TWI836888B - Touch display apparatus - Google Patents

Abstract

The touch display apparatus includes a first substrate, a second substrate, a display medium, a light-shielding structure and a touch structure. First light shielding portions and second light shielding portions of the light-shielding structure are interlaced to define sub-pixel regions. The touch structure includes a mesh electrode having first mesh lines and second mesh lines interlaced with each other. The first mesh lines and the second mesh lines have intersection points, and these intersection points include an intersection point, a previous intersection point of the intersection point and a next intersection point of the intersection point located on an identical first mesh line. In a top view of the touch display apparatus, the previous intersection point and the next intersection point have a first distance in a first direction, the previous intersection point and the next intersection point have a second distance in a second direction, the first distance is substantially equal to a length of a sub-pixel region, and the second distance is substantially equal to three times the width of the sub-pixel region.

Description

touch display device

The present invention relates to an electronic device, and in particular to a touch display device.

In recent years, with the rapid development of information technology, wireless mobile communications, and information appliances, in order to achieve more convenient, more compact, and more user-friendly purposes, the input devices of many information products have changed from traditional keyboards or mice to touch devices. Generally speaking, if classified by sensing principle, the sensing methods of touch devices can be roughly divided into resistive, capacitive, optical, acoustic, and electromagnetic types. Taking capacitive touch devices as an example, they can be divided into self-capacitive touch and mutual capacitive touch according to their motion and sensing methods.

The mutual capacitive touch device includes a plurality of first touch electrodes extending along a first direction and a plurality of second touch electrodes extending along a second direction, where the first direction and the second direction are different. When an object (such as a stylus) touches the touch device, the capacitance between the first and second touch electrodes will be changed; this change signal is sent back to the controller, and the coordinates of the point where the contact occurs can be calculated.

The touch structure including the above-mentioned first touch electrode and second touch electrode can be integrated with the display panel to form a touch display device. Generally speaking, in order to reduce the impact of the touch structure on the overall aperture ratio, the first touch electrode and the second touch electrode are designed in a mesh shape. However, the mesh lines of the first touch electrode and the second touch electrode are still opaque and will cause a certain degree of loss in the aperture ratio. Therefore, how to configure the network cables of the first touch electrode and the second touch electrode to further reduce the impact of the touch structure on the aperture ratio is actually one of the issues for developers.

The present invention provides a touch display device with a high opening rate.

The touch display device of the present invention includes a first substrate, a second substrate, a display medium, a light-shielding structure and a touch sensing structure. The second substrate is disposed opposite to the first substrate. The display medium is disposed between the first substrate and the second substrate. The light-shielding structure is located between the first substrate and the second substrate. The light-shielding structure includes a plurality of first light-shielding parts and a plurality of second light-shielding parts. In a top view of the touch display device, a plurality of first light-shielding portions intersect with a plurality of second light-shielding portions to define a plurality of sub-pixel regions. The first direction is substantially perpendicular to the plurality of first light shielding parts. The second direction is substantially perpendicular to the first direction. Each sub-pixel area has a length and a width respectively in the first direction and the second direction, and the length is greater than the width. The second substrate has an outer surface facing away from the display medium, and the touch sensing structure is disposed on the outer surface of the second substrate. The touch sensing structure includes a mesh electrode with a plurality of first network lines and a plurality of second network lines interlaced with each other. In a top view of the touch display device, the plurality of first mesh lines and the plurality of second mesh lines of the mesh electrode intersect with the plurality of first light shielding portions and the plurality of second light shielding portions of the light shielding structure. The plurality of first network lines and the plurality of second network lines have multiple intersection points, and these intersection points include an intersection point located on the same first network line, a previous intersection point of the one intersection point, and a next intersection point of the one intersection point. In the top view of the touch display device, there is a first distance between the previous intersection point and the next intersection point in the first direction, and there is a second distance between the previous intersection point and the next intersection point in the second direction. The first distance is substantially equal to one subdivision. The length of the pixel area, and the second distance is substantially equal to three times the width of a sub-pixel area.

