Touch device

Abstract

The present invention discloses a touch control device, which includes a conductive network, an insulating layer, and a plurality of second bridging portions. The conductive network is located on a substrate and includes a plurality of first main portions, a plurality of first bridging portions, and a plurality of second main portions. The first bridging portions connect the first main portions to form a plurality of first electrodes. The insulating layer is located on the conductive network and has a plurality of openings. The second bridging portions are located on the insulating layer and overlap the first bridging portions. The second bridging portions connect to the second main portions through the openings of the insulating layer to form a plurality of second electrodes. The first electrodes and the second electrodes are staggered to define a plurality of touch control units. Each touch control unit is defined by a corresponding one of the first electrodes and a corresponding one of the second electrodes. Each touch control unit includes more than two of the first bridging portions.

Description

Technical Field

[0001] The present invention relates to a touch device, and more particularly to a touch device including a conductive network. Background Art

[0002] With the progress of technology, the appearance rate of touch devices in the market has gradually increased, and various related technologies have emerged in an endless stream. In some electronic devices, such as mobile phones, tablet computers, smart watches, etc., the touch device is often combined with a display panel to improve the convenience of use of the electronic device.

[0003] In some touch devices, the interlaced electrodes form a plurality of touch units. When the 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 in the capacitance of the touch units. In order to perform more precise operations on the touch device, many people have tried to use a stylus to control the touch device. However, since the tip of the stylus is smaller than the fingertip of a human finger, when the stylus touches the touch device, it can only change the capacitance of the touch units in a relatively small range. Therefore, it is difficult to accurately identify the exact position of the stylus. Summary of the Invention

[0004] The present invention provides a touch device that can improve the accuracy of judging touch signals.

[0005] At least one embodiment of the present invention provides a touch device. The touch device includes a conductive network, an insulating layer, and a plurality of second bridging portions. The conductive network includes a plurality of first main portions, a plurality of first bridging portions, and a plurality of second main portions. The first bridging portions connect the first main portions to form a plurality of first electrodes. The second main portions are separated from the first main portions and the first bridging portions. The insulating layer is located on the conductive network and has a plurality of openings. The second bridging portions are located on the insulating layer and overlap the first bridging portions. The second bridging portions are connected to the second main portions through the openings of the insulating layer to form a plurality of second electrodes. The first electrodes and the second electrodes are interlaced 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 bridging portions and more than two of the second bridging portions. Brief Description of the Drawings

[0006] Figure 1 is a top view schematic diagram of a touch device according to an embodiment of the present invention;

[0007] Figure 2 is a cross-sectional schematic diagram of a touch display device according to an embodiment of the present invention;

[0008] Figure 3A and Figure 3BIt is a top view schematic diagram of a touch unit of a touch device according to an embodiment of the present invention;

[0009] Figure 3C is Figure 3A and Figure 3B a cross-sectional schematic diagram of the line a-a' of;

[0010] Figure 3D is Figure 3A a top view schematic diagram of a first main body portion and a first bridging portion in a conductive network of;

[0011] Figure 3E is Figure 3A a top view schematic diagram of a second main body portion in a conductive network of;

[0012] Figure 3F is Figure 3A a top view schematic diagram of a dummy electrode in a conductive network of;

[0013] Figure 4A and Figure 4B It is a top view schematic diagram of a touch unit of a touch device according to an embodiment of the present invention;

[0014] Figure 4C is Figure 4A a top view schematic diagram of a first main body portion and a first bridging portion in a conductive network of;

[0015] Figure 4D is Figure 4A a top view schematic diagram of a second main body portion in a conductive network of;

[0016] Figure 4E is Figure 4A a top view schematic diagram of a dummy electrode in a conductive network of;

[0017] Figure 5A and Figure 5B It is a top view schematic diagram of a touch unit of a touch device according to an embodiment of the present invention;

[0018] Figure 5C is Figure 5A a top view schematic diagram of a first main body portion and a first bridging portion in a conductive network of;

[0019] Figure 5D is Figure 5A a top view schematic diagram of a second main body portion in a conductive network of;

[0020] Figure 5E is Figure 5A a top view schematic diagram of a dummy electrode in a conductive network of;

[0021] Figure 6A andFigure 6B A top view schematic diagram of a touch unit of a touch device according to an embodiment of the present invention;

[0022] Figure 6C is Figure 6A A top view schematic diagram of a first main body portion and a first bridging portion in a conductive network of;

[0023] Figure 6D is Figure 6A A top view schematic diagram of a second main body portion in a conductive network of;

[0024] Figure 6E is Figure 6A A top view schematic diagram of a dummy electrode in a conductive network of.

