CN113778268B

CN113778268B - Touch control device

Info

Publication number: CN113778268B
Application number: CN202111072994.4A
Authority: CN
Inventors: 陈玠鸣; 简伯儒
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2020-11-06
Filing date: 2021-09-14
Publication date: 2023-06-16
Anticipated expiration: 2041-09-14
Also published as: TW202219918A; TW202219715A; TWI791219B; TWI761174B; TW202219717A; TWI773207B; TWI763430B; DE112021005821T5; CN113778268A; WO2022095607A1; TW202219718A; TW202219716A; TWI770946B

Abstract

The invention provides a touch device. The touch device comprises a plurality of first touch electrodes and a plurality of second touch electrodes. The first touch electrodes and the second touch electrodes are staggered to define a plurality of first staggered areas. Each first touch electrode comprises a plurality of first trunks extending in a first direction and a plurality of second trunks extending in a second direction. The first plurality of stems intersect the second plurality of stems to form a first plurality of grids. Each first touch electrode further comprises a plurality of first branches, and the first branches are intersected with two sections of two adjacent first trunks of at least one first grid.

Description

Touch control device

Technical Field

The present disclosure relates to electronic devices, and particularly to a touch device.

Background

The touch device (such as a touch panel) has the advantage of convenient operation, and is widely installed in electronic products (such as mobile phones, tablet computers, electronic blackboards and the like). The touch device comprises a plurality of first touch electrodes and a plurality of second touch electrodes which are staggered. In general, the first touch electrode and the second touch electrode are mostly designed as transparent sensing patterns based on visual effect. The transparent sensing pattern has high resistance, which is unfavorable for the electrical property of the touch device. Therefore, mesh-shaped first and second touch electrodes made of low-resistance materials (e.g., metals) have been developed.

Compared with the transparent sensing pattern, the mesh-shaped first touch electrode and second touch electrode are more suitable for being applied to large-sized touch devices (such as electronic blackboard). An edge-induced electric field can be formed between the first touch electrode and the second touch electrode to detect whether a conductive object (such as but not limited to a finger, a stylus, etc.) is in contact with or near the touch surface. Generally, in a large-sized touch device, the distance between the touch surface and the first and second touch electrodes is relatively long, so that the distribution density of the electric lines of force of the fringe induction electric field on the touch surface is insufficient, which affects the performance of the touch device.

Disclosure of Invention

The invention aims to provide a touch device with good performance.

The touch device of an embodiment of the invention comprises a plurality of first touch electrodes and a plurality of second touch electrodes. Each first touch electrode comprises a plurality of first trunks, a plurality of second trunks, a plurality of first branches and a plurality of second branches. The plurality of first stems extend substantially in a first direction. The first trunks and the second trunks are crossed to form a plurality of first grids, and each first grid is defined by two sections of two adjacent first trunks and two sections of two adjacent second trunks. The first branches are separated from each other in structure, wherein the first branches cross two sections of two adjacent first trunks of at least one first grid of the first grids. The second branches are separated from each other structurally, wherein the second branches cross two sections of two adjacent second trunks of at least one first grid of the first grids. The plurality of second touch electrodes are staggered with the plurality of first touch electrodes to define a plurality of first staggered areas. The first branches and the second branches of the first touch electrodes are at least positioned in the first staggered areas.

The touch device of an embodiment of the invention comprises a plurality of first touch electrodes, a plurality of first virtual electrodes, a plurality of second touch electrodes and a plurality of second virtual electrodes. Each first virtual electrode is arranged between two adjacent first touch electrodes. Each second virtual electrode is arranged between two adjacent second touch electrodes. The first touch electrodes and the second touch electrodes are staggered to define a plurality of first staggered areas. The first touch electrodes are staggered with the second virtual electrodes to define a plurality of second staggered areas. The plurality of second touch electrodes are staggered with the plurality of first virtual electrodes to define a plurality of third staggered areas. Each first touch electrode comprises a plurality of first trunks extending in a first direction and a plurality of second trunks extending in a second direction. The first direction is staggered with the second direction. The first plurality of stems intersect the second plurality of stems to form a first plurality of grids. Each first grid is defined by two sections of two adjacent first backbones and two sections of two adjacent second backbones. The number density of the plurality of first grids is greater on a second interleaving region than on a first interleaving region.

In an embodiment of the invention, in a top view of the touch device, the first branches and the second branches of each of the first touch electrodes are separated from the second touch electrodes.

In an embodiment of the invention, the touch device further includes a plurality of first dummy patterns. The plurality of first dummy patterns are respectively arranged in the plurality of first grids and separated from the plurality of first touch electrodes. Each first dummy pattern includes a first portion and a second portion. The first portions and the two second branches on the corresponding first grids are arranged in the first direction and are separated from each other in structure. The second part is intersected with the first part, is arranged with two first branches on the corresponding first grid in a second direction, and is separated from each other in structure.

In an embodiment of the invention, a first portion of each of the first dummy patterns has a first distance from one of the two second branches on the corresponding first grid, and the first distance is less than or equal to 8 μm.

In an embodiment of the invention, the second portion of each of the first dummy patterns has a second distance from one of the two first branches on the corresponding first grid, and the second distance is less than or equal to 8 μm.

In an embodiment of the invention, a line width of at least one of the first stem of the first touch electrode, the second stem of the first touch electrode, the first branch of the first touch electrode, the second branch of the first touch electrode, the first portion of the first dummy pattern, and the second portion of the first dummy pattern is less than or equal to 8 μm.

In an embodiment of the invention, the first branch of the first touch electrode includes a first portion and a second portion respectively located at opposite sides of the corresponding first trunk, and a length of the first portion of the first branch is different from a length of the second portion of the first branch.

In an embodiment of the invention, the second branch of the first touch electrode includes a first portion and a second portion respectively located at opposite sides of the corresponding second trunk, and a length of the first portion of the second branch is different from a length of the second portion of the second branch.

In an embodiment of the invention, each of the second touch electrodes includes a plurality of third stems, a plurality of fourth stems, a plurality of third branches, and a plurality of fourth branches. The plurality of third stems extend substantially in the first direction. The plurality of fourth trunks extend substantially in the second direction, wherein the plurality of third trunks intersect the plurality of fourth trunks to form a plurality of second grids, and each second grid is defined by two sections of two adjacent third trunks and two sections of two adjacent fourth trunks. The third branches are separated from each other structurally, wherein the third branches intersect two sections of two adjacent third trunks of at least one second grid of the second grids. The fourth branches are separated from each other structurally, wherein the fourth branches cross two sections of two fourth trunks adjacent to at least one second grid of the second grids. The third branches and the fourth branches of the second touch electrodes are at least positioned in the first staggered areas.

In an embodiment of the invention, in a top view of the touch device, the third branches and the fourth branches of each of the second touch electrodes are separated from the first touch electrodes.

In an embodiment of the invention, the touch device further includes a plurality of second dummy patterns. The plurality of second dummy patterns are respectively arranged in the plurality of second grids and separated from the plurality of second touch electrodes. Each of the second dummy patterns includes a third portion and a fourth portion. The third portion and the two fourth branches on the corresponding second grid are arranged in the first direction and are separated from each other in structure. The fourth part is intersected with the third part, is arranged with two third branches on the corresponding second grid in the second direction, and is separated from each other in structure.