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

It should 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 may be directly on or connected to another element, or an intermediate element may also exist. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intermediate elements. As used herein, "connected" may refer to physical and/or electrical connections. Furthermore, "electrically connected" or "coupled" may mean that there are other elements between two elements.

As used herein, "about," "approximately," or "substantially" includes the stated value and the average within an acceptable range of deviations from the particular value as determined by one of ordinary skill in the art, taking into account the measurements in question and the A specific amount of error associated with a measurement (i.e., the limitations of the measurement system). For example, "about" may mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, the terms "about", "approximately" or "substantially" used herein may be used to select a more acceptable deviation range or standard deviation based on optical properties, etching properties or other properties, and one standard deviation may not apply to all properties. .

Unless otherwise defined, 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 construed to have meanings consistent with their meanings in the context of the relevant technology and the present invention, and are not to be construed as idealistic or excessive Formal meaning, unless expressly defined as such herein.

FIG. 1 is a cross-sectional schematic diagram of a touch display device according to an embodiment of the present invention.

Referring to FIG. 1 , the touch display device 10 includes a display panel 100. The display panel 100 includes a first substrate 110, a second substrate 120 disposed opposite to the first substrate 110, and a display medium 130 disposed between the first substrate 110 and the second substrate 120. In the present embodiment, the materials of the first substrate 110 and the second substrate 120 may be glass, quartz, organic polymer or other applicable materials. In the present embodiment, the display medium 130 may be a non-self-luminous display medium (e.g., liquid crystal, etc.). However, the present invention is not limited thereto, and in other embodiments, the display medium 130 may also be a self-luminous display medium (e.g., micro-light-emitting diode elements, organic electroluminescent materials, etc.).

The display panel 100 further includes a light shielding structure 140, which is located between the first substrate 110 and the second substrate 120. The light shielding structure 140 is commonly known as a black matrix. In this embodiment, the material of the light shielding structure 140 is, for example, black resin. However, the present invention is not limited thereto, and in other embodiments, the material of the light shielding structure 140 may also be blackened metal or other materials with low reflectivity.

The display panel 100 further includes a pixel array layer 150 located between the first substrate 110 and the display medium 130 . In this embodiment, the light-shielding structure 140 can be selectively disposed between the second substrate 120 and the display medium 130 . That is to say, in this embodiment, the pixel array layer 150 and the light-shielding structure 140 can be selectively disposed on the first substrate 110 and the second substrate 120 respectively. However, the present invention is not limited to this. In other embodiments, the pixel array layer 150 and the light-shielding structure 140 can also be disposed on the same substrate (for example, both are disposed on the first substrate 110) to form a black matrix in the array. The structure of Black Matrix on Array (BOA).

In this embodiment, the display panel 100 may further include an upper polarizer 160 and a lower polarizer 170, which are disposed on the upper and lower sides of the display medium 130, respectively; the upper polarizer 160 and the lower polarizer 170 are used in conjunction with the display medium 130 (e.g., liquid crystal), so that the display panel 100 can display images. However, the present invention is not limited thereto, and in other embodiments, the upper polarizer 160 and/or the lower polarizer 170 may also be omitted.

In this embodiment, the display panel 100 may further selectively include a color filter layer 180 disposed between the first substrate 110 and the second substrate 120, so that the display panel 100 can display color images. However, the present invention is not limited thereto, and in other embodiments, if the display medium 130 has the ability to emit multiple colors of light, or the display panel 100 does not need to display color images, the color filter layer 180 may be omitted.

The touch display device 10 further includes a touch sensing structure 200 , wherein the second substrate 120 of the display panel 100 has an outer surface 122 facing away from the display medium 130 , and the touch sensing structure 200 is disposed on the outer surface of the second substrate 120 122 on. For example, in this embodiment, the touch sensing structure 200 can be directly formed on the outer surface 122 of the second substrate 120 of the display panel 100 to form an on-cell touch display device 10 . In this embodiment, there is a distance T between the mesh electrode MS (refer to FIG. 3 ) of the touch sensing structure 200 and the outer surface 122 of the second substrate 120, and the distance T is less than 10 μm.

In this embodiment, the touch display device 10 may further include a cover lens 300 disposed above the display panel 100 and covering the touch sensing structure 200 . The cover plate 300 is used to protect the touch sensing structure 200 and the display panel 100 below it. The material of the covering plate 300 is preferably selected to have high light transmittance and high hardness. For example, in this embodiment, the material of the cover plate 300 may be sapphire. However, the present invention is not limited thereto. In other embodiments, the material of the cover plate 300 may also be other appropriate materials.

FIG2 is a schematic top view of a touch sensing structure of an embodiment of the present invention. Referring to FIG1 and FIG2 , the touch sensing structure 200 is disposed on the outer surface 122 of the second substrate 120. Referring to FIG2 , in this embodiment, the touch sensing structure 200 includes a first touch electrode 210, a second touch electrode 220, and a pseudo-electrode 230. The first touch electrode 210 includes a plurality of first touch portions 212 in a mesh shape and a first bridge portion 214 electrically connecting the plurality of first touch portions 212. The second touch electrode 220 includes a plurality of second touch portions 222 in a mesh shape and a second bridge portion 224 electrically connecting the plurality of second touch portions 222. The first bridge portion 214 of the first touch electrode 210 and the second bridge portion 224 of the second touch electrode 220 span and are electrically isolated from each other. There is a gap g between the first touch electrode 210 and the second touch electrode 220. The pseudo-electrode 230 is disposed in the gap g between the first touch electrode 210 and the second touch electrode 220 and is separated from the first touch electrode 210 and the second touch electrode 220. The pseudo-portion 232 of the pseudo-electrode 230 may be in a mesh shape. One of the first touch electrode 210 and the second touch electrode 220 is a transmitting electrode, the other of the first touch electrode 210 and the second touch electrode 220 is a receiving electrode, and the dummy electrode 230 is electrically isolated from the first touch electrode 210 and the second touch electrode 220 .

Fig. 3 is a top view of a touch display device according to an embodiment of the present invention. Fig. 3 shows the light shielding structure 140 and the mesh electrode MS of the touch sensing structure 200, while omitting other components.

1 and 3 , the touch sensing structure 200 includes a mesh electrode MS, wherein the mesh electrode MS has a plurality of first mesh lines L1 and a plurality of second mesh lines L2 that are interlaced with each other. Referring to FIG. 2 and 3 , the mesh electrode MS may refer to a first touch portion 212 of a first touch electrode 210, a second touch portion 222 of a second touch electrode 220, and/or a pseudo portion 232 of a pseudo electrode 230. In this embodiment, the line width s of the first mesh line L1/the second mesh line L2 may fall within a range of 3 μm to 10 μm. It should be noted that FIG2 schematically illustrates the first touch electrode 210, the second touch electrode 220 and the pseudo-electrode 230 to illustrate the relative relationship between the three; the first touch portion 212 of the first touch electrode 210, the second touch portion 222 of the second touch electrode 220 and the pseudo-electrode 230 in FIG2 are schematically drawn in a mesh shape, and the actual appearance of the first touch portion 212 of the first touch electrode 210, the second touch portion 222 of the second touch electrode 220 and the pseudo-electrode 230 is based on the mesh electrode MS drawn in FIG3.

3 , the light shielding structure 140 includes a plurality of first light shielding portions 141 and a plurality of second light shielding portions 142. In the top view of the touch display device 10, the plurality of first light shielding portions 141 and the plurality of second light shielding portions 142 are interlaced to define a plurality of sub-pixel regions SPX, the first direction d1 is substantially perpendicular to the first light shielding portions 141, the second direction d2 is substantially perpendicular to the first direction d1, and each sub-pixel region SPX has a length L and a width W in the first direction d1 and the second direction d2, respectively, and the length L is greater than the width W.

In the top view of the touch display device 10 , the plurality of first mesh lines L1 and the plurality of second mesh lines L2 of the mesh electrode MS and the plurality of first light shielding portions 141 and the plurality of second light shielding portions 142 of the light shielding structure 140 Interleaved, the plurality of first network lines L1 and the plurality of second network lines L2 have multiple intersection points p. The multiple intersection points p include an intersection point p1 located on the same first network line L1 and the previous intersection point of the intersection point p1. The next intersection point p2 between p0 and the one intersection point p1, the previous intersection point p0 and the next intersection point p2 have a first distance D1 in the first direction d1, and the first distance D1 is substantially equal to the length L of the sub-pixel area SPX, The previous intersection point p0 and the next intersection point p2 have a second distance D2 in the second direction d2, and the second distance D2 is substantially equal to three times the width W of the sub-pixel area SPX. In this embodiment, the second distance D2 is greater than the first distance D1.

The mesh electrode MS includes a plurality of repeating units SMS. Each repeating unit SMS includes at least one intersection point p, and the mesh electrode MS can be spliced by multiple repeating units SMS. Each repeating unit SMS has a length l in the second direction d2, each repeating unit SMS has a width w in the first direction d1, and the length l is greater than the width w. It is worth noting that the direction in which the length l of the repeating unit SMS of the mesh electrode MS is arranged (i.e., the second direction d2) is substantially perpendicular to the direction in which the length L of the sub-pixel region SPX is arranged (i.e., the first direction d1), and The first distance D1 between the previous intersection point p0 and the next intersection point p2 of the mesh electrode MS in the first direction d1 is substantially equal to the length L of the sub-pixel area SPX, and the previous intersection point p0 and the next intersection point p2 are in the second direction d1. The second distance D2 in the direction d2 is substantially equal to three times the width W of the sub-pixel region SPX. Thereby, the area occupied by the light-blocking first network line L1 and the second network line L2 in the sub-pixel area SPX can be reduced, thereby improving the overall aperture ratio of the touch display device 10 .

Fig. 4 is a schematic top view of a touch display device of a comparative example. Fig. 4 shows the light shielding structure 140 and the mesh electrode MS of the touch sensing structure 200, while omitting other components.

The touch display device 10' of the comparative example of FIG4 is similar to the touch display device 10 of the embodiment of FIG3, and the difference between the two is that the arrangement direction of the mesh electrode MS of the touch display device 10' of FIG4 is different from the arrangement direction of the mesh electrode MS of the touch display device 10 of FIG3. In detail, in the comparative example of FIG4, the arrangement direction of the length l of the repeating unit SMS of the mesh electrode MS (i.e., the first direction d1) and the arrangement direction of the length L of the sub-pixel area SPX (i.e., the first direction d1) are substantially parallel. The overall opening rate of the touch display device 10' of the comparative example of FIG4 is 60.99%. The overall opening rate of the touch display device 10 of the embodiment of FIG3 is 61.23%. Compared to the comparative example of FIG. 4 , the embodiment of FIG. 3 can increase the opening rate by 0.24% by designing that “the arrangement direction of the length l of the repeated unit SMS of the mesh electrode MS is substantially perpendicular to the arrangement direction of the length L of the sub-pixel area SPX”.

Please refer to FIG. 3 . In this embodiment, multiple sub-pixel areas SPX are arranged into multiple sub-pixel area rows Rspx. Each sub-pixel area row Rspx includes multiple sub-pixel areas SPX arranged in the second direction d2. ; The third direction d3 intersects the first direction d1 and the second direction d2; In the top view of the touch display device 10, the previous intersection points p0 and p1 of the plurality of first network lines L1 and the plurality of second network lines L2 and the next intersection p2 are arranged in the third direction d3 and are substantially located in the same sub-pixel region Rspx.

3, in this embodiment, the same sub-pixel region row Rspx includes a first pixel region SPX1, a second pixel region SPX2, a third pixel region SPX3, and a fourth pixel region SPX4 arranged in sequence in the second direction d2, and the previous intersection point p0, the intersection point p1, and the next intersection point p2 of the plurality of first reticle lines L1 and the plurality of second reticle lines L2 are located in the first pixel region SPX1, the second pixel region SPX2, and the fourth pixel region SPX4, respectively. In this embodiment, the previous intersection point p0, the intersection point p1, and the next intersection point p2 of the plurality of first reticle lines L1 and the plurality of second reticle lines L2 do not overlap with the light shielding structure 140. However, the present invention is not limited thereto. In other embodiments, the previous intersection point p0, the intersection point p1 and the next intersection point p2 of the plurality of first mesh lines L1 and the plurality of second mesh lines L2 may also overlap with the light shielding structure 140, which will be explained below with reference to other figures.

