CN105045433A - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
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- CN105045433A CN105045433A CN201510549008.8A CN201510549008A CN105045433A CN 105045433 A CN105045433 A CN 105045433A CN 201510549008 A CN201510549008 A CN 201510549008A CN 105045433 A CN105045433 A CN 105045433A
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- 239000000758 substrate Substances 0.000 claims abstract description 60
- 230000006698 induction Effects 0.000 claims abstract description 17
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 17
- 239000007769 metal material Substances 0.000 claims abstract description 16
- 239000011159 matrix material Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000007772 electrode material Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 39
- 239000010408 film Substances 0.000 description 28
- 238000000034 method Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000002161 passivation Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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Abstract
The invention discloses a touch display panel and a display device. The touch display panel comprises a colored film substrate, an array substrate and a liquid crystal layer positioned between the colored film substrate and the array substrate; the colored film substrate is provided with a plurality of touch driving electrodes arranged along a first direction, and a plurality of touch induction electrodes arranged along a second direction vertical to the first direction; each touch driving electrode comprises a plurality of touch driving sub-electrodes formed by metal materials, and each touch induction electrode comprises a plurality of touch induction sub-electrodes formed by the metal materials, wherein the touch driving sub-electrodes and the touch induction sub-electrodes are mutually independent; the plurality of touch driving sub-electrodes are connected in parallel through first terminal blocks; and the plurality of touch induction sub-electrodes are connected in parallel through second terminal blocks. Only a two-time composition technology needs to be added on the colored film substrate to form the touch driving electrodes and the touch induction electrodes, so that the touch display panel has the advantages of being simple in technology and easy in implementation. In addition, since the electrode materials are the metal materials, the resistance of an electrode can be effectively lowered, and the electrode is suitable for applying to a middle and large size touch display panels.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a touch display panel and a display device.
Background
At present, with the development of display technology, display technology is widely applied to televisions, mobile phones and public information display, medium and large size display panels gradually become a relatively important part of people's lives, and with the rapid development of display technology, touch screens (touchscreens) have gradually spread throughout people's lives, and today with the pursuit of excellent experience, touch performance is always a big defect of medium and large size display panels, or is limited by technology or cost.
Currently, there are three main types of embedded touch panels: the resistive touch panel, the capacitive touch panel and the optical touch panel are applied to a small-sized display screen, and the excellent touch performance becomes the direction of future touch design, so that the direction of effort is provided for realizing the excellent touch performance of the medium-sized display panel. In a small-sized touch display panel, a common electrode layer formed of an Indium Tin Oxide (ITO) material is generally divided into a touch driving electrode and a touch sensing electrode on an array substrate, and the touch driving electrode and the touch sensing electrode on the array substrate are electrically connected to corresponding metal traces through via holes, so that when liquid crystals deflect, noise is easily caused, and low-voltage driving is generally adopted to reduce the influence on display, so that the overall signal-to-noise ratio is low. If the scheme is applied to a medium-large-size touch display panel, due to the fact that the ITO resistance is large, and due to the fact that low-voltage driving is adopted, the signal-to-noise ratio is low, the touch function is affected, and if the driving voltage is increased, the display function is affected, therefore, the scheme is not suitable for being applied to a medium-large-size touch display screen.
Therefore, how to achieve the excellent touch performance of the medium-sized and large-sized touch display screen is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, embodiments of the present invention provide a touch display panel and a display device, which can form a touch driving electrode and a touch sensing electrode on a color film substrate, have a simple process, are easy to implement, and are suitable for being applied to a medium-sized or large-sized touch display screen.
Therefore, an embodiment of the present invention provides a touch display panel, including: the liquid crystal display panel comprises a color film substrate, an array substrate and a liquid crystal layer positioned between the color film substrate and the array substrate;
the color film substrate is provided with at least one touch driving electrode arranged along a first direction and at least one touch induction electrode arranged along a second direction perpendicular to the first direction; wherein,
each touch drive electrode comprises a plurality of mutually independent touch drive sub-electrodes formed by metal materials; the touch driving sub-electrodes of each touch driving electrode are connected in parallel through first connecting terminals;
each touch sensing electrode comprises a plurality of mutually independent touch sensing sub-electrodes formed by metal materials; the touch sensor sub-electrodes of each touch sensor electrode are connected in parallel through a second connecting terminal.
In a possible implementation manner, in the touch display panel provided in the embodiment of the present invention, the touch driving sub-electrodes of each touch driving electrode are disposed in parallel with each other and are parallel to the first direction;
the touch sensor sub-electrodes of each touch sensing electrode are arranged in parallel and are parallel to the second direction.
