CN108897463B - Touch device and display device - Google Patents
Touch device and display device Download PDFInfo
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- CN108897463B CN108897463B CN201810739761.7A CN201810739761A CN108897463B CN 108897463 B CN108897463 B CN 108897463B CN 201810739761 A CN201810739761 A CN 201810739761A CN 108897463 B CN108897463 B CN 108897463B
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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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- 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
Abstract
The invention provides a touch device and a display device. The touch device comprises a first grid layer and a second grid layer, wherein the first grid layer is overlapped with the second grid layer corresponding to the second empty area graph in space corresponding to the first lead in the first touch graph and has a first overlapped point, and the second lead corresponding to the second touch area graph is cut off at the outer side of the first overlapped point to form independent overlapped parts in the second lead. In this way, even if the first conductive line in the first touch pattern and the second conductive line in the second vacant area pattern are shorted at the first overlapping point, the portion shorted with the first conductive line only includes the overlapping portion of the second conductive line, so that the adverse risk caused by the touch performance of the touch device can be effectively reduced.
Description
Technical Field
The present invention relates to the field of panel display technologies, and in particular, to a touch device and a display device.
Background
The touch screen is a simplest, convenient and natural man-machine interaction mode as a latest input device, gives a brand-new appearance to multimedia equipment, is a brand-new multimedia interaction device with great attraction, and is widely applied to electronic equipment such as computers, mobile phones and the like. With the development of the touch screen industry, the touch screen has been gradually developed from a single-point touch to a multi-point touch screen, and the multi-point touch screen has the greatest characteristic that the operation on the screen can be simultaneously realized by a plurality of fingers, so that the touch screen is more convenient and humanized. In view of the wide application prospect of touch screens, a touch device with excellent performance, high light transmittance and strong anti-interference capability is needed.
Because the metal grid technology is to construct a conductive metal grid on the substrate by a micromachining technology, the metal grid technology has the advantages of high conductivity, high light transmittance, good anti-interference capability and the like, and is currently applied to the manufacturing of touch devices. For example, current metal mesh touch devices generally include a first mesh layer, an insulating dielectric layer, and a second mesh layer stacked in sequence. The first grid layer and the second grid layer respectively comprise a plurality of grids which are formed by adopting conductive materials and are connected with each other, and the first grid layer and the second grid layer are isolated by the insulating medium layer. However, the conventional touch device often has a problem of failure of touch performance.
Disclosure of Invention
The invention aims to provide a touch device, which solves the problem that the performance of the touch device is adversely affected by short circuit easily generated on a first grid layer and a second grid layer in the conventional touch device.
To solve the above technical problem, the present invention provides a touch device, including:
the first grid layer is provided with a plurality of crossed first wires to form a plurality of first grids, and the first grids are divided to form a first touch control graph and a first vacant area graph;
the second grid layer is provided with a plurality of second crossed wires to form a plurality of second grids, and the second grids are divided to form a second touch control graph and a second vacant area graph; and the number of the first and second groups,
the insulating medium layer is positioned between the first grid layer and the second grid layer;
the first grid layer, the insulating medium layer and the second grid layer are sequentially superposed, the first touch control graph in the first grid layer and the second vacant area graph in the second grid layer are overlapped in space, the first lead in the first touch control graph and the second lead in the second vacant area graph are intersected in space to form a first overlapping point, and the second lead located on the periphery of the first overlapping point is in a cut-off state.
Optionally, the first conductive lines of the first grid layer and the second conductive lines of the second grid layer spatially intersect to define a plurality of virtual grids; and the size of the distance from the cut of the second conducting wire corresponding to the first overlapping point is smaller than the side length of the virtual grid.
Optionally, the first touch pattern forms a driving line pattern for receiving a touch voltage; the second touch control pattern forms an induction line pattern used for inducing touch control voltage.