[0025] Symbol description

[0026] 1: Touch display device

[0027] 10: Touch device

[0028] 20: Display panel

[0029] 30: Backlight module

[0030] 40: Outer frame

[0031] 100: Substrate

[0032] 110: First electrode

[0033] 112: First main body portion

[0034] 114: First bridging portion

[0035] 120: Second electrode

[0036] 122: Second main body portion

[0037] 124: Second bridging portion

[0038] 130: First wire

[0039] 140: Second wire

[0040] 150: First pad

[0041] 160: Second pad

[0042] 170: Driving circuit

[0043] 200: First substrate

[0044] 210: Active element array

[0045] 220: Liquid crystal layer

[0046] 230: Filter element

[0047] 240: Second substrate

[0048] 250: Masking structure

[0049] 260: First polarizer

[0050] 270: Second polarizer

[0051] E1: First direction

[0052] E2: Second direction

[0053] E3: Third direction

[0054] IL: Insulating layer

[0055] MS: Conductive network

[0056] oc: Adhesive material

[0057] P: Stylus

[0058] TU, TUa, Tub, TUc: Touch unit

[0059] W1, W2: Width Detailed implementation manner

[0060] Figure 1 It is a top view schematic diagram of a touch device according to an embodiment of the present invention.

[0061] Please refer to Figure 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 second pads 160, and a driving circuit 170.

[0062] 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.

[0063] A plurality of first electrodes 110 and a plurality of second electrodes 120 are located on the substrate 100. The first electrodes 110 and the second electrodes 120 are staggered 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, where the first direction E1 intersects 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.

[0064] In some embodiments, the overlapping portion of the first electrode 110 and the second electrode 120 is separated by an insulating layer ( Figure 1 not shown), thereby preventing the first electrode 110 from directly contacting the second electrode 120.

[0065] In this embodiment, the touch units TU are arranged in an array along a first direction E1 and a 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.

[0066] A plurality of first pads 150 and a plurality of second pads 160 are located on the substrate 100. The first pads 150 are electrically connected to the first electrode 110 through the first wires 130, and the second pads 160 are electrically connected to the second electrode 120 through the second wires 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 second pad 160 through a corresponding second electrode 120 and a corresponding second wire 140.

[0067] The driving circuit 170 is electrically connected to the first pads 150 and the second pads 160. In some embodiments, the driving circuit 170 is bonded to the first pads 150 and the second pads 160. For example, the driving circuit 170 is bonded to the first pads 150 and the second pads 160 through solder, conductive adhesive, or other conductive connection structures.

[0068] In some embodiments, the driving circuit 170 includes a chip package structure, and the driving circuit 170 is adapted to perform 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.

[0069] In some embodiments, the touch device 10 is adapted to a stylus P, and the tip width W1 of the stylus P is from 1 millimeter to 5 millimeters. In some embodiments, the stylus P is an active stylus. In other embodiments, the touch device 10 is also adapted to finger touch.

[0070] Figure 2 is a cross-sectional schematic diagram of a touch display device according to an embodiment of the present invention. It must be noted here that Figure 2 The embodiments of Figure 1Element numbers and partial content of the embodiments, where the same or similar numbers are used to represent the same or similar elements, and descriptions of the same technical content are omitted. For descriptions of the omitted parts, reference can be made to the foregoing embodiments and will not be elaborated herein.

[0071] Please refer to Figure 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.

[0072] The display panel 20 includes a first substrate 200, an active element array 210, a liquid crystal layer 220, a light filtering element 230, a second substrate 240, a shielding structure 250, a first polarizer 260, and a second polarizer 270.

[0073] The first substrate 200 and the second substrate 240 include transparent substrates, and their materials are, for example, glass, quartz, organic polymers, or other applicable materials. The first substrate 200 and the second substrate 240 are, for example, rigid substrates or flexible substrates.

[0074] The active element array 210, the liquid crystal layer 220, and the light filtering element 230 are located between the first substrate 200 and the second substrate 240.

[0075] The first polarizer 260 and the second polarizer 270 are respectively located outside the first substrate 200 and the second substrate 240. 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.

