TW201837670A - Touch display - Google Patents

Abstract

A touch display includes a display, and a touch panel. The touch panel includes a flexible substrate and an electrode module disposed on the flexible substrate. The electrode module includes a touch-sensing electrode, a first bonding pad electrically connected with the touch-sensing electrode, and a second bonding pad electrically connected with the touch-sensing electrode. At least one side of the flexible substrate is bent to surround a corresponding side of the display, so that the first bonding pad and the second bonding pad are respectively located above the display surface of the display and located under the back surface of the display.

Description

   Touch display   

The invention relates to a touch display.

In the structure of the existing touch screen, the wiring of the conductive film layer used to sense the user touching the screen is formed as leads from the left and right edges of the screen, and then concentrated in the soldering area to connect with the flexible circuit board. The routing area on the left and right sides of the screen becomes an invalid touch area, and the routing area is usually covered by an ink layer. The presence of the ink layer causes the display range of the mobile phone screen to be reduced. Therefore, the visual experience and touch Functionally, it has caused some impact on users.

In the technology for solving the above ink layer, a flexible touch-sensitive conductive thin film layer is being developed. However, the current technology still uses a structure that concentrates the traces in a single welding area. The problem with this approach is that the traces must have two or more turning structures, and the turning structure will cause certain risks in the process. , Such as broken wires; in other words, the more turning structures, the lower the reliability of the product. In addition, the above method will also cause some of the traces to extend from the front to the back of the display, and then extend back to the front to concentrate on the soldering area. Such a long distance of traces will also lead to signal attenuation and different lengths. Problems such as uneven impedance in the traces.

In some embodiments of the present invention, by bending a specific connection electrode back to the back of the display, the leads can have a minimum number of turning structures, thereby bringing better product reliability; further, a part of the present invention In the embodiment, the lead can be folded toward the back of the display and blocked by the display to achieve a frameless display effect, so a touchless display different from the conventional frameless is produced.

According to some embodiments of the present invention, a touch display includes a display and a touch panel. The touch panel has a flexible substrate and an electrode module disposed on the flexible substrate; wherein the electrode module has a touch electrode and a first connection electrode electrically connected to the touch electrode. And a second connection electrode electrically connected to the touch electrode, at least one side of the flexible substrate is bent along the display, and the first connection electrode and the second connection electrode are respectively disposed on the display of the display And the back of the display.

In some embodiments of the present invention, the flexible substrate includes: a first region disposed on the display surface, a second region disposed on the back surface, and a bend between the first region and the second region. A folded region, wherein the touch electrode and the first connection electrode are disposed in the first region, and the second connection electrode is disposed in the second region.

In some embodiments of the present invention, the electrode module further includes a first lead electrically connected to the touch electrode and the first connection electrode, and a second lead electrically connected to the touch electrode and the second connection electrode. lead.

In some embodiments of the present invention, the second lead is disposed in the bending region and the second region.

In some embodiments of the present invention, the second lead has a first lead segment provided in the bent region and a second lead segment provided in the second region, and the first lead segment and the second lead segment Made of different materials.

In some embodiments of the present invention, the first lead segment is made of a nano metal wire, and the second lead segment is made of a metal material.

According to some embodiments of the present invention, the second lead has only one turning structure, and the turning structure is located in the second region.

In some embodiments of the present invention, the display has a plurality of sides, and the first connection electrode and the second connection electrode are located on one of the sides.

In some embodiments of the present invention, the flexible substrate has a first surface and a second surface opposite to the first surface, wherein the second surface is attached to the display, and the touch electrode includes a set A first axial touch electrode on the first surface and a second axial touch electrode disposed on the second surface, the first axial touch electrode is electrically connected to the first connection electrode, and the second The axial touch electrode is electrically connected to the second connection electrode, the first connection electrode is exposed on the flexible substrate, and the second connection electrode is located between the display and the flexible substrate.

In some embodiments of the present invention, the flexible substrate has a first surface and a second surface opposite to the first surface, wherein the second surface is attached to the display, and the touch electrode includes a set A first axial touch electrode on the first surface and a second axial touch electrode disposed on the first surface, the first axial touch electrode is electrically connected to the first connection electrode, and the second The axial touch electrode is electrically connected to the second connection electrode, and the first connection electrode and the second connection electrode are both exposed on the flexible substrate.

In some embodiments of the present invention, the flexible substrate is adhered and formed by a first substrate and a second substrate, wherein the first substrate has a first surface and a second surface opposite to the first surface, The second substrate has a third surface and a fourth surface opposite to the third surface. The second surface is attached to the third surface. The fourth surface is attached to the display. The touch electrode includes A first axial touch electrode disposed on the first surface and a second axial touch electrode disposed on the third surface, the first axial touch electrode is electrically connected to the first connection electrode, and The second axial touch electrode is electrically connected to the second connection electrode, the first connection electrode is exposed on the first substrate, and the second connection electrode is located between the first substrate and the second substrate.