In a possible implementation manner, in the touch display panel provided in the embodiment of the present invention, a black matrix is disposed between the touch driving electrode and the touch sensing electrode;
and the touch driving sub-electrode and the touch sensing sub-electrode are both positioned in the area corresponding to the black matrix.
In a possible implementation manner, in the touch display panel provided in the embodiment of the present invention, at least a portion of the first connection terminal and the second connection terminal covers above the black matrix.
In a possible implementation manner, in the touch display panel provided in the embodiment of the present invention, a color film layer is disposed above the touch driving electrode and the touch sensing electrode.
In a possible implementation manner, in the touch display panel provided in the embodiment of the present invention, the peripheral area of the array substrate has at least one touch driving line and at least one touch sensing line;
each touch drive line is connected with a corresponding third wiring terminal; each touch induction line is connected with a corresponding fourth wiring terminal;
the color film substrate is connected with the array substrate through a plurality of contact type conductive balls;
the first connecting terminal is electrically connected with the third connecting terminal through part of the contact type conductive balls; the second connecting terminal is electrically connected with the fourth connecting terminal through the rest of the contact type conductive balls.
In a possible implementation manner, in the touch display panel provided in the embodiment of the present invention, a portion of the touch driving lines and a portion of the touch sensing lines are disposed in the same layer as the gate, and the rest of the touch driving lines and the rest of the touch sensing lines are disposed in the same layer as the source and drain.
In a possible implementation manner, in the touch display panel provided in the embodiment of the present invention, the touch driving line and the gate are disposed in the same layer, and the touch sensing line and the source/drain are disposed in the same layer; or,
the touch sensing lines and the grid electrodes are arranged on the same layer, and the touch driving lines and the source and drain electrodes are arranged on the same layer.
In a possible implementation manner, in the touch display panel provided in the embodiment of the present invention, a common electrode is disposed above the touch driving line or the touch sensing line.
In a possible implementation manner, in the touch display panel provided in the embodiment of the present invention, an anti-static protection device is disposed between the touch driving line and the third connection terminal; and/or the presence of a gas in the gas,
an anti-static protection device is arranged between the touch induction line and the fourth wiring terminal.
The embodiment of the invention also provides a display device which comprises the touch display panel provided by the embodiment of the invention.
The embodiment of the invention has the beneficial effects that:
the embodiment of the invention provides a touch display panel and a display device, comprising: the liquid crystal display panel comprises a color film substrate, an array substrate and a liquid crystal layer positioned between the color film substrate and the array substrate; the color film substrate is provided with at least one touch driving electrode arranged along a first direction and at least one touch induction electrode arranged along a second direction perpendicular to the first direction; each touch drive electrode comprises a plurality of mutually independent touch drive sub-electrodes formed by metal materials; the multiple touch driving sub-electrodes of each touch driving electrode are connected in parallel through a first connecting terminal; each touch sensing electrode comprises a plurality of mutually independent touch sensing sub-electrodes formed by metal materials; the multiple touch-control inductor electrodes of each touch-control induction electrode are connected in parallel through the second connecting terminal. According to the touch display panel provided by the embodiment of the invention, the touch driving electrode and the touch sensing electrode are formed by adding the picture composition process on the color film substrate for two times, so that the process is simple and easy to realize; in addition, because the touch driving sub-electrode and the touch sensor sub-electrode are made of metal materials, the resistance can be effectively reduced, and the touch driving sub-electrode and the touch sensor sub-electrode are suitable for being applied to medium-size and large-size display panels; in addition, when a finger touches the display panel, the distance between the touch sensing electrode and the finger is very close, the sensitivity is high, and the sensing signal is strong.
Drawings
Fig. 1 is a schematic top view of a touch display panel according to an embodiment of the invention;
fig. 2a is a schematic top view of a color film substrate according to an embodiment of the present invention;
FIG. 2b is a schematic cross-sectional view taken along a-a' of FIG. 2 a;
FIG. 2c is a schematic cross-sectional view taken along the line b-b' in FIG. 2 a;
fig. 3 is a schematic top view of an array substrate according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention;
fig. 5a and 5b are schematic structural diagrams of an array substrate according to an embodiment of the present invention.
Detailed Description
The following describes in detail specific embodiments of a touch display panel and a display device according to embodiments of the present invention with reference to the accompanying drawings.
In the drawings, the thickness and the shape of each film layer do not reflect the real proportion of the touch display panel, and the purpose is only to schematically illustrate the content of the invention.
