CN117032503A

CN117032503A - Touch display device

Info

Publication number: CN117032503A
Application number: CN202310994676.6A
Authority: CN
Inventors: 林苔瑄; 简钰峰
Original assignee: AU Optronics Corp
Current assignee: AU Optronics Corp
Priority date: 2023-02-02
Filing date: 2023-08-09
Publication date: 2023-11-10

Abstract

The invention discloses a touch display device which comprises a first substrate, a second substrate, a display medium, a shading structure and a touch sensing structure. The first shading parts and the second shading parts of the shading structure are staggered to define a plurality of sub-pixel areas. The touch sensing structure comprises a net electrode, and a plurality of first net wires and a plurality of second net wires which are staggered with each other are arranged on the net electrode. The first network lines and the second network lines have a plurality of intersecting points including one intersecting point located on the same first network line, a preceding intersecting point of the one intersecting point, and a next intersecting point of the one intersecting point. In a top view of the touch display device, a previous intersection point and a 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 one sub-pixel area, and the second distance is substantially equal to three times a width of one sub-pixel area.

Description

Touch display device

Technical Field

The present invention relates to an electronic device, and more particularly, to a touch display device.

Background

In recent years, with the rapid development of various applications such as information technology, wireless mobile communication, and information home appliances, many information product input devices have been changed from conventional keyboards or mice to touch devices for the purpose of more convenience, lighter volume, and more humanization. Generally, sensing modes of a touch device can be broadly classified into resistive, capacitive, optical, acoustic, electromagnetic, etc. modes according to sensing principles. Taking a capacitive touch device as an example, the capacitive touch device can be classified into self capacitive (self capacitive) touch and mutual capacitive (mutual capacitive) touch according to its motion and sensing modes.

The mutual capacitance type touch device comprises a plurality of first touch electrodes extending along a first direction and a plurality of second touch electrodes extending along a second direction, wherein the first direction is different from the second direction. When an object (such as a touch pen) touches the touch device, the capacitance between the first touch electrode and the second touch electrode is changed; the change signal is returned to the controller to calculate the coordinates of the contact point.

The touch structure comprising the first touch electrode and the second touch electrode can be integrated with the display panel to form a touch display device. Generally, in order to reduce the influence of the touch structure on the overall aperture ratio, the first touch electrode and the second touch electrode are designed to be net-shaped. However, the mesh wires of the first and second mesh-shaped touch electrodes are not transparent, so that the aperture ratio is lost to some extent. Therefore, how to configure the net wires of the first touch electrode and the second touch electrode to further reduce the influence of the touch structure on the aperture ratio is one of the problems of the developer.

Disclosure of Invention

The invention provides a touch display device with high aperture opening ratio.

The touch display device comprises a first substrate, a second substrate, a display medium, a shading structure and a touch sensing structure. The second substrate is arranged opposite to the first substrate. The display medium is arranged between the first substrate and the second substrate. The shading structure is positioned between the first substrate and the second substrate. The light shielding structure comprises a plurality of first light shielding parts and a plurality of second light shielding parts. In a top view of the touch display device, the plurality of first light shielding portions and the plurality of second light shielding portions are staggered to define a plurality of sub-pixel regions. The first direction is substantially perpendicular to the plurality of first light shielding portions. The 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. The second substrate is provided with an outer surface facing away from the display medium, and the touch sensing structure is arranged on the outer surface of the second substrate. The touch sensing structure comprises a net electrode, and a plurality of first net wires and a plurality of second net wires which are staggered with each other are arranged on the net electrode. In a top view of the touch display device, the first and second mesh wires of the mesh electrode are staggered with the first and second light shielding portions of the light shielding structure. The first network lines and the second network lines have a plurality of intersecting points including one intersecting point located on the same first network line, a preceding intersecting point of the one intersecting point, and a next intersecting point of the one intersecting point. In a top view of the touch display device, a previous intersection point and a 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 one sub-pixel area, and the second distance is substantially equal to three times a width of one sub-pixel area.