In some embodiments of the present invention, the touch-sensitive touch display further includes a third connection electrode electrically connected to the touch electrode, wherein the third connection electrode is disposed on the back surface.

10‧‧‧Touch Panel

11‧‧‧ Flexible substrate

110‧‧‧first surface

111‧‧‧ second surface

11A‧‧‧First Zone

11B‧‧‧Second Zone

11C‧‧‧Bend area

12‧‧‧ electrode module

120‧‧‧Touch electrode

120Y‧‧‧First axis touch electrode

120X‧‧‧Second axis touch electrode

121‧‧‧First Lead

122‧‧‧first connection electrode

123‧‧‧Second Lead

124‧‧‧First lead segment

125‧‧‧Second Lead Segment

126‧‧‧Turning structure

20‧‧‧ Display

201‧‧‧display surface

202‧‧‧Back

30, 30A, 30B‧‧‧Adhesive layer

11’‧‧‧first substrate

11 ”‧‧‧second substrate

127‧‧‧Second connection electrode

128‧‧‧ Third Lead

129‧‧‧third connection electrode

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

FIG. 2A is a schematic top view of a touch display according to a first embodiment of the present invention.

FIG. 2B is a schematic rear view of a touch display according to the first embodiment of the present invention.

Figure 2C is a schematic cross-sectional view taken along line 2C-2C of Figure 2A.

Figure 2D is a schematic cross-sectional view taken along line 2D-2D of Figure 2A.

FIG. 3 is a schematic top view of a touch panel according to a second embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of a touch display according to a second embodiment of the present invention.

FIG. 5 is a schematic cross-sectional view of a touch display according to a third embodiment of the present invention.

Several embodiments of the present invention will be disclosed in the following drawings. For the sake of clear description, many practical details will be described in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and elements will be shown in the drawings in a simple and schematic manner.

Regarding "about", "approximately" or "approximately" as used herein, the error or range of the index value is generally within 20%, preferably within 10%, and more preferably within Within five percent. Unless explicitly stated in the text, the mentioned values are regarded as approximate values, that is, they have errors or ranges as indicated by "about", "approximately" or "approximately". In addition, the relative positional relations such as "above", "below", "left" or "right" used in this article are mainly based on the diagrams in this article, and are only used to The description is not intended to limit the invention.

FIG. 1 is a schematic top view of a touch panel 10 according to some embodiments of the present invention. The touch panel 10 includes a flexible substrate 11 and an electrode module 12 disposed on the flexible substrate 11. Please first cooperate with FIG. 2C, which shows a schematic cross-sectional view of a touch display after the touch panel 10 and the display 20 of the first embodiment of the present invention are assembled. The touch panel 10 of some embodiments of the present invention is provided on the display 20 Above, and by virtue of the flexibility of the touch panel 10, a part of the electrode module 12 is flexed and folded back and disposed on the back surface 202 of the display 20, so that a part of the electrode module 12 can be directly received by the display 20 Blocking without the need to use an additional light-shielding layer, such as black ink (BM), thus achieving a borderless touch display visually.

In more detail, in the touch panel 10 according to some embodiments of the present invention, the electrode module 12 includes a touch electrode 120, a first connection electrode 122 electrically connected to the touch electrode 120, and an electrical connection to the touch electrode. The second connection electrode 127 of 120 and the third connection electrode 129 electrically connected to the touch electrode 120, and the second connection electrode 127 and the third connection electrode 129 use the flexible characteristics of the touch panel 10 to The left and right sides of the control panel 10 are folded back along the display 20 (please cooperate with FIG. 2D), so that the second connection electrode 127 and the third connection electrode 129 are disposed on the back 202 of the display 20; in contrast, the first connection electrode 122 is It is disposed on the front surface of the display 20, that is, the display surface 201 for displaying a screen. In order to prevent the first connection electrode 122 from being seen by the user, in general, other components such as physical buttons, trademark patterns, etc. are used to cover the first connection electrode 122, but this is not the main content of the present invention, so it will not be described here. .

It is worth noting that due to the variability of the product, in the actual production process, the size of the touch panel 10 and the display 20 are not exactly the same, so the "second connection electrode 127 and the third connection electrode 129 defined herein are provided on the display The back surface 202 of 20 is not a limitation that the second connection electrode 127 and the third connection electrode 129 need to be completely located on the back surface 202 of the display 20, as long as the positions of the second connection electrode 127 and the third connection electrode 129 are on the display for the user Behind or below 20 is the scope of protection of the present invention.

