Touch Panel

Abstract

The present invention discloses a touch panel, which includes a substrate, a first conductive layer, an insulating layer and a second conductive layer. The first conductive layer is disposed on the substrate, and the first conductive layer includes first wirings, each extending along a first direction. The insulating layer is disposed on the first conductive layer. The second conductive layer is disposed on the insulating layer, and the second conductive layer includes a plurality of second wirings, each extending along a second direction, wherein the second wirings cross over the first wirings and are insulated from the first wirings, and the width of one of the second wirings is smaller than the width of the first wirings. In this way, the electrostatic discharge generated by the cross-line structure and / or the wiring breakage can be reduced.

Description

Technical Field

[0001] The invention relates to a touch panel, in particular to a touch panel with a cross-line structure. Background Art

[0002] In common capacitive touch panels, multiple sensing electrodes are provided to sense the user's touch. In order to transmit signals to or receive signals from the sensing electrodes, multiple wires are required to be electrically connected to externally connected pads. However, in existing touch panels, there is a cross-line structure that is prone to electrostatic discharge (ESD). Specifically, Figure 1 The figure shows a cross-sectional schematic diagram of the existing cross-line structure. Figure 1 As shown, the crossover structure 10 is disposed on a substrate 12 and is composed of a trace 14, a trace 16 and an insulating layer 18, and the trace 14, the insulating layer 18 and the trace 16 are sequentially formed on the substrate 12. In the conventional crossover structure 10, the trace 14 extends along a direction HD1, and the trace 16 extends along a direction HD2 and crosses over a plurality of traces 14, so as to electrically connect circuits or components located on both sides of the trace 14. Generally speaking, the number of traces 14 is greater than the number of traces 16, and the width of the trace 16 in the direction HD1 is much greater than the width of the trace 14 in the direction HD2, so when the trace 16 crosses over the trace 14, it will present a wavy cross section along the ups and downs formed by the trace 14. Due to the influence of process conditions and materials when forming the wiring 14 and the insulating layer 18, the corners between the upper surface and the sidewall of the wiring 14 and the upper surface of the insulating layer 18 cannot have good smoothness, resulting in the wiring 16 formed on the insulating layer 18 being prone to electrostatic discharge at the high and low turning points (such as Figure 1 The product may be defective as shown in the explosion pattern in the figure. Summary of the invention

[0003] The technical problem to be solved by the present invention is to reduce the electrostatic discharge generated by the cross-line structure and / or reduce the breakage of the wiring, so as to improve the product yield.

[0004] To solve the above technical problems, an embodiment of the present invention provides a touch panel, which includes a substrate, a first conductive layer, an insulating layer and a second conductive layer. The first conductive layer is disposed on the substrate, and the first conductive layer includes first traces extending along a first direction respectively. The insulating layer is disposed on the first conductive layer. The second conductive layer is disposed on the insulating layer, and the second conductive layer includes a plurality of second traces extending along a second direction respectively, wherein the second traces cross the first traces and are insulated from the first traces, and the width of one of the second traces is smaller than the width of the first trace.

[0005] In the touch panel of the present invention, by setting the first routing line with a larger width between the substrate and the second routing line with a smaller width, the portion of the routing line encountering an uneven surface with a height difference can be effectively reduced, thereby reducing the height turning portion of the routing line, thereby reducing electrostatic discharge and / or breakage caused by the turning, thereby improving product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 Shown is a cross-sectional schematic diagram of the existing cross-line structure.

[0007] Figure 2 FIG. 1 is a schematic cross-sectional view of a touch display device according to an embodiment of the present invention.

[0008] Figure 3 FIG. 1 is a schematic top view of a touch panel according to an embodiment of the present invention.

[0009] Figure 4 Shown Figure 3 An enlarged schematic diagram of a cross-line structure in FIG.

[0010] Figure 5 Shown along Figure 4 Schematic cross-sectional view of section line AA'.

[0011] Figure 6 FIG. 1 is an enlarged schematic diagram of a crossover structure between a touch area and a pad area according to a variation of the present invention.

[0012] Figure 7 Shown Figure 3 An enlarged schematic diagram of another cross-line structure in .

