TWI783743B - Touch device - Google Patents

Abstract

A touch device includes a conductive mesh, an insulating layer, and second bridge portions. The conductive mesh includes first main portions, first bridge portions, and second main portions. The first bridge portions are connected with the first main portion to constitute first electrodes. The insulating layer is located on the conductive mesh and has openings. The second bridge portions are located on the insulating layer and overlapping with the first bridge portions. The second bridge portions are connected with the second main portions through the openings of the insulating layer to constitute second electrodes. The first electrodes and the second electrodes are interlaced to define touch units. Each touch unit is defined by a corresponding one of the first electrodes and a corresponding one of the second electrodes. Each touch unit includes two or more of the first bridge portions and two or more of the second bridge portions.

Description

touch device

The present invention relates to a touch device, and in particular to a touch device including a conductive mesh.

With the development of science and technology, the appearance rate of touch devices in the market is gradually increasing, and various related technologies are emerging in an endless stream. In some electronic devices, such as mobile phones, tablet computers, smart watches, etc., touch devices are often combined with display panels to improve the convenience of using the electronic devices.

In some touch devices, electrodes arranged alternately form a plurality of touch units, and when a user's finger approaches these touch units, the capacitance in the touch units will change. Therefore, the position of the user's finger can be determined by calculating the change of the capacitance of the touch unit. In order to perform finer operations on the touch device, many people try to manipulate the touch device with a stylus. However, since the tip of the stylus is smaller than the fingertips of human beings, when the stylus touches the touch device, it can only change the capacitance of the touch units in a small range. Therefore, it is difficult to accurately identify the exact position of the stylus.

The invention provides a touch device, which can reduce and improve the accuracy of judging touch signals.

At least one embodiment of the present invention provides a touch device. The touch device includes a conductive mesh, an insulating layer and a plurality of second bridging parts. The conductive mesh includes a plurality of first main parts, a plurality of first bridging parts and a plurality of second main parts. The first bridge part is connected to the first body part to form a plurality of first electrodes. The second body part is separated from the first body part and the first bridging part. The insulation layer is on the conductive net and has a plurality of openings. The second bridging portion is located on the insulating layer and overlapped with the first bridging portion. The second bridging part is connected to the second body part through the opening of the insulating layer to form a plurality of second electrodes. The first electrodes and the second electrodes intersect to define a plurality of touch units. Each touch unit is defined by a corresponding one of the first electrodes and a corresponding one of the second electrodes. Each touch unit includes more than two of the first bridge parts and more than two of the second bridge parts.

FIG. 1 is a schematic top view of a touch device according to an embodiment of the present invention.

1, the touch device 10 includes a substrate 100, a plurality of first electrodes 110, a plurality of second electrodes 120, a plurality of first wires 130, a plurality of second wires 140, a plurality of first pads 150, a plurality of a second pad 160 and a driving circuit 170 .

The substrate 100 includes a transparent substrate, and its material is, for example, glass, quartz, organic polymer or other applicable materials. The substrate 100 is, for example, a rigid substrate or a flexible substrate.

The plurality of first electrodes 110 and the plurality of second electrodes 120 are located on the substrate 100 . The first electrodes 110 and the second electrodes 120 intersect to define a plurality of touch units TU. In this embodiment, the first electrodes 110 extend along the first direction E1, and the second electrodes 120 extend along the second direction E2, wherein the first direction E1 is intersected with the second direction E2. For example, the first direction E1 is perpendicular to the second direction E2. Each touch unit TU is defined by a corresponding one of the first electrodes 110 and a corresponding one of the second electrodes 120 .

In some embodiments, the overlapping portion of the first electrode 110 and the second electrode 120 is separated by an insulating layer (not shown in FIG. 1 ), thereby avoiding direct contact between the first electrode 110 and the second electrode 120 .

In this embodiment, the touch units TU are arranged in an array along the first direction E1 and the second direction E2. The touch units TU arranged in the first direction E1 share the same first electrode 110 , and the touch units TU arranged in the second direction E2 share the same second electrode 120 . In other words, the touch units TU arranged in the first direction E1 are electrically connected to each other through the first electrode 110 , and the touch units TU arranged in the second direction E2 are electrically connected to each other through the second electrode 120 .

