CN114003140B - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
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- CN114003140B CN114003140B CN202111222048.3A CN202111222048A CN114003140B CN 114003140 B CN114003140 B CN 114003140B CN 202111222048 A CN202111222048 A CN 202111222048A CN 114003140 B CN114003140 B CN 114003140B
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- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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- Engineering & Computer Science (AREA)
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- Theoretical Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention provides a touch display panel and a display device, wherein the touch display panel comprises at least two touch electrode groups and a multiplexer; each touch electrode group comprises a plurality of touch electrodes; the multiplexer at least comprises a first connection unit and a second connection unit; the first connection unit comprises a first connection line, a first switch control line and a first transmission line; the second connection unit comprises a second connection line and a second switch control line; the second end of the second switch control line is electrically connected with the first end of the first transmission line through at least one second transmission line; according to the invention, the second switch control line of the second connecting unit is electrically connected with the first transmission line of the first connecting unit through at least one second transmission line, namely, the second connecting unit and the first connecting unit share the first transmission line, so that the space of part of transmission lines can be saved, the size of the multiplexer is greatly reduced, and the compatibility of the multiplexer structure is improved.
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
With the rapid development of display technology, touch display panels have a wide application space in the fields of vehicles, mobile phones, tablets, computers, televisions and the like. Generally, touch control functions have become one of the standard of many display panels, wherein capacitive touch control display panels are widely used, and the basic principle is to generate capacitance between a tool such as a finger or a stylus and the touch control display panel, and to determine whether the touch control display panel is touched and determine touch coordinates by using an electrical signal formed by capacitance change before and after touch control.
One important touch technology of a capacitive touch display panel is self-capacitive touch, and the touch function can be realized through one or two layers of metal. The touch signal wire and the touch electrode are prepared by adopting different metal layers, so that the design without blind areas can be realized, and the touch performance is optimized. And because the number of touch electrodes is large, a Mux (multiplexer) structure is generally adopted to reduce the number of channels of the touch integrated circuit. The Mux structure in the prior art generally includes a plurality of connection units, each connection unit includes a connection line, a switch control line, and a transmission line, the connection line is electrically connected to the touch signal line, and the transmission line is electrically connected to the touch integrated circuit. The Mux structure occupies a large space and has the problem of incapability of being placed. Therefore, it is necessary to improve this defect.
Disclosure of Invention
The embodiment of the invention provides a touch display panel, which is used for solving the technical problems that a multi-path selector structure of the touch display panel in the prior art occupies a large space and cannot be placed.
The embodiment of the invention provides a touch display panel, which comprises at least two touch electrode groups and a multiplexer positioned at one side of the at least two touch electrode groups; the at least two touch electrode groups are arranged along a first direction, and each touch electrode group comprises a plurality of touch electrodes arranged along a second direction; wherein the multiplexer at least comprises a first connection unit and a second connection unit; the first connection unit comprises a first connection line, a first switch control line and a first transmission line; the first end of the first connecting wire is electrically connected with the touch electrode, the second end of the first connecting wire is electrically connected with the first end of the first switch control wire, the second end of the first switch control wire is electrically connected with the first end of the first transmission wire, and the second end of the first transmission wire is electrically connected with the touch integrated circuit; the second connection unit comprises a second connection line and a second switch control line; the first end of the second connecting wire is electrically connected with the touch electrode, and the second end of the second connecting wire is electrically connected with the first end of the second switch control wire; the second end of the second switch control line is electrically connected with the first end of the first transmission line through at least one second transmission line.
In the touch display panel provided by the embodiment of the invention, the first connection line, the first switch control line, the first transmission line, the second connection line and the second switch control line are arranged on the same layer, and the second transmission line is arranged on different layers from the first connection line, the first switch control line, the first transmission line, the second connection line and the second switch control line.
