CN107168585B - Touch substrate and touch display panel - Google Patents
Touch substrate and touch display panel Download PDFInfo
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- CN107168585B CN107168585B CN201710536925.1A CN201710536925A CN107168585B CN 107168585 B CN107168585 B CN 107168585B CN 201710536925 A CN201710536925 A CN 201710536925A CN 107168585 B CN107168585 B CN 107168585B
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- touch
- area
- touch electrode
- electrode block
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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
Abstract
The invention provides a touch substrate and a touch display panel, belongs to the technical field of display, and can solve the problem that the whole capacity value of the existing touch display panel is not uniform. The touch substrate comprises a touch area and a wiring area, wherein the wiring area is positioned outside at least part of the side edge of the touch area; a signal wire adjacent to the touch area is arranged in the wiring area; the touch area is divided into an additional induction area adjacent to the wiring area and a normal induction area except the additional induction area, a plurality of touch electrode blocks are arranged in the additional induction area and the normal induction area, and the area of each touch electrode block in the additional induction area is smaller than that of each touch electrode block in the normal induction area.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a touch substrate and a touch display panel.
Background
With the development of technology, touch panels with touch control functions are increasingly used.
The capacitive touch panel is an important form of a touch panel, and in the existing touch display panel, parasitic capacitance is generated due to various metal routing arrangements on three sides except for a driving circuit side (an IC side), so that the capacitance of a touch electrode block on each side in the touch display panel is affected, the integral capacitance value of the touch display panel is not uniform, the product yield is affected, and meanwhile, the waste of materials is also caused.
Disclosure of Invention
The present invention is directed to at least one of the technical problems in the prior art, and provides a touch substrate with uniform capacitance of a touch electrode block.
The technical scheme adopted for solving the technical problem is that the touch substrate comprises a touch area and a wiring area, wherein the wiring area is positioned outside at least part of the side edge of the touch area;
a signal wire adjacent to the touch area is arranged in the wiring area;
the touch-control district is divided into and walks the adjacent additional induction zone in line district and the normal induction zone except that additional induction zone, just all be equipped with a plurality of touch-control electrode pieces in additional induction zone and the normal induction zone, wherein, the area of every touch-control electrode piece in the additional induction zone all is less than the area of every touch-control electrode piece in the normal induction zone.
Preferably, the additional sensing area positioned at one side of the touch area is provided with an outward direction which points to the adjacent wiring area and is vertical to the side of the touch area;
the size of the touch electrode blocks in the additional sensing area in the outward direction is smaller than that of the touch electrode blocks in the normal sensing area in the outward direction.
Further preferably, a dimension d of the touch electrode block in the additional sensing area in the outward direction and a dimension c of the touch electrode block in the normal sensing area in the outward direction satisfy:
d＝(0.5～0.8)c。
preferably, the routing area is at least located outside the data output side of the touch area.
Further preferably, the routing area is also located outside two adjacent sides of the touch area and the data output side.
Preferably, the additional sensing area comprises a row of the touch electrode blocks.
Preferably, the touch electrode block is formed of a transparent conductive material.
Preferably, the touch electrode block is a self-contained touch electrode block.
Preferably, the touch substrate is also a display substrate, and the touch electrode blocks share a common electrode.
Another technical solution to solve the technical problem of the present invention is a touch display panel including any one of the touch substrates described above.
The touch substrate comprises a touch area and a wiring area, wherein the touch area comprises an additional induction area and a normal induction area, and is provided with a plurality of touch electrode blocks, the area of each touch electrode block in the additional induction area is smaller than that of each touch electrode block in the normal induction area, so that the capacitance of each touch electrode block in the additional induction area is smaller than that of each touch electrode block in the normal induction area, and further, when the touch substrate works, the capacitance of each touch electrode block in the additional induction area is increased to the same capacitance as that of the touch electrode block in the normal induction area under the influence of the additional capacitance in the wiring area, and the capacitance values of the touch electrode blocks on the touch substrate are uniform under the condition of not influencing the touch function.
Drawings
Fig. 1 is a schematic structural diagram of a touch substrate according to an embodiment of the invention;
wherein the reference numbers are: 1. a touch area; 11. a normal sensing zone; 12. an additional sensing area; 2. a wiring area; 3. a signal line; 4. and touch electrode blocks.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1, the present embodiment provides a touch substrate, which includes a touch area 1 and a routing area 2 located outside at least a portion of a side of the touch area 1; a signal wire 3 adjacent to the touch area 1 is arranged in the wiring area 2; the touch area 1 is divided into an additional induction area 12 adjacent to the routing area 2 and a normal induction area 11 except the additional induction area 12, and a plurality of touch electrode blocks 4 are arranged in the additional induction area 12 and the normal induction area 11, wherein the area of each touch electrode block 4 in the additional induction area 12 is smaller than that of each touch electrode block 4 in the normal induction area 11.