A plurality of first pads 150 and a plurality of second pads 160 are located on the substrate 100 . The first pad 150 is electrically connected to the first electrode 110 through the first wire 130 , and the second pad 160 is electrically connected to the second electrode 120 through the second wire 140 . In this embodiment, each touch unit TU is electrically connected to a corresponding first pad 150 through a corresponding first electrode 110 and a corresponding first wire 130 , and each touch unit TU is electrically connected to a corresponding first pad 150 through a corresponding first electrode 110 and a corresponding first wire 130 . A corresponding second electrode 120 and a corresponding second wire 140 are electrically connected to a corresponding second pad 160 .

The driving circuit 170 is electrically connected to the first pad 150 and the second pad 160 . In some embodiments, the driving circuit 170 is bonded to the first pad 150 and the second pad 160 . For example, the driving circuit 170 is bonded to the first pad 150 and the second pad 160 through solder, conductive glue or other conductive connection structures.

In some embodiments, the driving circuit 170 includes a chip package structure, and the driving circuit 170 is suitable for performing operations on touch signals. In this embodiment, each touch unit TU is electrically connected to the driving circuit 170 through a corresponding first pad 150 and a corresponding second pad 160 .

In some embodiments, the touch device 10 is suitable for a stylus P, and the tip width W1 of the stylus P is 1 mm to 5 mm. In some embodiments, the stylus P is an active stylus. In other embodiments, the touch device 10 is also suitable for finger touch.

FIG. 2 is a schematic cross-sectional view of a touch display device according to an embodiment of the present invention. It must be noted here that the embodiment in FIG. 2 follows the component numbers and part of the content of the embodiment in FIG. 1 , wherein the same or similar numbers are used to denote the same or similar components, and the description of the same technical content is omitted. For the description of the omitted part, reference may be made to the foregoing embodiments, and details are not repeated here.

Please refer to FIG. 2 , in this embodiment, the touch display device 1 includes a touch device 10 , a display panel 20 , a backlight module 30 and a frame 40 .

The display panel 20 includes a first substrate 200 , an active device array 210 , a liquid crystal layer 220 , a filter element 230 , a second substrate 240 , a shielding structure 250 , a first polarizer 260 and a second polarizer 270 .

The first substrate 200 and the second substrate 240 include transparent substrates, and their materials are, for example, glass, quartz, organic polymer or other applicable materials. The first substrate 200 and the second substrate 240 are, for example, rigid substrates or flexible substrates.

The active device array 210 , the liquid crystal layer 220 and the filter element 230 are located between the first substrate 200 and the second substrate 240 .

The first polarizer 260 and the second polarizer 270 are located outside the first substrate 200 and the second substrate 240 respectively. In this embodiment, the first polarizer 260 is located on the first substrate 200 , the shielding structure 250 is located on the second substrate 240 , and the second polarizer 270 is located on the shielding structure 250 .

The shielding structure 250 includes a transparent conductive material, such as indium tin oxide. The shielding structure 250 is suitable for preventing the electric field generated by the touch device 10 from affecting the image displayed on the display panel 20 .

In this embodiment, the display panel 20 is a liquid crystal display panel, and the display panel 20 overlaps the backlight module 30 , but the invention is not limited thereto. In other embodiments, the display panel 20 is a micro light emitting diode display panel, an organic light emitting diode display panel or other display panels that do not require an additional light source. When the display panel 20 can emit light by itself, the backlight module 30 can be omitted.

The display panel 20 and the backlight module 30 are disposed in the frame 40 . The touch device 10 is disposed on the display panel 20 . In this embodiment, the touch device 10 is attached to the display panel 20 by an adhesive material oc, such as optically clear adhesive (OCA), water glue (SVR) or other suitable materials. , but the present invention is not limited thereto. In other embodiments, the touch device 10 is directly formed on the second substrate 240 , and the substrate of the touch device 10 (the substrate 100 in FIG. 1 ) is the second substrate 240 of the display panel 20 . In this case, the shielding structure 250 may be omitted.