Drawings

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

FIG. 2 is a schematic top view of a touch sensing structure according to an embodiment of the invention;

FIG. 3 is a schematic top view of a touch display device according to an embodiment of the 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 invention;

FIG. 6 is a schematic top view of a touch display device according to another embodiment of the invention;

fig. 7 is a schematic top view of a touch display device according to another embodiment of the invention.

Symbol description

10. 10', 10A, 10B, 10C touch display device

100 display panel

110 first substrate

120 a second substrate

122 outer surface

130 display medium

140 shading structure

141 first light shielding part

142 a 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 control part

214 first bridge portion

220 second touch electrode

222 second touch control part

224 second bridge portion

230 pseudo-electrode

232, fitting part

300 cover plate

D1 first distance

D2 second distance

d1 first direction

d2 second direction

d3 third direction

g, gap

L1, first net wire

L1a is a first straight line segment

L1b first arc line segment

L1c third arc line section

L2:second net twine

L2a second straight line segment

L2b second arc line section

L2c fourth arc line section

L, l length of

MS mesh electrode

p, p1 intersection point

p0.previous intersection point

p2. the next intersection point

Rspx, sub-pixel area column

SPX sub-pixel region

SPX1 first pixel region

SPX2 second pixel region

SPX3 third pixel region

SPX4 fourth Pixel region

SMS: repeat Unit

s line width

T distance

W, w width

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 connections. 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 display device according to an embodiment of the 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 this 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 be a self-luminous display medium (e.g., micro light emitting diode device, organic electroluminescent material, etc.).

The display panel 100 further includes a light shielding structure 140 disposed between the first substrate 110 and the second substrate 120. The light shielding structure 140 is commonly called a Black Matrix (Black Matrix). In this embodiment, the material of the light shielding structure 140 is, for example, black resin. However, the invention is not limited thereto, and in other embodiments, the material of the light shielding structure 140 may be a blackout metal or other materials with low reflectivity.

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

In this embodiment, the display panel 100 may further include an upper polarizer 160 and a lower polarizer 170 disposed on the upper and lower sides of the display medium 130, respectively; the upper polarizer 160 and the lower polarizer 170 are used 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 be omitted.

In this embodiment, the display panel 100 may further 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 a color image. However, the present invention is not limited thereto, and in other embodiments, if the display medium 130 has the capability of emitting multiple colors, or the display panel 100 does not need to display a color picture, 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 122 of the second substrate 120. For example, in the present embodiment, the touch sensing structure 200 may be directly formed on the outer surface 122 of the second substrate 120 of the display panel 100 to form an on-cell (on-cell) touch display device 10. In the present embodiment, the mesh electrode MS (refer to fig. 3) of the touch sensing structure 200 has a distance T from the outer surface 122 of the second substrate 120, and the distance T is smaller than 10 μm.

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

Fig. 2 is a schematic top view of a touch sensing structure according to an embodiment of the invention. Referring to fig. 1 and 2, the touch sensing structure 200 is disposed on the outer surface 122 of the second substrate 120. Referring to fig. 2, in the embodiment, the touch sensing structure 200 includes a first touch electrode 210, a second touch electrode 220 and a dummy electrode 230, the first touch electrode 210 includes a plurality of first touch portions 212 having a mesh shape and a first bridging portion 214 electrically connected to the plurality of first touch portions 212, the second touch electrode 220 includes a plurality of second touch portions 222 having a mesh shape and a second bridging portion 224 electrically connected to the plurality of second touch portions 222, the first bridging portion 214 of the first touch electrode 210 and the second bridging portion 224 of the second touch electrode 220 are crossed and electrically isolated from each other, a gap g exists between the first touch electrode 210 and the second touch electrode 220, the dummy electrode 230 is disposed in the gap g between the first touch electrode 210 and the second touch electrode 220 and is spaced apart from the first touch electrode 210 and the second touch electrode 220, and the dummy portion 232 of the dummy electrode 230 may have a mesh shape. One of the first touch electrode 210 and the second touch electrode 220 is a transmission 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 schematic top view of a touch display device according to an embodiment of the invention. Fig. 3 shows the mesh electrode MS of the light shielding structure 140 and the touch sensing structure 200, and other components are omitted.