In the touch display panel provided by the embodiment of the invention, the first connection line, the first transmission line and the second connection line are arranged in parallel, and the second transmission line is perpendicular to different surfaces of the first connection line, the first transmission line and the second connection line.
In the touch display panel provided by the embodiment of the invention, the touch electrode, the first connection line, the first switch control line, the first transmission line, the second connection line and the second switch control line are arranged in the same layer.
In the touch display panel provided by the embodiment of the invention, the first transmission line comprises a first sub-line and a second sub-line, the first sub-line and the second sub-line are connected in parallel, the first sub-line is located in the first connection unit, and the second sub-line is located at one side of the second connection unit far away from the first connection unit.
In the touch display panel provided by the embodiment of the invention, the number of the first sub-lines is equal to the number of the first connection lines, and the number of the second sub-lines is equal to the number of the first sub-lines.
In the touch display panel provided by the embodiment of the invention, the number of the second transmission lines is equal to the number of the second connection lines, and the number of the second transmission lines is a positive integer multiple of the number of the first transmission lines.
In the touch display panel provided by the embodiment of the invention, in the light emitting side direction of the touch display panel, the orthographic projection of the first transmission line is overlapped with the orthographic projection of the first connection line or the second connection line.
In the touch display panel provided by the embodiment of the invention, the first connection line, the first switch control line, the first transmission line, the second connection line and the second switch control line are all arranged along the first direction.
The embodiment of the invention also provides a display device which comprises the touch display panel and a touch integrated circuit electrically connected with the touch display panel.
The beneficial effects are that: the touch display panel provided by the embodiment of the invention comprises at least two touch electrode groups and a multiplexer positioned at one side of the at least two touch electrode groups; at least two touch electrode groups are arranged along a first direction, and each touch electrode group comprises a plurality of touch electrodes arranged along a second direction; wherein the multiplexer at least comprises a first connection unit and a second connection unit; the first connection unit comprises a first connection line, a first switch control line and a first transmission line; the first end of the first connecting wire is electrically connected with the touch electrode, the second end of the first connecting wire is electrically connected with the first end of the first switch control wire, the second end of the first switch control wire is electrically connected with the first end of the first transmission wire, and the second end of the first transmission wire is electrically connected with the touch integrated circuit; the second connection unit comprises a second connection line and a second switch control line; the first end of the second connecting wire is electrically connected with the touch electrode, and the second end of the second connecting wire is electrically connected with the first end of the second switch control wire; the second end of the second switch control line is electrically connected with the first end of the first transmission line through at least one second transmission line; the invention can save the space of part of transmission lines and greatly reduce the size of the multiplexer by enabling the second switch control line of the second connection unit to be electrically connected with the first transmission line of the first connection unit through at least one second transmission line, namely by enabling the second connection unit and the first connection unit to share the first transmission line, thereby realizing the space optimization of the multiplexer structure and improving the compatibility of the multiplexer structure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic diagram of a basic structure of a touch display panel according to an embodiment of the present invention.
Fig. 2 is an enlarged view of B-B in fig. 1.
Fig. 3 is a schematic diagram of a basic structure of another touch display panel according to an embodiment of the invention.
Fig. 4 is a schematic diagram of a basic structure of another touch display panel according to an embodiment of the invention.
Fig. 5 is an enlarged view of C-C in fig. 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the size and thickness of the components depicted in the drawings are not to scale for clarity and ease of understanding and description.
As shown in fig. 1 and fig. 2, which are a basic structural schematic diagram of a touch display panel and an enlarged view of B-B in fig. 1 according to an embodiment of the present invention, the touch display panel includes at least two touch electrode sets 10 and a multiplexer 104 located at one side of the at least two touch electrode sets 10; the at least two touch electrode sets 10 are arranged along a first direction, and each touch electrode set 10 includes a plurality of touch electrodes 101 arranged along a second direction.