3A and 3B are schematic top views of a touch unit TU of a touch device according to an embodiment of the present invention, wherein FIG. 3A shows a conductive mesh and omits other components, and FIG. 3B shows an insulating layer and a touch control unit TU. the second bridging portion, and omit other components. FIG. 3C is a schematic cross-sectional view of the line a-a' in FIG. 3A and FIG. 3B . FIG. 3D is a schematic top view of the first main body portion 112 and the first bridging portion 114 in the conductive mesh MS. FIG. 3E is a schematic top view of the second main body 122 in the conductive mesh MS. FIG. 3F is a schematic top view of the dummy electrodes DE in the conductive mesh MS.

It should be noted that, in FIGS. 3A and 3D to 3F, the first body portion 112, the first bridge portion 114, the second body portion 122, and the dummy electrodes DE of the conductive mesh MS include different line widths, but this is only for illustration. It is convenient to identify different parts of the conductive mesh MS. Actually, the first body part 112 , the first bridge part 114 , the second body part 122 and the dummy electrode DE of the conductive mesh MS may include the same line width.

3A to 3C are used to illustrate the touch unit of the touch device shown in FIG. 1 . For other components of the touch device, please refer to FIG. 1 , which will not be repeated here.

Please refer to FIG. 3A to FIG. 3F , the touch device includes a conductive mesh MS, an insulating layer IL and a plurality of second bridge portions 124 .

Please refer to FIG. 3A , the line width of the conductive mesh MS is 2 microns to 20 microns, and the mesh width W2 of the conductive mesh is 100 microns to 1000 microns. In some embodiments, the material of the conductive mesh MS includes metal, metal oxide, metal nitride or other suitable materials. The method of forming the conductive mesh MS includes, for example, a photolithographic etching process.

The conductive mesh MS includes a plurality of first main parts 112 , a plurality of first bridging parts 114 and a plurality of second main parts 122 . The second body portion 122 is separated from the first body portion 112 and the first bridging portion 114 . For example, the gap between the second body portion 122 and the adjacent first body portion 112 and the gap between the second body portion 122 and the adjacent first bridging portion 114 are less than or equal to 20 micrometers.

In this embodiment, the plurality of first body parts 112 are electrically connected to each other by a plurality of first bridge parts 114, and the first bridge parts 114 are connected to the first body parts 112 to form a structure extending along the first direction E1. the first electrode 110 . In other words, in a single touch unit TU, the first electrode 110 extending along the first direction E1 includes a plurality of first body portions 112 and a plurality of first bridge portions 114 . In this embodiment, the wider portion of the first electrode 110 is defined as the first body portion 112 , and the narrower portion overlapping the second bridge portion 124 (drawn in FIG. 3B ) is defined as the first bridge portion 114 , wherein the first bridging portion 114 is located in the area circled by the dotted line in FIG. 3A . In this embodiment, a single first bridging portion 114 only includes a single wire in the conductive mesh MS, but the invention is not limited thereto. In other embodiments, a single first bridging portion 114 includes more than two wires in the conductive mesh MS.

In this embodiment, the first electrodes 110 in the touch units TU adjacent in the first direction E1 are directly connected to each other, and the first electrodes 110 in the touch units TU adjacent in the second direction E2 are separated from each other. For example, in FIG. 3A , the uppermost first body part 112 is connected to other touch units TU not shown above, and the lowermost first body part 112 is connected to other touch units TU not shown below. The touch unit TU is connected.

In this embodiment, the conductive mesh MS also includes dummy electrodes DE. The dummy electrode DE is separated from the first body part 112 , the first bridge part 114 and the second body part 122 . The dummy electrodes DE are floating electrodes. In some embodiments, the dummy electrode DE is surrounded by the first body portion 112 and/or the second body portion 122 .

An insulating layer IL is located on the conductive mesh MS. In this embodiment, the insulating layer IL is located on the first body portion 112 , the first bridge portion 114 , the second body portion 122 and the dummy electrode DE. The insulating layer IL has a plurality of openings O. The opening O overlaps the second body portion 122 , and the opening O does not overlap the first body portion 112 and the first bridging portion 114 . In other words, in this embodiment, the insulating layer IL covers the first electrode 110 and exposes the second body portion 122 . In some embodiments, the material of the insulating layer IL includes silicon oxide, silicon nitride, silicon oxynitride, aluminum oxide, zirconium oxide, hafnium oxide, organic materials, or other suitable materials. In some embodiments, the thickness of the insulating layer IL is 0.3 μm to 5 μm.

