling between the touch driving electrode 121 and the touch sensing electrode 140 located near the touch point is affected, so that the capacitance between the two electrodes changes. When the touch display panel performs a touch operation, the touch driving electrode 121 receives a touch driving signal, and the touch sensing electrode 140 receives a touch sensing signal, so as to obtain a capacitance value of the touch driving electrode 121 and the touch sensing electrode 140 at an intersection position, that is, a capacitance value of a two-dimensional plane of the entire touch display panel. According to the two-dimensional capacitance variation data of the touch display panel, the coordinates of each touch point can be calculated, and then the subsequent touch operation is completed.
When the touch display panel performs display operation, the common electrode inputs a common electric signal to drive the touch display panel to display; when the touch display panel performs touch operation, the common electrode serves as a touch driving electrode to form a touch circuit with the touch sensing electrode, and a touch driving signal is input to drive the touch display panel to perform touch operation, so that touch and display of the touch display panel are performed synchronously. The display operation of the touch display panel is realized by inputting display signals to the pixel electrode and the common electrode by the display driving chip; the touch operation of the touch display panel is realized by inputting a touch signal to the touch driving electrode and the touch sensing electrode by the touch driving chip.
In one embodiment, the touch driving electrodes 121 are connected to the display driving chip and the touch driving chip at the same time, and the touch sensing electrodes 140 are connected to the touch driving chip.
When the touch display panel performs a display operation, the display driving chip inputs a common electrical signal to the common electrode 121 to drive the touch display panel to perform the display operation; meanwhile, the touch driving chip stops inputting the touch driving signal to the common electrode 121, and stops the touch operation of the touch display panel.
When the touch display panel performs a touch operation, the touch driving chip inputs a touch driving signal to the touch driving electrode 121, and the touch driving chip inputs a touch sensing signal to the touch sensing electrode 140 to drive the touch operation of the touch display panel; meanwhile, the display driving chip stops inputting the common electrical signal to the common electrode 121, and stops the display operation of the touch display panel.
In another embodiment, the touch driving electrodes 121 are connected to the display touch integrated driving chip, and the touch sensing electrodes 140 are connected to the display touch integrated driving chip.
When the touch display panel performs display operation, the display touch integrated driving chip inputs a common electrical signal to the common electrode 121 to drive the touch display panel to perform display operation; meanwhile, the display touch integrated driving chip stops inputting the touch driving signal to the common electrode 121, and stops the touch operation of the touch display panel.
When the touch display panel performs a touch operation, the display touch integrated driving chip inputs a touch driving signal to the touch driving electrode 121, and the display touch integrated driving chip inputs a touch sensing signal to the touch sensing electrode 140 to drive the touch operation of the touch display panel; meanwhile, the display touch integrated driving chip stops inputting the common electrical signal to the common electrode 121, and stops the display operation of the touch display panel.
According to the above embodiments:
the embodiment of the invention provides a touch display panel and a display device, wherein the touch display panel comprises: a first substrate; the second substrate is arranged opposite to the first substrate and comprises a common electrode close to the first substrate side, and the common electrode extends along the first direction; the liquid crystal layer is filled between the first substrate and the second substrate; the touch sensing electrode layer is arranged on one side of the second substrate, which is far away from the first substrate, and comprises touch sensing electrodes extending along a second direction, and the second direction is vertical to the first direction; the touch control protective layer is arranged on one side, far away from the second substrate, of the touch control sensing electrode layer; when the touch display panel performs a touch operation, the common electrode serves as a touch driving electrode. The touch control display panel is additionally provided with touch control sensing electrodes, the common electrode layer is patterned into common electrodes perpendicular to the touch control sensing electrodes, and when the touch control display panel performs display operation, common electric signals are input into the common electrodes through a time division multiplexing driving means to drive the touch control display panel to display; when the touch display panel performs touch operation, the common electrode serves as a touch driving electrode to form a touch circuit with the touch sensing electrode, and a touch driving signal is input, so that touch and display of the touch display panel are synchronously performed. Through the embedded touch control design, the penetration rate and the screen resolution of the touch control display panel are improved, and through the multiplexing of the common electrode and the touch control driving electrode, the touch control electrode material is saved, and the cost is saved.