[0076] The shielding structure 250 includes a transparent conductive material, such as indium tin oxide. The shielding structure 250 is applicable to avoid the electric field generated by the touch device 10 from affecting the image displayed on the display panel 20.

[0077] 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 present 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.

[0078] The display panel 20 and the backlight module 30 are disposed in the outer 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 through an adhesive oc, and the adhesive oc is, for example, an optically clear adhesive (OCA), a 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 ( Figure 1 substrate 100) of the touch device 10 is the second substrate 240 of the display panel 20. In this case, the shielding structure 250 can be omitted.

[0079] Figure 3A And Figure 3B is a top view schematic diagram of a touch unit TU of a touch device according to an embodiment of the present invention, where Figure 3A the conductive grid is illustrated and other components are omitted, Figure 3B the insulating layer and the second bridging portion are illustrated and other components are omitted. Figure 3C Is Figure 3A And Figure 3B a cross-sectional schematic diagram taken along line a-a' of. Figure 3D is a top view schematic diagram of the first main body portion 112 and the first bridging portion 114 in the conductive grid MS. Figure 3E is a top view schematic diagram of the second main body portion 122 in the conductive grid MS. FIG. 3F is a top view schematic diagram of the dummy electrode DE in the conductive grid MS.

[0080] It should be noted that in Figure 3A and FIGS. 3D to 3F, the first main body portion 112, the first bridging portion 114, the second main body portion 122, and the dummy electrode DE of the conductive grid MS include different line widths, but this is only for facilitating the identification of different parts of the conductive grid MS. In fact, the first main body portion 112, the first bridging portion 114, the second main body portion 122, and the dummy electrode DE of the conductive grid MS can include the same line width.

[0081] Figures 3A to 3C For explaining Figure 1 the touch unit of the touch device, for other components of the touch device, please refer to Figure 1 and will not be elaborated herein.

[0082] Please refer to Figures 3A to 3F The touch device includes a conductive grid MS, an insulating layer IL, and a plurality of second bridging portions 124.

[0083] Please refer to Figure 3A, the line width of the conductive grid MS is from 2 micrometers to 20 micrometers, and the width W2 of the grid of the conductive grid is from 100 micrometers to 1000 micrometers. In some embodiments, the material of the conductive grid MS includes metal, metal oxide, metal nitride, or other suitable materials. The method of forming the conductive grid MS includes, for example, a photolithography etching manufacturing process.

[0084] The conductive grid MS includes a plurality of first main body portions 112, a plurality of first bridging portions 114, and a plurality of second main body portions 122. The second main body portions 122 are separated from the first main body portions 112 and the first bridging portions 114. For example, the gap between the second main body portion 122 and the adjacent first main body portion 112 and the gap between the second main body portion 122 and the adjacent first bridging portion 114 are less than or equal to 20 micrometers.

[0085] In this embodiment, the plurality of first main body portions 112 are electrically connected to each other through the plurality of first bridging portions 114, and the first bridging portions 114 connect the first main body portions 112 to form a first electrode 110 extending along the first direction E1. In other words, in a single touch unit TU, the first electrode 110 extending along the first direction E1 includes a plurality of first main body portions 112 and a plurality of first bridging portions 114. In this embodiment, the portion with a wider width in the first electrode 110 is defined as the first main body portion 112, and the portion with a narrower width and overlapping the second bridging portion 124 (drawn in Figure 3B ) is defined as the first bridging portion 114, where the first bridging portion 114 is located within the area circled by the dotted circle in Figure 3A . In this embodiment, a single first bridging portion 114 only includes a single wire in the conductive grid MS, but the present invention is not limited thereto. In other embodiments, a single first bridging portion 114 includes two or more wires in the conductive grid MS.

[0086] In this embodiment, the first electrodes 110 in the touch units TU adjacent in the first direction E1 are directly connected to each other, while the first electrodes 110 in the touch units TU adjacent in the second direction E2 are separated from each other. For example, in Figure 3A , the first main body portion 112 located at the uppermost side is connected to other touch units TU not shown above, and the first main body portion 112 located at the lowermost side is connected to other touch units TU not shown below.

[0087] In this embodiment, the conductive grid MS further includes a dummy electrode DE. The dummy electrode DE is separated from the first main body portions 112, the first bridging portions 114, and the second main body portions 122. The dummy electrode DE is a floating electrode. In some embodiments, the dummy electrode DE is surrounded by the first main body portions 112 and / or the second main body portions 122.

