CN111078050B - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
- Publication number
- CN111078050B CN111078050B CN201911311493.XA CN201911311493A CN111078050B CN 111078050 B CN111078050 B CN 111078050B CN 201911311493 A CN201911311493 A CN 201911311493A CN 111078050 B CN111078050 B CN 111078050B
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- Prior art keywords
- display panel
- substrate
- touch display
- layer
- transparent conductive
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Classifications
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention relates to the technical field of display equipment, and discloses a touch display panel and a display device, wherein the touch display panel comprises: a substrate; an electroluminescent layer formed on one side of the substrate, the electroluminescent layer including a cathode; the touch sensing layer is formed on one side of the electroluminescent layer, which is away from the substrate, and the shielding electrode is positioned on the periphery of the touch sensing layer; and the transparent conductive layer is formed on one side of the substrate, which is far away from the electroluminescent layer, and is electrically connected with the shielding electrode. According to the touch display panel, the transparent conducting layer is added on the substrate and is electrically connected with the shielding wire, so that the sensitivity of the touch display panel is higher, and the touch detection effect is better.
Description
Technical Field
The present invention relates to the field of display devices, and in particular, to a touch display panel and a display device.
Background
With the rapid development of the electronic market, the requirements on the point reporting rate and the signal to noise ratio of a touch sensor in a touch display panel are increasingly severe. Larger parasitic capacitance is generated between a touch sensing circuit and a cathode in the conventional touch display panel, so that larger capacitance to ground is generated, the point reporting rate and noise resistance of the touch display panel are greatly reduced, and the touch detection precision of the touch display panel is reduced.
Disclosure of Invention
The invention provides a touch display panel and a display device, wherein a transparent conductive layer is added on a substrate and is electrically connected with a shielding wire, so that the touch display panel has higher sensitivity and better touch detection effect.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A touch display panel, comprising:
A substrate;
an electroluminescent layer formed on one side of the substrate, the electroluminescent layer including a cathode;
The touch sensing layer is formed on one side of the electroluminescent layer, which is away from the substrate, and the shielding electrode is positioned on the periphery of the touch sensing layer;
and the transparent conductive layer is formed on one side of the substrate, which is far away from the electroluminescent layer, and is electrically connected with the shielding electrode.
The touch display panel comprises a substrate, an electroluminescent layer, a touch sensing layer, a shielding electrode and a transparent conductive layer, wherein the transparent conductive layer is arranged on one side of the substrate, which is away from the shielding electrode, and is electrically connected with the shielding electrode. The touch display panel has higher sensitivity and better touch detection effect.
Preferably, the transparent conductive layer is electrically connected to the shielding electrode through a via hole penetrating through the substrate and the electroluminescent layer in the thickness direction.
Preferably, the touch display panel further includes a driving module, and a shielding wire electrically connected to the shielding electrode is disposed on the driving module, where the transparent conductive layer is electrically connected to the shielding wire to realize electrical connection between the transparent conductive layer and the shielding electrode.
Preferably, a bonding pad for bearing the shielding wire is further arranged on the substrate, and the part of the shielding wire between the driving module and the substrate is welded and fixed with the bonding pad.
Preferably, the substrate is made of cycloolefin copolymer or poly (terephthalic acid) plastic.
Preferably, the transparent conductive layer is made of indium tin oxide.
Preferably, the transparent conductive layer is prepared by a plating process.
Preferably, the touch sensing layer includes a plurality of signal sensing electrodes and signal driving electrodes formed on the electroluminescent layer.
Preferably, the touch display panel further includes at least one electrostatic discharge diode, one end of each electrostatic discharge diode is electrically connected to the transparent conductive layer, and the other end of each electrostatic discharge diode is grounded.
Preferably, the electrostatic discharge diode is a transient voltage suppression diode.
The invention also provides a display device which comprises any one of the touch display panels provided in the technical scheme.
Drawings
Fig. 1 is a schematic top view structure of a first touch display panel according to the present invention;
fig. 2 is a schematic bottom view of a first touch display panel according to the present invention;
fig. 3 is a schematic cross-sectional view of a first touch display panel according to the present invention;
fig. 4 is a schematic top view structure of a second touch display panel according to the present invention;
Fig. 5 is a schematic bottom view of a second touch display panel according to the present invention;
Fig. 6 is a schematic cross-sectional view of a second touch display panel according to the present invention.
Icon:
1-a substrate; 2-shielding the electrode; 3-a transparent conductive layer; 4-via holes; a 5-drive module; 6-shielding wires; 7-bonding pads; 8-a signal sensing electrode; 9-signal driving electrodes; 10-an electrostatic discharge diode; 11-ground wire; 12-metal bridge; 13-insulating layer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 6, the present invention provides a touch display panel, including:
A substrate 1;
an electroluminescent layer formed on one side of the substrate 1, the electroluminescent layer including a cathode;
The touch sensing layer is formed on one side of the electroluminescent layer, which is away from the substrate 1, and the shielding electrode 2 is positioned on the periphery of the touch sensing layer;
And the transparent conductive layer 3 is formed on one side of the substrate 1 away from the electroluminescent layer, and the transparent conductive layer 3 is electrically connected with the shielding electrode 2.