The second bridge portion 124 is located on the insulating layer IL and overlaps the first bridge portion 114 . The second bridging portion 124 is connected to the second body portion 122 through the opening O of the insulating layer to form the second electrode 120 extending along the second direction E2. In other words, in a single touch unit TU, the second electrode 120 extending along the second direction E2 includes a plurality of second body portions 122 and a plurality of second bridge portions 124 . In this embodiment, the pattern vertically projected on the substrate 100 by the second bridging portion 124 overlaps the pattern vertically projected on the substrate 100 by the conductive mesh MS, thereby improving the quality of the display image. In other words, the shape of the second bridge portion 124 vertically projected on the substrate 100 and the shape of the conductive mesh MS vertically projected on the substrate 100 can be regarded as a network structure, so as to prevent the display screen from being in the position of the second bridge portion 124 Traces of uneven brightness (MURA) appear. In some embodiments, the line width of the second bridge portion 124 is equal to or slightly larger than the line width of the conductive mesh MS. In some embodiments, the material of the second bridging portion 124 includes metal, metal oxide (such as indium tin oxide), metal nitride or other suitable materials. The method of forming the second bridging portion 124 includes, for example, a photolithographic etching process.

In this embodiment, each second bridging portion 124 straddles a corresponding first bridging portion 114 and electrically connects the second body portion 122 on both sides of a corresponding first bridging portion 114 .

In this embodiment, the second electrodes 120 in the touch units TU adjacent in the second direction E2 are directly connected to each other, while the second electrodes 120 in the touch units TU adjacent in the first direction E1 are separated from each other. For example, in FIG. 3A , the leftmost second body part 122 is connected to other touch units TU not shown on the left, and the second body part 122 on the rightmost side is connected to the right not shown touch unit TU. Other touch units are connected to TU.

In the touch unit TU, the first bridge portion 114 and the second bridge portion 124 overlap in the third direction E3 perpendicular to the substrate 100 . In other words, in the touch unit TU of this embodiment, the first electrodes 110 and the second electrodes 120 have multiple overlapping positions in the third direction E3.

In a single touch unit TU, the more the number of the first bridge portion 114 and the second bridge portion 124 is, the higher the amount of capacitance variation generated during touch is. Therefore, when manipulating the touch device, even if the touch area (such as the tip area of the stylus pen) is small, the touch position can still be accurately identified.

In this embodiment, each touch unit TU includes more than two of the first bridging portions 114 and more than two of the second bridging portions 124 . Therefore, compared with the touch unit with only one first bridge portion and one second bridge portion, the touch unit TU of this embodiment can more accurately identify the amount of change in capacitance caused by touch.

In some embodiments, each touch unit TU includes six, nine, twelve or sixteen first bridges 114 and six, nine, twelve or sixteen second bridges 124 . In this embodiment, each touch unit TU includes six first bridge portions 114 and six second bridge portions 124 .

In addition, in this embodiment, the length L of a single touch unit TU is 3 mm to 10 mm, and the width W is 3 mm to 10 mm.

Table 1 is the first electrode 110 and the second electrode 120 and the corresponding shielding structure (shown in FIG. 2 ) in a touch unit of the touch device (shown in FIG. 3A and FIG. 3B ) before being touched. Simulation data for capacitance values. Table 1 first electrode second electrode shelter structure first electrode 2.578 pF -1.622 pF -0.956 pF second electrode -1.586 pF 2.479 pF -0.892 pF

It can be seen from Table 1 that, based on the first electrode, the capacitance value between the first electrode and other conductors (including the second electrode and the shielding structure) is 2.578 pF, and the capacitance between the first electrode and the second electrode The capacitance between them is -1.622 pF. Based on the second electrode, the capacitance between the second electrode and other objects (including the first electrode and the shielding structure) is 2.479 pF, and the capacitance between the second electrode and the first electrode is -1.586 pF . It can be known from Table 1 that the capacitance between the first electrode and the second electrode is in the range of -1.586 pF to -1.622 pF, and the average value is -1.604 pF. In addition, the capacitance value between the shielding structure and the first electrode is -0.956 pF, and the capacitance value between the shielding structure and the second electrode is -0.892 pF.