The touch substrate has a touch area 1 for implementing a touch function, and many signal lines 3 (e.g., ground lines GND, green signal lines DG, etc.) in the touch substrate cannot be directly disposed in the touch area 1, but are disposed in a routing area 2 located outside the touch area 1, and some signal lines 3 in the routing area 2 are adjacent to the touch area 1. A plurality of touch electrode blocks 4 are arranged in a touch area 1 (comprising an additional induction area 12 and a normal induction area 11) of the touch substrate, and when the touch substrate works, the capacitance of each touch electrode block 4 changes according to the touch of a human finger, so that the specific position of the finger is judged according to the capacitance change of each touch electrode block 4. In the prior art, since the signal lines 3 are disposed in the routing area 2 on the touch substrate, when the touch substrate is in operation, the signal lines 3 in the routing area 2 generate various additional capacitances (e.g., parasitic capacitances, inductive capacitances, etc.), so as to affect the capacitances of the touch electrode blocks 4 in a portion of the touch substrate (i.e., the additional inductive area 12) adjacent to the routing area 2, so that the capacitances of the touch electrode blocks 4 in the additional inductive area 12 are greater than the capacitances of the touch electrode blocks 4 in the normal inductive area 11, thereby causing non-uniform capacitance values in the touch area 1.
Therefore, in the embodiment, the area of each touch electrode block 4 in the additional sensing area 12 is reduced to be smaller than the area of each touch electrode block 4 in the normal sensing area 11, so as to reduce the capacitance of each touch electrode block 4 in the additional sensing area 12, and further, when the touch substrate works, the capacitance of each touch electrode block 4 in the additional sensing area 12 is affected by the additional capacitance of the routing area 2 and is increased to the same capacitance as the touch electrode block 4 in the normal sensing area 11, thereby achieving the same touch effect. It can be understood that there are various ways to reduce the capacitance of the touch electrode block 4, such as changing the sensing medium, and so on, which are not described herein again.
Preferably, the touch electrode blocks 4 in the additional sensing area 12 and the normal sensing area 11 are uniformly arranged in an array, so as to facilitate touch identification.
Preferably, the additional sensing area 12 located at one side of the touch area 1 has an outward direction pointing to the routing area 2 adjacent thereto and perpendicular to the side of the touch area 1; the size of the touch electrode pad 4 in the additional sensing area 12 in the outward direction is smaller than the size of the touch electrode pad 4 in the normal sensing area 11 in the outward direction.
The touch area 1 has a plurality of side edges, and the additional sensing area 12 near any one of the side edges has an outward direction (as indicated by an arrow in fig. 1) perpendicular to the side edge.
Specifically, as shown in fig. 1, in this embodiment, the size of the touch electrode block 4 in the additional sensing area 12 in the outward direction is smaller than the size of the touch electrode block 4 in the normal sensing area 11 in the outward direction, so that the area of the touch electrode block 4 in the additional sensing area 12 is smaller than the area of the touch electrode block 4 in the normal sensing area 11.
The reason for this is that the size of the touch electrode blocks 4 in the additional sensing area 12 is reduced in the outward direction, and the size of the touch electrode blocks 4 in the normal sensing area 11 is uniformly increased in the outward direction at the same time, so that the touch electrode blocks 4 can still be distributed over the whole touch area 1, and the same touch effect can be achieved without changing the number of the touch electrode blocks 4 in the additional sensing area 12 and the size of the gap between the touch electrode blocks 4.
For example, 32 rows of touch electrode blocks 4 are arranged parallel to the data output end side (DO side), wherein the row closest to the DO side belongs to the additional sensing area 12, and then the dimension b of the touch area 1 in the outward direction, the dimension d of the touch electrode blocks 4 in the additional sensing area 12 in the outward direction, and the dimension c of the touch electrode blocks 4 in the normal sensing area 11 in the outward direction are set to satisfy b =31 + c + d (no consideration is given to the gap between the touch electrode blocks 4), so that the touch area 1 is covered by the 32 rows of touch electrode blocks 4 in the outward direction.