In an embodiment of the invention, a third portion of each of the second virtual patterns has a third distance from one of the two fourth branches on the corresponding second grid, and the third distance is less than or equal to 8 μm.

In an embodiment of the invention, a fourth portion of each of the second dummy patterns has a fourth distance from one of the two third branches on the corresponding second grid, and the fourth distance is less than or equal to 8 μm.

In an embodiment of the invention, a line width of at least one of the third stem of the second touch electrode, the fourth stem of the second touch electrode, the third branch of the second touch electrode, the fourth branch of the second touch electrode, the third portion of the second dummy pattern, and the fourth portion of the second dummy pattern is less than or equal to 8 μm.

In an embodiment of the invention, in a top view of the touch device, a plurality of first stems of the plurality of first touch electrodes, a plurality of first portions of the plurality of first dummy patterns, a plurality of third stems of the plurality of second touch electrodes, and a plurality of third portions of the plurality of second dummy patterns are arranged at a pitch of P1, a first portion of a first branch of the first touch electrode is located at one side of the corresponding first stem, a length of the first portion of the first branch is a1, and 0.25·p1 is less than or equal to a1 and less than or equal to 0.75·p1.

In an embodiment of the invention, each of the second touch electrodes includes a plurality of third stems and a plurality of fourth stems. The plurality of third stems extend substantially in the first direction. The plurality of fourth stems extend substantially in the second direction, wherein the plurality of third stems intersect the plurality of fourth stems to form a plurality of second meshes. In the same first interleaving region, the number density of the plurality of second grids is greater than the number density of the plurality of first grids.

In an embodiment of the present invention, a width of one of the plurality of first grids on the first interleaving region is greater than a width of another one of the plurality of first grids on the second interleaving region.

In an embodiment of the invention, each of the first touch electrodes further includes a plurality of first branches and a plurality of second branches. The first branches are separated from each other in structure, wherein the first branches cross two sections of two adjacent first trunks of at least one first grid of the first grids. The second branches are separated from each other structurally, wherein the second branches cross two sections of two adjacent second trunks of at least one first grid of the first grids. The first branches and the second branches of the first touch electrodes are positioned in the first staggered areas.

In an embodiment of the invention, each of the second touch electrodes includes a plurality of third stems extending substantially in the first direction and a plurality of fourth stems extending substantially in the second direction; the third trunks intersect the fourth trunks to form a plurality of second grids; each second grid is defined by two sections of two adjacent third trunks and two sections of two adjacent fourth trunks; the number density of the plurality of second cells is greater on a third interleaved region than on a first interleaved region.

In an embodiment of the present invention, a width of one of the plurality of second meshes on the first interleaving region is greater than a width of another one of the plurality of second meshes on the third interleaving region.

In an embodiment of the invention, each of the second touch electrodes further includes a plurality of third branches and a plurality of fourth branches. The third branches are separated from each other structurally, wherein the third branches intersect two sections of two adjacent third trunks of at least one second grid of the second grids. The fourth branches are separated from each other structurally, wherein the fourth branches cross two sections of two fourth trunks adjacent to at least one second grid of the second grids. The third branches and the fourth branches of the second touch electrodes are located in the first interleaving areas.

Drawings

Fig. 1 is a schematic cross-sectional view of a touch device according to an embodiment of the invention.

Fig. 2 is a schematic top view of a touch device according to an embodiment of the invention.

Fig. 3 is an enlarged schematic view of a portion of a touch device of the touch device according to an embodiment of the invention.

Fig. 4 illustrates a first conductive layer of a touch element of the touch device of fig. 3.

Fig. 5 illustrates a second conductive layer of the touch element of the touch device of fig. 3.

Fig. 6 illustrates a plurality of first dummy patterns, a plurality of second dummy patterns, and a first touch electrode and a second touch electrode interleaved with each other of the touch device of fig. 3.

Fig. 7 is a schematic top view of a touch device according to a first comparative example.

Fig. 8 is a schematic top view of a touch device of a second comparative example.

Fig. 9 is a schematic top view of a touch device according to a third comparative example.

Fig. 10 is a schematic top view of a touch device according to an embodiment of the invention.

Fig. 11 is a schematic top view of a touch device according to an embodiment of the invention.

Fig. 12 is a schematic top view of a touch device according to an embodiment of the invention.

Fig. 13 is a schematic top view of a touch device according to an embodiment of the invention.

Fig. 14 is a schematic top view of a touch device according to an embodiment of the invention.

Fig. 15 illustrates a first conductive layer of a touch element of the touch device of fig. 14.

Fig. 16 illustrates a second conductive layer of a touch element of the touch device of fig. 14.

Fig. 17 illustrates a plurality of first dummy patterns, a plurality of second dummy patterns, and a first touch electrode and a second touch electrode of the touch device of fig. 14 that are interleaved.

Fig. 18 is a schematic top view of a touch device according to an embodiment of the invention.

Fig. 19 is a schematic top view of a touch device according to an embodiment of the invention.

Fig. 20 is a schematic top view of a touch device according to an embodiment of the invention.

The reference numerals are as follows:

10. 10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H, 10' -1, 10' -2, 10' -3: touch device

10a touch surface

110 first conductive layer

112 first touch electrode

112a first trunk

112as section

112b second trunk

112bs section

112c first branch

112c-1, 112d-1, 132d-1: first portion

112c-2, 112d-2, 132d-2: second portion

112d second branch

112h first grid

114 first virtual electrode

116 first dummy pattern

116a first portion

116b second portion

120 first insulating layer

130 second conductive layer

132 second touch electrode

132a third trunk

132as section

132b fourth trunk

132bs section

132c third branch

132c-1 first part

132c-2 second part

132d fourth branch

132h second grid

134 second virtual electrode

136 second dummy pattern

136a third part

136b fourth part

140 second insulating layer

210 first substrate

220 pixel array layer

230 second substrate

230a outer surface

240 display medium

250 common electrode

300 backlight source

410 first polarizer

420 second polarizer

A1, A2, B1, B2, C1, C2, D1, D2: width

a1, a2, a3, a4, a5, a6, a7, a8: length

DP display element

DS1 first distance

DS2 second distance

DS3 third distance

DS4 fourth distance

d1 first direction

d2 second direction

K topical application

P1, P2 spacing

R1:first interleaving region

R2:second interleaving region

R3 third interleaving region

R4 fourth interleaving region

S1, S2, S3, S4 horizontal spacing

TS (transport stream) touch control element

W112a, W112b, W112c, W112d, W116a, W116b, W132a, W132b, W132c, W132d, W136a, W136b: line width

x, y direction

Detailed Description

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.

It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connection. Furthermore, "electrically connected" or "coupled" may mean that there are other elements between the two elements.

As used herein, "about," "approximately," or "substantially" includes both the values and average values within an acceptable deviation of the particular values as determined by one of ordinary skill in the art, taking into account the particular number of measurements and errors associated with the measurements in question (i.e., limitations of the measurement system). For example, "about" may mean within one or more standard deviations of the values, or within ±30%, ±20%, ±10%, ±5%. Further, as used herein, "about," "approximately," or "substantially" may be used to select a more acceptable range of deviations or standard deviations depending on the optical, etching, or other properties, and may not be used with one standard deviation for all properties.

Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present invention and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Fig. 1 is a schematic cross-sectional view of a touch device 10 according to an embodiment of the invention.

