CN109062461B - Touch panel - Google Patents
Touch panel Download PDFInfo
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- CN109062461B CN109062461B CN201811212450.1A CN201811212450A CN109062461B CN 109062461 B CN109062461 B CN 109062461B CN 201811212450 A CN201811212450 A CN 201811212450A CN 109062461 B CN109062461 B CN 109062461B
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- touch
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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
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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
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- 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 application provides a touch panel, touch panel includes a touch-control area, be provided with metal grid structure on the touch-control area, metal grid structure includes touch-control electrode and dummy unit, touch-control electrode includes a plurality of unit grids of interconnect, dummy unit includes at least one first circuit, at least one second circuit and the crossing that first circuit and second circuit intersected formation, dummy unit sets up in unit grid, have the clearance distance between dummy unit and the unit grid, and be provided with dummy unit in at least some unit grids. The grid-shaped touch electrode covers the whole touch area, so that the distribution of capacitance is uniform; the dummy units are arranged in the unit grids of the touch electrode, so that the dummy units are distributed, and the influence of short circuit of the touch electrode can be effectively reduced.
Description
Technical Field
The present disclosure relates to touch technologies, and particularly to a touch panel.
Background
With the development of touch technology, touch panel technology is applied to the display field, such as touch display devices, e.g., mobile phones, IPADs, touch display screens, etc.
The touch panel is arranged in the touch display device and comprises a substrate, grid-shaped driving electrodes and grid-shaped sensing electrodes, a first grid-shaped filling body and a second grid-shaped filling body, wherein the grid-shaped driving electrodes and the grid-shaped sensing electrodes are arranged on the substrate, and the first grid-shaped filling body and the second grid-shaped filling body are arranged between the driving electrodes at intervals;
the grid-shaped driving electrode and the first grid-shaped filling body, and the grid-shaped sensing electrode and the second grid-shaped filling body form a metal grid structure.
In the metal grid structure, as shown in fig. 1, since the electrode 1 ' (driving electrode or sensing electrode) and the filler 2 ' (first grid filler or second grid filler) are alternately disposed apart, the electrode 1 ' does not completely cover the touch area, resulting in uneven capacitance distribution and deviation of the scribe line, especially the edge position; and when the touch electrode is short-circuited, the local electrode signal is increased greatly, which causes a bad phenomenon.
Therefore, it is desirable to provide a touch panel to solve the above technical problems.
Disclosure of Invention
The embodiment of the application provides a touch panel, which aims to solve the problems that electrodes in a metal grid structure of the existing touch panel do not completely cover a touch area, so that the capacitance distribution is uneven, scribing has deviation, and particularly the edge position exists; and when the touch electrode is short-circuited, the local electrode signal is increased greatly, which causes a problem of poor performance.
The embodiment of the application provides a touch panel, it includes the base plate and sets up touch-control area on the base plate, including metal grid structure on the touch-control area, metal grid structure includes:
a plurality of unit meshes connected to each other; and
a dummy cell including at least one first line formed along a first direction, at least one second line formed along a second direction, and an intersection formed by the intersection of the first line and the second line;
the dummy units are arranged in the unit grids, gap distances are reserved between the dummy units and the unit grids, and the dummy units are arranged in at least part of the unit grids.
In the touch panel of the present application, the dummy unit includes one of the first lines, one of the second lines, and a first intersection formed by intersecting the first line and the second line.
In the touch panel of the present application, the plurality of unit grids are connected to each other to form a plurality of second intersections, the first intersections and the second intersections are arranged in a matrix form, and distances from the first intersections to the adjacent second intersections are equal.
In the touch panel of the present application, the unit grid is a parallelogram.
In the touch panel of the present application, the touch area includes a middle area located in a middle portion and an edge area located around the middle area, wherein a density of the unit grids located in the edge area is greater than a density of the unit grids located in the middle area.
In the touch panel of the present application, at least a part of the cell grids is provided with a plurality of the dummy cells.
In the touch panel of the present application, the dummy cell includes at least two intersections.
In the touch panel of the present application, the touch area includes a middle area located in a middle portion and an edge area located around the middle area, wherein the number of intersections of the dummy cells in the cell grid of the edge area is different from the number of intersections of the dummy cells in the cell grid of the middle area.
In the touch panel of the present application, the number of intersections of the dummy cells in the cell grid of the edge region is smaller than the number of intersections of the dummy cells in the cell grid of the middle region.