The touch display panel comprises a substrate 1, an electroluminescent layer, a touch sensing layer, a shielding electrode 2 and a transparent conductive layer 3, wherein the transparent conductive layer 3 is arranged on one side of the substrate 1, which is away from the shielding electrode 2, and the transparent conductive layer 3 is electrically connected with the shielding electrode 2, and the transparent conductive layer 3 is arranged on one side of the substrate 1, which is away from the shielding electrode 2, and is electrically connected with the shielding electrode 2, the transparent conductive layer 3 and the shielding electrode 2 are electrically connected, and then have the function of electrostatic shielding, which is equivalent to forming a shielding layer on one side surface of the substrate 1, the transparent electrode can play the role of electrostatic shielding, and reduce parasitic capacitance between the touch sensing layer and a cathode and the capacitance to ground of the touch sensing layer, thereby effectively improving the point reporting rate of the touch display panel and the touch detection precision of the touch display panel. The touch display panel has higher sensitivity and better touch detection effect.
Specifically, as shown in fig. 3, the transparent conductive layer 3 and the shielding electrode 2 are electrically connected through a via hole 4 penetrating the substrate 1 and the electroluminescent layer in the thickness direction.
In one embodiment, the transparent conductive layer 3 is electrically connected to the shielding electrode 2 through the via hole 4 penetrating through the substrate 1 and the electroluminescent layer in the thickness direction, and in this embodiment, only the substrate 1 and the electroluminescent layer need be perforated, and the shielding electrode 2 is electrically connected to the transparent conductive layer 3 through the conductive material penetrating through the via hole 4, without increasing circuit wiring.
Specifically, as shown in fig. 5, the touch display panel further includes a driving module 5, and a shielding wire 6 electrically connected to the shielding electrode 2 is disposed on the driving module 5, where the transparent conductive layer 3 is electrically connected to the shielding wire 6 to realize electrical connection between the transparent conductive layer 3 and the shielding electrode 2.
In another embodiment, the transparent conductive layer 3 is electrically connected with the shielding wire 6 on the driving circuit, and since the shielding wire 6 on the driving circuit is electrically connected with the shielding electrode 2 on the substrate 1, the electrical connection between the transparent conductive layer 3 and the shielding electrode 2 can be realized, under self-capacity, the driving circuit can output a special waveform to the shielding electrode 2 so that the transparent conductive layer 3 plays a shielding role, and the distance between the touch sensing layer and the ground can be increased by arranging the transparent conductive layer 3, so that the ground capacitance of the touch display panel is reduced, the point reporting rate of the touch display panel is improved, and the touch precision of the touch display panel is increased.
Specifically, as shown in fig. 5, a pad 7 for carrying a shield wire 6 is further provided on the substrate 1, and a portion of the shield wire 6 between the driving module 5 and the substrate 1 is soldered to the pad 7.
In another embodiment, the substrate 1 is provided with the bonding pads 7, the number of the bonding pads 7 is the same as that of the shielding wires 6, and the part of the shielding wires 6 between the driving circuit and the substrate 1 is fixed by the bonding pads 7, and a specific fixing mode can be welding. Through setting up pad 7 can realize the bearing to shielded wire 6, avoid the shielded wire 6 to influence the shielding effect of transparent conducting layer 3 after the damage.
Specifically, the substrate 1 is made of cycloolefin copolymer or polyethylene terephthalate.
The substrate 1 may be a flexible substrate, or may be a substrate 1 made of a conventional hard material, which is not limited by the present invention.
Specifically, the transparent conductive layer 3 is made of indium tin oxide.
The transparent conductive layer 3 is made of a common indium tin oxide material having optical transparency and conductive wire properties, and the material of the transparent conductive layer 3 may be other transparent conductive materials.
Specifically, the transparent conductive layer 3 is prepared by a plating process.
The transparent conductive layer 3 may be prepared by a film plating process, and common methods include electron beam evaporation, physical vapor deposition, or some sputtering deposition techniques, etc., which are not limited by the present invention.
Specifically, as shown in fig. 1,2 and 6, the touch sensing layer includes a plurality of signal sensing electrodes 8 and signal driving electrodes 9 formed on the electroluminescent layer.
The touch sensing layer comprises a plurality of signal sensing electrodes 8 and signal driving electrodes 9, driving signals are sent to the driving electrode blocks through the driving circuit, sensing signals are generated after passing through the sensing electrodes and returned to the driving circuit, and the driving signals and the sensing signals are subjected to contrast analysis processing, so that the touch occurrence position can be accurately determined.