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 display panel, comprising:
a first substrate;
a second substrate disposed opposite to the first substrate, the second substrate including a common electrode adjacent to the first substrate side, the common electrode extending in a first direction;
the liquid crystal layer is filled between the first substrate and the second substrate;
the touch sensing electrode layer is arranged on one side, far away from the first substrate, of the second substrate and comprises touch sensing electrodes extending along a second direction, and the second direction is perpendicular to the first direction;
the touch control protective layer is arranged on one side, far away from the second substrate, of the touch control sensing electrode layer;
when the touch display panel performs touch operation, the common electrode is used as a touch driving electrode.
2. The touch display panel of claim 1, further comprising a polarizer disposed on a side of the touch protection layer away from the touch sensing electrode layer, and a cover plate disposed on a side of the polarizer away from the touch protection layer.
3. The touch display panel of claim 1, further comprising a polarizer disposed between the second substrate and the touch sensing electrode layer, and a cover disposed on a side of the touch protection layer away from the touch sensing electrode layer.
4. The touch display panel according to claim 1, wherein the touch driving electrodes and the touch sensing electrodes are strip electrodes.
5. The touch display panel according to claim 1, wherein the touch driving electrodes and the touch sensing electrodes are diamond-shaped electrodes.
6. The touch display panel of claim 1, wherein the common electrode is connected to the display driver chip and the touch driver chip simultaneously.
7. The touch display panel of claim 1, wherein the common electrode is connected to a display touch integrated driver chip.
8. A display device, comprising a backlight and a touch display panel, wherein the touch display panel comprises:
a first substrate;
a second substrate disposed opposite to the first substrate, the second substrate including a common electrode adjacent to the first substrate side, the common electrode extending in a first direction;
the liquid crystal layer is filled between the first substrate and the second substrate;
the touch sensing electrode layer is arranged on one side, far away from the first substrate, of the second substrate and comprises touch sensing electrodes extending along a second direction, and the second direction is perpendicular to the first direction;
the touch control protective layer is arranged on one side, far away from the second substrate, of the touch control sensing electrode layer;
when the touch display panel performs touch operation, the common electrode is used as a touch driving electrode.
9. The display device according to claim 8, wherein the touch display panel further comprises a polarizer disposed on a side of the touch protection layer away from the touch sensing electrode layer, and a cover plate disposed on a side of the polarizer away from the touch protection layer.
10. The display device according to claim 8, wherein the touch display panel further comprises a polarizer and a cover plate, the polarizer is disposed between the second substrate and the touch sensing electrode layer, and the cover plate is disposed on a side of the touch protection layer away from the touch sensing electrode layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377820.8A CN111596792A (en) | 2020-05-07 | 2020-05-07 | Touch display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377820.8A CN111596792A (en) | 2020-05-07 | 2020-05-07 | Touch display panel and display device |
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| Publication Number | Publication Date |
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| CN111596792A true CN111596792A (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010377820.8A Pending CN111596792A (en) | 2020-05-07 | 2020-05-07 | Touch display panel and display device |
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| US20100066650A1 (en) * | 2008-09-12 | 2010-03-18 | Deuk Su Lee | Liquid crystal display device including touch panel |
| CN101852935A (en) * | 2010-06-02 | 2010-10-06 | 北京富纳特创新科技有限公司 | Touch liquid crystal display |
| CN103995613A (en) * | 2014-05-19 | 2014-08-20 | 京东方科技集团股份有限公司 | Touch display panel, manufacturing method of touch display panel and touch display device |
| CN204256709U (en) * | 2014-12-22 | 2015-04-08 | 上海天马微电子有限公司 | A kind of touch-control display panel and touch control display apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100066650A1 (en) * | 2008-09-12 | 2010-03-18 | Deuk Su Lee | Liquid crystal display device including touch panel |
| CN101852935A (en) * | 2010-06-02 | 2010-10-06 | 北京富纳特创新科技有限公司 | Touch liquid crystal display |
| CN103995613A (en) * | 2014-05-19 | 2014-08-20 | 京东方科技集团股份有限公司 | Touch display panel, manufacturing method of touch display panel and touch display device |
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Application publication date: 20200828 |