As shown in fig. 2, the multiplexer 104 includes at least a first connection unit 20 and a second connection unit 30; the first connection unit 20 includes a first connection line 201, a first switch control line 202, and a first transmission line 203; the first end of the first connection line 201 is electrically connected to the touch electrode 101, the second end of the first connection line 201 is electrically connected to the first end of the first switch control line 202, the second end of the first switch control line 202 is electrically connected to the first end of the first transmission line 203, and the second end of the first transmission line 203 is electrically connected to the touch integrated circuit 105; the second connection unit 30 includes a second connection line 301 and a second switch control line 302; the first end of the second connection line 301 is electrically connected to the touch electrode 101, and the second end of the second connection line 301 is electrically connected to the first end of the second switch control line 302; the second end of the second switch control line 302 is electrically connected to the first end of the first transmission line 203 through at least one second transmission line 303.
It can be appreciated that in the embodiment of the present invention, the second switch control line 302 of the second connection unit 30 is electrically connected to the first transmission line 203 of the first connection unit 20 through at least one second transmission line 303, that is, the second connection unit 30 and the first connection unit 20 share the first transmission line 203, so that the space of part of the transmission lines can be saved, the size of the multiplexer 104 can be greatly reduced, the space optimization of the multiplexer structure can be realized, and the compatibility of the multiplexer structure can be improved.
Specifically, the enabling ends of the first switch control line 202 and the second switch control line 302 are electrically connected to the touch integrated circuit 105, and the touch integrated circuit 105 opens the first switch control line 202 and the second switch control line 302 by time sharing, so that the first transmission line 203 is respectively conducted with the first connection line 201 and the second connection line 301, so as to realize that the first transmission line 203 is respectively used for transmitting electric signals to the first connection line 201 and the second connection line 301, that is, the second connection unit 30 and the first connection unit 20 share the first transmission line 203.
It should be noted that the multiplexer 104 includes at least one first connection unit 20 and one second connection unit 30. Only one first connection unit 20 and one second connection unit 30 are shown in fig. 2, and in fact, the multiplexer 104 far more than includes two connection units. The number of the connection units is determined according to the number of the touch electrode sets 10. However, the multiplexer 104 includes at least one second connection unit 30, so that at least one transmission line can be saved, which can have the technical effect of reducing the size of the multiplexer 104.
In one embodiment, the first connection line 201, the first switch control line 202, the first transmission line 203, the second connection line 301, and the second switch control line 302 are disposed in the same layer, and the second transmission line 303 is disposed in a different layer from the first connection line 201, the first switch control line 202, the first transmission line 203, the second connection line 301, and the second switch control line 302. Specifically, the second transmission line 303 may be electrically connected to the second switch control line 302 and the first transmission line 203 through connection holes (not shown).
In one embodiment, the first connection line 201, the first transmission line 203, and the second connection line 301 are disposed in parallel, and the second transmission line 303 is perpendicular to the first connection line 201, the first transmission line 203, and the second connection line 301. It can be appreciated that the second transmission line 303 in this embodiment is disposed in a vertical cross line manner, so as to reduce interference between the signal lines.
In one embodiment, the touch electrode 101 (as shown in fig. 1) is disposed in the same layer as the first connection line 201, the first switch control line 202, the first transmission line 203, the second connection line 301, and the second switch control line 302.
In one embodiment, the number of the second transmission lines 303 is equal to the number of the second connection lines 301, and the number of the second transmission lines 303 is a positive integer multiple of the number of the first transmission lines 203. It can be understood that the second transmission lines 303 are in one-to-one correspondence with the second connection lines 301 to transmit electric signals, so that the number is equal; the number of the first transmission lines 203 corresponds to the number of the first connection units 20, the number of the second transmission lines 303 corresponds to the number of the second connection units 30, and the size of the multiplexer 104 can be further reduced by making the number of the second transmission lines 303 positive integer multiples of the number of the first transmission lines 203, i.e. making the number of the second connection units 30 larger than the number of the first connection units 20, so that the first transmission lines 203 can be shared by more second connection units 30.