An embodiment of the present invention provides a touch display panel, including: the liquid crystal display panel comprises a color film substrate, an array substrate and a liquid crystal layer positioned between the color film substrate and the array substrate;
as shown in fig. 1, the color filter substrate 1 has at least one touch driving electrode 11 disposed along a first direction, and at least one touch sensing electrode 12 disposed along a second direction perpendicular to the first direction (in the following embodiments, the first direction is a transverse direction, and the second direction is a longitudinal direction, it should be noted that positions of the touch driving electrode and the touch sensing electrode may be interchanged, and the positions are not limited herein); wherein,
each touch driving electrode 11 comprises a plurality of mutually independent touch driving sub-electrodes 111 formed by metal materials; the touch driving sub-electrodes 111 of each touch driving electrode 11 are connected in parallel through the first connection terminal 112;
each touch sensing electrode 12 includes a plurality of touch sensing sub-electrodes 121 formed of a metal material and independent from each other; the touch sensor sub-electrodes 121 of each touch sensing electrode 12 are connected in parallel via the second connection terminal 122.
In the touch display panel provided by the embodiment of the invention, the touch driving electrode and the touch sensing electrode are formed by adding the picture composition process on the color film substrate for two times, so that the process is simple and easy to realize; in addition, the touch driving sub-electrode and the touch sensor sub-electrode are made of metal materials and are connected in parallel through the wiring terminal, so that the resistance can be effectively reduced; in addition, when a finger touches the display panel, the distance between the touch sensing electrode and the finger is very close, the sensitivity is high, and the sensing signal is strong.
In a specific implementation, in the touch display panel provided in the embodiment of the invention, as shown in fig. 1, the touch driving sub-electrodes 111 of each touch driving electrode 11 are disposed in parallel, and the touch driving sub-electrodes 111 may be all parallel to the first direction; the touch sensor sub-electrodes 121 of each touch sensing electrode 12 are disposed in parallel, and the touch sensor sub-electrodes 121 may be all parallel to the second direction.
In practical implementation, in the touch display panel provided in the embodiment of the present invention, in order to prevent the touch driving electrode and the touch sensing electrode from being short-circuited, specifically, as shown in fig. 2a, a black matrix 13 may be disposed between the touch driving electrode 11 and the touch sensing electrode 12; the touch driving sub-electrode 111 and the touch sensing sub-electrode 121 can be located in an area corresponding to the black matrix 13, so that the aperture ratio of the touch display panel can be ensured.
Further, in the touch display panel provided in the embodiment of the invention, as shown in fig. 2a, at least a portion of the first connection terminal 112 and the second connection terminal 122 covers the black matrix 13. For example, as shown in fig. 2c, one portion of the first connection terminal 112 covers the black matrix 13, and the other portion is directly and electrically connected to the touch driving sub-electrode 111 below the first connection terminal, so that the function of shielding light can be performed, the aperture ratio of the touch display panel can be ensured, the metal can be prevented from being exposed outside the black matrix too much, the metal visibility at the edge of the color film substrate can be reduced, and a narrow frame can be realized. Specifically, as shown in fig. 2a, the first connection terminal 112, the second connection terminal 122 and the touch sensor electrode 121 may be made of the same material in the same layer, that is, in the manufacturing process, the patterns of the first connection terminal, the second connection terminal and the touch sensor electrode may be formed through the same composition process, so that the manufacturing process is simple and the cost is saved.
In the touch display panel provided in the embodiment of the invention, in order to prevent the touch driving electrodes and the touch sensing electrodes from falling off, specifically, as shown in fig. 2a and fig. 2b, a color film layer 14 may be disposed above the touch driving electrodes 11 and the touch sensing electrodes 12. Fig. 2a and 2B only show the blue B filter and the red R filter in the color film layer disposed above the touch driving electrode 11 and the touch sensing electrode 12, and the color film layer may further include filters of different colors, which are not shown in the drawings, and the arrangement of the filters of different colors is not limited herein.