Referring to fig. 1, the touch device 10 includes a touch element TS. The touch element TS includes a first conductive layer 110, a first insulating layer 120 covering the first conductive layer 110, a second conductive layer 130 disposed on the first insulating layer 120, and a second insulating layer 140 covering the second conductive layer 130.

In this embodiment, the touch device 10 may optionally include a display element DP. The display element DP includes a first substrate 210, a pixel array layer 220 disposed on the first substrate 210, an opposite second substrate 230 disposed on the first substrate 210, a common electrode 250, and a display medium 240 disposed between the second substrate 230 and the pixel array layer 220, wherein a potential difference between the common electrode 250 and a plurality of pixel electrodes (not shown) of the pixel array layer 220 is used to drive the display medium 240.

In the present embodiment, the pixel array layer 220 and the common electrode 250 of the display device DP can be selectively disposed on the first substrate 210 and the second substrate 230, respectively. However, the present invention is not limited thereto, and in other embodiments, the pixel array layer 220 of the display element DP and the common electrode 250 may be disposed on the same substrate (e.g. the first substrate 210).

In the present embodiment, the display medium 240 may be a non-self-luminous material (such as but not limited to liquid crystal), and the display device DP may include a backlight 300, a first polarizer 410 and a second polarizer 420, wherein the first polarizer 410 and the second polarizer 420 are respectively located at two opposite sides of the display medium 240, and the first polarizer 410 is disposed between the backlight 300 and the display medium 240. However, the invention is not limited thereto, and in other embodiments, the display medium 240 may be a self-luminous material (such as but not limited to an organic electroluminescent material, a micro light emitting diode, etc.), and the display element DP may not include the backlight 300.

In the present embodiment, the touch element TS may be selectively formed on the outer surface 230a of the second substrate 230 of the display element DP. In detail, in the present embodiment, the first conductive layer 110, the first insulating layer 120, the second conductive layer 130 and the second insulating layer 140 of the touch device TS can be stacked on the outer surface 230a of the second substrate 230 of the display device DP in sequence. In other words, the touch device 10 of the present embodiment may be an on-cell (external-on) touch device. However, the present invention is not limited thereto, in another embodiment, the touch device TS may be selectively formed on another substrate (not shown) to form a touch substrate, the touch substrate is attached to the display device DP, and the touch device 10 may be an out-cell (out-cell) touch device; in yet another embodiment, the touch device TS may be selectively formed between the second substrate 230 and the display medium 240 and/or between the first substrate 210 and the display medium 240, and the touch device 10 may be an in-cell (in-cell) touch device.

Fig. 2 is a schematic top view of a touch element TS of the touch device 10 according to an embodiment of the invention.

Fig. 3 is an enlarged schematic view of a portion K of the touch element TS of the touch device 10 according to an embodiment of the invention. Fig. 3 corresponds to the part K of fig. 2. Fig. 2 omits the plurality of first dummy patterns 116 and the plurality of second dummy patterns 136 of fig. 3.

Fig. 4 illustrates the first conductive layer 110 of the touch element TS of the touch device 10 of fig. 3.

Fig. 5 illustrates the second conductive layer 130 of the touch element TS of the touch device 10 of fig. 3.

Fig. 6 illustrates the plurality of first dummy patterns 116, the plurality of second dummy patterns 136, and the staggered one first touch electrode 112 and one second touch electrode 132 of the touch device 10 of fig. 3.

Referring to fig. 1 and 2, the first conductive layer 110 of the touch device TS includes a plurality of first touch electrodes 112. The first touch electrodes 112 are separated from each other in structure and are arranged along the direction y. In the present embodiment, the first conductive layer 110 of the touch device TS further includes a plurality of first dummy electrodes 114, wherein each of the first dummy electrodes 114 is disposed between two adjacent ones of the plurality of first touch electrodes 112. The plurality of first touch electrodes 112 and the plurality of first dummy electrodes 114 are alternately arranged along the direction y and are structurally separated from each other. For example, in the present embodiment, the material of the first conductive layer 110 may include metal, but the invention is not limited thereto.

Referring to fig. 2, 3 and 4, it should be noted that, in any drawing of the present disclosure, a distance between each first touch electrode 112 and an adjacent first virtual electrode 114 (i.e. a width of a disconnection between the first touch electrode 112 and the first virtual electrode 114) is only shown to schematically indicate that the first touch electrode 112 is disconnected from the first virtual electrode 114; the size relationship between the distance between each first touch electrode 112 and the adjacent first virtual electrode 114 (i.e. the width of the disconnection between the first touch electrode 112 and the first virtual electrode 114) and the first grid 112h in the drawings is not intended to limit the present invention.

Referring to fig. 1, 2 and 3, the second conductive layer 130 of the touch device TS includes a plurality of second touch electrodes 132. Referring to fig. 3 and 6, the plurality of second touch electrodes 132 are interleaved with the plurality of first touch electrodes 112 to define a plurality of first interleaved regions R1. Referring to fig. 2 and 3, the plurality of second touch electrodes 132 are separated from each other in structure and are arranged along the direction x. In the present embodiment, the direction x and the direction y may be perpendicular, but the invention is not limited thereto.

Referring to fig. 1 and 2, for example, in the present embodiment, a plurality of first touch electrodes 112 may be used as driving electrodes (TX) and a plurality of second touch electrodes 132 may be used as receiving electrodes (RX); the plurality of second touch electrodes 132 used as the receiving electrodes (RX) may be farther from the display element DP than the plurality of first touch electrodes 112 used as the driving electrodes (TX); however, the invention is not limited thereto.

Referring to fig. 2 and 3, in the present embodiment, the second conductive layer 130 of the touch device TS further includes a plurality of second dummy electrodes 134, wherein each of the second dummy electrodes 134 is disposed between two adjacent ones of the plurality of second touch electrodes 132. The plurality of second touch electrodes 132 and the plurality of second dummy electrodes 134 are alternately arranged along the direction x and are structurally separated from each other. For example, in the present embodiment, the material of the second conductive layer 130 may include metal, but the invention is not limited thereto.

Referring to fig. 2, 3 and 5, it should be noted that, in any drawing of the present disclosure, a distance between each second touch electrode 132 and an adjacent second virtual electrode 134 (i.e. a width of a disconnection between the second touch electrode 132 and the second virtual electrode 134) is only shown to schematically indicate that the second touch electrode 132 is disconnected from the second virtual electrode 134; the size relationship between the distance between each second touch electrode 132 and the adjacent second virtual electrode 134 (i.e. the width of the disconnection between the second touch electrode 132 and the second virtual electrode 134) and the second grid 132h in the drawings is not intended to limit the present invention.

Referring to fig. 3 and 4, each first touch electrode 112 includes a plurality of first stems 112a extending substantially in a first direction d1 and a plurality of second stems 112b extending substantially in a second direction d2, wherein the first direction d1 is intersected with the second direction d2, the plurality of first stems 112a are intersected with the plurality of second stems 112b to form a plurality of first grids 112h, and each first grid 112h is defined by two sections 112as of two adjacent first stems 112a and two sections 112bs of two adjacent second stems 112 b. In short, in the present embodiment, each of the first touch electrodes 112 may be a metal mesh (metal mesh).