It should be noted that the following embodiments use the same component numbers and some contents of the previous embodiments, wherein the same number is used to represent the same or similar components, and the description of the same technical contents is omitted. The description of the omitted parts can be referred to the previous embodiments, and the following embodiments will not be repeated.

FIG. 5 is a schematic top view of a touch display device according to another embodiment of the present invention. FIG. 5 shows the light-shielding structure 140 and the mesh electrode MS of the touch sensing structure 200, while other components are omitted.

The touch display device 10A of FIG5 is similar to the touch display device 10 of FIG3 , and the difference between the two is that the relative positions of the light shielding structure 140 and the mesh electrode MS of the two are slightly different. Please refer to FIG4 , specifically, in this embodiment, a plurality of sub-pixel areas SPX are arranged into a plurality of sub-pixel area rows Rspx, and each sub-pixel area row Rspx includes a plurality of sub-pixel areas SPX arranged in the second direction d2; the third direction d3 intersects with the first direction d1 and the second direction d2; in the top view of the touch display device 10, the previous intersection point p0, the intersection point p1 and the next intersection point p2 of the plurality of first mesh lines L1 and the plurality of second mesh lines L2 are arranged in the third direction d3 and all overlap the light shielding structure 140.

In this embodiment, the plurality of first light-shielding portions 141 of the light-shielding structure 140 include one first light-shielding portion 141 arranged in the first direction d1 and the next first light-shielding portion 141 of the one first light-shielding portion 141. The second light shielding part 142 includes a second light shielding part 142 located between the one first light shielding part 141 and the next first light shielding part 141, a plurality of first network lines L1 and a plurality of second network lines L2. The previous intersection point p0, the intersection point p1 and the next intersection point p2 overlap with the first light shielding part 141, the second light shielding part 142 and the next first light shielding part 141 respectively.

In detail, in the present embodiment, the same sub-pixel area row Rspx includes a first pixel area SPX1, a second pixel area SPX2, a third pixel area SPX3 and a fourth pixel area SPX4 arranged in sequence in the second direction d2, the previous intersection p0 overlaps with the intersection of a first light shielding portion 141 and a second light shielding portion 142 defining the upper right corner of the first pixel area SPX1, the intersection p1 overlaps with another second light shielding portion 142 separating the second pixel area SPX2 and the third pixel area SPX3, and the next intersection p2 overlaps with the intersection of another first light shielding portion 141 and another second light shielding portion 142 defining the lower right corner of the fourth pixel area SPX4.

In this embodiment, since the intersections p of the plurality of first mesh lines L1 and the plurality of second mesh lines L2 of the mesh electrode MS overlap the light shielding structure 140, the overall opening ratio of the touch display device 10A can be further increased to 61.34%.

FIG. 6 is a schematic top view of a touch display device according to another embodiment of the present invention. FIG. 6 shows the light-shielding structure 140 and the mesh electrode MS of the touch sensing structure 200, while other components are omitted.

The touch display device 10B of FIG. 6 is similar to the touch display device 10 of FIG. 3 , and the difference between the two is that the shapes of the first network cable L1 and the second network cable L2 of the touch display device 10B of FIG. 6 are different from the shapes of the first network cable L1 and the second network cable L2 of the touch display device 10 of FIG. 3 .

Specifically, in the embodiment of FIG. 3 , the first network cable L1 (the second network cable L2) includes a plurality of first straight line segments L1a (a plurality of second straight line segments L2a) connected end to end, wherein the adjacent plurality of first straight line segments L1a (a plurality of second straight line segments L2a) have different extension directions, and the plurality of first straight line segments L1a (a plurality of second straight line segments L2a) are connected to form a first network cable L1 (a plurality of second network cable L2) in the shape of a broken line; in the embodiment of FIG. 6 , the first network cable L1 (the second network cable L2) includes a plurality of first straight line segments L1a and a plurality of first arc segments L1b (a plurality of second straight line segments L2a and a plurality of second arc segments L2b) that are alternately arranged and connected end to end.