Specifically, in the touch display panel provided in the embodiment of the present invention, in order to prevent signal crosstalk, as shown in fig. 3, at least one touch driving line 21 and at least one touch sensing line 22 are disposed in a peripheral area (an area excluding the display area AA) of the array substrate 2, and each touch driving line 21 is connected to a corresponding third connection terminal 211; each touch sensing line 22 is connected to the corresponding fourth connection terminal 221. The widths of the touch driving lines and the touch sensing lines may be determined according to specific situations, and are not limited herein. As shown in fig. 4, the touch display panel includes: the liquid crystal display panel comprises a color film substrate 1, an array substrate 2 and a liquid crystal layer 3 positioned between the color film substrate 1 and the array substrate 2, wherein in order to realize the conduction of the color film substrate 1 and the array substrate 2, the color film substrate 1 and the array substrate 2 can be connected through a plurality of contact type conductive balls 4; at this time, the first connection terminal 112 may be electrically connected to the third connection terminal 211 through the partial contact type conductive ball 4; the second connection terminal can be electrically connected with the fourth connection terminal (not shown in fig. 4) through the rest of the contact conductive balls, and because the first connection terminal 112 and the second connection terminal (not shown in fig. 4) are both covered above the black matrix 13, the first connection terminal and the second connection terminal maintain the same horizontal plane, and the third connection terminal and the fourth connection terminal maintain the same horizontal plane, it can be ensured that the compression amount of each contact conductive ball is the same, the same conductivity is achieved, and further the yield is ensured, and it can be ensured that each touch driving electrode is electrically connected with the corresponding touch driving line, and each touch sensing electrode is electrically connected with the corresponding touch sensing line, so that the touch display panel is less affected by liquid crystal deflection, low in noise and high in signal-to-noise ratio, and is suitable for being applied to medium-sized touch display panels.
In a specific implementation, in the touch display panel provided in the embodiment of the present invention, in order to reduce the touch trace interval, implement a narrow frame, and improve the utilization rate of the display panel, as shown in fig. 5a and 5b, the distribution of the touch driving lines 21 and the touch sensing lines 22 in the present invention may adopt a dual-layer trace manner, and the following embodiments are listed:
specifically, in the first embodiment, as shown in fig. 5a, a portion of the touch driving lines 21 and a portion of the touch sensing lines 22 are disposed in the same layer as the gate, and the remaining portion of the touch driving lines 21 and the remaining portion of the touch sensing lines 22 are disposed in the same layer as the source and drain, in this case, the insulating layer 5 is disposed between the gate and the source and drain, and the passivation layer 6 is disposed above the source and drain.
Specifically, in the second embodiment, as shown in fig. 5b, all the touch driving lines 21 and the gate electrodes are disposed in the same layer, and all the touch sensing lines 22 and the source and drain electrodes are disposed in the same layer, in this case, the insulating layer 5 is disposed between the gate electrodes and the source and drain electrodes, and the passivation layer 6 is disposed above the source and drain electrodes.
Specifically, in the third embodiment, as shown in fig. 5b, all the touch sensing lines 22 and the gate electrode are disposed in the same layer, and all the touch driving lines 21 and the source and drain electrodes are disposed in the same layer, in this case, the insulating layer 5 is disposed between the gate electrode and the source and drain electrodes, and the passivation layer 6 is disposed above the source and drain electrodes.
The three specific implementation modes are all double-layer routing, so that the routing interval can be reduced, a narrow frame is realized, and which implementation mode is specifically selected is determined according to specific conditions and is not limited herein.
Further, in a specific implementation, the touch display panel provided in the embodiment of the present invention may be applied to an ultra advanced super dimension switching (HADS) type liquid crystal panel, specifically, the pixel electrode in the array substrate is located as a plate electrode at a lower layer (closer to the substrate), the common electrode is located as a slit electrode at an upper layer (closer to the liquid crystal layer), that is, the pixel electrode is located below the common electrode, and an insulating layer is disposed between the pixel electrode and the common electrode; at this time, as shown in fig. 5b, the common electrode 7 may be disposed above the touch driving line 21 or the touch sensing line 22, so that the common electrode 7 may shield the touch driving line 21 or the touch sensing line 22, and further, the isolation trace may be omitted, thereby implementing a narrow bezel.
In a specific implementation, in the touch display panel provided in the embodiment of the present invention, in order to have better anti-static capability, an anti-static protection device may be disposed between the touch driving line and the third connection terminal; and/or an anti-static protection device can be arranged between the touch induction line and the fourth wiring terminal.
In specific implementation, the array substrate in the touch display panel provided in the embodiment of the present invention may also generally have other film layer structures such as a pixel electrode layer, a semiconductor layer, and a planarization layer, and further generally has structures such as a thin film transistor, a gate line, a data line, and a common electrode line formed on the substrate, and these specific structures may have various implementation manners, which is not limited herein.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, including the touch display panel provided in the embodiment of the present invention, where the display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the invention. The implementation of the display device can be seen in the above embodiments of the touch display panel, and repeated descriptions are omitted.