In the touch panel of the present application, a dummy cell is disposed in each cell grid of the middle area.
In the touch panel of the present application, the edge region includes two first edge portions located at the middle region short edge end and two second edge portions located at the middle region long edge end, and the width of the first edge portion and the width of the second edge portion are both less than 10 millimeters and greater than 0 millimeter.
In the touch panel of the present application, the dummy unit includes one first line, two second lines arranged in parallel, and a cross point formed by intersecting the first line and the two second lines.
In the touch panel of the present application, the dummy unit includes two parallel first lines and two parallel second lines and a cross point formed by intersecting the first lines and the second lines.
In the entire touch area in the prior art, the most peripheral touch channel is different from other touch channels in terms of the environment, that is, the most peripheral touch channel has only one adjacent touch channel, so that the signal amount of the area (edge area) where the most peripheral touch channel is located is relatively small, and the width of one touch channel is 6-7 mm, so that the width of the first edge portion and the width of the second edge portion are both set to be less than 10 mm and greater than 0 mm, so that a sufficient range is provided to improve the signal amount of the edge area, so that the signal amount of the edge area is consistent with the signal amount of the middle area.
In the embodiment of the touch panel of the present application, when the signal amount of the edge area is low, the dummy cells in the edge area may be connected to the touch electrode, so as to change the dummy cells in the edge area into the cell grids, thereby increasing the grid density (percentage of the number of grids belonging to the cell grids in a unit area) of the cell grids, and further increasing the signal amount.
Compared with the touch panel in the prior art, the touch panel of the application enables the distribution of the capacitance to be uniform by covering the metal grid structure on the whole touch area; in addition, the dummy units are arranged in the unit grids, so that the dummy units are distributed, and the influence of short circuit of the touch electrode can be effectively reduced; the problems that electrodes in a metal grid structure of an existing touch panel do not completely cover a touch area, so that capacitance distribution is uneven, scribing is deviated, and particularly the edge position is caused are solved; and when the touch electrode is short-circuited, the local electrode signal is increased greatly, which causes a problem of poor performance.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments are briefly described below. The drawings in the following description are only some embodiments of the present application, and it will be obvious to those skilled in the art that other drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a metal grid structure of a touch panel in the prior art;
fig. 2 is a schematic structural diagram of a touch panel according to a first embodiment of the present disclosure;
FIG. 3 is an enlarged view of A in FIG. 2;
fig. 4 is a schematic structural diagram of a middle region and an edge region of a second embodiment of a touch panel according to the present application.
Detailed Description
Refer to the drawings wherein like reference numbers refer to like elements throughout. The following description is based on illustrated embodiments of the application and should not be taken as limiting the application with respect to other embodiments that are not detailed herein.
Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of a touch panel according to a first embodiment of the present application; fig. 3 is an enlarged view of a in fig. 2. In the first embodiment of the touch panel of the present application, the touch panel 100 includes a substrate 13 and a touch area a disposed on the substrate 13. The touch area a includes a metal mesh structure 10. The metal mesh structure 10 includes a plurality of cell meshes 11 and dummy cells 12.
The plurality of unit cells 11 are connected to each other. The dummy cell 12 includes at least one first line 121 formed along the first direction, at least one second line 122 formed along the second direction, and a crossing point 123 formed by the intersection of the first line 121 and the second line 122.
The dummy cells 12 are disposed within the cell grid 11 with a gap distance between the dummy cells 12 and four sides of the cell grid 11. Dummy cells 12 are provided in at least a part of the cell grids 11.
It should be noted that the touch panel 100 can be applied to a mobile phone, a tablet computer, a touch display screen, and the like, and the embodiment takes the mobile phone as an example for illustration, but is not limited thereto.
The metal mesh structure is a part of a touch electrode, which may be a driving electrode or a sensing electrode in a touch panel. The dummy unit is used for keeping the grid-shaped touch electrodes in each area consistent, facilitating optical debugging and modifying the grid density (percentage of the number of grids belonging to the unit grid in unit area) of the unit grid.
The first direction is a direction orthogonal to the second direction, and the first direction and the second direction are perpendicular to each other.
The touch panel of the present embodiment makes the distribution of capacitance uniform by covering the cell grid 11 of the metal grid structure 10 over the entire touch area a; in addition, the dummy units 12 are arranged in the cell grids 11, so that the dummy units 12 are distributed, and the influence caused by short circuit of the touch electrode can be effectively reduced.