Fig. 7 is a top view schematic diagram of a touch display device according to another embodiment of the present invention. Fig. 7 shows the light shielding structure 140 and the mesh electrode MS of the touch sensing structure 200, while omitting other components.

The touch display device 10C of FIG. 7 is similar to the touch display device 10 of FIG. 3 , and the difference between the two is that the shapes of the first network cable L1 and the second network cable L2 of the touch display device 10C of FIG. 7 are different from the shapes of the first network cable L1 and the second network cable L2 of the touch display device 10 of FIG. 3 .

Specifically, in the embodiment of FIG. 7 , the first network line L1 (the second network line L2) includes a plurality of first arc segments L1b and a plurality of third arc segments L1c (a plurality of second arc segments L2b and A plurality of fourth arc segments L2c), a plurality of first arc segments L1b and a plurality of third arc segments L1c (a plurality of second arc segments L2b and a plurality of fourth arc segments L2c) have different bending directions, and the plurality of first arc segments The segments L1b and the plurality of third arc segments L1c (the plurality of second arc segments L2b and the plurality of fourth arc segments L2c) are arranged alternately and connected end to end.

10, 10', 10A, 10B, 10C: Touch display device

100: Display panel

110: First substrate

120: Second substrate

122:Outer surface

130: Display media

140:Light-shielding structure

141: First light shielding part

142: Second light shielding part

150:Pixel array layer

160: Upper polarizer

170: Lower polarizer

180: Color filter layer

200:Touch sensing structure

210: First touch electrode

212:First Touch Department

214:First Bridge Department

220: Second contact electrode

222: Second touch part

224:Second Bridge Department

230: Pseudo-electrode

232: draft department

300: Covering board

D1: first distance

D2: Second distance

d1: first direction

d2: second direction

d3: third direction

g: Gap

L1: first network cable

L1a: The first straight line segment

L1b: first arc segment

L1c: The third arc segment

L2: Second network cable

L2a: Second straight line segment

L2b: The second arc segment

L2c: fourth arc segment

L, l: length

MS: Mesh electrode

p, p1: intersection point

p0: previous intersection point

p2: next intersection point

Rspx: sub-pixel range

SPX: Sub-pixel area

SPX1: first pixel area

SPX2: Second pixel area

SPX3: The third pixel area

SPX4: The fourth pixel area

SMS: Repeating Unit

s: line width

T: distance

W, w: width

FIG. 1 is a schematic cross-sectional view of a touch display device according to an embodiment of the present invention. FIG. 2 is a schematic top view of a touch sensing structure according to an embodiment of the present invention. FIG. 3 is a schematic top view of a touch display device according to an embodiment of the present invention. FIG. 4 is a schematic top view of a touch display device according to a comparative example. FIG. 5 is a schematic top view of a touch display device according to another embodiment of the present invention. FIG. 6 is a schematic top view of a touch display device according to another embodiment of the present invention. FIG. 7 is a schematic top view of a touch display device according to another embodiment of the present invention.

10A: Touch display device

140:Light-shielding structure

141: First shading part

142: Second light shielding part

200: Touch sensing structure

D1: first distance

D2: second distance

d1: first direction

d2: second direction

d3:Third direction

L1: First network cable

L1a: The first straight line segment

L2: Second network cable

L2a: second straight line segment

L, l: length

MS: Mesh electrode

p, p1: intersection point

p0: previous intersection point

p2: next intersection point

Rspx: sub-pixel range

SPX: Sub-pixel area

SPX1: first pixel area

SPX2: Second pixel area

SPX3: The third pixel area

SPX4: The fourth pixel area

SMS: Repeating units

W, w: width

Claims (5)