The embodiment of the invention provides a touch display panel and a display device, comprising: the liquid crystal display panel comprises a color film substrate, an array substrate and a liquid crystal layer positioned between the color film substrate and the array substrate; the color film substrate is provided with at least one touch driving electrode arranged along a first direction and at least one touch induction electrode arranged along a second direction perpendicular to the first direction; each touch drive electrode comprises a plurality of mutually independent touch drive sub-electrodes formed by metal materials; the multiple touch driving sub-electrodes of each touch driving electrode are connected in parallel through a first connecting terminal; each touch sensing electrode comprises a plurality of mutually independent touch sensing sub-electrodes formed by metal materials; the multiple touch-control inductor electrodes of each touch-control induction electrode are connected in parallel through the second connecting terminal. According to the touch display panel provided by the embodiment of the invention, the touch driving electrode and the touch sensing electrode are formed by adding the picture composition process on the color film substrate for two times, so that the process is simple and easy to realize; in addition, because the touch driving sub-electrode and the touch sensor sub-electrode are made of metal materials, the resistance can be effectively reduced, and the touch driving sub-electrode and the touch sensor sub-electrode are suitable for being applied to medium-size and large-size display panels; in addition, when a finger touches the display panel, the distance between the touch sensing electrode and the finger is very close, the sensitivity is high, and the sensing signal is strong.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (11)
1. A touch display panel, comprising: the liquid crystal display panel comprises a color film substrate, an array substrate and a liquid crystal layer positioned between the color film substrate and the array substrate; it is characterized in that the preparation method is characterized in that,
the color film substrate is provided with at least one touch driving electrode arranged along a first direction and at least one touch induction electrode arranged along a second direction perpendicular to the first direction; wherein,
each touch drive electrode comprises a plurality of mutually independent touch drive sub-electrodes formed by metal materials; the touch driving sub-electrodes of each touch driving electrode are connected in parallel through first connecting terminals;
each touch sensing electrode comprises a plurality of mutually independent touch sensing sub-electrodes formed by metal materials; the touch sensor sub-electrodes of each touch sensor electrode are connected in parallel through a second connecting terminal.
2. The touch display panel according to claim 1, wherein the touch driving sub-electrodes of each touch driving electrode are disposed parallel to each other and parallel to the first direction;
the touch sensor sub-electrodes of each touch sensing electrode are arranged in parallel and are parallel to the second direction.
3. The touch display panel according to claim 2, wherein a black matrix is disposed between the touch driving electrode and the touch sensing electrode;
and the touch driving sub-electrode and the touch sensing sub-electrode are both positioned in the area corresponding to the black matrix.
4. The touch display panel of claim 3, wherein at least a portion of the first connection terminal and the second connection terminal covers over the black matrix.
5. The touch display panel according to claim 2, wherein a color film layer is disposed above the touch driving electrodes and the touch sensing electrodes.
6. The touch display panel of claim 1, wherein the peripheral area of the array substrate has at least one touch driving line and at least one touch sensing line;
each touch drive line is connected with a corresponding third wiring terminal; each touch induction line is connected with a corresponding fourth wiring terminal;
the color film substrate is connected with the array substrate through a plurality of contact type conductive balls;
the first connecting terminal is electrically connected with the third connecting terminal through part of the contact type conductive balls; the second connecting terminal is electrically connected with the fourth connecting terminal through the rest of the contact type conductive balls.
7. The touch display panel according to claim 6, wherein a portion of the touch driving lines and a portion of the touch sensing lines are disposed on the same layer as the gate electrode, and the rest of the touch driving lines and the rest of the touch sensing lines are disposed on the same layer as the source/drain electrodes.
8. The touch display panel according to claim 6, wherein the touch driving lines are disposed on the same layer as the gate electrodes, and the touch sensing lines are disposed on the same layer as the source and drain electrodes; or,
the touch sensing lines and the grid electrodes are arranged on the same layer, and the touch driving lines and the source and drain electrodes are arranged on the same layer.
9. The touch display panel according to claim 7 or 8, wherein a common electrode is disposed above the touch driving line or the touch sensing line.
10. The touch display panel according to claim 6, wherein an anti-static protection device is disposed between the touch driving line and the third connection terminal; and/or the presence of a gas in the gas,
an anti-static protection device is arranged between the touch induction line and the fourth wiring terminal.
11. A display device comprising the touch display panel according to any one of claims 1 to 10.
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| CN201510549008.8A CN105045433B (en) | 2015-08-31 | 2015-08-31 | A kind of touch-control display panel and display device |
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| CN201510549008.8A CN105045433B (en) | 2015-08-31 | 2015-08-31 | A kind of touch-control display panel and display device |
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| CN109683740A (en) * | 2018-12-17 | 2019-04-26 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| US11460941B2 (en) | 2018-12-17 | 2022-10-04 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Touch display panel |
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| CN105045433B (en) | 2016-08-24 |
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