In addition, in the whole touch area, the touch channel of the edge area of the touch electrode has only one adjacent touch channel, and the other touch channels have two adjacent touch channels, so that the signal amount of the edge area of the touch area is lower than that of the inner area, therefore, when the cell grid 11 is laid in the whole touch area, and the dummy unit 12 is arranged in the cell grid 11, the grid density of the cell grid 11 of the edge area can be adjusted to be consistent with that of the inner area, for example, when the signal of the edge area is lower, part or all of the dummy unit 12 in the area is connected with the cell grid, so that the dummy unit 12 is changed into the cell grid 11, the density of the cell grid 11 in the area is further improved, and the signal amount is increased.
Alternatively, the unit cell 11 is a parallelogram. Preferably, the unit cell 11 has a regular diamond shape. In the present first preferred embodiment, the unit cell 11 has a regular diamond shape.
In the first embodiment, the dummy cells 12 include one first line 121, one second line 122, and a first intersection 123 formed by the intersection of the first line 121 and the second line 122, that is, the dummy cells are cross-shaped, that is, there is only one dummy cell 12 in a quadrangle surrounded by four second intersections 112 adjacent to the cell grid 11, and there is only one second intersection 112 of the cell grid 11 in a quadrangle surrounded by the first intersections 123 of four adjacent dummy cells 12.
In addition, the dummy cell 12 may include at least two intersections. For example, the dummy unit includes a first line and two second lines arranged in parallel, and a crossing point formed by the first line and the two second lines crossing each other, that is, the dummy unit is "". Or the dummy unit comprises two first lines arranged in parallel and two second lines arranged in parallel, and a cross point formed by the intersection of the first lines and the second lines, namely the dummy unit is in a shape of # in shape.
In the first embodiment, the length of the first line 121 is equal to the length of the second line 122, the first line 121 is perpendicular to the second line 122, and the distances from the first intersection point 123 to the four sides of the cell grid 11 are equal.
With such an arrangement, on one hand, when the touch electrode needs to be modified, the grid density of the touch electrode unit grid 11 can be adjusted to the minimum extent; on the other hand, in the production process, when the touch electrode is short-circuited and the dummy cell 12 is small, the influence of short circuit between a single dummy cell 12 and the cell grid 11 is not too great, and the panel can still be used.
In the present first embodiment, a plurality of cell grids are connected to each other to form a plurality of second intersections 112. The first intersections 123 and the second intersections 112 are arranged in a matrix form, and distances from adjacent first intersections 123 to adjacent second intersections 112 are equal. With this arrangement, the uniformity of the cell grid 11 density and the uniformity of the dummy cells 12 are improved.
In addition, the touch area a includes a middle area a1 located in the middle portion and an edge area a2 located around the middle area a 1. Wherein the density of the unit cells 11 located at the edge region a2 is greater than the density of the unit cells 11 located at the middle region a 1.
Since the touch channel of the touch edge area a2 has only one adjacent touch channel in the touch area a of the touch panel 100, and the other touch channels have two adjacent touch channels, the signal amount of the touch area edge area a2 is lower than that of the inner area (middle area a1), so when the cell grid 11 is laid over the entire touch area a, and the dummy cells 12 are disposed in the cell grid, the grid density of the cell grid 11 of the edge area a2 can be adjusted to be consistent with the signal of the inner area a 1.
For example, when the signal of the edge area a2 is low, part or all of the dummy cells 12 in the area are connected to the cell grid 11, so that the dummy cells 12 are changed into the lines of the cell grid 11, and an original cell grid is divided into four smaller cell grids, thereby increasing the density of the cell grid 11 grid in the area, increasing the signal quantity, making the signal quantity of the edge area a2 consistent with the signal quantity of the middle area a1, achieving good homogenization of the front touch signal, and improving the performances such as linearity and precision.
In the present first embodiment, a plurality of dummy cells 12 are provided in at least part of the cell grid 11 in order to further adjust the density of the cell grid 11.
In the present first embodiment, the touch area a includes a middle area a1 located in a middle portion and an edge area a2 located around the middle area a1, wherein the number of intersections (first intersections) 123 of the dummy cells 12 within the cell grid 11 of the edge area a2 is different from the number of intersections (first intersections) 123 of the dummy cells 12 within the cell grid 11 of the middle area a 1. The density of the cell grid 11 is adjusted by adjusting the area ratio (the occupation ratio of the area of the dummy cell within the cell area) of the dummy cell 12 of the cell grid 11 of the middle area a1 and the dummy cell 12 of the cell grid 11 of the edge area a 2.