Optionally, the first grid layer further includes a first defined area, and first wires in the first grid located in the first defined area are disconnected from each other, so that the plurality of first grids are divided by the first defined area into the first touch pattern and the first vacant area pattern, which are electrically insulated from each other; and the second grid layer further comprises a second defined area, wherein second wires in the second defined area in the second grid are disconnected from each other, so that the plurality of second grids are divided into the second touch control graph and the second vacant area graph which are electrically insulated from each other by the second defined area.
Optionally, the first grid layer and the second grid layer are both rectangular, the first defined area and the second defined area are located in diagonal areas of the rectangle, the plurality of first grids are divided into 2 symmetrical first touch patterns and 2 symmetrical first vacant area patterns by the first defined area, and the plurality of second grids are divided into 2 symmetrical second touch patterns and 2 symmetrical second vacant area patterns by the second defined area.
Optionally, the touch device is driven by a self capacitor or a mutual capacitor.
Optionally, the first conductive wire and the second conductive wire are made of metal to form a first metal mesh and a second metal mesh, respectively.
Optionally, the insulating dielectric layer is made of silicon oxide and/or photoresist.
Optionally, the second touch control pattern in the second grid layer and the first vacant area pattern in the first grid layer are spatially overlapped, and a second conducting line in the second touch control pattern and a first conducting line in the first vacant area pattern are spatially intersected to have a second overlapping point, and the first conducting line located at the periphery of the second overlapping point is in a truncated state.
Another object of the present invention is to provide a display device, which includes the touch device as described above.
In the touch device provided by the invention, the first grid layer is crossed with the second grid layer corresponding to the first lead of the first touch graph and the second grid layer is crossed with the second lead of the second vacant area graph, and the second lead corresponding to the second vacant area graph is cut off at the outer side of the first crossed point. That is, the overlapping portion of the second conductive line of the second mesh layer corresponding to the first overlapping point and the other portion of the second conductive line are disconnected from each other. As such, even if the first conductive lines and the second conductive lines are shorted at the first overlapping points (for example, short-circuited due to electrostatic breakdown), since the overlapping portions of the second conductive lines are separated from other portions, that is, the first conductive lines may only be connected to the overlapping portions having a smaller size, and may not be integrally connected to the second mesh having a larger area formed by the second conductive lines, the touch performance of the touch device may not be affected.
Drawings
Fig. 1a is a schematic structural diagram of a first grid layer of a conventional touch device;
FIG. 1b is a schematic structural diagram of a second grid layer of a conventional touch device;
fig. 1c is a schematic structural diagram of a conventional touch device after a first grid layer and a second grid layer are stacked;
FIG. 2a is a schematic structural diagram of a first grid layer of a touch device according to an embodiment of the invention;
FIG. 2b is a schematic structural diagram of a second grid layer of the touch device according to an embodiment of the invention;
fig. 2c is a schematic structural diagram of the touch device according to an embodiment of the invention after the first mesh layer and the second mesh layer are stacked;
FIG. 3 is a partially enlarged view of an aa' area of the touch device shown in FIG. 2c according to an embodiment of the invention;
fig. 4 is a partially enlarged view of a bb' area of the touch device shown in fig. 2c according to an embodiment of the invention.
Detailed Description
As described in the background, the conventional touch device often suffers from a touch failure problem, and the inventors found that the problem is caused by that large static electricity is easily generated between the first grid and the second grid, so that the static electricity is induced to break down the insulating medium layer between the first grid layer and the second grid layer, and the first grid layer and the second grid layer are short-circuited, which directly affects the touch performance of the touch device.
For example, fig. 1a is a schematic structural diagram of a first grid layer of a conventional touch device, fig. 1b is a schematic structural diagram of a second grid layer of the conventional touch device, and fig. 1c is a schematic structural diagram of the conventional touch device after the first grid layer and the second grid layer are stacked.