Table 2 shows the first electrode 110 and the second electrode 120 and the corresponding shielding structure (shown in FIG. 2 ) in a touch unit of the touch device (shown in FIG. 3A and FIG. 3B ) when being touched. and simulated data for the capacitance value of a finger (or stylus). Table 2 first electrode second electrode finger (or stylus) shelter structure first electrode 2.805 pF -1.301 pF -0.652 pF -0.852 pF second electrode -1.311 pF 2.742 pF -0.618 pF -0.814 pF

It can be seen from Table 2 that based on the first electrode, the capacitance value between the first electrode and other objects (including the second electrode, finger and shielding structure) is 2.805 pF, and the capacitance between the first electrode and the second electrode The capacitance between them is -1.301 pF. Based on the second electrode, the capacitance value between the second electrode and other objects (including the first electrode, finger and shielding structure) is 2.742 pF, and the capacitance value between the second electrode and the first electrode is - 1.311 pF. It can be known from Table 2 that the capacitance between the first electrode and the second electrode is in the range of -1.311 pF to -1.301 pF, and the average value is -1.306 pF. In addition, the capacitance value between the shielding structure and the first electrode is -0.852 pF, and the capacitance value between the shielding structure and the second electrode is -0.814 pF; the capacitance between the finger (or stylus) and the first electrode The value is -0.652 pF, and the capacitance between the finger (or stylus) and the second electrode is -0.618 pF.

Combining the data in Table 1 and Table 2, it can be known that the capacitance between the first electrode and the second electrode is about -1.604 pF before being touched, and about -1.306 pF after being touched. Based on the foregoing, there is sufficient capacitive sensing between the first electrode and the second electrode in this embodiment, and the capacitive variation caused by touch is about 0.3 pF.

It should be noted that Table 1 and Table 2 are only the simulation results of the capacitance value of the touch unit in one embodiment of the present invention, and are not used to limit the actual size of the capacitance value of the touch unit in the embodiment of the present invention. The actual size of the capacitance of the touch unit in the embodiment of the present invention can be adjusted according to requirements.

4A and 4B are schematic top views of a touch unit of a touch device according to an embodiment of the present invention. FIG. 4C is a schematic top view of the first main body portion 112 and the first bridging portion 114 in the conductive mesh MS. FIG. 4D is a schematic top view of the second main body 122 in the conductive mesh MS. FIG. 4E is a schematic top view of the dummy electrodes DE in the conductive mesh MS.

It should be noted that, in FIGS. 4A and 4C to 4E, the first body portion 112, the first bridge portion 114, the second body portion 122, and the dummy electrodes DE of the conductive mesh MS include different line widths, but this is only for illustration. It is convenient to identify different parts of the conductive mesh MS. Actually, the first body part 112 , the first bridge part 114 , the second body part 122 and the dummy electrode DE of the conductive mesh MS may include the same line width.

It must be noted here that the embodiment in Figures 4A to 4E follows the element numbers and parts of the embodiment in Figures 3A to 3F, where the same or similar numbers are used to indicate the same or similar elements, and the same or similar elements are omitted. A description of the technical content. For the description of the omitted part, reference may be made to the foregoing embodiments, and details are not repeated here.

The difference between the touch unit TUa in FIG. 4A to FIG. 4E and the touch unit TU in FIG. 3A to FIG. 3F is that: in the embodiment of FIG. 4A to FIG. Nine second bridging portions 124 .

In this embodiment, a single first bridging portion 114 includes more than two wires in the conductive mesh MS. Each second bridge portion 124 straddles the first bridge portion 114 . In this embodiment, the second bridge portion 124 overlaps a part of the dummy electrode DE, and connects the second body portion 122 on both sides of the first bridge portion 114 . In some embodiments, the bottom of the second bridge portion 124 may be one of the first bridge portion 114 and the dummy electrode DE.

Based on the above, in this embodiment, each touch unit TUa includes more than two of the first bridge portions 114 and more than two of the second bridge portions 124 . Therefore, compared with the touch unit with only one first bridge portion and one second bridge portion, the touch unit TUa of this embodiment can more accurately identify the capacitance variation caused by touch.