In one embodiment, in the light emitting side direction of the touch display panel, the front projection of the first transmission line 203 coincides with the front projection of the first connection line 201 or the second connection line 301. Specifically, in the present embodiment, the first transmission line 203 is disposed in different layers from the first connection line 201 and the second connection line 301, and the first transmission line 203 is partially overlapped or completely overlapped with the first connection line 201 or the second connection line 301 in the top view direction of the touch display panel, so that the size of the multiplexer 104 can be further reduced. In one embodiment, the first transmission line 203 is disposed in the same layer as the second transmission line 303.
In one embodiment, the first connection line 201, the first switch control line 202, the first transmission line 203, the second connection line 301, and the second switch control line 302 are all arranged along the first direction. In other embodiments, the first connection line 201, the first switch control line 202, the first transmission line 203, the second connection line 301, and the second switch control line 302 may be arranged along the second direction.
With continued reference to fig. 1, the touch display panel provided by the embodiment of the invention is used for realizing the touch function of the touch input device including the finger. The touch display panel further includes a touch signal line 102, where the touch signal line 102 is used for transmitting a touch driving signal or a touch sensing signal, and the touch signal line 102 is electrically connected to the touch electrode 101 through a via 103.
The touch display panel comprises a display area A1 and a binding area A2 positioned at one side of the display area A1. The touch electrode 101 and the touch signal line 102 are located in the display area A1, and the multiplexer 104 and the touch integrated circuit 105 are located in the binding area A2.
In one embodiment, the touch display panel further includes a display integrated circuit 106, and the display integrated circuit 106 is configured to provide a display driving signal, and since the display function is not an important point of the present invention, a detailed description will not be given here.
It should be noted that, the touch display panel includes M touch electrode groups 10, where M is a positive integer greater than 1, each touch electrode group 10 includes N touch electrodes 101, and N is a positive integer. In fig. 1, the touch display panel includes 4 touch electrode sets 10 as an example, wherein each touch electrode set 10 includes 5 touch electrodes 101, and other embodiments are not described herein.
In one embodiment, the number of touch signal lines 102 is equal to the number of touch electrodes 101. It can be understood that the touch signal lines 102 are used for electrically connecting the plurality of touch electrodes 101 with the multiplexer 104, and one touch signal line 102 corresponds to one touch electrode 101, so that the number of touch signal lines 102 is equal to the number of touch electrodes 101.
It should be noted that, the touch signal line 102 and the touch electrode 101 may be disposed in different layers (as shown in fig. 1, and electrically connected by the via 103) or may be disposed in the same layer, as shown in fig. 3, which is a basic structural schematic diagram of another touch display panel provided in the embodiment of the present invention, where the touch signal line 102 and the touch electrode 101 are disposed in the same layer, and other structures are the same as in fig. 1 and are not repeated herein.
Next, referring to fig. 4 and 5, a basic structural schematic diagram of another touch display panel and an enlarged view of C-C in fig. 4 according to an embodiment of the present invention are shown, where the touch display panel includes at least two touch electrode sets 10 and a multiplexer 104 located at one side of the at least two touch electrode sets 10; the at least two touch electrode sets 10 are arranged along a first direction, and each touch electrode set 10 includes a plurality of touch electrodes 101 arranged along a second direction; wherein the multiplexer 104 comprises at least a first connection unit 20 and a second connection unit 30; the first connection unit 20 includes a first connection line 201, a first switch control line 202, and a first transmission line 203; the first end of the first connection line 201 is electrically connected to the touch electrode 101, the second end of the first connection line 201 is electrically connected to the first end of the first switch control line 202, the second end of the first switch control line 202 is electrically connected to the first end of the first transmission line 203, and the second end of the first transmission line 203 is electrically connected to the touch integrated circuit 105; the second connection unit 30 includes a second connection line 301 and a second switch control line 302; the first end of the second connection line 301 is electrically connected to the touch electrode 101, and the second end of the second connection line 301 is electrically connected to the first end of the second switch control line 302; the second end of the second switch control line 302 is electrically connected to the first end of the first transmission line 203 through at least one second transmission line 303.