Referring to fig. 4, it is noted that each of the first touch electrodes 112 further includes a plurality of first branches 112c and a plurality of second branches 112d. The first branches 112c are separated from each other in structure. The first branches 112c intersect two segments 112as of two adjacent first stems 112a of the at least one first mesh 112 h. The plurality of second branches 112d are structurally separated from one another. The plurality of second branches 112d intersect two segments 112bs of two adjacent second stems 112b of the at least one first mesh 112 h.

Referring to fig. 3 and fig. 4, in the present embodiment, the first touch electrodes 112 and the second touch electrodes 132 are staggered in the first staggered areas R1, and the first branches 112c and the second branches 112d of the first touch electrodes 112 are at least located in the first staggered areas R1. In detail, the first touch electrodes 112 are further interleaved with the second virtual electrodes 134 to define a plurality of second interleaved regions R2; the second touch electrodes 132 are further interleaved with the first virtual electrodes 114 to define a third interleaved region R3; the first dummy electrodes 114 are interleaved with the second dummy electrodes 134 to define a fourth interleaved region R4; in the embodiment, the first branches 112c and the second branches 112d of the first touch electrodes 112 are located in the second interlacing areas R2 in addition to the first interlacing areas R1, but the invention is not limited thereto.

Referring to fig. 3 and 4, in the top view of the touch device 10, the first branches 112c and the second branches 112d of each first touch electrode 112 are separated from the second touch electrode 132.

Referring to fig. 1, 2 and 3, a fringe-induced electric field is formed between the first touch electrodes 112 and the second touch electrodes 132 to detect whether a conductive object (e.g., but not limited to, a finger, a stylus, etc.) contacts or approaches the touch surface 10a of the touch device 10. Referring to fig. 1, 3 and 4, it is noted that, since the first touch electrode 112 has the first branch 112c and the second branch 112d, the horizontal spacing S1 (shown in fig. 3) between the first branch 112c or the second branch 112d of the first touch electrode 112 and the third trunk 132a or the fourth trunk 132b of the second touch electrode 132 is smaller than the horizontal spacing S2 between the first trunk 112a or the second trunk 112b of the first touch electrode 112 and the third trunk 132a or the fourth trunk 132b of the second touch electrode 132; that is, the distance between the first branch 112c and/or the second branch 112d of the first touch electrode 112 and the third stem 132a or the fourth stem 132b of the second touch electrode 132 is short; therefore, the first branch 112c and/or the second branch 112d of the first touch electrode 112 are beneficial to push the electric lines of force of the fringe-induced electric field between the first touch electrode 112 and the second touch electrode 132 toward the touch surface 10a, so as to increase Cm, and improve the performance (such as but not limited to, touch sensitivity) of the touch device 10 related to cm%, where Cm% = [ (Cm-Cm ')/Cm ]. Times.100%, where Cm is the induced capacitance of the first touch electrode 112 and the second touch electrode 132 when no conductive material (not shown) is disposed on the touch surface 10a, and Cm' is the induced capacitance of the first touch electrode 112 and the second touch electrode 132 when a conductive material (not shown) is disposed on the touch surface 10a.

Referring to fig. 3 and fig. 4, in the present embodiment, the first conductive layer 110 of the touch device TS further includes a plurality of first dummy patterns 116 respectively disposed in the plurality of first grids 112h and separated from the plurality of first touch electrodes 112. Each first dummy pattern 116 includes a first portion 116a and a second portion 116b, wherein the first portion 116a and two second branches 112d on a corresponding first grid 112h are arranged in a first direction d1 and are structurally separated from each other, and the second portion 116b crosses the first portion 116a and two first branches 112c on a corresponding first grid 112h are arranged in a second direction d2 and are structurally separated from each other. In short, the first dummy pattern 116 may be a cross-shaped electrode located within the first mesh 112h of the first touch electrode 112.

Referring to fig. 4, in the present embodiment, a first portion 116a of each first dummy pattern 116 and one of two second branches 112d on a corresponding first grid 112h have a first distance DS1, and the first distance DS1 is less than or equal to 8 μm; the second portion 116b of each first dummy pattern 116 has a second distance DS2 from one of the two first branches 112c on the corresponding first grid 112h, and the second distance DS2 is less than or equal to 8 μm. In other words, in the present embodiment, a plurality of break points (i.e. locations marked DS1 and DS 2) are formed between each of the first dummy patterns 116 and the corresponding one of the first touch electrodes 112, and the width of each break point is less than or equal to 8 μm.

Referring to fig. 4, in the present embodiment, a line width of at least one of the first stem 112a of the first touch electrode 112, the second stem 112b of the first touch electrode 112, the first branch 112c of the first touch electrode 112, the second branch 112d of the first touch electrode 112, the first portion 116a of the first dummy pattern 116, and the second portion 116b of the first dummy pattern 116 is less than or equal to 8 μm. For example, in the present embodiment, the line width W112a of the first stem 112a of the first touch electrode 112, the line width W112b of the second stem 112b of the first touch electrode 112, the line width W112c of the first branch 112c of the first touch electrode 112, the line width W112d of the second branch 112d of the first touch electrode 112, the line width W116a of the first portion 116a of the first dummy pattern 116, and the line width W116b of the second portion 116b of the first dummy pattern 116 are all smaller than or equal to 8 μm, but the invention is not limited thereto.

Referring to fig. 3 and 5, each of the second touch electrodes 132 includes a plurality of third stems 132a extending substantially in the first direction d1 and a plurality of fourth stems 132b extending substantially in the second direction d2, wherein the third stems 132a and the fourth stems 132b intersect to form a plurality of second grids 132h, and each second grid 132h is defined by two sections 132as of two adjacent third stems 132a and two sections 132bs of two adjacent fourth stems 132 b. In short, in the present embodiment, each of the second touch electrodes 132 may be a metal mesh (metal mesh).

Referring to fig. 5, it is noted that in the present embodiment, each of the second touch electrodes 132 further includes a plurality of third branches 132c and a plurality of fourth branches 132d. The third branches 132c are structurally separated from each other, wherein the third branches 132c intersect two segments 132as of two adjacent third stems 132a of at least one second mesh 132 h. The fourth branches 132d are structurally separated from each other, wherein the fourth branches 132d intersect two segments 132bs of two adjacent fourth stems 132b of the at least one second lattice 132 h.

Referring to fig. 3 and 5, in the present embodiment, the third branches 132c and the fourth branches 132d of the second touch electrodes 132 are at least located in the first interlacing areas R1. In detail, in the present embodiment, the third branches 132c and the fourth branches 132d of the second touch electrodes 132 are located in the third interleaving regions R3 in addition to the first interleaving regions R1.

Referring to fig. 3 and 5, in the top view of the touch device 10, the third branches 132c and the fourth branches 132d of each second touch electrode 132 are separated from the first touch electrodes 112.

Referring to fig. 1, 3 and 5, similarly, since the second touch electrode 132 has the third branch 132c and the fourth branch 132d, the horizontal spacing S3 (shown in fig. 3) between the third branch 132c or the fourth branch 132d of the second touch electrode 132 and the first stem 112a or the second stem 112b of the first touch electrode 112 is smaller than the horizontal spacing S4 (shown in fig. 3) between the third stem 132a or the fourth stem 132b of the second touch electrode 132 and the first stem 112a or the second stem 112b of the first touch electrode 112; that is, the third branch 132c and/or the fourth branch 132d of the second touch electrode 132 are short from the first stem 112a or the second stem 112b of the first touch electrode 112; therefore, the third branch 132c and/or the fourth branch 132d of the second touch electrode 132 are beneficial to push the electric lines of force of the fringe-induced electric field between the first touch electrode 112 and the second touch electrode 132 toward the touch surface 10a, thereby increasing Cm and improving the performance (such as but not limited to touch sensitivity) of the touch device 10 related to Cm%.