[0013] The reference numerals are described as follows:

[0014] 14, 16 Routing

[0015] 20 Touch display device

[0016] 100 Touch Panel

[0017] 10, 102, 1021, 1021a, 1022 cross-line structure

[0018] 12, 104 substrate

[0019] 106 first conductive layer

[0020] 18, 108 insulation layer

[0021] 108a Insulation block

[0022] 108h1, 108h2, 108h3, 108h4, 108h5, 108h6 contact holes

[0023] 110 second conductive layer

[0024] 112 First sensing string

[0025] 112a First sensing pad

[0026] 112b First bridge connection

[0027] 114 Second sensing string

[0028] 114a Second sensing pad

[0029] 114b Second bridge connection

[0030] 116 pads

[0031] 118 Third Route

[0032] 1201-120 M First line

[0033] 1221-122 N Second route

[0034] 124 Fourth Route

[0035] 126 Connection line

[0036] 128 Notch

[0037] 1301-130 O Fifth route

[0038] 1321-132 P The sixth route

[0039] 200 Display device

[0040] 200S display

[0041] A-A' section line

[0042] HD1, HD2, D1, D2 direction

[0043] ND Looking down direction

[0044] R1, R2 areas

[0045] PA pad area

[0046] TR routing area

[0047] TS Touch Area

[0048] W1, W2, W3, W4 Width DETAILED DESCRIPTION

[0049] The content of the present invention is described in detail below in conjunction with specific embodiments and drawings. In order to make the content of the present invention clearer and easier to understand, the elements in the following drawings may not be drawn to scale. Moreover, the number and size of each element in the drawings are only for illustration and are not intended to limit the scope of the present invention.

[0050] The ordinal numbers used in the specification and claims, such as "first", "second", etc., to modify the elements of the claims, do not themselves mean or represent any previous ordinal number of the claimed elements, nor do they represent the order of one claimed element and another claimed element, or the order in the manufacturing method. The use of these ordinal numbers is only used to clearly distinguish one claimed element with a certain name from another claimed element with the same name.

[0051] In the line-jumping structure of the present invention, a line with a larger width is arranged between a substrate and a line with a smaller width, so as to improve the surface flatness formed by the lower-layer line and reduce the range or length of the height turning of the upper-layer line, thereby reducing the degree of electrostatic discharge (ESD) generated by the line-jumping structure and / or reducing the breakage of the upper-layer line. In the present invention, the line-jumping structure can be applied to various devices requiring line-jumping, for example, it can be applied to touch panels, display devices or other suitable devices.

[0052] Figure 2 FIG. 2 is a cross-sectional schematic diagram of a touch display device according to an embodiment of the present invention. Figure 2 As shown, the touch display device 20 provided in this embodiment may include a touch panel 100 and a display device 200, and the touch panel 100 is disposed on the display surface 200S of the display device 200 to detect the position where the touch object touches or approaches the touch display device 20. In one embodiment, at least one cross-line structure 102 may be located in the touch panel 100. In another embodiment, at least one cross-line structure 102 may also be located in the display device 100. In yet another embodiment, the cross-line structure 102 may also be located in both the touch panel 100 and the display device 200. The cross-line structure 102 here may be applicable to the cross-line structure of any of the following embodiments.

[0053] The following will take the example that the cross-line structure 102 is located in the touch panel 100 for further details, but the present invention is not limited thereto. Figure 3 FIG. 1 is a schematic top view of a touch panel according to an embodiment of the present invention. Figure 4 Shown Figure 3 An enlarged schematic diagram of a cross-line structure in Figure 5 Shown along Figure 4 A schematic cross-sectional view of the cross-sectional line A-A'. Figure 3As shown, when viewed from the top view direction ND of the touch panel 100, the touch panel 100 may have a touch area TS and a routing area TR, wherein the touch area TS may be used to set a touch sensing element for detecting a touch object, and the routing area TR may be used to set a line, routing, pad or other suitable element that electrically connects the touch sensing element to the outside world. The routing area TR may be, for example, set on at least two sides of the touch area TS, but is not limited thereto. In one embodiment, when the touch panel 100 is applied to a display device, the touch area TS may be substantially the same as or slightly larger than the display area of ​​the display device, but is not limited thereto.