For example, in the metal mesh structure 10, the area of the cell 11 is constant, and in the whole mesh structure, by performing the disconnection process on a part of the cell and the adjacent cell, the disconnected part of the cell becomes the dummy cell 12, thereby reducing the cell density in the region. The broken dummy cell may or may not be continuously divided into several small dummy cells. For example, the broken dummy cells are "#" shaped and are divided into four "+" shaped dummy cells. However, in any configuration, the number of intersections of the dummy cell is the same, and four intersections are provided in the cell grid.
In the present embodiment, the number of intersections of the dummy cells 12 within the cell grid 11 of the edge region a2 is smaller than the number of intersections of the dummy cells 12 within the cell grid 11 of the middle region a 1. The arrangement makes the density of the cell grids 11 of the edge area a2 greater than that of the cell grids 11 of the middle area a1, and further increases the signal quantity of the edge area a2, so as to achieve the effect that the signal quantities of the edge area a2 and the middle area a1 are consistent. In the first embodiment, the dummy cell 12 is illustrated as a "+" shape.
In the present first embodiment, the number of intersections (first intersections) 123 of the dummy cells 12 within the cell grid 11 of the edge region a2 is smaller than the number of intersections (first intersections) 123 of the dummy cells 12 within the cell grid 11 of the middle region a 1. That is, the cell grid 11 of the middle area a1 is provided with one dummy cell 12, and the cell grid 11 of the edge area a2 is not provided with the dummy cell 12. Of course, if the cell grid 11 density of the middle area a1 needs to be further reduced, a plurality of dummy cells may be provided.
In addition, in the first embodiment, the dummy cells 12 are disposed in each cell grid 11 of the middle area a1, so that the dummy cells 12 are distributed, and the influence of short circuit of the touch electrodes can be effectively reduced.
In addition, the dummy cell 12 is not disposed in the cell grid 11 in the edge region a2 because the dummy cell in the cell grid 11 is modified to connect the cell grid 11, so that the line 11c is connected in the cell grid 11.
In the touch panel 100 of the present application, the edge region b2 includes two first edge portions located at the short side end of the middle region a1 and two second edge portions located at the long side end of the middle region a 1. The width of the first edge portion and the width of the second edge portion are both less than 10 mm and greater than 0 mm.
In addition, the distance between adjacent touch channels of the touch electrode is 6-8 mm, and in order to ensure that the outermost touch channel can be modified, the width of the first edge portion and the width of the second edge portion are both limited to be within a range of less than 10 mm and more than 0 mm.
Referring to fig. 4, in the second embodiment, the difference between the second embodiment and the first embodiment is: the cell grid 21 of the middle region a1 is provided with a plurality of dummy cells 22, and the cell grid 21 of the edge region a2 is provided with one dummy cell 22.
The cell grid 21 of the middle area a1 is provided with a plurality of dummy cells 22. At least one dummy cell 22 is disposed within the cell grid 21 of the edge region a2 such that the density of the cell grid 21 of the middle region a1 is less than the density of the cell grid 21 of the edge region a 2. Specifically, one dummy cell 22 is disposed in the cell grid 21 of the edge region a 2. Five dummy cells 22 are disposed within the cell grid 21 of the middle area a 1. Thereby enabling the signal quantity acquired by the edge region a2 to be consistent with the signal quantity acquired by the middle region a 1.
Therefore, when the touch area of the touch panel needs to be divided and arranged into different semaphore areas, a plurality of dummy units can be arranged in the area with smaller semaphore requirement.
Compared with the touch panel in the prior art, the touch panel of the application enables the distribution of the capacitance to be uniform by covering the grid-shaped touch electrode on the whole touch area;
in addition, the dummy units are arranged in the unit grids of the touch electrode, so that the dummy units are distributed, and the influence of short circuit of the touch electrode can be effectively reduced;
the problems that electrodes in a metal grid structure of an existing touch panel do not completely cover a touch area, so that capacitance distribution is uneven, scribing is deviated, and particularly the edge position is caused are solved; and when the touch electrode is short-circuited, the local electrode signal is increased greatly, which causes a problem of poor performance.