A touch display device comprises: a first substrate; a second substrate disposed opposite to the first substrate; a display medium disposed between the first substrate and the second substrate; and a light shielding structure disposed between the first substrate and the second substrate, wherein the light shielding structure comprises: a plurality of first light shielding portions; and a plurality of second light shielding portions, wherein, in a top view of the touch display device, the first light shielding portions and the second light shielding portions are interlaced to define a plurality of sub-pixel regions, and a first direction is substantially perpendicular to the first direction. In the first light shielding portions, a second direction is substantially perpendicular to the first direction, each sub-pixel region has a length and a width in the first direction and the second direction respectively, and the length is greater than the width; and a touch sensing structure, wherein the second substrate has an outer surface facing away from the display medium, the touch sensing structure is disposed on the outer surface of the second substrate, and the touch sensing structure includes: a mesh electrode having a plurality of first mesh lines and a plurality of second mesh lines interlaced with each other; In the top view, the first mesh wires and the second mesh wires of the mesh electrode are interlaced with the first shading parts and the second shading parts of the shading structure, and the first mesh wires and the second mesh wires have multiple intersections, and the intersections include an intersection on the same first mesh wire, a previous intersection of the intersection, and a next intersection of the intersection, the previous intersection and the next intersection have a first distance in the first direction, and the previous intersection and the next intersection have a second distance in the second direction, and the first distance is substantially is equal to the length of the sub-pixel area, and the second distance is substantially equal to three times the width of the sub-pixel area; wherein the sub-pixel areas are arranged in a plurality of sub-pixel area rows, each sub-pixel area row includes a plurality of sub-pixel areas arranged in the second direction; a third direction intersects with the first direction and the second direction; in a top view of the touch display device, the previous intersection point, the intersection point, and the next intersection point of the first mesh wires and the second mesh wires are arranged in the third direction and are substantially located in the same sub-pixel area row. A touch display device as described in claim 1, wherein the second distance is greater than the first distance. A touch display device as described in claim 1, wherein the same sub-pixel area row includes a first pixel area, a second pixel area, a third pixel area and a fourth pixel area arranged in sequence in the second direction, and the previous intersection point, the intersection point and the next intersection point of the first mesh lines and the second mesh lines are respectively located in the first pixel area, the second pixel area and the fourth pixel area. A touch display device comprises: a first substrate; a second substrate disposed opposite to the first substrate; a display medium disposed between the first substrate and the second substrate; and a light shielding structure disposed between the first substrate and the second substrate, wherein the light shielding structure comprises: a plurality of first light shielding portions; and a plurality of second light shielding portions, wherein in a top view of the touch display device, the first light shielding portions and the second light shielding portions are interlaced to define a plurality of sub-pixel regions, and a first direction substantially A second direction is substantially perpendicular to the first direction and perpendicular to the first light shielding portions, each sub-pixel region has a length and a width in the first direction and the second direction, respectively, and the length is greater than the width; and a touch sensing structure, wherein the second substrate has an outer surface facing away from the display medium, the touch sensing structure is disposed on the outer surface of the second substrate, and the touch sensing structure includes: a mesh electrode having a plurality of first mesh lines and a plurality of second mesh lines interlaced with each other; In the top view of the device, the first mesh wires and the second mesh wires of the mesh electrode are interlaced with the first shading parts and the second shading parts of the shading structure, and the first mesh wires and the second mesh wires have a plurality of intersections, and the intersections include an intersection located on the same first mesh wire, a previous intersection of the intersection, and a next intersection of the intersection, the previous intersection and the next intersection have a first distance in the first direction, and the previous intersection and the next intersection have a second distance in the second direction, and the first distance is The second distance is substantially equal to the length of the sub-pixel area, and the second distance is substantially equal to three times the width of the sub-pixel area; wherein the sub-pixel areas are arranged in a plurality of sub-pixel area rows, each sub-pixel area row includes a plurality of sub-pixel areas arranged in the second direction; a third direction intersects with the first direction and the second direction; in a top view of the touch display device, the previous intersection point, the intersection point, and the next intersection point of the first mesh wires and the second mesh wires are arranged in the third direction and overlap the light shielding structure. A touch display device as described in claim 4, wherein the first light-shielding portions include a first light-shielding portion and a first light-shielding portion next to the first light-shielding portion arranged in the first direction, the second light-shielding portions include a second light-shielding portion located between the first light-shielding portion and the next first light-shielding portion, and the previous intersection, the intersection and the next intersection of the first network cables and the second network cables overlap the first light-shielding portion, the second light-shielding portion and the next first light-shielding portion, respectively.

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