As shown in fig. 1a to 1c, the touch device includes a first mesh layer 10, an insulating medium layer (not shown), and a second mesh layer 20 stacked in sequence. Wherein the first mesh layer 10 has a plurality of intersecting first conductive lines 11 to form a plurality of first meshes. The second mesh layer 20 has a plurality of intersecting second conductive lines 21 to form a plurality of second meshes. When the first mesh layer 10, the insulating medium layer, and the second mesh layer 20 are stacked on each other, the first conductive lines 11 of the first mesh layer 10 and the second conductive lines 21 of the second mesh layer 20 spatially intersect to have an overlapping point P.
It should be noted that the insulating medium layer is not shown in fig. 1c for the convenience of understanding, however, it should be appreciated that an insulating medium layer is further disposed between the first mesh layer 10 and the second mesh layer 20 to electrically insulate the first mesh layer 10 and the second mesh layer 20. And, also only a partially overlapping point P is schematically indicated in fig. 1 c.
The inventors of the present invention found through research that the problem of electrostatic breakdown is highly likely to occur between the first mesh layer 10 and the second mesh layer 20, particularly at the position corresponding to the overlapping point P, so that the first conductive lines 11 of the first mesh layer 10 and the second conductive lines 21 of the second mesh layer 20 are electrically connected through the overlapping point P. However, since the first wires 11 form the first mesh, the second wires 21 form the second mesh, and the areas of the first mesh and the second mesh are both larger, when the first wires 11 and the second wires 21 are shorted, it means that the first wires 11 are shorted with the second mesh having a larger area, or the second wires 21 are shorted with the first mesh having a larger area. Therefore, the touch performance of the touch device is adversely affected.
Therefore, the invention provides a touch device, wherein a first lead corresponding to a first touch pattern in a first grid layer of the touch device and a second lead corresponding to a second vacant region pattern in a second grid layer of the touch device have a first overlapping point. Although at the position of the first overlapping point, the problem of short-circuiting the first and second conductive lines due to electrostatic breakdown is easily caused; however, in the technical solution of the present invention, by cutting the second conductive lines corresponding to the second empty area patterns from the outer side of the first overlapping point, even if electrostatic breakdown occurs at the position of the first overlapping point, the first conductive lines in the range of the first touch pattern are short-circuited with the second conductive lines in the range of the second empty area patterns, and the short-circuited range is limited to the position of the first overlapping point and does not spread to the peripheral second mesh, so that the adverse risk of electrostatic breakdown on the touch performance of the touch device can be effectively reduced.
The touch device and the display device according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Fig. 2a is a schematic structural diagram of a first grid layer of a touch device in an embodiment of the invention, fig. 2b is a schematic structural diagram of a second grid layer of the touch device in an embodiment of the invention, and fig. 2c is a schematic structural diagram of the touch device in an embodiment of the invention after the first grid layer and the second grid layer are mutually overlapped.
Referring to fig. 2a to 2c, the touch device includes:
a first grid layer 100 having a plurality of intersecting first wires 110 to form a plurality of first grids, and the plurality of first grids are divided to form a first touch pattern 100A and a first vacant region pattern 100B;
a second grid layer 200 having a plurality of intersecting second conductive lines 210 to form a plurality of second grids, and the plurality of second grids are divided to form a second touch pattern 200A and a second vacant region pattern 200B; the first touch pattern 100A of the first grid layer 100 is used to form a driving line pattern, for example, and the second touch pattern 200A of the second grid layer 200 is used to form a sensing line pattern, for example; of course, the first touch pattern 100A of the first grid layer 100 may also be used to form a sensing line pattern, and the second touch pattern 200A of the second grid layer 200 may be used to form a driving line pattern;
an insulating medium layer (not shown) is positioned between the first mesh layer 100 and the second mesh layer 200, thereby being used to realize the isolation of the first mesh layer 100 and the second mesh layer 200.
