CN112099670B - Touch substrate, touch display panel and touch display device - Google Patents
Touch substrate, touch display panel and touch display device Download PDFInfo
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- CN112099670B CN112099670B CN202010955074.6A CN202010955074A CN112099670B CN 112099670 B CN112099670 B CN 112099670B CN 202010955074 A CN202010955074 A CN 202010955074A CN 112099670 B CN112099670 B CN 112099670B
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- 239000000758 substrate Substances 0.000 title claims abstract description 60
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- JYMITAMFTJDTAE-UHFFFAOYSA-N aluminum zinc oxygen(2-) Chemical compound [O-2].[Al+3].[Zn+2] JYMITAMFTJDTAE-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 12
- 230000006698 induction Effects 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
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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
- G06F3/0412—Digitisers structurally integrated in a display
-
- 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
-
- 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
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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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)
- Position Input By Displaying (AREA)
Abstract
The embodiment of the application provides a touch substrate, a touch display panel and a touch display device. The touch substrate comprises a first conductive layer, an insulating layer and a second conductive layer which are sequentially arranged; the first conductive layer comprises a plurality of first touch electrodes and a plurality of second touch electrodes, the first touch electrodes comprise a plurality of first touch electrode blocks connected into a whole, and the second touch electrodes comprise a plurality of second touch electrode blocks; the second conductive layer comprises a plurality of bridging parts, a plurality of first auxiliary electrode blocks and a plurality of second auxiliary electrode blocks, wherein the bridging parts are respectively and electrically connected with two adjacent second touch electrode blocks in the same second touch electrode, each first auxiliary electrode block is electrically connected with one first touch electrode block, and each second auxiliary electrode block is electrically connected with one second touch electrode block. The touch substrate can reduce the non-uniformity of the induced capacitance caused by the IRdrop pair of the induced signal line, and the auxiliary electrode and the bridging structure can be formed simultaneously, so that the process steps and the generation cost are not increased.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a touch substrate, a touch display panel, and a touch display device.
Background
The capacitive touch technology has wider application in the current touch screen, in particular to the self-capacitive touch technology, and has better application prospect because the multi-point touch can be realized.
The capacitive touch screen needs a touch sensing signal to be driven, and in a direction away from a sensing signal input area, due to the voltage drop (IR drop) effect of a signal transmission line, the uniformity of a touch detection signal is poor, and particularly in a large-size touch screen, the uniformity problem of the touch detection signal caused by the IR drop is more obvious.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a touch substrate, a touch display panel and a touch display device, so as to solve the technical problem of poor uniformity of touch detection signals caused by IR drop in the prior art.
In a first aspect, embodiments of the present application provide a touch substrate including a first conductive layer, a second conductive layer, and an insulating layer between the first conductive layer and the second conductive layer; the first conductive layer comprises a plurality of first touch electrode blocks arranged along a first direction, a plurality of second touch electrode blocks arranged along a second direction and a plurality of connecting parts, wherein the first touch electrode blocks and the second touch electrode blocks are mutually insulated, the adjacent first touch electrode blocks are electrically connected through the connecting parts, and the first direction is intersected with the second direction; the second conductive layer comprises a plurality of bridging parts, a plurality of first auxiliary electrode blocks and a plurality of second auxiliary electrode blocks, wherein the bridging parts are respectively and electrically connected with two adjacent second touch electrode blocks in the same second touch electrode, each first auxiliary electrode block is electrically connected with one first touch electrode block, and each second auxiliary electrode block is electrically connected with one second touch electrode block.
Optionally, the touch substrate includes a touch area and a sensing signal input area located at one side of the touch area, and the first touch electrode block and the second touch electrode block are located at the touch area; the first auxiliary electrode block comprises a first auxiliary electrode block and a second auxiliary electrode block, and the second auxiliary electrode block comprises a first second auxiliary electrode block and a second auxiliary electrode block; the distance between the first auxiliary electrode block and the sensing signal input area is larger than the distance between the second auxiliary electrode block and the sensing signal input area, and the area of the first auxiliary electrode block is larger than the area of the second auxiliary electrode block; the distance between the first second auxiliary electrode block and the sensing signal input area is greater than the distance between the second auxiliary electrode block and the sensing signal input area, and the area of the first second auxiliary electrode block is greater than the area of the second auxiliary electrode block.