Referring to fig. 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 staggered with each other. Referring to fig. 2 and 3, the mesh electrode MS may refer to the first touch portion 212 of the first touch electrode 210, the second touch portion 222 of the second touch electrode 220, and/or the dummy portion 232 of the dummy electrode 230. In the present embodiment, the line width s of the first net line L1/the second net line L2 may fall within a range of 3 μm to 10 μm. It should be noted that fig. 2 schematically illustrates the first touch electrode 210, the second touch electrode 220, and the dummy electrode 230 to illustrate the relative relationship of 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 dummy portion 232 of the dummy electrode 230 of fig. 2 are schematically depicted as a mesh, and the actual pattern 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 dummy portion 232 of the dummy electrode 230 is based on the mesh electrode MS depicted in fig. 3.

Referring to fig. 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 a top view of the touch display device 10, the first light shielding portions 141 and the second light shielding portions 142 are staggered 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 a top view of the touch display device 10, the first and second net lines L1 and L2 of the mesh electrode MS are intersected with the first and second light shielding portions 141 and 142 of the light shielding structure 140, the first and second net lines L1 and L2 have a plurality of intersecting points p, the intersecting points p include one intersecting point p1 located on the same first net line L1, a previous intersecting point p0 of the one intersecting point p1, and a next intersecting point p2 of the one intersecting point p1, the previous intersecting point p0 and the next intersecting point p2 have a first distance D1 in a first direction D1, the first distance D1 is substantially equal to a length L of the sub-pixel region SPX, the previous intersecting point p0 and the next intersecting point p2 have a second distance D2 in a second direction D2, and the second distance D2 is substantially equal to three times a width W of the sub-pixel region 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 p, and the mesh electrode MS may be formed by splicing a plurality of repeating units SMS. Each of the repeating units SMS has a length l in the second direction d2, each of the repeating units SMS has a width w in the first direction d1, and the length l is greater than the width w. It is noted that the setting direction of the length L of the repeating unit SMS of the mesh electrode MS (i.e. the second direction D2) is substantially perpendicular to the setting direction of the length L of the sub-pixel region SPX (i.e. the first direction D1), such that the first distance D1 between the previous intersection p0 and the next intersection p2 of the mesh electrode MS in the first direction D1 is substantially equal to the length L of the sub-pixel region SPX, and the second distance D2 between the previous intersection p0 and the next intersection p2 in the second direction D2 is substantially equal to three times the width W of the sub-pixel region SPX. Therefore, the area occupied by the first and second light-shielding net lines L1 and L2 in the sub-pixel region SPX can be reduced, so as to improve the overall aperture ratio of the touch display device 10.

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

The touch display device 10' of the comparative example of fig. 4 is similar to the touch display device 10 of the embodiment of fig. 3, and the difference between them is that: the arrangement direction of the mesh electrode MS of the touch display device 10' of fig. 4 is different from the arrangement direction of the mesh electrode MS of the touch display device 10 of fig. 3. In detail, in the comparative example of fig. 4, the arrangement direction of the length L of the repeating unit SMS of the mesh electrode MS (i.e., the first direction d 1) is substantially parallel to the arrangement direction of the length L of the sub-pixel region SPX (i.e., the first direction d 1). The overall aperture ratio of the touch display device 10' of the comparative example of fig. 4 is 60.99%. The overall aperture ratio of the touch display device 10 of the embodiment of fig. 3 is 61.23%. Compared with the comparative example of fig. 4, the embodiment of fig. 3 can increase the aperture ratio by 0.24% by the design that the arrangement direction of the length L of the repeating unit SMS of the mesh electrode MS is substantially perpendicular to the arrangement direction of the length L of the sub-pixel region SPX.