[0088] The insulating layer IL is located on the conductive network MS. In this embodiment, the insulating layer IL is located on the first main body portion 112, the first bridging portion 114, the second main body portion 122, and the dummy electrode DE. The insulating layer IL has a plurality of openings O. The openings O overlap the second main body portion 122, and the openings O do not overlap the first main 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 main 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 from 0.3 micrometers to 5 micrometers.

[0089] The second bridging portion 124 is located on the insulating layer IL and overlaps the first bridging portion 114. The second bridging portion 124 connects to the second main 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 main body portions 122 and a plurality of second bridging portions 124. In this embodiment, the pattern of the second bridging portion 124 projected vertically onto the substrate 100 overlaps the pattern of the conductive network MS projected vertically onto the substrate 100, thereby improving the quality of the display screen. In other words, the shape of the second bridging portion 124 projected vertically onto the substrate 100 and the shape of the conductive network MS projected vertically onto the substrate 100 can be regarded as a mesh structure together, thereby avoiding the appearance of uneven brightness traces (MURA) on the display screen at the position of the second bridging portion 124. In some embodiments, the line width of the second bridging portion 124 is equal to or slightly larger than the line width of the conductive network MS. In some embodiments, the material of the second bridging portion 124 includes metals, metal oxides (such as indium tin oxide), metal nitrides, or other suitable materials. The method of forming the second bridging portion 124 includes, for example, a photolithography etching manufacturing process.

[0090] In this embodiment, each second bridging portion 124 straddles a corresponding first bridging portion 114 and electrically connects the second main body portions 122 on both sides of the corresponding first bridging portion 114.

[0091] 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 Figure 3A the second main body portion 122 located on the far left is connected to other touch units TU not shown on the left, and the second main body portion 122 located on the far right is connected to other touch units TU not shown on the right.

[0092] In the touch unit TU, the first bridging portion 114 and the second bridging portion 124 overlap in the third direction E3 perpendicular to the substrate 100. In other words, in the touch unit TU of the present embodiment, the first electrode 110 and the second electrode 120 have multiple overlapping positions in the third direction E3.

[0093] In a single touch unit TU, the greater the number of the first bridging portion 114 and the second bridging portion 124, the higher the amount of capacitance change generated during touch. Therefore, when operating the touch device, even if the area of touch (such as the tip area of a stylus) is small, the touch position can still be accurately identified.

[0094] In the present embodiment, each touch unit TU includes two or more of the first bridging portion 114 and two or more of the second bridging portion 124. Therefore, compared with a touch unit having only one first bridging portion and one second bridging portion, the touch unit TU of the present embodiment can more accurately identify the amount of capacitance change caused by touch.

[0095] In some embodiments, each touch unit TU includes six, nine, twelve, or sixteen first bridging portions 114 and six, nine, twelve, or sixteen second bridging portions 124. In the present embodiment, each touch unit TU includes six first bridging portions 114 and six second bridging portions 124.

[0096] In addition, in the present embodiment, the length L of a single touch unit TU is 3 millimeters to 10 millimeters, and the width W is 3 millimeters to 10 millimeters.

[0097] Table 1 shows the simulation data of the capacitance values of the first electrode 110 and the second electrode 120 and the corresponding shielding structure (shown in Figure 3A and Figure 3B ) in a touch unit (shown in Figure 2 ) of the touch device before being touched.

[0098] Table 1

[0099] First electrode Second electrode Masking structure First electrode 2.578 pF -1.622 pF -0.956 pF Second electrode -1.586 pF 2.479 pF -0.892 pF

[0100] As can be seen from Table 1, based on the first electrode, the capacitance value between the first electrode and other conductive objects (including the second electrode and the shielding structure) is 2.578 pF, and the capacitance value between the first electrode and the second electrode is -1.622 pF. Based on the second electrode, the capacitance value between the second electrode and other objects (including the first electrode and the shielding structure) is 2.479 pF, and the capacitance value between the second electrode and the first electrode is -1.586 pF. As can be seen from Table 1, the capacitance value between the first electrode and the second electrode is approximately 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.

[0101] Table 2 shows the capacitance simulation data of the first electrode 110 and the second electrode 120 and the corresponding shielding structure (shown in Figure 3A and Figure 3B ) and the finger (or stylus) in a touch unit of the touch device when being touched. Figure 2 ) and the finger (or stylus).