Referring to fig. 3 and 5, in the present embodiment, the second conductive layer 130 of the touch device TS further includes a plurality of second dummy patterns 136 respectively disposed in the plurality of second grids 132h and separated from the plurality of second touch electrodes 132. Each of the second dummy patterns 136 includes a third portion 136a and a fourth portion 136b, wherein the third portion 136a and two fourth branches 132d on the corresponding second grid 132h are arranged in the first direction d1 and are structurally separated from each other, and the fourth portion 136b crosses the third portion 136a and two third branches 132c on the corresponding second grid 132h are arranged in the second direction d2 and are structurally separated from each other. In short, the second dummy pattern 136 may be a cross-shaped electrode located within the second mesh 132h of the second touch electrode 132.

Referring to fig. 5, in the present embodiment, a third portion 136a of each second dummy pattern 136 and one of the two fourth branches 132d on the corresponding second grid 132h have a third distance DS3, and the third distance DS3 is less than or equal to 8 μm; the fourth portion 136b of each second dummy pattern 136 has a fourth distance DS4 from one of the two third branches 132c on the corresponding second grid 132h, and the fourth distance DS4 is less than or equal to 8 μm. In short, in the present embodiment, a plurality of break points (i.e. the locations denoted by DS3 and DS 4) are formed between each of the second dummy patterns 136 and the corresponding one of the second touch electrodes 132, and the width of each break point is less than or equal to 8 μm.

Referring to fig. 5, in the present embodiment, a line width of at least one of the third stem 132a of the second touch electrode 132, the fourth stem 132b of the second touch electrode 132, the third branch 132c of the second touch electrode 132, the fourth branch 132d of the second touch electrode 132, the third portion 136a of the second dummy pattern 136, and the fourth portion 136b of the second dummy pattern 136 is less than or equal to 8 μm. For example, in the present embodiment, the line width W132a of the third stem 132a of the second touch electrode 132, the line width W132b of the fourth stem 132b of the second touch electrode 132, the line width W132c of the third branch 132c of the second touch electrode 132, the line width W132d of the fourth branch 132d of the second touch electrode 132, the line width W136a of the third portion 136a of the second dummy pattern 136 and the line width W136b of the fourth portion 136b of the second dummy pattern 136 are all smaller than or equal to 8 μm, but the invention is not limited thereto.

Fig. 7 is a schematic top view of a touch device 10' -1 of a first comparative example. The touch device 10' -1 of the first comparative example of fig. 7 is similar to the touch device 10 of the above-described embodiment, and the difference between them is that: the first conductive layer 110 of the touch device 10' -1 of the first comparative example includes the first touch electrode 112 and the first dummy electrode 114, but does not include the first dummy pattern 116 of the touch device 10 located in the first grid 112h of the first touch electrode 112; the first grid 112h of the first touch electrode 112 of the touch device 10' -1 of the first comparative example is smaller and more densely distributed than the first grid 112h of the first touch electrode 112 of the touch device 10 of the above embodiment; the first branch 112c and the second branch 112d of the touch device 10 of the above embodiment are not disposed on the first grid 112h of the touch device 10' -1 of the first comparative example; the second conductive layer 130 of the touch device 10' -1 of the first comparative example includes the second touch electrode 132 and the second virtual electrode 134, but does not include the second virtual pattern 136 of the touch device 10 of the above embodiment located in the second grid 132h of the second touch electrode 132; the second grid 132h of the second touch electrode 132 of the touch device 10' -1 of the first comparative example is smaller and more densely distributed than the second grid 132h of the second touch electrode 132 of the touch device 10 of the above embodiment; the third branch 132c and the fourth branch 132d of the touch device 10 of the above embodiment are not disposed on the second grid 132h of the touch device 10' -1 of the first comparative example.

Fig. 8 is a schematic top view of a touch device 10' -2 of a second comparative example. The touch device 10' -2 of the second comparative example of fig. 8 is similar to the touch device 10 of the above-described embodiment, and the difference between them is that: the first branch 112c and the second branch 112d of the touch device 10 of the above embodiment are not disposed on the first grid 112h of the touch device 10' -2 of the second comparative example; the first conductive layer 110 of the touch device 10' -2 of the second comparative example includes the first touch electrode 112 and the first dummy electrode 114, but does not include the first dummy pattern 116 of the touch device 10 of the above embodiment located in the second grid 112h of the first touch electrode 112; the second grid 112h of the first touch electrode 112 of the touch device 10' -2 of the second comparative example is smaller and more densely distributed than the first grid 112h of the first touch electrode 112 of the touch device 10 of the above embodiment; the third branch 132c and the fourth branch 132d of the touch device 10 of the above embodiment are not disposed on the second grid 132h of the touch device 10' -2 of the second comparative example.

Fig. 9 is a schematic top view of a touch device 10' -3 of a third comparative example. The touch device 10' -3 of the third comparative example of fig. 9 is similar to the touch device 10 of the above-described embodiment, and the difference between them is that: the first branch 112c and the second branch 112d of the touch device 10 of the above embodiment are not disposed on the first grid 112h of the touch device 10' -3 of the third comparative example; the third branch 132c and the fourth branch 132d of the touch device 10 of the above embodiment are not disposed on the second grid 132h of the touch device 10' -3 of the third comparative example.

Referring to the following table one, the data in the following table one refer to the data of one sensing unit of each of the comparative examples and the embodiments, wherein the sensing unit includes all the components of each of the comparative examples and the embodiments in one first interleaving region R1. The Cm in the following table is the sensing capacitance of the first touch electrode 112 and the second touch electrode 132 when no conductive object is disposed on the touch surface of each of the comparative examples and the embodiments. Cp in the following Table refers to the parasitic capacitance between the second touch electrode 132 and the common electrode 250. Δcm=cm-Cm 'in the following table, where Cm' refers to the sensing capacitance of the first touch electrode 112 and the second touch electrode 132 when the touch surface of each of the comparative examples and the embodiments is provided with the conductive object. The following table Cm% = [ (Cm-Cm ')/Cm ]. 100%, where Cm is the sensing capacitance of the first touch electrode 112 and the second touch electrode 132 when no conductive object (not shown) is disposed on the touch surface 10a, and Cm' is the sensing capacitance of the first touch electrode 112 and the second touch electrode 132 when a conductive object (not shown) is disposed on the touch surface 10 a.