[0054] Specifically, if Figure 3 and Figure 5 As shown, the touch panel 100 may include a substrate 104, a first conductive layer 106, an insulating layer 108 and a second conductive layer 110, and the first conductive layer 106, the insulating layer 108 and the second conductive layer 110 are sequentially arranged on the substrate 104. The substrate 104 may include a hard substrate or a flexible substrate. The substrate 104 may, for example, include glass, polyimide (PI) or other suitable materials, but is not limited thereto. The top-view direction ND of the touch panel 100 may, for example, be perpendicular to the upper surface of the substrate 104. The first conductive layer 106, the insulating layer 108 and the second conductive layer 110 may form a touch sensing element for detecting the position of the touch object touching or approaching. In the present embodiment, the first conductive layer 106 may, for example, include metal, metal alloy or other suitable opaque conductive materials. The second conductive layer 110 may include, for example, a transparent conductive material, such as indium tin oxide, indium zinc oxide (IZO), antimony tin oxide (ATO), aluminum zinc oxide (AZO), graphene or other suitable materials, but is not limited thereto. By first forming a first conductive layer 106 including an opaque conductive material on the substrate 104, it can help to improve the alignment accuracy when patterning the insulating layer 108 and the second conductive layer 110, but the present invention is not limited thereto. In some embodiments, the first conductive layer 106 may also include a transparent conductive material, and the second conductive layer 110 may include an opaque conductive material or a transparent conductive material. Alternatively, when the first conductive layer 106 includes an opaque conductive material, the second conductive layer 110 may also include an opaque conductive material. In this case, the second conductive layer 110 may have a light-transmitting structure in the touch area TS so as not to affect the display image of the display device. The second conductive layer 110 may include, for example, a metal mesh.

[0055] exist Figure 3In the illustrated embodiment, the touch sensing element may include a plurality of first sensing strings 112 and a plurality of second sensing strings 114, wherein the first sensing strings 112 extend along a direction D1, respectively, and the second sensing strings 114 extend along another direction D2 and cross the first sensing strings 112, and the insulating layer 108 electrically insulates the first sensing strings 112 and the second sensing strings 114, so that capacitive coupling is generated between the first sensing strings 112 and the second sensing strings 114, thereby having a touch sensing function. In other words, the touch sensing element may be, for example, a mutual capacitance type, but is not limited thereto. In some embodiments, the touch sensing element may also be of other types, such as a self-capacitive type, a resistive type, or other suitable types.

[0056] In one embodiment, the first sensing string 112 may include a plurality of first sensing pads 112a and a plurality of first bridge lines 112b, wherein the first bridge lines 112b connect adjacent first sensing pads 112a arranged in the direction D1 to form a first sensing string 112 in series. The second sensing string 114 may include a plurality of second sensing pads 114a and a plurality of second bridge lines 114b, wherein the second bridge lines 114b connect adjacent second sensing pads 114a arranged in the direction D2 to form a second sensing string 114 in series, and when viewed along the top-view direction ND of the touch panel 100, the second sensing string 114 may cross the first bridge line 112b of the first sensing string 112 at the second bridge line 114b. In addition, the insulating layer 108 may include, for example, a plurality of insulating blocks 108a separated from each other, respectively disposed between the first bridge lines 112b and the corresponding second bridge lines 114b that cross each other, but is not limited thereto. In some embodiments, the insulating blocks 108a may also be connected to each other to form a whole insulating layer 108.

[0057] exist Figure 3 In the embodiment of the present invention, the second bridge line 114b may be formed by the first conductive layer 106, and the first sensing pad 112a, the second sensing pad 114a and the first bridge line 112b may be formed by the second conductive layer 110, but the present invention is not limited thereto. A person skilled in the art should know that the first sensing pad 112a and the second sensing pad 114a may be formed by the first conductive layer 106 and / or the second conductive layer 110, as long as the first bridge line 112b and the second bridge line 114b crossing each other are formed by different conductive layers and are electrically insulated by the insulating layer 108, but the present invention is not limited thereto.