Although the disclosure has been shown and described with respect to one or more implementations, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. The present disclosure includes all such modifications and alterations, and is limited only by the scope of the appended claims. In addition, while a particular feature of the disclosure may have been disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of the other implementations as may be desired and advantageous for a given or particular application. Furthermore, to the extent that the terms "includes," has, "" contains, "or variants thereof are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term" comprising.
In summary, although the present application has been disclosed with the embodiments, the serial numbers before the embodiments, such as "first" and "second", are used for descriptive convenience only, and do not limit the sequence of the embodiments of the present application. Furthermore, the above-mentioned embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, therefore, the scope of the present application shall be defined by the appended claims.
Claims (5)
1. A touch panel comprises a substrate and a touch area arranged on the substrate, wherein the touch area comprises a metal grid structure, and the metal grid structure comprises:
a plurality of unit meshes connected to each other; and
a dummy cell including at least one first line formed along a first direction, at least one second line formed along a second direction, and an intersection formed by the intersection of the first line and the second line;
the dummy units are arranged in the unit grids, gap distances are reserved between the dummy units and the unit grids, and the dummy units are arranged in at least part of the unit grids;
the touch area comprises a middle area positioned in the middle part and an edge area positioned around the middle area, wherein the density of the unit grids positioned in the edge area is greater than that of the unit grids positioned in the middle area;
the cell grid of the middle area is provided with a plurality of the dummy cells, at least one dummy cell is arranged in the cell grid of the edge area, and the number of the intersection points of the dummy cells in the cell grid of the edge area is less than that of the intersection points of the dummy cells in the cell grid of the middle area.
2. The touch panel according to claim 1, wherein the dummy cell includes one of the first lines, one of the second lines, and a first intersection formed by intersection of the first line and the second line.
3. The touch panel of claim 2, wherein the cell grids are connected to form a plurality of second intersections, the first intersections and the second intersections are arranged in a matrix, and distances from the first intersection to the adjacent second intersections are equal.
4. The touch panel of claim 1, wherein the grid of cells is a parallelogram.
5. The touch panel of claim 1, wherein a dummy cell is disposed in each cell grid of the middle area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212450.1A CN109062461B (en) | 2018-10-18 | 2018-10-18 | Touch panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212450.1A CN109062461B (en) | 2018-10-18 | 2018-10-18 | Touch panel |
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| CN109062461A CN109062461A (en) | 2018-12-21 |
| CN109062461B true CN109062461B (en) | 2020-10-27 |
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| CN201811212450.1A Active CN109062461B (en) | 2018-10-18 | 2018-10-18 | Touch panel |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110647260B (en) * | 2019-09-27 | 2020-11-20 | 联想(北京)有限公司 | Touch structure, touch screen and electronic equipment |
| CN111399708A (en) * | 2020-04-07 | 2020-07-10 | 惠州易晖光电材料股份有限公司 | Electrode wiring structure of touch functional sheet and preparation method thereof |
| US11720215B2 (en) | 2020-08-06 | 2023-08-08 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Touch control structure, display panel, display apparatus, and method of fabricating touch control structure |
| TWI773207B (en) * | 2020-11-06 | 2022-08-01 | 友達光電股份有限公司 | Touch display device |
| US11620026B2 (en) | 2020-11-06 | 2023-04-04 | Au Optronics Corporation | Touch apparatus |
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| CN103384870A (en) * | 2011-02-18 | 2013-11-06 | 富士胶片株式会社 | Electroconductive sheet and touch panel |
| CN107765914A (en) * | 2017-10-11 | 2018-03-06 | 业成科技（成都）有限公司 | It is touch panel structure provided |
| CN108054193A (en) * | 2018-02-09 | 2018-05-18 | 武汉华星光电半导体显示技术有限公司 | Flexible display panels and flexible display apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8269744B2 (en) * | 2008-09-05 | 2012-09-18 | Mitsubishi Electric Corporation | Touch screen, touch panel and display device |
| CN107122077B (en) * | 2017-05-02 | 2020-06-02 | 上海天马微电子有限公司 | Touch display device |
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|---|---|---|---|---|
| CN103384870A (en) * | 2011-02-18 | 2013-11-06 | 富士胶片株式会社 | Electroconductive sheet and touch panel |
| CN107765914A (en) * | 2017-10-11 | 2018-03-06 | 业成科技（成都）有限公司 | It is touch panel structure provided |
| CN108054193A (en) * | 2018-02-09 | 2018-05-18 | 武汉华星光电半导体显示技术有限公司 | Flexible display panels and flexible display apparatus |
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