The following table indicates that the touch device 10 according to an embodiment of the invention has at least one of the following advantages:

1. the number of the intersections between each first dummy pattern 116 and the corresponding first touch electrode 112 (i.e., the locations marked with DS1 and DS 2) and/or the number of the intersections between each second dummy pattern 136 and the corresponding second touch electrode 132 (i.e., the locations marked with DS3 and DS 4) can be reduced, so that the overall capacitance (i.e., cm+cp) can be effectively reduced and Cm can be increased; further adjusting the resistances of the first touch electrode 112 and the second touch electrode 132 (e.g., but not limited to, increasing the film thickness) can decrease the resistance capacitance load (RC Loading) of the touch device 10;

2. By disposing the first branch 112c and the second branch 112d on the first grid 112h of the first touch electrode 112 and/or disposing the third branch 132c and the fourth branch 132d on the second grid 132h of the second touch electrode 132, the power line of the fringe-induced electric field between the first touch electrode 112 and the second touch electrode 132 can be pushed up toward the touch surface 10a, so as to increase cm% and improve the performance (such as but not limited to touch sensitivity) of the touch device 10 related to cm%;

3. no moire (moire) and other visual effect problems.

TABLE one

Referring to fig. 3, 4 and 5, in the top view of the touch device 10, the first stems 112a of the first touch electrodes 112, the third stems 132a of the second touch electrodes 132, the first portions 116a of the first dummy patterns 116 and the third portions 136a of the second dummy patterns 136 are arranged along the second direction d2 at a pitch P1, the first portion 112c-1 of a first branch 112c of a first touch electrode 112 is located at one side of the corresponding first stem 112a, and the length of the first portion 112c-1 of the first branch 112c is a1, and 0.25·p1 is less than or equal to a1 and less than or equal to 0.75·p1.

Referring to fig. 3, 4 and 5, in the top view of the touch device 10, the second stems 112b of the first touch electrodes 112, the fourth stems 132b of the second touch electrodes 132, the second portions 116b of the first dummy patterns 116, and the fourth portions 136b of the second dummy patterns 136 are arranged along the first direction d1 at a pitch P2, the first portion 112d-1 of a second branch 112d of a first touch electrode 112 is located at one side of the corresponding second stem 112b, and the length of the first portion 112d-1 of the second branch 112d is a2, and 0.25·p2 is less than or equal to a2 and less than or equal to 0.75·p2.

Referring to the following table two, the data of the following table two refer to the data of one sensing unit of the first comparative example and the embodiment, and the following table two further refers to the data of one sensing unit of the touch device 10 of the embodiment under the relations of a1 and P1 and the relations of a2 and P2, in addition to the data of one sensing unit of the first comparative example. The data in Table II below demonstrates that 0.25.P1.ltoreq.a1.ltoreq.0.75.P1 and/or 0.25.P2.ltoreq.a2.ltoreq.0.75.P2 can increase Cm and enhance the performance (e.g., but not limited to: touch sensitivity) of the touch device 10 relative to Cm% without visual effects such as moire.

TABLE II

It should be noted that the following embodiments use the element numbers and part of the content of the foregoing embodiments, where the same numbers are used to denote the same or similar elements, and descriptions of the same technical content are omitted. Reference is made to the foregoing embodiments for an explanation of omitted parts, which will not be repeated.

Fig. 10 is a schematic top view of a touch device 10A according to an embodiment of the invention. The touch device 10A of fig. 10 is similar to the above-mentioned touch device 10, and the difference between them is that: the second conductive layer 130 of the touch device 10A of fig. 10 is different from the second conductive layer 130 of the touch device 10 described above.

Referring to fig. 10, in the embodiment, the second conductive layer 130 includes a second touch electrode 132 and a second dummy electrode 134, but does not include the second dummy pattern 136 of the touch device 10; the second grid 132h of the second touch electrode 132 of the touch device 10A is smaller and more densely distributed than the second grid 132h of the second touch electrode 132 of the above-mentioned touch device 10; the third branch 132c and the fourth branch 132d of the touch device 10 are not disposed on the second grid 132h of the touch device 10A.

Fig. 11 is a schematic top view of a touch device 10B according to an embodiment of the invention. The touch device 10B of fig. 11 is similar to the touch device 10 described above, and the difference between them is that: the first conductive layer 110 of the touch device 10B of fig. 11 is different from the first conductive layer 110 of the touch device 10 described above.

Referring to fig. 11, in the embodiment, the first conductive layer 110 includes a first touch electrode 112 and a first dummy electrode 114, but does not include the first dummy pattern 116 of the touch device 10; the first grid 112h of the first touch electrode 112 of the touch device 10B is smaller and more densely distributed than the first grid 112h of the first touch electrode 112 of the touch device 10; the first branch 112c and the second branch 112d of the touch device 10 are not disposed on the first grid 112h of the touch device 10B.

It should be noted that, in the embodiment of fig. 11, since the first grids 112h of the first touch electrodes 112 of the touch device 10B are densely distributed, and the first touch electrodes 112 belonging to the first conductive layer 110 are disposed between the second touch electrodes 132 belonging to the second conductive layer 130 and the display element DP (refer to fig. 1), the first touch electrodes 112 of the touch device 10B can provide better shielding effect, so as to reduce the mutual interference between the signals of the touch element TS and the signals of the display element DP.

Fig. 12 is a schematic top view of a touch device 10C according to an embodiment of the invention. Fig. 12 omits the first dummy electrode and the second dummy electrode. The touch device 10C of fig. 12 is similar to the touch device 10 described above, and the difference between the two is that: the first branch 112C and the third branch 132C of the touch device 10C of fig. 12 are different from the first branch 112C and the third branch 132C of the touch device 10.

Referring to fig. 12, in the embodiment, the first branch 112C of the touch device 10C includes a first portion 112C-1 and a second portion 112C-2 respectively located at opposite sides of a corresponding first trunk 112a, and a length a1 of the first portion 112C-1 of the first branch 112C is different from a length a2 of the second portion 112C-2 of the first branch 112C; the third branch 132C of the touch device 10C includes a first portion 132C-1 and a second portion 132C-2 respectively located at opposite sides of a corresponding third stem 132a, and a length a3 of the first portion 132C-1 of the third branch 132C is different from a length a4 of the second portion 132C-2 of the third branch 132C. In other words, the first branches 112C of the touch device 10C are asymmetrically distributed with respect to a first trunk 112a, and the third branches 132C of the touch device 10C are asymmetrically distributed with respect to a third trunk 132 a.

Fig. 13 is a schematic top view of a touch device 10D according to an embodiment of the invention. Fig. 13 omits the first dummy electrode and the second dummy electrode. The touch device 10D of fig. 13 is similar to the touch device 10C described above, and the difference between them is that: the second branch 112D and the fourth branch 132D of the touch device 10D in fig. 13 are different from the second branch 112D and the fourth branch 132D of the touch device 10C.

Referring to fig. 13, in the embodiment, the second branch 112D of the touch device 10D includes a first portion 112D-1 and a second portion 112D-2 respectively located at opposite sides of a corresponding second stem 112b, and a length a5 of the first portion 112D-1 of the second branch 112D is different from a length a6 of the second portion 112D-2 of the second branch 112D; the fourth branch 132D of the touch device 10D includes a first portion 132D-1 and a second portion 132D-2 respectively located at opposite sides of a corresponding fourth stem 132b, and a length a7 of the first portion 132D-1 of the fourth branch 132D is different from a length a8 of the second portion 132D-2 of the fourth branch 132D. In other words, in the embodiment of the touch device 10D, in addition to the first branches 112c being asymmetrically distributed with respect to the first main portion 112a and the third branches 132c being asymmetrically distributed with respect to the third main portion 132a, the second branches 112D are also asymmetrically distributed with respect to the second main portion 112b, and the fourth branches 132D are also asymmetrically distributed with respect to the fourth main portion 132 b.