[0058] like Figure 3As shown, the routing area TR may include a pad area PA, and the touch panel 100 may include a plurality of pads 116 disposed in the pad area PA, so that the touch sensing element can be electrically connected to external elements through the pads 116, such as being electrically connected to a flexible circuit board and a control element, but not limited thereto. In one embodiment, at least a portion of the pads 116 may be formed by the first conductive layer 106, but not limited thereto. In addition, the first conductive layer 106 may also include a plurality of third routing lines 118 disposed on the substrate 104 in the routing area TR, and used to electrically connect the first sensing string 112 and the second sensing string 114 to the pads 116 in the pad area PA, wherein one end of the third routing line 118 may be electrically connected to one end of the first sensing string 112 and the second sensing string 114, and the other end may be adjacent to the pad area PA. Although Figure 3 Only the third trace 118 is shown to be electrically connected to the first sensing string 112 extending along the direction D1, but the third trace 118 of the present invention is not limited thereto. In some embodiments, the first conductive layer 106 may also include a plurality of other third traces 118, each electrically connected to the corresponding second sensing string 114. In some embodiments, the first conductive layer 106 may also include a plurality of other third traces 118, so that both ends of the first sensing string 112 and / or the second sensing string 114 may be electrically connected to the pad area PA through different traces 118, but is not limited thereto. In some embodiments, the third trace 118 may also be formed by other conductive layers, for example, by the second conductive layer 110 or a conductive layer different from the first conductive layer 106 and the second conductive layer 110.

[0059] like Figure 3 As shown, the crossover structure 102 of the touch panel 100 may include a crossover structure 1021 for electrically connecting the third trace 118 to the pad 116. Through the crossover structure 1021, the third trace 118 may extend to the crossover structure 1021 without crossing each other, but is not limited thereto. Figure 4 and Figure 5 As shown, in the cross-line structure 1021, the first conductive layer 106 may include a plurality of first traces 1201-120 M , respectively extending along the direction D2 into the pad area PA to respectively connect to the corresponding pad 116, where M can be a positive integer. The second conductive layer 110 can include a plurality of second traces 1221-122 N , respectively extending along the direction D1, where N can be a positive integer. Figure 4 In the embodiment, each second trace 1221-122 N The corresponding third wiring 118 is electrically connected to the corresponding first wiring 1202-120 M, whereby each third routing line 118 can be electrically connected to the corresponding pad 116 through the corresponding first routing line and the second routing line. For example, the second routing line 1221 electrically connects the corresponding third routing line 118 to the first routing line 1202, the second routing line 1222 electrically connects the corresponding third routing line 118 to the first routing line 1203, and so on. Furthermore, the third routing line 118 electrically connected to the first routing line 1201 can be directly connected to the first routing line 1201 without passing through the second routing line. The first routing line 1201 and the connected third routing line 118 can be formed by the same conductive layer, for example, but is not limited thereto. In this case, the first routing lines 1201-120 M The number of second traces 1221-122 may be different N That is, M may be different from N, for example, M is N+1. The configuration of the present invention is not limited thereto. In some embodiments, the first routing line 1201 may also be electrically connected to the third routing line 118 through the second routing line. In this case, M may be the same as N.

[0060] exist Figure 4 In the embodiment shown, when viewed along the top-down direction ND of the touch panel, the first wirings 1201-120 M For example, they may be arranged in sequence along the direction D1, so that the first wirings 1201-120 M The distance from the third wiring 118 can be arranged from near to far, so as to electrically connect the first wirings 1202-120 M The second line 1221-122 N Available in different lengths. Figure 4 As shown, the second trace 1221-122 N For example, they may be arranged in sequence along the direction D2, but are not limited thereto. N With the first trace 1202-120 M In some embodiments, the second wiring 1221-122 N They may also be arranged in sequence along a direction opposite to the direction D2. The direction D1 may be, for example, perpendicular to the direction D2, but is not limited thereto. In some embodiments, the direction D1 may be neither parallel nor perpendicular to the direction D2.