As shown in fig. 5, the first transmission line 203 includes a first sub-line 2031 and a second sub-line 2032, where the first sub-line 2031 and the second sub-line 2032 are connected in parallel, the first sub-line 2031 is located inside the first connection unit 20, and the second sub-line 2032 is located on a side of the second connection unit 30 away from the first connection unit 20.
It can be understood that, in this embodiment, by dividing the first transmission line 203 into the first sub-line 2031 and the second sub-line 2032, the first sub-line 2031 and the second sub-line 2032 are connected in parallel, that is, the first sub-line 2031 and the second sub-line 2032 transmit the same signal, which is equivalent to changing a single first transmission line into two first transmission lines in the embodiment of fig. 1, that is, increasing the cross-sectional area of the first transmission line 203, increasing S, which is equivalent to decreasing the impedance R according to the formula r=ρ×l/S. Therefore, the two-side design of the embodiment can realize two-end driving and sensing, which is equivalent to increasing the cross-sectional area of the first transmission line 203, and can reduce the impedance of the first transmission line 203, thereby being beneficial to improving the touch performance.
In one embodiment, the number of the first sub-lines 2031 is equal to the number of the first connection lines 201, and the number of the second sub-lines 2032 is equal to the number of the first sub-lines 2031.
The embodiment of the invention also provides a display device, which comprises the touch display panel and a touch integrated circuit electrically connected with the touch display panel, wherein the specific structure of the touch display panel is shown in fig. 1 to 5 and related description, and the detailed description is omitted herein. The display device provided by the embodiment of the invention can be as follows: products or components with display function such as mobile phones, tablet computers, notebook computers, digital cameras, navigator and the like.
In summary, the touch display panel provided by the embodiment of the invention includes at least two touch electrode sets and a multiplexer located at one side of the at least two touch electrode sets; at least two touch electrode groups are arranged along a first direction, and each touch electrode group comprises a plurality of touch electrodes arranged along a second direction; wherein the multiplexer at least comprises a first connection unit and a second connection unit; the first connection unit comprises a first connection line, a first switch control line and a first transmission line; the first end of the first connecting wire is electrically connected with the touch electrode, the second end of the first connecting wire is electrically connected with the first end of the first switch control wire, the second end of the first switch control wire is electrically connected with the first end of the first transmission wire, and the second end of the first transmission wire is electrically connected with the touch integrated circuit; the second connection unit comprises a second connection line and a second switch control line; the first end of the second connecting wire is electrically connected with the touch electrode, and the second end of the second connecting wire is electrically connected with the first end of the second switch control wire; the second end of the second switch control line is electrically connected with the first end of the first transmission line through at least one second transmission line; according to the invention, the multiplexer at least comprises the first connecting unit and the second connecting unit, and the second switch control line of the second connecting unit is electrically connected with the first transmission line of the first connecting unit through at least one second transmission line, namely, the second connecting unit and the first connecting unit share the first transmission line, so that the space of part of the transmission lines can be saved, the size of the multiplexer is greatly reduced, the space optimization of the multiplexer structure is realized, the compatibility of the multiplexer structure is improved, and the technical problems that the structure of the multiplexer of the touch display panel in the prior art occupies a large space and cannot be placed are solved.
The above describes a touch display panel and a display device provided by the embodiments of the present invention in detail. It should be understood that the exemplary embodiments described herein are to be considered merely descriptive for aiding in the understanding of the method of the present invention and its core concepts and not for limiting the invention.
Claims (10)
1. The touch display panel is characterized by comprising at least two touch electrode groups and a multiplexer positioned at one side of the at least two touch electrode groups; the at least two touch electrode groups are arranged along a first direction, and each touch electrode group comprises a plurality of touch electrodes arranged along a second direction; wherein the multiplexer comprises at least:
the first connection unit comprises a first connection line, a first switch control line and a first transmission line; the first end of the first connecting wire is electrically connected with the touch electrode, the second end of the first connecting wire is electrically connected with the first end of the first switch control wire, the second end of the first switch control wire is electrically connected with the first end of the first transmission wire, and the second end of the first transmission wire is electrically connected with the touch integrated circuit;
the second connecting unit comprises a second connecting wire and a second switch control wire; the first end of the second connecting wire is electrically connected with the touch electrode, and the second end of the second connecting wire is electrically connected with the first end of the second switch control wire;
the second end of the second switch control line is electrically connected with the first end of the first transmission line through at least one second transmission line.
2. The touch display panel according to claim 1, wherein the first connection line, the first switch control line, the first transmission line, the second connection line, and the second switch control line are arranged in the same layer, and the second transmission line is arranged in different layers from the first connection line, the first switch control line, the first transmission line, the second connection line, and the second switch control line.
3. The touch display panel according to claim 2, wherein the first connection line, the first transmission line and the second connection line are arranged in parallel, and the second transmission line is perpendicular to the first connection line, the first transmission line and the second connection line.
4. The touch display panel of claim 2, wherein the touch electrode is disposed in a same layer as the first connection line, the first switch control line, the first transmission line, the second connection line, and the second switch control line.
5. The touch display panel according to claim 1, wherein the first transmission line includes a first sub-line and a second sub-line, the first sub-line and the second sub-line are connected in parallel, the first sub-line is located in the first connection unit, and the second sub-line is located at a side of the second connection unit away from the first connection unit.
6. The touch display panel according to claim 5, wherein the number of the first sub-lines is equal to the number of the first connection lines, and the number of the second sub-lines is equal to the number of the first sub-lines.
7. The touch display panel of claim 1, wherein the number of the second transmission lines is equal to the number of the second connection lines, and the number of the second transmission lines is a positive integer multiple of the number of the first transmission lines.
8. The touch display panel of claim 1, wherein in a light-emitting side direction of the touch display panel, an orthographic projection of the first transmission line coincides with an orthographic projection of the first connection line or the second connection line.
9. The touch display panel according to claim 1, wherein the first connection line, the first switch control line, the first transmission line, the second connection line, and the second switch control line are all arranged along the first direction.
10. A display device comprising the touch display panel of any one of claims 1 to 9 and a touch integrated circuit electrically connected to the touch display panel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222048.3A CN114003140B (en) | 2021-10-20 | 2021-10-20 | Touch display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222048.3A CN114003140B (en) | 2021-10-20 | 2021-10-20 | Touch display panel and display device |
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| CN114003140A CN114003140A (en) | 2022-02-01 |
| CN114003140B true CN114003140B (en) | 2023-06-27 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109166457A (en) * | 2018-09-30 | 2019-01-08 | 武汉天马微电子有限公司 | Display panel and display device |
| CN112925448A (en) * | 2021-03-22 | 2021-06-08 | 厦门天马微电子有限公司 | Touch display panel, detection method thereof and touch display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI566147B (en) * | 2015-10-08 | 2017-01-11 | 宏碁股份有限公司 | Foldable touch module and method for controlling the same and foldable display device |
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- 2021-10-20 CN CN202111222048.3A patent/CN114003140B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109166457A (en) * | 2018-09-30 | 2019-01-08 | 武汉天马微电子有限公司 | Display panel and display device |
| CN112925448A (en) * | 2021-03-22 | 2021-06-08 | 厦门天马微电子有限公司 | Touch display panel, detection method thereof and touch display device |
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| CN114003140A (en) | 2022-02-01 |
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