Referring to fig. 3, in the present embodiment, a plurality of sub-pixel regions SPX are arranged in a plurality of sub-pixel region columns Rspx, each sub-pixel region column Rspx includes a plurality of sub-pixel regions SPX arranged in the second direction d 2; the third direction d3 is staggered with the first direction d1 and the second direction d 2; in a top view of the touch display device 10, a previous intersection p0, an intersection p1, and a next intersection p2 of the first and second net lines L1 and L2 are arranged in the third direction d3 and are substantially located in the same sub-pixel region row Rspx.

Referring to fig. 3, in the present 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 sequentially arranged in the second direction d2, and a previous intersection p0, an intersection p1, and a next intersection p2 of the first net lines L1 and the second net lines L2 are respectively located in the first pixel region SPX1, the second pixel region SPX2, and the fourth pixel region SPX 4. In the present embodiment, the previous intersection point p0, the intersection point p1 and the next intersection point p2 of the first plurality of wires L1 and the second plurality of wires L2 do not overlap with the light shielding structure 140. However, the present invention is not limited thereto, and in other embodiments, the previous intersection point p0, the intersection point p1 and the next intersection point p2 of the first net lines L1 and the second net lines L2 may also overlap with the light shielding structure 140, which will be illustrated with reference to other drawings.

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

The touch display device 10A of fig. 5 is similar to the touch display device 10 of fig. 3, and the difference between them is that: the relative positions of the light shielding structure 140 and the mesh electrode MS are slightly different. Referring to fig. 4, in the present embodiment, a plurality of sub-pixel regions SPX are arranged in a plurality of sub-pixel region columns Rspx, each sub-pixel region column Rspx includes a plurality of sub-pixel regions SPX arranged in the second direction d 2; the third direction d3 is staggered with the first direction d1 and the second direction d 2; in a top view of the touch display device 10, a previous intersection p0, an intersection p1, and a next intersection p2 of the first and second net lines L1 and L2 are aligned in the third direction d3 and all overlap the light shielding structure 140.

In the present embodiment, the plurality of first light shielding portions 141 of the light shielding structure 140 include one first light shielding portion 141 aligned in the first direction d1 and a next first light shielding portion 141 of the one first light shielding portion 141, the plurality of second light shielding portions 142 include one second light shielding portion 142 located between the one first light shielding portion 141 and the next first light shielding portion 141, and a previous intersection point p0, an intersection point p1, and a next intersection point p2 of the plurality of first net lines L1 and the plurality of second net lines L2 overlap the first light shielding portion 141, the second light shielding portion 142, and the next first light shielding portion 141, respectively.

In detail, in the present embodiment, the same sub-pixel region row Rspx includes the first pixel region SPX1, the second pixel region SPX2, the third pixel region SPX3, and the fourth pixel region SPX4 sequentially arranged in the second direction d2, the former intersection p0 overlaps at an intersection of one first light shielding portion 141 and one second light shielding portion 142 defining the upper right corner of the first pixel region SPX1, the intersection p1 overlaps at another second light shielding portion 142 separating the second pixel region SPX2 and the third pixel region SPX3, and the next intersection p2 overlaps at an intersection of another first light shielding portion 141 and one further second light shielding portion 142 defining the lower right corner of the fourth pixel region SPX 4.

In the present embodiment, since the intersections p of the first mesh lines L1 and the second mesh lines L2 of the mesh electrode MS overlap the light shielding structure 140, the overall aperture 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 invention. Fig. 6 shows the mesh electrode MS of the light shielding structure 140 and the touch sensing structure 200, and 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 them is that: the first and second wires L1 and L2 of the touch display device 10B of fig. 6 are different from the first and second wires L1 and L2 of the touch display device 10 of fig. 3.