[0061] exist Figure 4 In the embodiment shown, the second traces 1221-122 N One of them can cross the first line 1201-120 M At least one of the first wirings 1201-120 is connected to the first wirings 1201-120 through the insulating layer 108. M Furthermore, the second trace 1221-122 N One of them can cross the first line 1201-120M The other first routing lines 1201-120 between the one electrically connected thereto and the third routing line 118 M For example, the second routing line 1221 crosses the first routing line 1201 between the first routing line 1202 electrically connected to the second routing line 1221 and the third routing line 118, and the second routing line 1222 crosses the first routing line 1201 and the first routing line 1202 between the first routing line 1203 electrically connected to the second routing line 1222 and the third routing line 118, and so on. N will cross the second trace 122 N The first electrically connected trace 120 M The first line 1201 between the third line 118 and the first line 120 M-1 , only with the second trace 122 closest to the pad area PA N The first electrically connected trace 120 M No other second trace 1221-122 N-1 Across. Figure 4 In the embodiment shown, the second traces 1221-122 N Cross the corresponding first trace 1201-120 M The portion is located between the touch area TS and the pad area PA, that is, the cross-line structure 1021 may be located between the touch area TS and the pad area PA, but the present invention is not limited thereto.

[0062] like Figure 4 As shown, the insulating layer 108 may further include a plurality of contact holes 108h1 and a plurality of contact holes 108h2, so that each second wiring 1221-122 N The corresponding contact holes 108h1 can be electrically connected to the corresponding third wirings 118 respectively, and each second wiring 1221-122 N The corresponding first wirings 1202-1203 can be connected to the corresponding first wirings 1202-1204 through the corresponding contact holes 108h2. M In this embodiment, the closer the contact hole 108h2 is to the third wiring 118, the farther the contact hole 108h2 is from the pad area PA, so that the contact hole 108h2 that crosses the first wiring 1202-120 M Multiple second traces 1221-122 of one of the N The contact hole 108h2 corresponding to the first routing line being crossed is located between the contact hole 108h2 and the pad area PA. N The contact holes 108h2 and the contact area PA corresponding to the first wiring 1202 are located between each other, and the contact holes 108h3 and 108h4 are located between each other. NWith the first trace 1202-120 M Make corresponding adjustments to the connection method.

[0063] It should be noted that in this embodiment, since the cross-line structure 1021 located in the routing region TR and the touch sensing element located in the touch region TS are formed by the same first conductive layer 106, second conductive layer 110 and insulating layer 108, the production of the cross-line structure 1021 does not increase the production cost. M Preferably, at least one of the first sensing pad 112a, the second sensing pad 114a and the first bridge line 112b of the touch sensing element is formed by the same second conductive layer 110, and the second traces 1221-122 of the crossover structure 1021 are N The first conductive layer 106 is preferably formed by the same first conductive layer 106 as the second bridge line 114b of the touch sensing element. The present invention is not limited thereto. In other embodiments, the first traces 1201-1202 in the cross-line structure 1021 are preferably formed by the same first conductive layer 106 as the second bridge line 114b of the touch sensing element. M With the second trace 1221-122 N At least one of the two conductive layers 106 and 110 may be formed of a conductive layer different from the first conductive layer 106 and the second conductive layer 110 .

[0064] In addition, if Figure 4 and Figure 5 As shown, the first trace 1201-120 M The width of one of the traces (eg, the width W1 in the direction D1) may be greater than the width of the second traces 1221-122 N The width of one of the lines (e.g., the width W2 in the direction D2). The width W1 may be much larger than the width W2. For example, the ratio of the width W1 to the width W2 may range from 2 to 10, preferably from 3 to 6, but not limited thereto. Therefore, compared to the second lines 1221-122 N For the top surface, the first trace 1201-120 M The upper surface 120S of the first wiring 1201-120 M Set on the second line 1221-122 N The portion of the uneven surface where the wiring encounters a height difference can be effectively reduced between the second wiring 122 and the substrate 104. N With the first line 120 M-2 For example, when the first line 120 M-2 Located on the second line 122 N When the second line 122 N The portion of the surface that encounters the height difference is located at, for example, the region R1.N Located on the first line 120 M-2 When the first line is 120 M-2 The portion of the surface that encounters the height difference is located at, for example, region R2. Since the width of region R1 is smaller than the width of region R2, the line-jumping structure 1021 of this embodiment can reduce the height turning portion of the routing, thereby reducing the electrostatic discharge and / or breakage caused by the turning, thereby improving the product yield. The above-mentioned line-jumping structure 1021 can also be applied to line-jumping structures in other devices.