5A and 5B are schematic top views of a touch unit of a touch device according to an embodiment of the present invention. FIG. 5C is a schematic top view of the first main body portion 112 and the first bridge portion 114 in the conductive mesh MS. FIG. 5D is a schematic top view of the second main body 122 in the conductive mesh MS. FIG. 5E is a schematic top view of the dummy electrodes DE in the conductive mesh MS.

It should be noted that, in FIGS. 5A and 5C to 5E, the first body portion 112, the first bridge portion 114, the second body portion 122, and the dummy electrodes DE of the conductive mesh MS include different line widths, but this is only for illustration. It is convenient to identify different parts of the conductive mesh MS. Actually, the first body part 112 , the first bridge part 114 , the second body part 122 and the dummy electrode DE of the conductive mesh MS may include the same line width.

It must be noted here that the embodiment of Fig. 5A to Fig. 5E follows the component numbers and part of the content of the embodiment of Fig. 4A to Fig. 4E, wherein the same or similar symbols are used to represent the same or similar components, and the same or similar components are omitted. A description of the technical content. For the description of the omitted part, reference may be made to the foregoing embodiments, and details are not repeated here.

The difference between the touch unit TUb in FIG. 5A to FIG. 5E and the touch unit TUa in FIG. 4A to FIG. 4E is that: in the embodiment of FIG. 5A to FIG. 5F , each touch unit TUb includes twelve first bridge parts 114 and twelve second bridging portions 124 .

Based on the above, in this embodiment, each touch unit TUb includes more than two of the first bridging portions 114 and more than two of the second bridging portions 124 . Therefore, compared with the touch unit having only one first bridge portion and one second bridge portion, the touch unit TUb of this embodiment can more accurately identify the amount of change in capacitance caused by touch.

6A and 6B are schematic top views of a touch unit of a touch device according to an embodiment of the present invention. FIG. 6C is a schematic top view of the first main body portion 112 and the first bridging portion 114 in the conductive mesh MS. FIG. 6D is a schematic top view of the second main body 122 in the conductive mesh MS. FIG. 6E is a schematic top view of the dummy electrodes DE in the conductive mesh MS.

It should be noted that, in FIGS. 6A and 6C to 6E, the first body portion 112, the first bridge portion 114, the second body portion 122, and the dummy electrodes DE of the conductive mesh MS include different line widths, but this is only for illustration. It is convenient to identify different parts of the conductive mesh MS. Actually, the first body part 112 , the first bridge part 114 , the second body part 122 and the dummy electrode DE of the conductive mesh MS may include the same line width.

It must be noted here that the embodiment of Fig. 6A to Fig. 6E follows the component numbers and part of the content of the embodiment of Fig. 4A to Fig. 4E, wherein the same or similar symbols are used to represent the same or similar components, and the same or similar components are omitted. A description of the technical content. For the description of the omitted part, reference may be made to the foregoing embodiments, and details are not repeated here.

The difference between the touch unit TUc in FIG. 6A to FIG. 6E and the touch unit TUa in FIG. 4A to FIG. 4E is that: in the embodiment of FIG. 6A to FIG. 6E , each touch unit TUc includes sixteen first bridge parts 114 and sixteen second bridging portions 124 .

Based on the above, in this embodiment, each touch unit TUc includes more than two of the first bridge portions 114 and more than two of the second bridge portions 124 . Therefore, compared with the touch unit with only one first bridge portion and one second bridge portion, the touch unit TUc of this embodiment can more accurately identify the capacitance variation caused by touch.

1: Touch display device 10: Touch device 20: Display panel 30:Backlight module 40: Outer frame 100: Substrate 110: first electrode 112: The first main body 114: The first bridging part 120: second electrode 122: The second main body 124: Second bridging part 130: the first wire 140: second wire 150: first pad 160: Second pad 170: drive circuit 200: first substrate 210: active element array 220: liquid crystal layer 230: filter element 240: second substrate 250: Shielding structure 260: the first polarizer 270: second polarizer E1: first direction E2: Second direction E3: Third direction IL: insulating layer MS: conductive mesh oc: glue material P: stylus TU, TUa, Tub, TUc: touch unit W1, W2: width