[0102] Table 2

[0103]

[0104] As can be seen from Table 2, based on the first electrode, the capacitance value between the first electrode and other objects (including the second electrode, the finger, and the shielding structure) is 2.805 pF, and the capacitance value between the first electrode and the second electrode is -1.301 pF. Based on the second electrode, the capacitance value between the second electrode and other objects (including the first electrode, the finger, and the shielding structure) is 2.742 pF, and the capacitance value between the second electrode and the first electrode is -1.311 pF. As can be seen from Table 2, the capacitance value between the first electrode and the second electrode is approximately 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 value between the finger (or stylus) and the first electrode is -0.652 pF, and the capacitance value between the finger (or stylus) and the second electrode is -0.618 pF.

[0105] Combining the data in Table 1 and Table 2, it can be known that the capacitance value between the first electrode and the second electrode is approximately -1.604 pF before being touched, and approximately -1.306 pF after being touched. Based on the foregoing, there is sufficient capacitance induction between the first electrode and the second electrode in this embodiment, and the capacitance change amount generated by touching is approximately 0.3 pF.

[0106] It should be noted that Table 1 and Table 2 are only the simulation results of the capacitance values of the touch control units in one embodiment of the present invention, and are not used to limit the actual magnitudes of the capacitance values of the touch control units of the embodiments of the present invention. The actual magnitudes of the capacitance values of the touch control units of the embodiments of the present invention can be adjusted according to requirements.

[0107] Figure 4A And Figure 4B is a top view schematic diagram of a touch control unit of a touch control device according to an embodiment of the present invention. Figure 4C is a top view schematic diagram of the first main body portion 112 and the first bridging portion 114 in the conductive grid MS. Figure 4D is a top view schematic diagram of the second main body portion 122 in the conductive grid MS. Figure 4E is a top view schematic diagram of the dummy electrode DE in the conductive grid MS.

[0108] It should be noted that in Figure 4A and 4C to 4E, the first main body portion 112, the first bridging portion 114, the second main body portion 122, and the dummy electrode DE of the conductive grid MS include different line widths, but this is only for facilitating the identification of different parts of the conductive grid MS. In fact, the first main body portion 112, the first bridging portion 114, the second main body portion 122, and the dummy electrode DE of the conductive grid MS can include the same line width.

[0109] It must be noted here that Figures 4A to 4E the embodiments of Figures 3A to 3F adopt the component numbers and some contents of the embodiments of

[0110] Figures 4A to 4E The touch control unit TUa of Figures 3A to 3F and the touch control unit TU of Figures 4A to 4E differ in that: in the embodiments of

[0111] each touch control unit TUa includes nine first bridging portions 114 and nine second bridging portions 124.

[0112] Based on the above, in this embodiment, each touch unit TUa includes more than two in the first bridging portion 114 and more than two in the second bridging portion 124. Therefore, compared with a touch unit having only one first bridging portion and one second bridging portion, the touch unit TUa of this embodiment can more accurately identify the capacitance change amount caused by a touch.

[0113] Figure 5A And Figure 5B is a top view schematic diagram of a touch unit of a touch device according to an embodiment of the present invention. Figure 5C is a top view schematic diagram of the first main body portion 112 and the first bridging portion 114 in the conductive grid MS. Figure 5D is a top view schematic diagram of the second main body portion 122 in the conductive grid MS. Figure 5E is a top view schematic diagram of the dummy electrode DE in the conductive grid MS.

[0114] It should be noted that in Figure 5A and 5C to 5E, the first main body portion 112, the first bridging portion 114, the second main body portion 122, and the dummy electrode DE of the conductive grid MS include different line widths, but this is only for facilitating the identification of different parts of the conductive grid MS. In fact, the first main body portion 112, the first bridging portion 114, the second main body portion 122, and the dummy electrode DE of the conductive grid MS can include the same line width.

[0115] It must be explained here that Figures 5A to 5E the embodiment of Figures 4A to 4E adopts the component numbers and partial contents of the embodiment of

[0116] Figures 5A to 5E The difference between the touch unit TUb of Figures 4A to 4E and the touch unit TUa is that: in the embodiment of Figures 5A to 5E each touch unit TUb includes twelve first bridging portions 114 and twelve second bridging portions 124.