[0065] Figure 6 The figure shows an enlarged schematic diagram of a crossover structure between the touch area and the pad area according to a variation of the present invention. Figure 6 The pads in the pad area and the touch sensing elements in the touch area are omitted, but the present invention is not limited thereto. Figure 6 As shown, in the cross-line structure 1021a provided in this variation, the first conductive layer 106 may further include a plurality of fourth wirings 124, and the fourth wirings 124 may be arranged between any two adjacent first wirings 1201-120 M and are electrically connected to the corresponding second traces 1221-122 N In this case, Figure 4 Each second trace 1221-122 shown N Can be divided into multiple second lines 1221-122 respectively N , and the second trace 1221-122 N The fourth wiring 124 can be connected to form a plurality of connection lines 126. Figure 6 As shown, for example, the second conductive layer 110 may include two second traces 1221, three second traces 1222, ..., (M-1) second traces 122 N-1 , and M second traces 122 N Furthermore, the second wiring 1221 can be electrically connected to a connection line 126 through a fourth wiring 124, and the second wiring 1222 can be electrically connected to another connection line 126 through two fourth wirings 124, and so on. N The (M-1) fourth wirings 124 can be electrically connected to form another connection line 126. N Except for the second trace 1221-122 corresponding to the contact hole 108h2 N Other second traces 1221-122 N Can cross the corresponding first trace 1202-120 MFor example, one of the second routing lines 1221 may cross the first routing line 1201, two of the second routing lines 1222 may cross the first routing line 1201 and the first routing line 1202, and so on. N The (M-1) lines in the first routing line 1201 and the first routing line 120 M-1 A second line 1221-122 of the present invention N Not limited to Figure 6 In some embodiments, at least one second trace 1221-122 N At least two first traces can be crossed. Figure 6 In a variation of the embodiment, the insulating layer 108 may further include a plurality of contact holes 108h6 so that the second traces 1221-122 N The corresponding fourth trace 124 may be electrically connected via the contact hole 108h6.

[0066] Figure 7 Shown Figure 3 Another enlarged schematic diagram of the cross-line structure in FIG. Figure 7 As shown, the touch area TS may selectively have a notch 128, and the cross-line structure 102 of the touch panel 100 may further include a cross-line structure 1022, which is located in the notch 128. For example, the touch panel 100 may be applied to a handheld electronic device, such as a mobile phone, so that the touch area TS of the touch panel 100 has a notch 128 in order to conform to the display area of ​​the display device having a special shape, but the present invention is not limited to this. In a handheld electronic device, such as a mobile phone, a mobile phone lens, a detector, etc. are usually correspondingly arranged in the notch 128 area. Since the touch area TS has the notch 128, the second sensing string 114 extending at one end to the notch 128 needs to be electrically connected to the corresponding third routing line 118 through the cross-line structure 1022. Specifically, in the cross-line structure 1022, the first conductive layer 106 may further include a plurality of fifth routing lines 1301-130 O , respectively extending along the direction D2, and the fifth wiring 1301-130 O The second conductive layer 110 may further include a plurality of sixth traces 1321-1322. P , respectively extending along the direction D1 and crossing the corresponding fifth traces 1302-130 O , where P can be a positive integer, for example, 2.

[0067] like Figure 7As shown, the cross-line structure 1022 may be similar to the cross-line structure 1021, that is, the fifth routing lines 1301-130 O Can be similar to the first routing 1201-120 M , and the sixth trace 1321-132 P Can be similar to the second routing 1221-122 N , the difference is only in the number. The cross-line structure 1022 of this embodiment is described in detail as follows. When O is different from P, each sixth line 1321-132 P The corresponding third wiring 118 can be electrically connected to the corresponding fifth wirings 1302-130 O In addition, the third line 118 electrically connected to the fifth line 1301 can be directly connected to the fifth line 1301 without passing through the sixth line. In some embodiments, O can be the same as P, and the fifth line 1301 can also be electrically connected to the third line 118 through the sixth line. In addition, the third line 118 can extend along the edge of the touch area TS to another crossover structure (not shown). Figure 7 ) to be electrically connected to the pad, but is not limited thereto.