Fig. 14 is a schematic top view of a touch device 10E according to an embodiment of the invention.

Fig. 15 illustrates a first conductive layer 110 of the touch element TS of the touch device 10E of fig. 14.

Fig. 16 illustrates a second conductive layer 130 of the touch element TS of the touch device 10E of fig. 14.

Fig. 17 illustrates the plurality of first dummy patterns 116, the plurality of second dummy patterns 136, and the staggered one first touch electrode 112 and one second touch electrode 132 of the touch device 10E of fig. 14.

The touch device 10E of fig. 14 to 17 is similar to the touch device 10 of fig. 3 to 6, and the difference between them is that: the pattern of the first touch electrode 112 of the touch device 10E in the second staggered area R2 is different from the pattern of the first touch electrode 112 of the touch device 10 in the second staggered area R2; the pattern of the second touch electrode 132 of the touch device 10E in the third staggered area R3 is different from the pattern of the second touch electrode 132 of the touch device 10 in the third staggered area R3.

Referring to fig. 3 and 4, in the embodiment of the touch device 10, the number density of the first grids 112h of the first touch electrode 112 on the first interleaved region R1 is substantially equal to the number density of the first grids 112h on the second interleaved region R2, and the sizes and shapes of the first grids 112h of the first touch electrode 112 on the first interleaved region R1 and the second interleaved region R2 are the same.

Referring to fig. 14, 15 and 17, in the embodiment of the touch device 10E, the number density of the first grids 112h of the first touch electrode 112 is greater on a second interleaved region R2 than on a first interleaved region R1. In the embodiment of the touch device 10E, a width C1 (shown in fig. 17) of a first grid 112h in a first direction D1 of a first interleaved region R1 is larger than a width D1 (shown in fig. 17) of a first grid 112h in a second direction D1 of a second interleaved region R2; a width C2 (shown in fig. 17) of a first grid 112h in a second direction D2 in a first interleaved region R1 is greater than a width D2 (shown in fig. 17) of a first grid 112h in a second direction D2 in a second interleaved region R2; the area of a first grid 112h on a first interlacing area R1 is larger than the area of a first grid 112h on a second interlacing area R2.

Referring to fig. 14, 16 and 17, in addition, in the embodiment of the touch device 10E, the number density of the second grids 132h of the second touch electrode 132 is greater on a third interleaved region R3 than on a first interleaved region R1. In the embodiment of the touch device 10E, a width A1 (shown in fig. 17) of a second grid 132h in a first direction d1 of a first interleaved region R1 is larger than a width B1 (shown in fig. 17) of a second grid 132h in a third direction d1 of a third interleaved region R3; a width A2 (shown in fig. 17) of a second grid 132h in a second direction d2 of a first interlacing area R1 is greater than a width B2 (shown in fig. 17) of a second grid 132h in a third interlacing area R3 in the second direction d 2; the area of a second grid 132h on a first interlacing area R1 is larger than the area of a second grid 132h on a third interlacing area R3.

Referring to fig. 14, in short, in the present embodiment, the first touch electrode 112 is a metal grid with a higher density and no break point at a portion not interlaced with the second touch electrode 132 (i.e. the second interlacing region R2); the second touch electrode 132 is a metal grid with a higher density and no break point at a portion not staggered with the first touch electrode 112 (i.e., the third staggered region R3). Therefore, the resistance of the first touch electrode 112 is low, and the resistance of the second touch electrode 132 is low, which is helpful to reduce the capacitive-resistive load of the touch device 10C.

In addition, in the present embodiment, the first touch electrode 112 is a metal grid with a higher density at a position not crossed with the second touch electrode 132 (i.e. the second crossed region R2), and the first grid 112h with a higher density on the second crossed region R2 of the first touch electrode 112 and the second touch electrode 132 also form an edge-induced electric field, which also helps to increase cm% of the touch device 10C.

Referring to the following table three, the conductive resistance value of the following table three refers to the sum of the resistance values of all the first touch electrodes 112 and all the second touch electrodes 132 in each embodiment, and Cm% = [ (Cm-Cm ')/Cm ]. Times.100%, where Cm is the sensing capacitance of the first touch electrode 112 and the second touch electrode 132 when no conductive material (not shown) is disposed on the touch surface 10a, and Cm' is the sensing capacitance of the first touch electrode 112 and the second touch electrode 132 when a conductive material (not shown) is disposed on the touch surface 10 a.

The following table three shows various data of the touch device 10 of the foregoing embodiment and the touch device 10E of the present embodiment, and the data of the following table three proves that, under the condition of no problem of visual effects such as moire (moire), the resistance value of the wires of the touch device 10E of the present embodiment is lower than that of the touch device 10 of the foregoing embodiment, which is helpful for further reducing the resistance-capacitance load of the touch device 10E; the cm% of the touch device 10E of the present embodiment is greater than the cm% of the touch device 10 of the foregoing embodiment, which is helpful for further improving the performance (such as but not limited to touch sensitivity, etc.) of the touch device 10E related to cm%.

TABLE III

Fig. 18 is a schematic top view of a touch device 10F according to an embodiment of the invention. The touch device 10F of fig. 18 is similar to the touch device 10E of fig. 14, and the difference between them is that: the second conductive layer 130 of the touch device 10F is different from the second conductive layer 130 of the touch device 10E.

Referring to fig. 18, in the embodiment, the second conductive layer 130 includes a second touch electrode 132 and a second dummy electrode 134, but does not include the second dummy pattern 136 of the touch device 10E. In addition, the number density of the second grid 132h of the second touch electrode 132 of the touch device 10F in the first interleaved region R1 is substantially the same as the number density of the second grid in the third interleaved region R3. In addition, the third branch 132c and the fourth branch 132d of the touch device 10E are not disposed on the second grid 132h of the touch device 10F in the first interleaved region R1. Furthermore, in the same first interlacing area R1, the number density of the plurality of second grids 132h is greater than the number density of the plurality of first grids 112 h.

Fig. 19 is a schematic top view of a touch device 10G according to an embodiment of the invention. The touch device 10G of fig. 19 is similar to the touch device 10E of fig. 14, and the difference between them is that: the first conductive layer 110 of the touch device 10G is different from the first conductive layer 110 of the touch device 10E.

Referring to fig. 19, in the embodiment, the first conductive layer 110 includes the first touch electrode 112 and the first dummy electrode 114, but does not include the first dummy pattern 116 of the touch device 10E. In addition, the number density of the first grid 112h of the first touch electrode 112 of the touch device 10G in the first interleaved region R1 is substantially the same as the number density of the first grid in the second interleaved region R2. In addition, the first branch 112c and the second branch 112d of the touch device 10E are not disposed on the first grid 112h of the touch device 10G in the first interleaved region R1.

Fig. 20 is a schematic top view of a touch device 10H according to an embodiment of the invention. The touch device 10h of fig. 20 is similar to the touch device 10E of fig. 14, and the difference between them is that: the first touch electrode 112 of the touch device 10H is different from the first touch electrode 112 of the touch device 10E; the second touch electrode 132 of the touch device 10H is different from the second touch electrode 132 of the touch device 10E.

Referring to fig. 20, in the embodiment, the first touch electrode 112 of the touch device 10H does not have the first branch 112c and the second branch 112d; the second touch electrode 132 of the touch device 10H does not have the third branch 132c and the fourth branch 132d.