Optionally, the touch area comprises a first touch sub-area and a second touch sub-area, the first touch sub-area comprises at least two rows of first auxiliary electrode blocks with equal areas and at least two rows of second auxiliary electrode blocks with equal areas, and the second touch sub-area comprises at least two rows of first auxiliary electrode blocks with equal areas and at least two rows of second auxiliary electrode blocks with equal areas; the distance between the first touch sub-area and the sensing signal input area is greater than the distance between the second touch sub-area and the sensing signal input area, the area of the first auxiliary electrode block in the first touch sub-area is greater than the area of the first auxiliary electrode block in the second touch sub-area, and the area of the second auxiliary electrode block in the first touch sub-area is greater than the area of the second auxiliary electrode block in the second touch sub-area.
Alternatively, the area of the first auxiliary electrode block and the area of the second auxiliary electrode block gradually increase in a direction in which the touch region is away from the sensing signal input region.
Optionally, the edge of the first touch electrode block is provided with a wavy shape or a zigzag shape, and the edge of the second touch electrode block is provided with a wavy shape or a zigzag shape which is adapted to the edge of the first touch electrode block, so that the distance between the edge of the first touch electrode block and the edge of the adjacent second touch electrode block is equal.
Optionally, the material of the first conductive layer is a metal mesh, indium tin oxide or zinc aluminum oxide.
Optionally, the material of the second conductive layer is metal, indium tin oxide or zinc aluminum oxide.
Optionally, the orthographic projection of the first touch electrode block on the plane of the insulating layer covers the orthographic projection of the first auxiliary electrode block on the plane of the insulating layer, and the orthographic projection of the second touch electrode block on the plane of the insulating layer covers the orthographic projection of the second auxiliary electrode block on the plane of the insulating layer.
In a second aspect, embodiments of the present application provide a touch display panel, where the touch display panel includes the touch substrate described above.
In a third aspect, embodiments of the present application provide a touch display device, where the touch display device includes the touch display panel described above.
The beneficial technical effects that technical scheme that this application embodiment provided brought are:
according to the touch substrate, the touch display panel and the touch display device, the first auxiliary electrode block and the second auxiliary electrode block which are respectively electrically connected with the first touch electrode block and the second touch electrode block are formed on the second conductive layer, namely the bridging layer, so that the first induction capacitance is formed between the first touch electrode block and the second touch electrode block, and the second induction capacitance is also formed between the first auxiliary electrode block and the second auxiliary electrode block, the whole induction capacitance is increased, and under the condition that the induction capacitance is uneven caused by IR drop, the increase of the induction capacitance is favorable for reducing the influence of IR drop on the induction capacitance; meanwhile, the auxiliary electrode is manufactured by adopting the bridging layer, can be formed simultaneously with the bridging structure, and does not increase the process steps and the production cost.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic top view of a touch substrate according to an embodiment of the present disclosure;
FIG. 2 is a schematic cross-sectional view of the touch substrate shown in FIG. 1 along line A-A;
FIG. 3 is another cross-sectional schematic view of the touch substrate shown in FIG. 1 along line A-A;
fig. 4 is a schematic partial structure of a first conductive layer in a touch substrate according to an embodiment of the present application;
fig. 5 is a schematic top view of another touch substrate according to an embodiment of the present disclosure;
FIG. 6 is a schematic top view of a touch substrate according to an embodiment of the disclosure;
fig. 7 is a schematic top view of still another touch substrate according to an embodiment of the disclosure;
fig. 8 is a flow chart of a method for manufacturing a touch substrate according to an embodiment of the present application;
fig. 9 is a schematic diagram of a frame structure of a touch display panel according to an embodiment of the present disclosure;
fig. 10 is a schematic diagram of a frame structure of a touch display device according to an embodiment of the present application.
Reference numerals:
1-a first conductive layer; 11-a first touch electrode; 111-a first touch electrode block; 112-a connection; 12-a second touch electrode; 121-a second touch electrode block; 111/1-first touch electrode block; a 111/2-second first touch electrode block;
2-an insulating layer;
3-a second conductive layer; 301-a first auxiliary electrode block; 302-a second auxiliary electrode block; 303-bridge; 301/1-first auxiliary electrode block; 301/2-second first auxiliary electrode block;
4-a substrate base;
a 5-touch signal line; 5/1-touch signal line number one; a 5/2-second touch signal line;
10-touch area; 10/1-a first touch sub-area; 10/2-second touch sub-area; 20-a sense signal input region;
x-a first direction; y-a second direction;
c1-a first induction capacitor; and C2-a first induction capacitor.