[0068] exist Figure 7 In the embodiment shown, when viewed along the top-down direction ND of the touch panel 100, due to the fifth wirings 1301-130 O The distance from the third routing line 118 can be arranged from near to far, so the sixth routing lines 1321-132 P The lengths of the sixth traces 1321-132 may be different. P One of them can cross the fifth line 1301-130 O The sixth routing line 1321 crosses the fifth routing line 130 electrically connected to the sixth routing line 1321 and the third routing line 118, and is electrically insulated from the other fifth routing lines by the insulating layer 108. For example, in this embodiment, the sixth routing line 1321 crosses the fifth routing line 130 electrically connected to the sixth routing line 1321. O The fifth line 1301 between the third line 118 and the sixth line 132 P will cross the sixth trace 132 P The fifth wiring 130 of the electrical connection O The fifth routing line 1301 and the fifth routing line 1302 between the third routing line 118 are only connected to the sixth routing line 132 closest to the bottom of the notch 128. P The fifth wiring 130 of the electrical connection O Not the sixth route 1321-132 P Across. Figure 7 In the embodiment shown, the sixth trace 1321-132 PThe portion crossing over the corresponding fifth trace is located in the notch 128 , but the invention is not limited thereto.

[0069] like Figure 7 As shown, the insulating layer 108 may further include a plurality of contact holes 108h3 and a plurality of contact holes 108h4, so that each sixth wiring 1321-122 P The corresponding contact holes 108h3 can be electrically connected to the corresponding third wirings 118 respectively, and each sixth wiring 1321-132 P The corresponding fifth wirings 1302-1304 can be connected to the corresponding fifth wirings 1302-1305 through the corresponding contact holes 108h4. O Electrical connection. Figure 7 In the embodiment of the present invention, when the sensing pad 114a of the second sensing string 114 closest to the notch 128 is formed by the second conductive layer 110, the insulating layer 108 may further include a plurality of contact holes 108h5 so that each of the fifth traces 1301-130 O The corresponding sensing pad 114a may be electrically connected via at least one contact hole 108h5. The contact hole 108h5 may be disposed on the sixth trace 1321-132 P The contact hole 108h5 is located between the first sensing string 112 and the first sensing string 112. When viewed from the top view direction ND, the contact hole 108h5 can be, for example, disposed in the touch sensing area TS adjacent to the bottom of the notch 128 or disposed in the notch 128. In addition, the contact hole 108h4 that is closer to the third wiring 118 is farther from the contact hole 108h5 and crosses the fifth wiring 1301-130 O The sixth line 132 of one of the P It will be located between the contact hole 108h4 and the contact hole 108h5 corresponding to the fifth routing line being crossed.

[0070] In addition, if Figure 7 As shown, the fifth trace 1301-130 O The width of one of the traces (eg, the width W3 in the direction D1) may be greater than the sixth trace 1321-132 P The width of one of the lines (e.g., the width W4 in the direction D2). The width W3 may be much larger than the width W4. For example, the ratio of the width W3 to the width W4 may range from 2 to 10, preferably from 3 to 6, but not limited thereto. P For the top surface, the fifth trace 1301-130 O The upper surface of the fifth wiring 1301-130 O Set at the sixth route 1321-132 P The gap between the substrate 104 can effectively reduce the uneven surface where the wiring encounters a height difference, such as Figure 5 The second trace 122 N-2 -122 N As shown in the first line 1202. Therefore, the line jumper structure 1022 of this embodiment can also reduce the high and low turning parts of the line, thereby reducing the electrostatic discharge and / or breakage caused by the turning, thereby improving the product yield. The above-mentioned line jumper structure 1022 can also be applied to the line jumper structure in other devices.

[0071] It should be noted that, in this embodiment, since the cross-line structure 1022 in the routing region TR and the touch sensing element in the touch region TS are formed by the same first conductive layer 106, second conductive layer 110 and insulating layer 108, the production of the cross-line structure 1022 does not increase the production cost. The present invention is not limited to this. In other embodiments, the fifth routing lines 1301-1302 in the cross-line structure 1022 may be formed by the same first conductive layer 106, second conductive layer 110 and insulating layer 108 as the touch sensing element in the touch region TS. O With the sixth line 1321-132 P At least one of the two conductive layers 106 and 110 may be formed of a conductive layer different from the first conductive layer 106 and the second conductive layer 110 .