FIG. 1 is a schematic top view of a touch device according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of a touch display device according to an embodiment of the present invention. 3A and 3B are schematic top views of a touch unit of a touch device according to an embodiment of the present invention. FIG. 3C is a schematic cross-sectional view of the line a-a' in FIG. 3A and FIG. 3B . FIG. 3D is a schematic top view of a first main body portion and a first bridging portion in the conductive network shown in FIG. 3A . FIG. 3E is a schematic top view of the second main body in the conductive mesh of FIG. 3A . FIG. 3F is a schematic top view of a dummy electrode in the conductive mesh of FIG. 3A . 4A and 4B are schematic top views of a touch unit of a touch device according to an embodiment of the present invention. FIG. 4C is a schematic top view of a first main body portion and a first bridging portion in the conductive network shown in FIG. 4A . FIG. 4D is a schematic top view of the second main body in the conductive mesh of FIG. 4A . FIG. 4E is a schematic top view of a dummy electrode in the conductive mesh of FIG. 4A . 5A and 5B are schematic top views of a touch unit of a touch device according to an embodiment of the present invention. FIG. 5C is a schematic top view of a first main body portion and a first bridging portion in the conductive network shown in FIG. 5A . FIG. 5D is a schematic top view of a second main body in the conductive mesh of FIG. 5A . FIG. 5E is a schematic top view of a dummy electrode in the conductive mesh of FIG. 5A . 6A and 6B are schematic top views of a touch unit of a touch device according to an embodiment of the present invention. FIG. 6C is a schematic top view of a first main body portion and a first bridging portion in the conductive mesh of FIG. 6A . FIG. 6D is a schematic top view of the second main body in the conductive mesh of FIG. 6A . FIG. 6E is a schematic top view of a dummy electrode in the conductive mesh of FIG. 6A .

10: Touch device

100: Substrate

110: first electrode

120: second electrode

130: the first wire

140: second wire

150: first pad

160: Second pad

170: drive circuit

E1: first direction

E2: Second direction

P: stylus

TU: touch unit

W1: width

Claims (9)

A touch device, comprising: a conductive network, including: a plurality of first body parts; a plurality of first bridge parts, the first bridge parts are connected to the first body parts to form a plurality of first electrodes; and a plurality of a second body part, separated from the first body parts and the first bridging parts; an insulating layer, located on the conductive net, and having a plurality of openings; a plurality of second bridging parts, located on the insulating layer , and overlap the first bridging portions, wherein the second bridging portions connect the second body portions through the openings of the insulating layer to form a plurality of second electrodes, wherein the first electrodes and the The second electrodes are interlaced to define a plurality of touch units, each of which is defined by a corresponding one of the first electrodes and a corresponding one of the second electrodes, and each of the touch units includes the more than two of the first bridge parts and more than two of the second bridge parts; and a plurality of dummy electrodes separated from the first body parts, the second body parts and the first bridge parts department. The touch device according to claim 1, wherein the line width of the conductive network is 2 μm to 20 μm, and the grid width of the conductive network is 100 μm to 1000 μm. The touch device according to claim 1, wherein the width of each touch unit is 3 mm to 10 mm, and the length of each touch unit is 3 mm to 10 mm. The touch device according to claim 1, wherein each of the touch units includes six of the first bridges, nine of the first bridges, and twelve of the first bridges one or sixteen of the first bridging parts. The touch device according to claim 1, wherein each of the touch units includes six of the second bridges, nine of the second bridges, and twelve of the second bridges or sixteen of the second bridging parts. The touch device according to claim 1, wherein each of the second bridges crosses a corresponding one of the first bridges. The touch device according to claim 1, wherein the gaps between the second main parts and the adjacent first main parts are less than or equal to 20 microns. The touch device according to claim 1, further comprising: a substrate; a plurality of first pads located on the substrate and electrically connected to the first electrodes; a plurality of second pads located on the substrate and electrically connected to the second electrodes; the driving circuit is electrically connected to the first pads and the second pads, wherein each touch unit passes through a corresponding first pad and a corresponding A second pad is electrically connected to the driving circuit. The touch device according to claim 1, wherein the touch device is suitable for a stylus, and the width of the tip of the stylus is 1 mm to 5 mm.

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