Detailed Description
Examples of embodiments of the present application are illustrated in the accompanying drawings, in which like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. Further, if detailed description of the known technology is not necessary for the illustrated features of the present application, it will be omitted. The embodiments described below by referring to the drawings are exemplary only for the purpose of illustrating the present application and are not to be construed as limiting the present application.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The inventor of the present application considers that the uniformity of the touch detection signal is poor due to the IR drop effect of the signal transmission line, and especially the problem of the uniformity of the touch detection signal caused by the IR drop is more obvious for a large-sized touch screen.
The application provides a touch substrate, a touch display panel and a touch display device, and aims to solve the technical problems in the prior art.
The following describes the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems in detail with specific embodiments.
The embodiment of the application provides a touch substrate, as shown in fig. 1 and fig. 2, where the touch substrate provided in the embodiment includes a first conductive layer 1, a second conductive layer 3, and an insulating layer 2 located between the first conductive layer 1 and the second conductive layer 3.
The first conductive layer 1 includes a plurality of first touch electrodes 11 extending in a first direction X and a plurality of second touch electrodes 12 extending in a second direction Y, the first touch electrodes 11 including a plurality of first touch electrode blocks 111 integrally connected, the second touch electrodes 12 including a plurality of second touch electrode blocks 121, the first touch electrode blocks 111 and the second touch electrode blocks 121 being insulated from each other, the first direction X intersecting the second direction Y.
The second conductive layer 3 includes a plurality of bridge portions 303, a plurality of first auxiliary electrode blocks 301, and a plurality of second auxiliary electrode blocks 302, the bridge portions 303 being electrically connected to two adjacent second touch electrode blocks 121 in the same second touch electrode 12, respectively, each first auxiliary electrode block 301 being electrically connected to one first touch electrode block 111, and each second auxiliary electrode block 302 being electrically connected to one second touch electrode block 121.
In the touch substrate provided in this embodiment, the first auxiliary electrode block 301 and the second auxiliary electrode block 302 electrically connected to the first touch electrode block 111 and the second touch electrode block 121 are formed on the second conductive layer 3, that is, the bridge layer, so that the first sensing capacitor C1 is formed between the first touch electrode block 111 and the second touch electrode block 121, and the second sensing capacitor C2 is also formed between the first auxiliary electrode block 301 and the second auxiliary electrode block 302, so that the overall sensing capacitor is increased, and the increase of the sensing capacitor is beneficial to reducing the influence of the IR drop on the sensing capacitor under the condition that the sensing capacitors caused by the IR drop are not uniform; meanwhile, the auxiliary electrode is manufactured by adopting the bridging layer, can be formed simultaneously with the bridging structure, and does not increase the process steps and the production cost.
Specifically, as shown in fig. 1, in the touch substrate provided in this embodiment, adjacent first touch electrode blocks 111 are electrically connected through a connection portion 112. Wherein the first touch electrode block 111 and the connection part 112 are integrally formed.
Specifically, as shown in fig. 2, the touch substrate provided in this embodiment is provided with a plurality of first vias 201 penetrating through the insulating layer 2, a plurality of second vias 202, and a plurality of third vias 203, the bridge portion 303 is electrically connected to two adjacent second touch electrode blocks 121 through the first vias 201, the first auxiliary electrode block 301 is electrically connected to the first touch electrode block 111 through the second vias 202, and the second auxiliary electrode block 302 is electrically connected to the second touch electrode block 202 through the third vias 203. In the manufacturing process, the first via 201, the second via 202 and the third via 203 can be manufactured at the same time, and the process steps and the production cost are not increased.
Alternatively, as shown in fig. 1 and 2, in the touch substrate provided in this embodiment, the orthographic projection of the first touch electrode block 111 on the plane of the insulating layer 2 covers the orthographic projection of the first auxiliary electrode block 301 on the plane of the insulating layer 2, and the orthographic projection of the second touch electrode block 121 on the plane of the insulating layer 2 covers the orthographic projection of the second auxiliary electrode block 302 on the plane of the insulating layer 2.
Optionally, the material of the first conductive layer 1 is a metal mesh, indium tin oxide or zinc aluminum oxide.
Optionally, the material of the second conductive layer 3 is metal, indium tin oxide or zinc aluminum oxide.
In a specific embodiment, the first and second touch electrode blocks 111 and 121 of the first conductive layer 1 are formed using a metal mesh, and the bridge portion 303, the first and second auxiliary electrode blocks 301 and 302 of the second conductive layer 3 are formed using a metal (e.g., metal copper, metal silver, metal aluminum, copper alloy, silver alloy, aluminum alloy, etc.). In another embodiment, the first and second touch electrode pads 111 and 121 of the first conductive layer 1 are formed using an indium tin oxide film, and the bridge portion 303, the first auxiliary electrode pad 301, and the second auxiliary electrode pad 302 of the second conductive layer 3 are formed using metal.