It is noted that the insulating medium layer is not shown in fig. 2c, however, it should be appreciated that an insulating medium layer is further provided between the first mesh layer 100 and the second mesh layer 200 to isolate the first mesh layer 100 and the second mesh layer 200. Furthermore, it should be appreciated that fig. 2 a-2 c only schematically show portions of the first and second mesh layers, i.e. the first mesh in the first mesh layer may be a square-continuing mesh, and the second mesh of the second mesh layer may also be a square-continuing mesh.
The first grid layer 100, the insulating medium layer, and the second grid layer 200 are sequentially stacked, and the first touch pattern 100A in the first grid layer 100 and the second vacant region pattern 200B in the second grid layer 200 are spatially overlapped. Moreover, the first conductive lines 110 of the first grid layer 100 and the second conductive lines 210 of the second grid layer 200 spatially intersect, and accordingly the first conductive lines 110 in the first touch pattern 100A and the second conductive lines 210 in the second vacant region pattern 200B spatially intersect, and have a first overlapping point P1.
In an alternative, the second touch pattern 200A in the second grid layer 200 also spatially overlaps the first vacant region pattern 100B in the first grid layer 100, and the second conductive lines 210 in the second touch pattern 200A respectively spatially intersect the first conductive lines 110 in the first vacant region pattern 100A with a second overlapping point P2. That is, the first conductive lines 110 of the first grid layer 100 and the second conductive lines 210 of the second grid layer 200 form a first overlapping point P1 at an overlapping point when the first touch pattern and the second vacant area pattern intersect each other in the area of the first touch pattern and the second vacant area pattern; and the second overlapping point P2 is formed by the overlapping point of the second touch control graph and the first vacant area graph when the two touch control graphs are intersected in the area of the first vacant area graph.
It is understood that, at this time, the first grid in the first grid layer 100 and the second grid in the second grid layer 200 are arranged in a staggered manner, so that the first wires 110 of the first grid layer and the second wires 210 of the second grid layer spatially intersect.
It should be noted that the term "spatial overlap" as used herein refers to: the first touch pattern 100A and the second blank area pattern 200B are formed in different plane layers, respectively, and are not in direct contact with each other, and in a direction perpendicular to the plane layer, a projection of the first touch pattern 100A and a projection of the second blank area pattern 200B have areas overlapping each other. Similarly, the term "spatially intersecting" as used herein refers to: an insulating medium layer is arranged between the first conducting wire 110 and the second conducting wire 210, so that the two conducting wires are not in direct contact with each other, but respectively face different directions on two planes which are parallel to each other, and spatial intersection is realized. I.e. the projections of the first and second wires intersect in a direction perpendicular to the plane in which they lie.
FIG. 3 is a partially enlarged view of an aa' area of the touch device shown in FIG. 2c according to an embodiment of the invention. Specifically, fig. 3 shows a partially enlarged view of a first touch pattern of the first mesh layer and a second empty area pattern of the second mesh layer overlapping in space.
Referring to fig. 2c and 3, the first conductive line 110 of the first touch pattern 100A and the second conductive line 210 of the second vacant region pattern 200B intersect with each other spatially to form a first overlapping point P1, and the second conductive line 210 located at the periphery of the first overlapping point P1 is in a cut-off state. Or it can be understood that a portion of the second conductive line 210 corresponding to the outside of the first overlap point P1 is cut off to form a second opening 210G, so that the overlapped portion of the second conductive line 210 corresponding to the first overlap point P1 can be separated from the rest of the second conductive line by the second opening 210G. Therefore, the overlapped portion of the second conductive lines 210 corresponding to the first overlapped point P1 is eliminated, and the overlapped portion is disconnected from other portions of the second conductive lines 210, so that even if the first conductive lines 110 of the first touch pattern and the second conductive lines 210 of the second vacant area pattern are shorted at the first overlapped point P1 (for example, shorted due to electrostatic breakdown), the portion shorted with the first conductive lines 110 is only the overlapped portion, rather than a large area of the second mesh formed by the second conductive lines, and therefore, even if there is a short, the normal touch function of the touch device can be ensured.
Specifically, in the present embodiment, the first touch pattern 100A of the first grid layer 100 forms a driving line pattern for receiving a touch voltage; and the second touch pattern 200A in the second mesh layer 200 constitutes a sensing line pattern for sensing a touch voltage. Therefore, when the touch device is configured to perform a touch process, a touch voltage is applied only to the first grid layer 100, and therefore, a larger voltage is applied to the first grid layer 100 relative to the second grid layer 100, so that a problem of electrostatic breakdown due to charge accumulation between the first touch pattern 100A and the second empty area pattern 200B of the first grid layer 100 is more likely to occur. Therefore, in this embodiment, the second conductive lines of the second grid layer 200 corresponding to the second vacant area patterns 200B are in a cut-off state, which is more favorable for avoiding the electrostatic breakdown between the first grid layer 100 and the second grid layer 200. In addition, the driving method of the touch device can be self-capacitance driving or mutual capacitance driving, for example.
Referring to fig. 3 with emphasis, in the first touch graph 100A, the cut-off point of the second conductive line 210 may be set as follows: on both sides of the first overlapping point P1 in the extending direction of the second wire 210. That is, the second conductive line 210 is cut at both sides of the first overlapping point P1, so that the cut overlapped part may form an independent second conductive line segment. When the first conductive line 110 and the second conductive line 210 are short-circuited at the first overlapping point P1, the first conductive line 110 is electrically connected to only the second conductive line segment corresponding to the first overlapping point P1.
It is considered that the second wire segment crosses the first wire 110 from the width direction of the first wire 110, and thus the length dimension of the second wire segment is larger than the width dimension of the first wire 110.
Fig. 4 is a partially enlarged view of a bb' area of the touch device shown in fig. 2c according to an embodiment of the invention. Specifically, fig. 4 only shows a partially enlarged view of a spatial overlap between a first vacant region pattern of the first mesh layer and a second touch pattern of the second mesh layer.
As shown in fig. 4, in an alternative, the first conductor 110 may be correspondingly truncated outside the second overlap point P2. Specifically, since the portion of the first conductive line 110 corresponding to the outside of the second overlap point P2 is cut off, the first opening 110G may be formed, and the overlap portion of the first conductive line 110 corresponding to the second overlap point P2 may be divided from the rest of the first conductive line by the first opening 110G. Therefore, the overlapped portion of the first conductive line 110 corresponding to the second overlapped point P2 is eliminated, and thus, even if the second conductive line 210 of the second touch pattern is shorted (for example, shorted due to electrostatic breakdown) with the first conductive line 110 of the first vacant region pattern at the second overlapped point P2, the portion shorted with the second conductive line 110 is only the overlapped portion, rather than a large area of the first mesh formed by the first conductive lines, and thus, even if there is a short, the normal touch function of the touch device can be ensured.
With continued reference to fig. 4, for the second touch pattern 200A, the cut-off for the first conductive line 110 may also be set as follows: on both sides of the second overlapping point P2 in the extending direction of the first wire 110. That is, the first conductive line 110 is cut at both sides of the second overlapping point P2, so that the portion of the first conductive line 110 corresponding to the second overlapping point P2 is cut to form the independent first conductive line segment. Similarly, the first conductive line segment crosses the second conductive line 210 from the width direction of the second conductive line 210, so the length dimension of the first conductive line segment is larger than the width dimension of the second conductive line 210.
In this embodiment, only the second conducting line segment with a smaller size may be shorted on the area of the first conducting line 110 of the first touch pattern 100A corresponding to the first overlapping point P1; and, only the first conducting wire segment with smaller size may be shorted on the area of the second conducting wire 210 of the second touch pattern 200A corresponding to the second overlapping point P2. Therefore, even if the first overlapping point P1/the second overlapping point P2 are short-circuited due to electrostatic breakdown, the first touch pattern 100A/the second touch pattern 200A are not electrically connected to the large-area second grid/the large-area first grid, and therefore, the touch performance of the touch device is not affected.
With continued reference to fig. 2c and fig. 3, the first conductive lines 110 of the first mesh layer 100 and the second conductive lines 210 of the second mesh layer 200 spatially intersect to define a plurality of virtual meshes 400. Further, the distance dimension D2 from the cut of the second conductive line 210 corresponding to the first overlapping point P1 to the first overlapping point P1 is smaller than the side length dimension D1 of the virtual cell. Specifically, the side length D1 of the virtual grid 400 is, for example: two adjacent parallel first wires 110 and second wires 210 have a center distance dimension. The pitch dimension D2 of the second wire 210 from the cut of the first overlapping point P1 to the first overlapping point P1 is, for example: the second opening 210G formed at the truncation has a distance dimension from the center thereof to the center of the first overlapping point P1. Since the distance dimension D2 from the second opening 210G corresponding to the first overlapping point P1 is smaller than the side length dimension D1 of the virtual grid, the size of the formed second conductive line segment can be correspondingly made smaller, so as to further reduce the influence of the first conductive line 110 and the second conductive line 210 on the performance of the touch device due to short circuit.
Similarly, as shown in fig. 2c and fig. 4, the distance between the cut of the first conductive line 110 corresponding to the second overlapping point P2 and the second overlapping point P2 is smaller than the side length of the virtual cell. That is, the size of the interval from the first opening 110G corresponding to the second overlapping point P2 to the first overlapping point P1 is smaller than the size of the side length of the virtual mesh.
Specifically, the side length D1 of the virtual grid is, for example, less than 100 μm, and specifically may be between 10 μm and 100 μm. At this time, the spacing dimension D2 from the second opening 210G corresponding to the first overlapping point P1 is also correspondingly less than 100 μm; and the size of the space from the first opening 110G corresponding to the second overlapping point P2 is also correspondingly less than 100 μm. In addition, in the present embodiment, the length dimension of the second wire segment corresponding to the first overlapping point P1 may be 2 times the distance dimension D2 from the second opening 210G to the first overlapping point P1, in combination with the above-mentioned, the length dimension of the second wire segment is greater than the width dimension of the first wire, that is, the length dimension of the second wire segment is greater than the width dimension of the first wire and less than 2 times the side length dimension D1 of the virtual grid. Accordingly, the length dimension of the first wire segment is greater than the width dimension of the second wire and less than 2 times the side length dimension D1 of the virtual grid. Wherein the widths of the first conductive lines 110 of the first mesh layer 100 and the second conductive lines 210 of the second mesh layer 200 are, for example, both between 1 μm and 15 μm. In this embodiment, the length of the first wire segment is less than 200 μm and greater than 1 μm.
Further, the first conductive wires 110 and the second conductive wires 210 may both include metal, and accordingly, the first mesh formed by the first conductive wires 110 is a first metal mesh, and the second mesh formed by the second conductive wires 210 is a second metal mesh. The insulating dielectric layer may be made of a transparent insulating material such as silicon oxide and/or photoresist.
Referring to fig. 2a and 2B, in the present embodiment, a plurality of first grid divisions in the first grid layer 100 form a plurality of first touch patterns 100A and a plurality of first vacant region patterns 100B, and a plurality of second grid divisions in the second grid layer 200 form a plurality of second touch patterns 200A and a plurality of second vacant region patterns 200B. The plurality of first touch patterns 100A and the plurality of first vacant region patterns 100B may be symmetrically disposed. That is, the plurality of first touch patterns 100A are symmetrically disposed, and the plurality of first vacant region patterns 100B are symmetrically disposed; alternatively, it may be considered that the arrangement of the plurality of first touch patterns 100A and the plurality of first vacant region patterns 100B are symmetrical to each other as a whole. Similarly, the second touch patterns 200A and the second empty area patterns 200B may be symmetrically disposed.
In this embodiment, the first grid layer 100 and the second grid layer 200 are both rectangular, and the plurality of first grids are divided into 2 first touch graphics 100A and 2 first vacant area graphics 100B along a diagonal of the rectangle, where the 2 first touch graphics 100A are bilaterally symmetric, and the 2 first vacant area graphics 100B are vertically symmetric; and the plurality of second grids are divided into 2 second touch patterns 200A and 2 second vacant region patterns 200B along a diagonal line of the rectangle, wherein the 2 second touch patterns 100A are vertically symmetrical, and the 2 second vacant region patterns 100B are horizontally symmetrical.
Further, the first touch pattern 100A and the first vacant area pattern 100B in the first grid layer 100 are disposed corresponding to the second touch pattern 200A and the second vacant area pattern 200B in the second grid layer 200. That is, the area of the first mesh layer 100 divided into the first touch pattern 100A and the area of the second mesh layer 200 divided into the second vacant area pattern 200B correspond to each other, so that the first touch pattern 100A and the second vacant area pattern 200B are spatially overlapped when the first mesh layer 100 and the second mesh layer 200 are stacked on each other. Accordingly, the area of the first mesh layer 100 divided into the first vacant area pattern 100B and the area of the second mesh layer 200 divided into the second touch pattern 200A correspond to each other, so that the second touch pattern 200A and the first vacant area pattern 100B are spatially overlapped when the first mesh layer 100 and the second mesh layer 200 are stacked on each other.
As shown in fig. 2a and 2B, in the present embodiment, the first grid layer 100 further includes a first defined area, and the first conductive lines in the first defined area in the first grid layer 100 are disconnected from each other, so that the plurality of first grids are divided into the first touch pattern 100A and the first vacant area pattern 100B by the first defined area, which are electrically insulated from each other. And the second grid layer 200 further includes a second defined area, and second conductive lines in the second defined area in the second grid layer 200 are disconnected from each other, so that the plurality of second grids are divided into the second touch pattern 200A and the second vacant area pattern 200B, which are electrically insulated from each other, by the second defined area. Further, when the first mesh layer and the second mesh layer are stacked on each other, the first defined region of the first mesh layer 100 and the second defined region of the second mesh layer 100 are overlapped.
Specifically, the first and second defined areas correspond to the first and second defined lines 310 and 320, and the first conductive line virtually intersecting the first and second defined lines 310 and 320 in the first grid is in a disconnected state, so that the first touch control pattern 100A and the first vacant area pattern 100B in the first grid layer 100 are separated from each other based on the first defined area; and second conductive lines virtually intersecting the first defining line 310 and the second defining line 320 in the second mesh are also in a disconnected state, so that the second touch pattern 200A and the second vacant region pattern 200B are separated from each other based on the second defining region.
Further, the first touch pattern 100A is located on a side of the first defined line 310 away from the second defined line 320, and the second touch pattern 200A is located on a side of the second defined line 320 away from the first defined line 310, and a space is reserved between the first defined line 310 and the second defined line 320, so that the first touch pattern 100A and the second touch pattern 200A can be staggered from each other.
In this embodiment, the first mesh layer 100 and the second mesh layer 200 are both rectangular, and the first defined area and the second defined area are located in diagonal regions of the rectangle, so that the plurality of first meshes are divided into 2 symmetrical first touch patterns 100A and 2 symmetrical first vacant area patterns 100B by the first defined area, and the plurality of second meshes are divided into 2 symmetrical second touch patterns 200A and 2 symmetrical second vacant area patterns 200B by the second defined area.
It should be noted that the first defining line 310 and the second defining line 320 may be virtual lines, which are used to indicate the divided areas of the first touch graphic 100A and the first vacant region graphic 100B in the first grid layer, and are used to indicate the divided areas of the second touch graphic 200A and the first vacant region graphic 200B in the second grid layer.
Based on the touch device, the invention also provides a display device which comprises the touch device. The display device with the touch device has relatively good touch performance.
In summary, in the touch device provided by the invention, at the position where the first conductive lines of the first grid layer and the second conductive lines of the second grid layer spatially overlap, the second conductive lines corresponding to the second vacant region patterns are cut off at the outer sides of the overlapping points of the second conductive lines and the first conductive lines, so as to form the overlapping portions of the second conductive lines, which are divided from other portions. In this way, when the first conductive line of the first touch pattern and the second conductive line of the second vacant area pattern are shorted, the portion shorted with the first conductive line only includes the overlapping portion with a smaller size, so that the normal function of the touch device can still be ensured.
Furthermore, the first conductive lines corresponding to the first vacant areas may also be spatially overlapped with the second conductive lines corresponding to the second touch pattern to have second overlapped points, and the first conductive lines corresponding to the first vacant area patterns may be cut off from the outer sides of the second overlapped points. At this time, even if the second conducting wire of the second touch control pattern and the first conducting wire of the first vacant region pattern have a short circuit phenomenon, the influence on the performance of the touch control device can still be effectively avoided.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A touch device, comprising:
the first grid layer is provided with a plurality of crossed first wires to form a plurality of first grids, and the first grids are divided to form a first touch control graph and a first vacant area graph;
the second grid layer is provided with a plurality of second crossed wires to form a plurality of second grids, and the second grids are divided to form a second touch control graph and a second vacant area graph; and the number of the first and second groups,
the insulating medium layer is positioned between the first grid layer and the second grid layer;
the first grid layer, the insulating medium layer and the second grid layer are sequentially overlapped, the first touch control graph and the second vacant area graph are overlapped in space, each first lead in the first touch control graph is intersected with the second lead in the second vacant area graph in space to form a plurality of first overlapping points, and the second leads located on the periphery of each first overlapping point are in a cutting state.
2. The touch device of claim 1, wherein the first conductive lines and the second conductive lines intersect spatially to define a plurality of virtual grids; and the size of the distance from the cut of the second conducting wire corresponding to the first overlapping point is smaller than the side length of the virtual grid.
3. The touch device according to claim 1, wherein the first touch pattern constitutes a driving line pattern for receiving a touch voltage; the second touch control pattern forms an induction line pattern used for inducing touch control voltage.
4. The touch device of claim 1, wherein the first grid layer further comprises a first defined area, and first conductive lines in the first defined area in the first grid layer are disconnected from each other, so that the plurality of first grids are divided into the first touch pattern and the first vacant area pattern by the first defined area, and the first touch pattern and the first vacant area pattern are electrically insulated from each other;
and the second grid layer further comprises a second defined area, wherein second wires in the second defined area in the second grid layer are disconnected from each other, so that the plurality of second grids are divided into the second touch control graph and the second vacant area graph which are electrically insulated from each other by the second defined area.
5. The touch device of claim 4, wherein the first grid layer and the second grid layer are both rectangular in shape, the first defined area and the second defined area are located in diagonal areas of the rectangle, the plurality of first grids are divided into 2 symmetrical first touch patterns and 2 symmetrical first empty area patterns by the first defined area, and the plurality of second grids are divided into 2 symmetrical second touch patterns and 2 symmetrical second empty area patterns by the second defined area.
6. The touch device of claim 1, wherein the first conductive lines and the second conductive lines are made of metal.
7. The touch device of claim 1, wherein the insulating dielectric layer comprises silicon oxide and/or photoresist.
8. The touch device of claim 1, wherein the touch device is driven by self capacitance or mutual capacitance.
9. The touch device according to any one of claims 1 to 8, wherein the second touch pattern and the first empty area pattern are spatially overlapped, and a second conductive line in the second touch pattern is spatially intersected with a first conductive line in the first empty area pattern to have a second overlapping point, and the first conductive line located in the periphery of the second overlapping point is in a truncated state.
10. A display device comprising the touch device according to claim 1.
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