If the area of the touch electrode blocks 4 in the additional sensing area 12 is reduced by changing the size in other directions, the touch electrode blocks 4 in the touch area 1 may not be completely covered, or the number of the touch electrode blocks 4 needs to be increased to ensure the touch effect. It goes without saying that this increases the complexity of the touch substrate (e.g. the layout of the read signal lines 3).
Further preferably, the dimension d of the touch electrode block 4 in the outward direction in the additional sensing area 12 and the dimension c of the touch electrode block 4 in the outward direction in the normal sensing area 11 satisfy: d = (0.5 to 0.8) c.
It can be understood that, in order to make the capacitance values of the touch electrode blocks 4 on the touch substrate uniform during operation, the relationship between the capacitance of the touch electrode blocks 4 in the additional sensing area 12 and the capacitance of the touch electrode blocks 4 in the normal sensing area 11 is related to the additional capacitance of the routing area 2. In this embodiment, the influence of the additional capacitance on the capacitance of the touch electrode block 4 in the sensing region is measured by using the existing touch substrate, and when the dimension d of the touch electrode block 4 in the additional sensing region 12 in the outward direction and the dimension c of the touch electrode block 4 in the normal sensing region 11 in the outward direction satisfy: d = (0.5 to 0.8) c, the capacitance uniformity of the touch electrode block 4 on the touch substrate is good. Of course, according to the specification and the actual requirement of the touch substrate, the relationship between the dimension d of the touch electrode block 4 in the outward direction in the additional sensing area 12 and the dimension c of the touch electrode block 4 in the outward direction in the normal sensing area 11 can be adjusted correspondingly.
Preferably, the touch electrode block 4 is a self-contained touch electrode block 4. The capacitive touch electrode blocks 4 are arranged on the touch substrate in the same layer and are independent of each other, work is carried out based on the control of the driving circuit IC, when a finger presses, the capacitance of the capacitive touch electrode blocks 4 changes, and the position of the finger can be judged according to the position of the touch electrode block 4 with the changed capacitance.
Preferably, the wiring area 2 is at least located outside the data output side of the touch area 1.
The data output side (DO side) refers to a side of the touch substrate opposite to the driver circuit IC.
As shown in fig. 1, the signal lines 3 in the routing area 2 of the touch substrate are densely arranged on the DO side (lower side in the figure) of the touch area 1, so that the additional capacitance generated by the signal lines has a large influence on the additional sensing area 12 close to the DO side, which is likely to cause uneven capacitance of the touch substrate and uniform capacitance of the touch electrode blocks 4 on the touch substrate. Preferably, the outward direction of the additional sensing area 12 near the DO side is parallel to the arrangement direction of the data lines (not shown).
Preferably, the wiring area 2 is also located outside two adjacent sides of the touch area 1 and the data output side.
The signal lines 3 in the routing area 2 of the touch substrate are also arranged at two sides of the touch area 1 adjacent to the DO side, and the generated additional capacitance affects the additional sensing areas 12 near the two sides (left and right sides in the figure) adjacent to the DO side, so that the capacitance of the touch substrate is not uniform, and the additional sensing areas 12 can be arranged at the two sides adjacent to the DO side.
It should be understood that the above additional sensing regions 12 at different positions have different outward directions, and therefore the shrinking directions of the touch pads 4 in them are different. For the touch electrode blocks 4 (the touch electrode blocks 4 at the lower left corner and the lower right corner in fig. 1) adjacent to the wiring area 2 in two different directions, the sizes of the touch electrode blocks can be shrunk in the two directions.
Preferably, the additional sensing area 12 includes a row of touch electrode blocks 4.
The parasitic capacitance generated in the routing area 2 usually affects the capacitance of the touch electrode block 4 closest to the routing area, and therefore, in this embodiment, the additional sensing area 12 includes a row of touch electrode blocks 4.
Preferably, the touch electrode block 4 is formed of a transparent conductive material. Specifically, the transparent conductive material is Indium Tin Oxide (ITO).
Preferably, the touch substrate is also a display substrate, and the touch electrode block 4 is shared as a common electrode. The touch substrate can be a display substrate, and can realize touch and display functions in a real-time manner. The touch electrode block 4 is commonly used as a common electrode, that is, the common voltage signal is applied to the touch electrode block 4 in the display stage, and the touch scanning signal is applied to the touch electrode block 4 in the touch stage, so that the production cost is saved, and the thickness of the touch substrate is not increased.