Optionally, as shown in fig. 3, the touch substrate provided in this embodiment further includes a substrate 4, where the substrate 4 is located on a side of the first conductive layer 1 away from the second conductive layer 3. Of course, the substrate 4 may also be located on a side of the second conductive layer 3 remote from the first conductive layer 1. That is, in the manufacturing, the first conductive layer 1 where the touch electrode is located may be manufactured first, or the second conductive layer 3 where the bridge portion 303 is located may be manufactured first.
Alternatively, as shown in fig. 4, in the touch substrate provided in this embodiment, the edge of the first touch electrode block 111 is configured to be wavy or folded, and the edge of the second touch electrode block 121 is configured to be wavy or folded that is adapted to the edge of the first touch electrode block 111, so that the distance between the edge of the first touch electrode block 111 and the edge of the adjacent second touch electrode block 121 is equal.
The edges of the touch electrodes are provided in a wave shape or a zigzag shape, so that the length of the opposite sides of the first touch electrode block 111 and the second touch electrode block 121 can be increased, which is advantageous for increasing the capacitance therebetween.
Alternatively, as shown in fig. 5, the touch substrate provided in this embodiment includes a touch area 10 and a sensing signal input area located at one side of the touch area 10, and the first touch electrode block 111 and the second touch electrode block 121 are located at the touch area 10. The first auxiliary electrode block 301 comprises a first auxiliary electrode block 301/1 and a second first auxiliary electrode block 301/2, and the second auxiliary electrode block 302 comprises a second auxiliary electrode block 302/1 and a second auxiliary electrode block 302/2; the distance between the first auxiliary electrode block 301/1 and the sensing signal input region 20 is greater than the distance between the second first auxiliary electrode block 301/2 and the sensing signal input region 20, and the area of the first auxiliary electrode block 301/1 is greater than the area of the second first auxiliary electrode block 301/2; the distance between the first auxiliary electrode block 302/1 and the sensing signal input region 20 is greater than the distance between the second auxiliary electrode block 302/2 and the sensing signal input region 20, and the area of the first auxiliary electrode block 302/1 is greater than the area of the second auxiliary electrode block 302/2.
As shown in fig. 5, the length of the first sensing signal line 5/1 connected to the first touch electrode block 111/1 is greater than the length of the second sensing signal line 5/2 connected to the second first touch electrode block 111/2, and due to IR drop, the capacitance between the first touch electrode block 111/1 and the second touch electrode block 121/1 is smaller than the capacitance between the second first touch electrode block 111/2 and the second touch electrode block 121/2, and the area of the first auxiliary electrode is designed to be greater than the area of the second auxiliary electrode, so that the capacitance between the first auxiliary electrode block 301/1 and the second auxiliary electrode block 302/1 is greater than the capacitance between the second first auxiliary electrode block 301/2 and the second auxiliary electrode block 302/2, and the compensation of the uneven sensing capacitance by the auxiliary electrode is realized, so that the sensing capacitance on the whole touch substrate tends to be consistent, and the touch control effect is improved.
As shown in fig. 6, in a specific embodiment, the touch area 10 includes a first touch sub-area 10/1 and a second touch sub-area 10/2, the first touch sub-area 10/1 includes at least two rows of first auxiliary electrode blocks 301 with equal areas and at least two rows of second auxiliary electrode blocks 302 with equal areas, and the second touch sub-area 10/2 includes at least two rows of first auxiliary electrode blocks 301 with equal areas and at least two rows of second auxiliary electrode blocks 302 with equal areas; the distance between the first touch sub-area 10/1 and the sensing signal input area 20 is greater than the distance between the second touch sub-area 10/2 and the sensing signal input area 20, the area of the first auxiliary electrode block 301 in the first touch sub-area 10/1 is greater than the area of the first auxiliary electrode block 301 in the second touch sub-area 10/2, and the area of the second auxiliary electrode block 302 in the first touch sub-area 10/1 is greater than the area of the second auxiliary electrode block 302 in the second touch sub-area 10/2.
It should be noted that, according to the size of the touch substrate, the touch area 10 may be divided into more sub-areas, so as to better implement compensation for the non-uniformity of the sensing capacitance.
In this embodiment, by dividing the touch area 10 into different sub-areas, the design difficulty of the mask of the second conductive layer 3 is reduced.
As shown in fig. 7, in another specific embodiment, the area of the first auxiliary electrode block 301 and the area of the second auxiliary electrode block 302 gradually increase in a direction in which the touch area 10 is away from the sensing signal input area. Since the lengths of the sensing signal lines 5 corresponding to each row of touch electrodes are different, the IR drop affects the sensing signal lines 5 sensing each row of touch electrodes differently. The area of the auxiliary electrode is designed in such a way, so that the sense capacitance of the whole touch substrate tends to be consistent as much as possible.
The touch substrate provided in this embodiment may be manufactured by taking the example of forming the second conductive layer 3 and then forming the first conductive layer 1 as an example, as shown in fig. 3 and 8, and the manufacturing method of the touch substrate provided in this embodiment includes:
s1: a first conductive material layer is formed on the base substrate 4 and patterned to form the first conductive layer 1 including the first touch electrode 11 and the second touch electrode, wherein the first touch electrode block 111, the second touch electrode block 121, and the first conductive layer 1 of the connection part 103. The first touch electrode 11 includes a plurality of first touch electrode blocks 111 integrally connected, the second touch electrode 12 includes a plurality of second touch electrode blocks 121, the first touch electrode blocks 111 and the second touch electrode blocks 121 are insulated from each other, and the first direction X intersects the second direction Y.
S2: an insulating layer 2 is formed on a side of the first conductive layer 1 remote from the substrate 4, and the insulating layer 2 is patterned to form a first via 201, a second via 202, and a third via 203 penetrating the insulating layer 2.
S3: a second conductive material layer is formed on a side of the insulating layer 2 remote from the first conductive layer 1, and is patterned to form a second conductive layer 3 including a first auxiliary electrode block 301, a second auxiliary electrode block 302, and a bridge portion 303.
In the manufacturing method of the touch substrate, the first auxiliary electrode block 301 and the second auxiliary electrode block 302 which are respectively electrically connected with the first touch electrode block 111 and the second touch electrode block 121 are formed on the bridging layer, so that the change of the sensing capacitance caused by the influence of the IR drop on the sensing signal line 5 is reduced; meanwhile, the auxiliary electrode is manufactured by adopting the bridging layer, can be formed simultaneously with the bridging structure, and does not increase the process steps and the production cost.
Based on the same inventive concept, the embodiment of the present application further provides a touch display panel, as shown in fig. 9, where the touch display template provided in this embodiment includes the touch substrate in the foregoing embodiment, and has the beneficial effects of the touch substrate in the foregoing embodiment, which is not described herein again.
As shown in fig. 9, the touch display panel provided in this embodiment further includes a display module, where the display module may be a liquid crystal display panel or an organic light emitting display panel. In an alternative embodiment, the touch substrate shares the same substrate 4 with the array substrate in the display module. In another alternative embodiment, a different substrate 4 is used for the touch substrate than for the array substrate in the display module.
Based on the same inventive concept, the embodiment of the present application further provides a touch display device, as shown in fig. 10, where the touch display device provided in this embodiment includes the touch display panel in the foregoing embodiment, and has the beneficial effects of the touch display panel in the foregoing embodiment, which are not described herein again.
As shown in fig. 10, the touch display device provided in this embodiment further includes a driving chip for driving the display module and the touch substrate.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
according to the touch substrate, the touch display panel and the touch display device, the first auxiliary electrode block and the second auxiliary electrode block which are respectively electrically connected with the first touch electrode block and the second touch electrode block are formed on the second conductive layer, namely the bridging layer, so that the first induction capacitance is formed between the first touch electrode block and the second touch electrode block, and the second induction capacitance is also formed between the first auxiliary electrode block and the second auxiliary electrode block, the whole induction capacitance is increased, and under the condition that the induction capacitance is uneven caused by IR drop, the increase of the induction capacitance is favorable for reducing the influence of IR drop on the induction capacitance; meanwhile, the auxiliary electrode is manufactured by adopting the bridging layer, can be formed simultaneously with the bridging structure, and does not increase the process steps and the production cost.
Those of skill in the art will appreciate that the various operations, methods, steps in the flow, actions, schemes, and alternatives discussed in the present application may be alternated, altered, combined, or eliminated. Further, other steps, means, or steps in a process having various operations, methods, or procedures discussed in this application may be alternated, altered, rearranged, split, combined, or eliminated. Further, steps, measures, schemes in the prior art with various operations, methods, flows disclosed in the present application may also be alternated, altered, rearranged, decomposed, combined, or deleted.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the flowcharts of the figures may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily being sequential, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for a person skilled in the art, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (10)
1. A touch substrate comprising a first conductive layer, a second conductive layer, and an insulating layer between the first conductive layer and the second conductive layer;
the first conductive layer comprises a plurality of first touch electrodes extending along a first direction and a plurality of second touch electrodes extending along a second direction, the first touch electrodes comprise a plurality of first touch electrode blocks connected into a whole, the second touch electrodes comprise a plurality of second touch electrode blocks, the first touch electrodes and the second touch electrodes are insulated from each other, and the first direction and the second direction are intersected;
the second conductive layer comprises a plurality of bridging parts, a plurality of first auxiliary electrode blocks and a plurality of second auxiliary electrode blocks, wherein the bridging parts are respectively and electrically connected with two adjacent second touch electrode blocks in the same second touch electrode, each first auxiliary electrode block is electrically connected with one first touch electrode block, and each second auxiliary electrode block is electrically connected with one second touch electrode block.
2. The touch substrate according to claim 1, comprising a touch area and a sensing signal input area located at one side of the touch area, the first touch electrode block and the second touch electrode block being located at the touch area;
the first auxiliary electrode comprises a first auxiliary electrode block and a second auxiliary electrode block, and the second auxiliary electrode comprises a first second auxiliary electrode block and a second auxiliary electrode block;
the distance between the first auxiliary electrode block and the sensing signal input area is larger than the distance between the second auxiliary electrode block and the sensing signal input area, and the area of the first auxiliary electrode block is larger than the area of the second auxiliary electrode block;
the distance between the first second auxiliary electrode block and the sensing signal input area is greater than the distance between the second auxiliary electrode block and the sensing signal input area, and the area of the first second auxiliary electrode block is greater than the area of the second auxiliary electrode block.
3. The touch substrate of claim 2, wherein the touch area comprises a first touch sub-area comprising at least two rows of equal area first auxiliary electrode blocks and at least two rows of equal area second auxiliary electrode blocks and a second touch sub-area comprising at least two rows of equal area first auxiliary electrode blocks and at least two rows of equal area second auxiliary electrode blocks;
the distance between the first touch sub-area and the sensing signal input area is greater than the distance between the second touch sub-area and the sensing signal input area, the area of the first auxiliary electrode block in the first touch sub-area is greater than the area of the first auxiliary electrode block in the second touch sub-area, and the area of the second auxiliary electrode block in the first touch sub-area is greater than the area of the second auxiliary electrode block in the second touch sub-area.
4. The touch substrate according to claim 2, wherein an area of the first auxiliary electrode block gradually increases and an area of the second auxiliary electrode block gradually increases in a direction in which the touch region is away from the sensing signal input region.
5. The touch substrate of any one of claims 1-4, wherein an edge of the first touch electrode pad is configured as a wavy or zig-zag shape and an edge of the second touch electrode pad is configured as a wavy or zig-zag shape that conforms to the edge of the first touch electrode pad such that the edge of the first touch electrode pad is equidistant from an edge of an adjacent second touch electrode pad.
6. The touch substrate of claim 5, wherein the material of the first conductive layer is a metal mesh, indium tin oxide, or zinc aluminum oxide.
7. The touch substrate of claim 5, wherein the material of the second conductive layer is metal, indium tin oxide, or zinc aluminum oxide.
8. The touch substrate of claim 5, wherein the orthographic projection of the first touch electrode block on the plane of the insulating layer covers the orthographic projection of the first auxiliary electrode block on the plane of the insulating layer, and wherein the orthographic projection of the second touch electrode block on the plane of the insulating layer covers the orthographic projection of the second auxiliary electrode block on the plane of the insulating layer.
9. A touch display panel comprising the touch substrate of any one of claims 1-8.
10. A touch display device comprising the touch display panel of claim 9.
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| CN202010955074.6A CN112099670B (en) | 2020-09-11 | 2020-09-11 | Touch substrate, touch display panel and touch display device |
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| CN202010955074.6A CN112099670B (en) | 2020-09-11 | 2020-09-11 | Touch substrate, touch display panel and touch display device |
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| CN112099670B true CN112099670B (en) | 2024-01-23 |
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| CN113608638B (en) * | 2021-08-17 | 2024-04-09 | 京东方科技集团股份有限公司 | Touch substrate, preparation method thereof and display device |
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| CN112099670A (en) | 2020-12-18 |
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