Claims

1. A touch device, comprising:

the first touch electrodes include:

a plurality of first trunks extending in a first direction;

the first trunks are crossed with the second trunks to form a plurality of first grids, and each first grid is defined by two sections of two adjacent first trunks and two sections of two adjacent second trunks;

a plurality of first branches structurally separated from each other, wherein the first branches intersect the two sections of the adjacent two first trunks of at least one first mesh of the first meshes; and

a plurality of second branches structurally separated from each other, wherein the second branches intersect the two sections of the adjacent two second trunks of the at least one first mesh of the plurality of first meshes; and

The second touch electrodes are staggered with the first touch electrodes to define a plurality of first staggered areas;

the first branches and the second branches of the first touch electrodes are at least located in the first interlacing areas; in a top view of the touch device, the first branches and the second branches of each first touch electrode are separated from the second touch electrodes.

2. The touch device of claim 1, further comprising:

the first virtual patterns are respectively arranged in the first grids and separated from the first touch electrodes, and each first virtual pattern comprises:

a first portion, which is arranged in the first direction with two second branches on a corresponding first grid and is separated from each other in structure; and

a second part crossing the first part and corresponding two first branches on the first grid are arranged in the second direction and separated from each other structurally.

3. The touch device of claim 2, wherein the first portion of each first dummy pattern has a first distance from one of the two second branches on the corresponding first grid, and the second portion of each first dummy pattern has a second distance from one of the two first branches on the corresponding first grid.

4. The touch device of claim 1, wherein a first branch of a first touch electrode comprises a first portion and a second portion respectively located at opposite sides of a corresponding first trunk, and a length of the first portion of the first branch is different from a length of the second portion of the first branch.

5. The touch device of claim 1, wherein each second touch electrode comprises:

a plurality of third stems extending in the first direction;

a plurality of fourth trunks extending in the second direction, wherein a plurality of third trunks intersect with a plurality of fourth trunks to form a plurality of second grids, each second grid being defined by two sections of two adjacent third trunks and two sections of two adjacent fourth trunks;

a plurality of third branches structurally separated from each other, wherein the third branches intersect the two sections of the adjacent two third trunks of at least one of the second grids; and

a plurality of fourth branches structurally separated from each other, wherein the fourth branches intersect the two sections of the adjacent two fourth trunks of at least one of the second grids;

The third branches and the fourth branches of the second touch electrodes are at least located in the first interlacing areas.

6. The touch device of claim 5, wherein in a top view of the touch device, the third branches and the fourth branches of each second touch electrode are separated from the first touch electrodes.

7. The touch device of claim 5, further comprising:

the plurality of second dummy patterns are respectively arranged in the plurality of second grids and separated from the plurality of second touch electrodes, wherein each second dummy pattern comprises:

a third portion, which is arranged in the first direction with two fourth branches on a corresponding second grid and is separated from each other in structure; and

a fourth part crossing the third part and two third branches corresponding to the second grid are arranged in the second direction and separated from each other structurally.

8. The touch device of claim 7, wherein the third portion of each second dummy pattern has a third distance from one of the two fourth branches on the corresponding second grid, and the fourth portion of each second dummy pattern has a fourth distance from one of the two third branches on the corresponding second grid.

9. The touch device of claim 5, further comprising:

the first virtual patterns are respectively arranged in the first grids and separated from the first touch electrodes, wherein each first virtual pattern comprises a first part and a second part, and the first part and two second branches on the corresponding first grid are arranged in the first direction and are separated from each other structurally; the second part is intersected with the first part, and is arranged in the second direction with two corresponding first branches on the first grid and is separated from each other in structure; and

the second virtual patterns are respectively arranged in the second grids and separated from the second touch electrodes, wherein each second virtual pattern comprises a third part and a fourth part, and the third part and two fourth branches on the corresponding second grid are arranged in the first direction and are separated from each other structurally; the fourth part is intersected with the third part, and is arranged in the second direction with two corresponding third branches on the second grid and is separated from each other in structure;

in a top view of the touch device, a plurality of first stems of the plurality of first touch electrodes, a plurality of first portions of the plurality of first dummy patterns, a plurality of third stems of the plurality of second touch electrodes, and a plurality of third portions of the plurality of second dummy patterns are arranged at a pitch of P1, a first portion of a first branch of a first touch electrode is located at one side of a corresponding first stem, a length of the first portion of the first branch is a1, and 0.25·p1 is less than or equal to a1 and less than or equal to 0.75·p1.

10. The touch device of claim 1, wherein each second touch electrode comprises:

a plurality of third stems extending in the first direction; and

a plurality of fourth stems extending in the second direction, wherein a plurality of the third stems intersect the plurality of fourth stems to form a plurality of second meshes;

in the same first staggered area, the number density of the plurality of second grids is larger than that of the plurality of first grids.

11. A touch device, comprising:

a plurality of first touch electrodes;

the touch control device comprises a plurality of first virtual electrodes, a plurality of second touch control electrodes and a plurality of first touch control electrodes, wherein each first virtual electrode is arranged between two adjacent first touch control electrodes;

a plurality of second touch electrodes; and

the plurality of second virtual electrodes are arranged between two adjacent ones of the plurality of second touch electrodes;

the first touch electrodes and the second touch electrodes are staggered to define a plurality of first staggered areas;

the first touch electrodes and the second virtual electrodes are staggered to define a plurality of second staggered areas;

the second touch electrodes are staggered with the first virtual electrodes so as to define a plurality of third staggered areas;

Each first touch electrode comprises a plurality of first trunks extending in a first direction and a plurality of second trunks extending in a second direction; the first direction is staggered with the second direction; a plurality of the first trunks intersect a plurality of the second trunks to form a plurality of first grids; each first grid is defined by two sections of two adjacent first trunks and two sections of two adjacent second trunks;

the number density of the plurality of first grids is greater on a second interleaving region than on a first interleaving region.

12. The touch device of claim 11, wherein a width of one of the plurality of first grids on the first staggered region is greater than a width of another one of the plurality of first grids on the second staggered region.

13. The touch device of claim 11, wherein each of the first touch electrodes further comprises:

a plurality of second branches structurally separated from each other, wherein the second branches intersect the two sections of the adjacent two second trunks of the at least one first mesh of the plurality of first meshes;

The first branches and the second branches of the first touch electrodes are located in the first interlacing areas.

14. The touch device of claim 13, wherein in a top view of the touch device, the plurality of first branches and the plurality of second branches of each first touch electrode are separated from the plurality of second touch electrodes.

15. The touch device of claim 13, further comprising:

16. The touch device of claim 11, wherein each second touch electrode comprises a plurality of third stems extending in the first direction and a plurality of fourth stems extending in the second direction; a plurality of the third trunks intersect a plurality of the fourth trunks to form a plurality of second grids; each second grid is defined by two sections of two adjacent third trunks and two sections of two adjacent fourth trunks; the number density of the plurality of second grids is greater on a third staggered area than on a first staggered area.

17. The touch device of claim 16, wherein each of the second touch electrodes further comprises:

the third branches and the fourth branches of the second touch electrodes are located in the first interleaving areas.

18. The touch device of claim 17, wherein in a top view of the touch device, the third and fourth branches of each second touch electrode are separated from the first touch electrodes.

19. The touch device of claim 16, further comprising: