CN113064514A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN113064514A CN113064514A CN202110275331.6A CN202110275331A CN113064514A CN 113064514 A CN113064514 A CN 113064514A CN 202110275331 A CN202110275331 A CN 202110275331A CN 113064514 A CN113064514 A CN 113064514A
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- China
- Prior art keywords
- signal line
- display panel
- control signal
- touch
- touch electrodes
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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
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
Abstract
The invention discloses a display panel and a display device. According to the invention, the control signal wires made of the transparent conductive material are used, so that the control signal wires can be positioned on the touch electrodes, the interval between the touch electrodes is reduced, and the density of the touch electrodes is increased. In addition, the second signal line in the control signal lines is bent in a step shape, so that the length of the second signal line is increased, the space is fully utilized, the length of the second signal line is close to that of the first signal line, and the difference of the resistance value of each control signal line is reduced. Furthermore, the bending part of the second signal line and the orthographic projection of the touch electrodes on the display panel have an overlapping area, so that capacitive reactance differences of different control signal lines and touch electrodes are reduced, and the touch performance of the display panel is improved.
Description
Technical Field
The present invention relates to display panel technologies, and in particular, to a display panel and a display device.
Background
The display device mainly includes a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP), an Organic Light Emitting Diode (OLED), and an Active Matrix Organic Light Emitting Diode (AMOLED), and has a wide application space in vehicle-mounted, mobile phone, tablet, computer and television products.
Generally, touch control functions have become one of the standards of most display devices, and among them, capacitive touch screens are widely used, and the basic principle is to use a finger or a stylus to generate capacitance with the touch screen, and use an electrical signal generated by capacitance change before and after touch control to determine whether a panel is touched and determine touch coordinates.
An important touch technology of the capacitive touch panel is self-capacitance, i.e., a touch function is realized by a layer of metal. The touch electrode and the touch signal line may be formed of the same metal layer, such as a transparent oxide conductive material or a metal material, such as Ti/Al/Ti (titanium/aluminum/titanium), Al (aluminum) alloy, and may be designed into a grid-like pattern.
Because the lengths of the control signal lines connecting different touch electrodes are different, the corresponding impedances are also different, and thus a voltage difference problem is generated, and even the touch performance may be seriously affected.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which effectively solve the problem that the corresponding impedance and capacitive reactance are different due to different lengths of control signal wires connecting different touch electrodes.
According to an aspect of the present invention, there is provided a display panel including: a plurality of touch electrodes; a plurality of control signal lines connected to the plurality of touch electrodes; the touch integrated circuit is arranged at one end of the display panel and is connected with the touch electrodes through the control signal lines; the plurality of control signal lines include a first signal line and a second signal line, wherein the touch electrode connected to the first signal line is located in a distal end region, the touch electrode connected to the second signal line is located in a proximal end region, the distal end region is located at the other end of the display panel, the proximal end region is located in a region formed between the touch integrated circuit and the distal end region, and a linear distance from the touch electrode connected to the second signal line to the touch integrated circuit is smaller than a length of the second signal line.
Further, the display panel further includes: the Thin Film Transistor (TFT) wiring layer, the OLED device layer, the thin film packaging layer and the inorganic layer; the OLED device layer is located on the TFT wiring layer, the patterned layer is located on the OLED device layer, the thin film packaging layer is located on the patterned layer, the control signal line is located on the thin film packaging layer, the inorganic layer is located on the thin film packaging layer, and the touch electrodes are located on the inorganic layer
Furthermore, the touch electrodes are distributed in an array and located on the inorganic layer.
Furthermore, the touch electrode and the control signal lines are arranged in different layers.
Furthermore, the touch electrode is connected with the control signal line through a plurality of via holes.
Furthermore, the control signal line is made of a transparent conductive material.
Furthermore, the second signal line comprises a bending part and a non-bending part, one end of the bending part is connected with one end of the non-bending part, the other end of the bending part is connected with the touch control electrode, and the other end of the non-bending part is connected with the touch control integrated circuit; the bending part and the orthographic projections of the touch electrodes on the display panel have an overlapping area.
Furthermore, the control signal lines are all located in the display area of the display panel.
Further, the number of the control signal lines is the same as the number of the touch electrodes.
According to another aspect of the present invention, there is provided a display device including the display panel according to any one of the embodiments of the present invention.
The invention has the advantages that the control signal wires are made of transparent conductive materials, so that the control signal wires can be positioned on the touch electrodes, the interval between the touch electrodes is reduced, and the density of the touch electrodes is increased. In addition, the second signal line in the control signal lines is bent in a step shape, so that the length of the second signal line is increased, the space is fully utilized, the length of the second signal line is close to that of the first signal line, and the difference of the resistance value of each control signal line is reduced. Furthermore, the bending part of the second signal line and the orthographic projection of the touch electrodes on the display panel have an overlapping area, so that capacitive reactance differences of different control signal lines and touch electrodes are reduced, and the touch performance of the display panel is improved.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a display panel according to a second embodiment of the present invention.
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1 according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a structure of a first signal line and a second signal line according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a second signal structure according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The technical solution 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. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention. The display panel includes: a plurality of touch electrodes 10, a plurality of control signal lines 20 and a touch integrated circuit 30.
Wherein the control signal lines 20 are connected to the touch electrodes 10. The touch integrated circuit 30 is disposed at one end of the display panel, and the touch integrated circuit 30 is connected to the corresponding touch electrodes 10 through the control signal lines 20.
The plurality of control signal lines 20 include a first signal line 21 and a second signal line 22, wherein the touch electrode 10 connected to the first signal line 21 is located at a distal end region, and the touch electrode 10 connected to the second signal line 22 is located at a proximal end region, wherein the distal end region is located at the other end of the display panel, and the proximal end region is located in an area formed between the touch integrated circuit 30 and the distal end region, wherein a linear distance from the touch electrode 10 connected to the second signal line 22 to the touch integrated circuit 30 is smaller than a length of the second signal line 22. This is so arranged that the length of the second signal line 22 is increased, thereby reducing the difference in resistance between the first signal line 21 and the second signal line 22.
As shown in fig. 4 and 5, the second signal line 22 includes a bending portion 222 and a non-bending portion 221, one end of the bending portion 222 is connected to one end of the non-bending portion 221, the other end of the bending portion 222 is connected to the touch electrode 10, and the other end of the non-bending portion 221 is connected to the touch integrated circuit 30. The bending portion 222 and the orthographic projections of the touch electrodes 10 on the display panel have an overlapping area. With this configuration, the capacitive reactance difference between the first signal line 21, the second signal line 22 and the touch electrode 10 can be reduced.
In this embodiment, the first signal line 21 is a straight line, and the second signal line 22 is a broken line, but the invention is not limited thereto, and the second signal line 22 may also be an arc in other embodiments. Compared with the first embodiment, the stepped bending can increase the utilization rate of the space.
In the present embodiment, the touch electrodes 10 are distributed in an array and located on the inorganic layer 34. The touch electrode 10 and the control signal lines 20 are disposed in different layers. The number of the plurality of control signal lines 20 is the same as the number of the plurality of touch electrodes 10. The plurality of control signal lines are all located in the display area 40 of the display panel.
Referring to fig. 3 in combination, the display panel further includes: a TFT wiring layer 31, an OLED device layer 32, a thin film encapsulation layer 33 and an inorganic layer 34.
The OLED device layer 32 is located on the TFT wiring layer 31, the thin film packaging layer 33 is located on the OLED device layer 32, the control signal line 20 is located on the thin film packaging layer 33, the inorganic layer 34 is located on the thin film packaging layer 33, and the touch electrodes 10 are located on the inorganic layer 34.
The material of the control signal line 20 is a transparent conductive material, such as indium tin oxide, but is not limited thereto.
The invention has the advantages that the control signal wires made of the transparent conductive material can be positioned on the touch electrodes, the interval between the touch electrodes is reduced, and the density of the touch electrodes is increased. In addition, the second signal line in the control signal lines is bent in a step shape, so that the length of the second signal line is increased, the space is fully utilized, the length of the second signal line is close to that of the first signal line, and the difference of the resistance value of each control signal line is reduced. Furthermore, the bending part of the second signal line and the orthographic projection of the touch electrodes on the display panel have an overlapping area, so that capacitive reactance differences of different control signal lines and touch electrodes are reduced, and the touch performance of the display panel is improved.
Fig. 2 is a schematic structural diagram of a display panel according to a second embodiment of the present invention. The display panel includes: a plurality of touch electrodes 10, a plurality of control signal lines 20 and a touch integrated circuit 30.
Wherein the control signal lines 20 are connected to the touch electrodes 10. The touch integrated circuit 30 is disposed at one end of the display panel, and the touch integrated circuit 30 is connected to the corresponding touch electrodes 10 through the control signal lines 20.
The plurality of control signal lines 20 include a first signal line 21 and a second signal line 22, wherein the touch electrode 10 connected to the first signal line 21 is located at a distal end region, and the touch electrode 10 connected to the second signal line 22 is located at a proximal end region, wherein the distal end region is located at the other end of the display panel, and the proximal end region is located in an area formed between the touch integrated circuit 30 and the distal end region, wherein a linear distance from the touch electrode 10 connected to the second signal line 22 to the touch integrated circuit 30 is smaller than a length of the second signal line 22. This is so arranged that the length of the second signal line 22 is increased, thereby reducing the difference in resistance between the first signal line 21 and the second signal line 22.
As shown in fig. 4 and 5, the second signal line 22 includes a bending portion 222 and a non-bending portion 221, one end of the bending portion 222 is connected to one end of the non-bending portion 221, the other end of the bending portion 222 is connected to the touch electrode 10, and the other end of the non-bending portion 221 is connected to the touch integrated circuit 30. The bending portion 222 and the orthographic projections of the touch electrodes 10 on the display panel have an overlapping area. With this configuration, the capacitive reactance difference between the first signal line 21, the second signal line 22 and the touch electrode 10 can be reduced. The plurality of control signal lines 20 are all located in a display area 40 of the display panel.
In this embodiment, the first signal line 21 is a straight line, and the second signal line 22 is a broken line, and is bent in a step shape, but not limited thereto, and the second signal line 22 may also be an arc shape in other embodiments. Compared with the first embodiment, the stepped bending can increase the utilization rate of the space.
In the present embodiment, the touch electrodes 10 are distributed in an array and located on the inorganic layer 34. The touch electrode 10 and the control signal lines 20 are disposed in different layers. The number of the plurality of control signal lines 20 is the same as the number of the plurality of touch electrodes 10.
Referring to fig. 3 in combination, the display panel further includes: a TFT wiring layer 31, an OLED device layer 32, a thin film encapsulation layer 33 and an inorganic layer 34.
The OLED device layer 32 is located on the TFT wiring layer 31, the thin film packaging layer 33 is located on the OLED device layer 32, the control signal line 20 is located on the thin film packaging layer 33, the inorganic layer 34 is located on the thin film packaging layer 33, and the touch electrodes 10 are located on the inorganic layer 34.
The material of the control signal line 20 is a transparent conductive material, such as indium tin oxide, but is not limited thereto.
The invention has the advantages that the control signal wires made of the transparent conductive material can be positioned on the touch electrodes, the interval between the touch electrodes is reduced, and the density of the touch electrodes is increased. In addition, the second signal line in the control signal lines is bent in a step shape, so that the length of the second signal line is increased, the space is fully utilized, the length of the second signal line is close to that of the first signal line, and the difference of the resistance value of each control signal line is reduced. Furthermore, the bending part of the second signal line and the orthographic projection of the touch electrodes on the display panel have an overlapping area, so that capacitive reactance differences of different control signal lines and touch electrodes are reduced, and the touch performance of the display panel is improved.
As shown in fig. 6, which is a schematic structural diagram of a display device according to an embodiment of the present invention, the display device 200 includes the display panel 100 according to the embodiment. The display device 200 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.
When the display device 200 of the present embodiment adopts the pixel structure 100 described in the above embodiments, the display effect is better.
Of course, other conventional structures, such as a power supply unit, a display driving unit, and the like, may also be included in the display device 200 of the present embodiment.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A display panel, comprising:
a plurality of touch electrodes;
a plurality of control signal lines connected to the plurality of touch electrodes; and
the touch integrated circuit is arranged at one end of the display panel and is connected with the touch electrodes through the control signal lines;
the plurality of control signal lines include a first signal line and a second signal line, wherein the touch electrode connected to the first signal line is located in a distal end region, the touch electrode connected to the second signal line is located in a proximal end region, the distal end region is located at the other end of the display panel, the proximal end region is located in a region formed between the touch integrated circuit and the distal end region, and a linear distance from the touch electrode connected to the second signal line to the touch integrated circuit is smaller than a length of the second signal line.
2. The display panel according to claim 1, characterized in that the display panel further comprises: the Thin Film Transistor (TFT) wiring layer, the OLED device layer, the thin film packaging layer and the inorganic layer;
the OLED device layer is located on the TFT wiring layer, the patterned layer is located on the OLED device layer, the thin film packaging layer is located on the patterned layer, the control signal line is located on the thin film packaging layer, the inorganic layer is located on the thin film packaging layer, and the touch electrodes are located on the inorganic layer.
3. The display panel of claim 1, wherein the touch electrodes are distributed in an array and located on the inorganic layer.
4. The display panel of claim 1, wherein the touch electrode and the plurality of control signal lines are disposed on different layers.
5. The display panel according to claim 1, wherein the touch electrode is connected to the control signal line through a plurality of via holes.
6. The display panel according to claim 1, wherein a material of the control signal line is a transparent conductive material.
7. The display panel according to claim 1, wherein the second signal line comprises a bent portion and a non-bent portion, one end of the bent portion is connected to one end of the non-bent portion, the other end of the bent portion is connected to the touch electrode, and the other end of the non-bent portion is connected to the touch integrated circuit;
the bending part and the orthographic projections of the touch electrodes on the display panel have an overlapping area.
8. The display panel according to claim 1, wherein the plurality of control signal lines are each located in a display region of the display panel.
9. The display panel according to claim 1, wherein the number of the plurality of control signal lines is the same as the number of the plurality of touch electrodes.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110275331.6A CN113064514A (en) | 2021-03-15 | 2021-03-15 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110275331.6A CN113064514A (en) | 2021-03-15 | 2021-03-15 | Display panel and display device |
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| CN113064514A true CN113064514A (en) | 2021-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110275331.6A Pending CN113064514A (en) | 2021-03-15 | 2021-03-15 | Display panel and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114578997A (en) * | 2022-03-11 | 2022-06-03 | Tcl华星光电技术有限公司 | Display panel |
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| CN110716355A (en) * | 2019-10-23 | 2020-01-21 | 厦门天马微电子有限公司 | Display panel and display device |
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2021
- 2021-03-15 CN CN202110275331.6A patent/CN113064514A/en active Pending
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| CN104345984A (en) * | 2013-07-23 | 2015-02-11 | 乐金显示有限公司 | Display device |
| CN104951170A (en) * | 2015-06-22 | 2015-09-30 | 友达光电股份有限公司 | Touch control display panel |
| CN205563508U (en) * | 2016-02-04 | 2016-09-07 | 天马微电子股份有限公司 | Array substrate and touch -control display screen |
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| CN114578997A (en) * | 2022-03-11 | 2022-06-03 | Tcl华星光电技术有限公司 | Display panel |
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