[0072] In some embodiments, Figure 7 The cross-line structure 1022 shown can also be used Figure 6 The cross-line structure shown in the figure is to connect two adjacent fifth traces 1301-130 O The fourth routing line 124 is set between each sixth routing line 1321-132 P Can be divided into multiple sixth lines 1321-132 P , and the sixth trace 1321-132 P A plurality of connection lines may be electrically connected through the fourth wiring 124 .

[0073] In some embodiments, the touch panel 100 may selectively have the cross-line structure 1021 and / or the cross-line structure 1022. When the touch panel 100 only has the cross-line structure 1022 located in the notch 128, the fifth routing line may be the first routing line in the claims, and the sixth routing line may be the second routing line in the claims, and the present invention is not limited thereto.

[0074] In summary, in the touch panel of the present invention, by setting the first routing line with a larger width between the substrate and the second routing line with a smaller width, the portion of the routing line encountering an uneven surface with a height difference can be effectively reduced, thereby reducing the height turning portion of the routing line, thereby reducing electrostatic discharge and / or breakage caused by the turning, thereby improving product yield.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A touch panel, characterized in that: The touch panel has a touch area, and the touch panel includes: a substrate; A first conductive layer is disposed on the substrate, and the first conductive layer includes a first trace extending along a first direction; an insulating layer, disposed on the first conductive layer; and a second conductive layer disposed on the insulating layer, wherein the second conductive layer comprises a plurality of second traces extending along a second direction respectively, wherein the plurality of second traces cross the first trace and are insulated from the first trace, and a width of the first trace in the second direction is greater than a width of one of the plurality of second traces in the first direction; The touch panel has a pad area, and the portions of the multiple second lines crossing over the first lines are located between the touch area and the pad area, or the touch area has a recess, and the portions of the multiple second lines crossing over the first lines are located in the recess.

2. The touch panel according to claim 1, wherein: The first conductive layer includes an opaque conductive material, and the second conductive layer includes a transparent conductive material.

3. The touch panel according to claim 1, wherein: A pad is also included, which is disposed in the pad area, and the first trace is electrically connected to the pad.

4. The touch panel according to claim 1, wherein: It also includes another second wiring electrically connected to the first wiring.

5. The touch panel according to claim 4, wherein: The insulating layer has a contact hole, the other second wiring is electrically connected to the first wiring through the contact hole, and the plurality of second wirings are located between the contact hole and the pad area.

6. The touch panel according to claim 1, wherein: The first conductive layer and the second conductive layer include a plurality of first sensing strings extending along a first direction and a plurality of second sensing strings extending along a second direction, and the insulating layer electrically insulates the plurality of first sensing strings from the plurality of second sensing strings.

7. The touch panel according to claim 6, wherein: The first conductive layer includes a plurality of third routing lines, and one of the plurality of third routing lines electrically connects a corresponding one of the plurality of first sensing strings and a corresponding one of the plurality of second sensing strings to a corresponding one of the second routing lines.

8. The touch panel according to claim 1, wherein: The first conductive layer and the second conductive layer include a plurality of first sensing strings extending along a first direction and a plurality of second sensing strings extending along a second direction, wherein the first trace is electrically connected to one of the plurality of second sensing strings.

9. The touch panel according to claim 8, wherein: The insulating layer has at least one contact hole, the first wiring is electrically connected to the plurality of second sensing strings through the at least one contact hole, and the at least one contact hole is disposed between the plurality of second wirings and the plurality of first sensing strings.

10. The touch panel according to claim 1, wherein: The first conductive layer further includes a plurality of third routing lines, and one of the plurality of second routing lines is electrically connected to a corresponding one of the plurality of third routing lines.

11. The touch panel according to claim 1, wherein: It also includes another second wiring electrically connected to the first wiring.

12. The touch panel according to claim 1, wherein: The first conductive layer includes another first routing line, and the plurality of second routing lines cross the first routing line and the another first routing line.

13. The touch panel according to claim 1, wherein: The first conductive layer includes another first routing line and a plurality of fourth routing lines, and the plurality of fourth routing lines are disposed between the first routing line and the another first routing line, and are respectively electrically connected to a corresponding one of the plurality of second routing lines.

14. The touch panel according to claim 1, wherein: The ratio of the width of the first routing line to the width of one of the plurality of second routing lines is in a range of 2 to 10.

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