[0117] Based on the above, in this embodiment, each touch unit TUb includes more than two in the first bridging portion 114 and more than two in the second bridging portion 124. Therefore, compared with a touch unit having only one first bridging portion and one second bridging portion, the touch unit TUb of this embodiment can more accurately identify the capacitance change amount caused by a touch.

[0118] Figure 6A And Figure 6BIt is a top view schematic diagram of a touch unit of a touch device according to an embodiment of the present invention. Figure 6C It is a top view schematic diagram of the first main body portion 112 and the first bridging portion 114 in the conductive network MS. Figure 6D It is a top view schematic diagram of the second main body portion 122 in the conductive network MS. Figure 6E It is a top view schematic diagram of the dummy electrode DE in the conductive network MS.

[0119] It should be noted that in Figure 6A as well as 6C to 6E, the first main body portion 112, the first bridging portion 114, the second main body portion 122, and the dummy electrode DE of the conductive network MS include different line widths, but this is only for facilitating the identification of different parts of the conductive network MS. In fact, the first main body portion 112, the first bridging portion 114, the second main body portion 122, and the dummy electrode DE of the conductive network MS can include the same line width.

[0120] It must be explained here that Figures 6A to 6E the embodiment of Figures 4A to 4E adopts the component numbers and partial contents of the embodiment of

[0121] Figures 6A to 6E The touch unit TUc of Figures 4A to 4E differs from the touch unit TUa of Figures 6A to 6E in that in the embodiment of

[0122] each touch unit TUc includes sixteen first bridging portions 114 and sixteen second bridging portions 124.

[0122] Based on the above, in this embodiment, each touch unit TUc includes more than two of the first bridging portions 114 and more than two of the second bridging portions 124. Therefore, compared with a touch unit having only one first bridging portion and one second bridging portion, the touch unit TUc of this embodiment can more accurately identify the capacitance change amount caused by touch.

Claims

1. A touch device, comprising: A conductive network, comprising: A plurality of first body parts; A plurality of first bridging parts, the first bridging parts connecting the first body parts to form a plurality of first electrodes, each of the first electrodes extending along a first direction; and A plurality of second body parts, separated from the first body parts and the first bridging parts; An insulating layer, located on the conductive network and having a plurality of openings, wherein the thickness of the insulating layer is 0.3 micrometers to 5 micrometers; and A plurality of second bridging parts, located on the insulating layer and overlapping the first bridging parts, wherein the second bridging parts connect the second body parts through the openings of the insulating layer to form a plurality of second electrodes, wherein each of the second electrodes extends along a second direction intersecting the first direction, the first electrodes and the second electrodes intersecting to define a plurality of touch units, each of the touch units being defined by only one corresponding one of the first electrodes and only one corresponding one of the second electrodes, and each of the touch units including more than two of the first bridging parts and more than two of the second bridging parts, the more than two of the first bridging parts including a first first bridging part and a second first bridging part respectively located on opposite sides of one of the plurality of first body parts in the first direction, the more than two of the second bridging parts including a first second bridging part and a second second bridging part respectively located on opposite sides of one of the plurality of second body parts in the second direction, and each of the touch units including at least three second body parts and at least three accommodation spaces respectively for accommodating the at least three second body parts, each of the accommodation spaces being formed by connecting two opposite first body parts and two opposite first bridging parts, wherein the line width of the conductive network is 2 micrometers to 20 micrometers, wherein the gap between the second body parts and the adjacent first body parts is less than or equal to 20 micrometers, and the width of the grid of the conductive network is 100 micrometers to 1000 micrometers, wherein the touch device is applicable to a stylus pen, and the tip width of the stylus pen is 1 millimeter to 5 millimeters.

2. The touch device according to claim 1, wherein the conductive network further comprises: A plurality of dummy electrodes, separated from the first body parts, the second body parts and the first bridging parts.

3. The touch device according to claim 1, wherein the width of each of the touch units is 3 millimeters to 10 millimeters, and the length of each of the touch units is 3 millimeters to 10 millimeters.

4. The touch device according to claim 1, wherein each of the touch units includes six, nine, twelve or sixteen of the first bridging parts.

5. The touch device according to claim 1, wherein each of the touch units includes six, nine, twelve or sixteen of the second bridging parts.

6. The touch device according to claim 1, wherein each of the second bridging parts straddles a corresponding one of the first bridging parts.

7. 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; A driving circuit, electrically connected to the first pads and the second pads, wherein each touch unit is electrically connected to the driving circuit through a corresponding first pad and a corresponding second pad.

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