Specifically, in the embodiment of fig. 3, the first wire L1 (the second wire L2) includes a plurality of first straight line segments L1a (a plurality of second straight line segments L2 a) connected end to end, wherein the extending directions of the adjacent plurality of first straight line segments L1a (the plurality of second straight line segments L2 a) are different, and the plurality of first straight line segments L1a (the plurality of second straight line segments L2 a) are connected to form a first wire L1 (the second wire L2) in a zigzag shape; in the embodiment of fig. 6, the first net wire L1 (the second net wire L2) includes a plurality of first straight line segments L1a and a plurality of first arc line segments L1b (a plurality of second straight line segments L2a and a plurality of second arc line segments L2 b) that are alternately arranged and connected end to end.

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

The touch display device 10C of fig. 7 is similar to the touch display device 10 of fig. 3, and the difference between them is that: the first and second wires L1 and L2 of the touch display device 10C of fig. 7 are different from the first and second wires L1 and L2 of the touch display device 10 of fig. 3.

Specifically, in the embodiment of fig. 7, the first wire L1 (the second wire 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 L2 c), and the plurality of first arc segments L1b and the plurality of third arc segments L1c (the plurality of second arc segments L2b and the plurality of fourth arc segments L2 c) are alternately arranged and connected end to end.

Claims

1. A touch display device, comprising:

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

the shading structure is positioned between the first substrate and the second substrate, wherein the shading structure comprises:

a plurality of first light shielding portions; and

the first light shielding parts and the second light shielding parts are staggered in a top view of the touch display device to define a plurality of sub-pixel areas, a first direction is substantially perpendicular to the first light shielding parts, a second direction is substantially perpendicular to the first direction, and each sub-pixel area has a length and a width in the first direction and the second direction respectively, and the length is larger than the width; and

the touch sensing structure is arranged on the outer surface of the second substrate, and comprises:

the mesh electrode is provided with a plurality of first mesh wires and a plurality of second mesh wires which are staggered with each other;

in a top view of the touch display device, the first and second wires of the mesh electrode are staggered with the first and second light shielding portions of the light shielding structure, the first and second wires have a plurality of intersecting points, the intersecting points include an intersecting point located on the first wire, a previous intersecting point of the intersecting point, and a next intersecting point of the intersecting point, the previous intersecting point and the next intersecting point have a first distance in the first direction, the previous intersecting point and the next intersecting point have a second distance in the second direction, the first distance is substantially equal to the length of the sub-pixel region, and the second distance is substantially equal to three times the width of the sub-pixel region.

2. The touch display device of claim 1, wherein the second distance is greater than the first distance.

3. The touch display device of claim 1, wherein the sub-pixel regions are arranged in a plurality of sub-pixel region rows, each sub-pixel region row comprising a plurality of sub-pixel regions arranged in the second direction; the third direction is staggered 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 network lines and the second network lines are arranged in the third direction and are substantially located in the same sub-pixel area row.

4. The touch display device as claimed in claim 3, wherein the same sub-pixel region row comprises a first pixel region, a second pixel region, a third pixel region and a fourth pixel region sequentially arranged in the second direction, wherein the previous intersection point, the intersection point and the next intersection point of the first net wires and the second net wires are respectively located in the first pixel region, the second pixel region and the fourth pixel region.

5. The touch display device of claim 1, wherein the sub-pixel regions are arranged in a plurality of sub-pixel region rows, each sub-pixel region row comprising a plurality of sub-pixel regions arranged in the second direction; the third direction is staggered 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 network lines and the second network lines are arranged in the third direction and all overlap the light shielding structure.

6. The touch display device according to claim 5, wherein the first light shielding portions include a first light shielding portion arranged in the first direction and a next first light shielding portion of the first light shielding portion, 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, the previous intersection point, the intersection point and the next intersection point of the first net wires and the second net wires overlap the first light shielding portion, the second light shielding portion and the next first light shielding portion, respectively.