The touch substrate provided by this embodiment includes a touch area 1 and a routing area 2, where the touch area 1 includes an additional sensing area 12 and a normal sensing area 11, and each of the additional sensing area 12 and the normal sensing area 11 is provided with a plurality of touch electrode blocks 4, where the area of each touch electrode block 4 in the additional sensing area 12 is smaller than the area of each touch electrode block 4 in the normal sensing area 11, so that the capacitance of each touch electrode block 4 in the additional sensing area 12 is smaller than the capacitance of each touch electrode block 4 in the normal sensing area 11, and further when the touch substrate works, the capacitance of each touch electrode block 4 in the additional sensing area 12 is affected by the additional capacitance of the routing area 2 and is increased to the same capacitance as the touch electrode block 4 in the normal sensing area 11, so that the capacitance values of the touch electrode blocks 4 on the touch substrate are uniform without affecting the touch function.
Example 2:
the present embodiment provides a touch display panel, including the touch substrate in embodiment 1.
The touch display panel is preferably a self-contained In-CELL (In-CELL) touch panel.
In the touch display panel provided by this embodiment, the area of each touch electrode block in the additional sensing area is smaller than the area of each touch electrode block in the normal sensing area, so that the capacitance of each touch electrode block in the additional sensing area is smaller than the capacitance of each touch electrode block in the normal sensing area, and further when the touch substrate works, the capacitance of each touch electrode block in the additional sensing area is affected by the additional capacitance in the trace area and is increased to the same capacitance as the touch electrode blocks in the normal sensing area, so that under the condition that the touch function is not affected, the capacitance values of the touch electrode blocks on the touch substrate are uniform, and the yield of the touch display panel is improved.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. A touch substrate is characterized by comprising a touch area and a wiring area positioned outside at least part of the side edge of the touch area;
a signal wire adjacent to the touch area is arranged in the wiring area;
the touch area is divided into an additional induction area adjacent to the wiring area and a normal induction area except the additional induction area, and a plurality of touch electrode blocks are arranged in the additional induction area and the normal induction area, wherein the area of each touch electrode block in the additional induction area is smaller than that of each touch electrode block in the normal induction area, so that the capacitance of each touch electrode block in the additional induction area is smaller than that of each touch electrode block in the normal induction area, and the capacitance of each touch electrode block in the additional induction area is influenced by the additional capacitance of the wiring area and is increased to be the same as that of the touch electrode blocks in the normal induction area;
the additional induction area positioned at one side of the touch area is provided with an outward direction which points to the adjacent wiring area and is vertical to the side of the touch area;
the size of the touch electrode block in the additional induction area in the outward direction is smaller than that of the touch electrode block in the normal induction area in the outward direction;
the size d of the touch electrode block in the additional induction area in the outward direction and the size c of the touch electrode block in the normal induction area in the outward direction meet the following conditions:
d=(0.5~0.8)c。
2. the touch substrate of claim 1,
the wiring area is at least positioned outside the data output side of the touch area.
3. The touch substrate of claim 2,
the wiring area is also positioned outside two adjacent sides of the touch area and the data output side.
4. The touch substrate of claim 1,
the additional induction area comprises a row of touch electrode blocks.
5. The touch substrate of claim 1,
the touch electrode block is formed of a transparent conductive material.
6. The touch substrate of claim 1,
the touch electrode block is a self-contained touch electrode block.
7. The touch substrate of claim 1,
the touch substrate is also a display substrate, and the touch electrode blocks are shared as common electrodes.
8. A touch display panel comprising the touch substrate according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710536925.1A CN107168585B (en) | 2017-07-04 | 2017-07-04 | Touch substrate and touch display panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710536925.1A CN107168585B (en) | 2017-07-04 | 2017-07-04 | Touch substrate and touch display panel |
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| CN107168585A CN107168585A (en) | 2017-09-15 |
| CN107168585B true CN107168585B (en) | 2023-01-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107678596B (en) * | 2017-10-11 | 2020-12-04 | 京东方科技集团股份有限公司 | Touch substrate mother board, touch display screen and manufacturing method of touch display panel |
| CN107783333A (en) * | 2017-10-27 | 2018-03-09 | 广东欧珀移动通信有限公司 | Array base palte, display panel and electronic equipment |
| CN108563351A (en) * | 2018-01-04 | 2018-09-21 | 京东方科技集团股份有限公司 | Touch base plate and touch device |
| TWI798631B (en) * | 2021-01-29 | 2023-04-11 | 翊登光電科技股份有限公司 | Touch control light adjustable device |
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