The touch display panel further comprises a ground wire 11 formed on the periphery of the touch sensing layer, a metal bridge 12 for connecting the signal sensing electrode 8 and the signal driving electrode 9, an insulating layer 13 arranged between the metal bridge 12 and the signal sensing electrode 8 and the signal driving electrode 9, and other components, wherein the components are the same as those in the prior art, and the invention is not redundant.
Specifically, as shown in fig. 1,2,4 and 5, the touch display panel further includes at least one electrostatic discharge diode 10, and one end of each electrostatic discharge diode 10 is electrically connected to the transparent conductive layer 3, and the other end is grounded.
The touch display panel further comprises at least one electrostatic discharge diode 10, and the transparent electrode is electrically connected with each electrostatic discharge diode 10 to form an electrostatic discharge channel, so that the electrostatic protection capability of the touch display panel can be further improved.
Specifically, the electrostatic discharge diode 10 is a transient voltage suppression diode.
The electrostatic discharge diode 10 adopts a transient voltage suppression diode (TRANSIENT VOLTAGE SUPPRESSION DIODE), which is a diode-type high-efficiency protection device and can realize electrostatic protection of the touch display panel.
The invention also provides a display device which comprises any one of the touch display panels provided in the technical scheme.
The display device can realize high-sensitivity touch detection and better electrostatic protection.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. A touch display panel, comprising:
A substrate, a driving module;
an electroluminescent layer formed on one side of the substrate, the electroluminescent layer including a cathode;
The touch sensing layer is formed on one side of the electroluminescent layer, which is away from the substrate, and the shielding electrode is positioned on the periphery of the touch sensing layer;
The transparent conductive layer is formed on one side of the substrate, which is far away from the electroluminescent layer, is electrically connected with the shielding electrode and is used for increasing a gap between the touch sensing layer and the ground;
The driving module is provided with a shielding wire electrically connected with the shielding electrode, wherein the transparent conductive layer is electrically connected with the shielding wire so as to realize the electrical connection between the transparent conductive layer and the shielding electrode;
the substrate is also provided with a bonding pad for bearing the shielding wires, the part of the shielding wires between the driving module and the substrate is welded and fixed with the bonding pad, and the shielding wires are in one-to-one correspondence with the bonding pads.
2. The touch display panel according to claim 1, wherein the transparent conductive layer and the shielding electrode are electrically connected through a via hole penetrating through the substrate and the electroluminescent layer in a thickness direction.
3. The touch display panel according to claim 1, wherein the substrate is made of cycloolefin copolymer or poly (terephthalic acid) plastic.
4. The touch display panel according to claim 1, wherein the transparent conductive layer is made of indium tin oxide.
5. The touch display panel of claim 1, wherein the transparent conductive layer is prepared by a plating process.
6. The touch display panel of claim 1, wherein the touch sensing layer comprises a plurality of signal sensing electrodes and signal driving electrodes formed on the electroluminescent layer.
7. The touch display panel according to any one of claims 1-6, further comprising at least one electrostatic discharge diode, wherein one end of each electrostatic discharge diode is electrically connected to the transparent conductive layer, and the other end is grounded.
8. The touch display panel of claim 7, wherein the electrostatic discharge diode is a transient voltage suppression diode.
9. A display device comprising a touch display panel according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911311493.XA CN111078050B (en) | 2019-12-18 | 2019-12-18 | Touch display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911311493.XA CN111078050B (en) | 2019-12-18 | 2019-12-18 | Touch display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111078050A CN111078050A (en) | 2020-04-28 |
| CN111078050B true CN111078050B (en) | 2024-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911311493.XA Active CN111078050B (en) | 2019-12-18 | 2019-12-18 | Touch display panel and display device |
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| CN (1) | CN111078050B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114675758B (en) * | 2022-03-31 | 2025-09-12 | 京东方科技集团股份有限公司 | Touch panel and touch display device |
| US12393303B2 (en) | 2022-09-22 | 2025-08-19 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display panels and display apparatus |
| CN118092125B (en) * | 2022-11-16 | 2025-03-21 | 荣耀终端股份有限公司 | Display module and electronic device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011191639A (en) * | 2010-03-16 | 2011-09-29 | Hitachi Displays Ltd | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI562037B (en) * | 2015-02-12 | 2016-12-11 | Superc Touch Corp | Touch display panel with shielding electrode |
| CN106125980A (en) * | 2016-06-22 | 2016-11-16 | 南昌欧菲光科技有限公司 | Touch control display apparatus |
| US10331263B2 (en) * | 2016-11-23 | 2019-06-25 | Superc-Touch Corporation | OLED display panel with touch sensing electrodes |
| CN106932942B (en) * | 2017-03-24 | 2020-07-28 | 厦门天马微电子有限公司 | Touch control display device |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011191639A (en) * | 2010-03-16 | 2011-09-29 | Hitachi Displays Ltd | Display device |
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| CN111078050A (en) | 2020-04-28 |
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