In some embodiments of the present invention, the material of the flexible substrate 11 may be a bend-resistant transparent substrate, such as, but not limited to, polyethylene terephthalate (PET), polyethylene terephthalate, and polyethylene terephthalate. Polyimide (PI), polyethylene naphthalate (PEN), cyclic olefin copolymer (COC), cyclic olefin polymer (COP), etc .; and the thickness of the flexible substrate 11 is preferably less than or equal to ( ) 50um. In addition, the electrode module 12 also has flexibility, such as a transparent electrode made of nanometer metal wires. Specifically, the electrode module 12 (such as the touch electrode 120 and the connection electrode 122) of some embodiments of the present invention. , 127, 129) are made of silver nanowires or copper nanowires; and in some embodiments, the first, second, and third connection electrodes 122, 127, and 129 are based on In the embodiment of the invention, the signal transmission path between the touch display and the external controller, the first, second, and third connection electrodes 122, 127, and 129 are preferably silver bonding pads, which can be connected with Circuit boards, such as, but not limited to, flexible circuit boards (FPC) are soldered to transmit signals.

In detail, the flexible substrate 11 can be roughly divided into three regions: a first region 11A, a second region 11B, and a bent region 11C located between the first region 11A and the second region 11B. In some embodiments of the present invention, the first area 11A is a touch function area. Therefore, the touch electrode 120 is substantially disposed in the first area 11A; and as shown in FIG. 2A, when part of the embodiments of the present invention After the touch panel 10 and the display 20 are assembled, the first area 11A corresponds to the display surface 201 of the display 20, so that the user can click / operate the screen appearing on the display surface 201 through the touch electrodes 120. The bending region 11C is defined on one side (as shown in FIG. 3) or on both sides (as shown in FIG. 1) of the first region 11A, and the bending region 11C is used to realize bending and folding of the flexible substrate 11; The second region 11B is connected to the bent region 11C, and the second connection electrode 127 and the third connection electrode 129 are disposed in the second region 11B. In contrast, the first connection electrode 122 is disposed in the first region 11A. Therefore, after the touch panel 10 and the display 20 of some embodiments of the present invention are assembled, for example, the two are bonded using the adhesive layer 30, the first connection electrode 122 will be located on the display surface 201 of the display 20 (such as the first 2A and 2D), the second connection electrode 127 and the third connection electrode 129 are folded back on the back surface 202 of the display 20 together with the second region 11B (such as FIG. 2B and FIG. 2D).

In some embodiments of the present invention, the touch electrode 120 includes a first axial touch electrode 120Y and a second axial touch electrode 120X made of nanometer metal wires. For example, the first axial touch electrode 120Y is an electrode structure extended along the Y direction, and the second axial touch electrode 120X is an electrode structure extended along the X direction, and the first axial touch The electrode 120Y and the second axial touch electrode 120X are respectively formed on different surfaces of the flexible substrate 11. In other words, the touch panel 10 in some embodiments of the present invention is a single-layer double-sided F2 structure touch sensor. Tester. In some embodiments of the present invention, the electrode module 12 further includes a first lead 121 electrically connecting the touch electrode 120 and the first connection electrode 122, and a second wire electrically connecting the touch electrode 120 and the second connection electrode 127. The lead 123 and the third lead 128 electrically connecting the touch electrode 120 and the third connection electrode 129. The touch electrode 120, the first lead 121, the second lead 123, and the third lead 128 are all made of nanometer metal wires. A flexible transparent electrode; specifically, the first axial touch electrode 120Y is electrically connected to the first connection electrode 122 through the first lead 121; several upper half of the touch electrode 120 (such as the first Three of them shown in FIG. 1) The second axial touch electrode 120X is electrically connected to the second connection electrode 127 through the second lead wire 123; several of the lower half of the touch electrode 120 (as shown in FIG. 1) (2) The second axial touch electrode 120X is electrically connected to the third connection electrode 129 through the third lead 128.

Specifically, the second lead 123 is disposed at the bent region 11C and the second region 11B on the left side of the first region 11A. One end of the second lead 123 is connected to the second axial touch electrode 120X, and the other end is connected to the first axial touch electrode 120X. Two connecting electrodes 127; the third lead 128 is disposed at the bent area 11C and the second area 11B on the right side of the first area 11A, one end of the third lead 128 is connected to the second axial touch electrode 120X, and the other end is connected to Third connection electrode 129. In this way, when the touch panel 10 and the display 20 of some embodiments of the present invention are assembled, the bent areas 11C on the left and right sides of the first area 11A are bent along the display 20 and are located on the side of the display 20, The second region 11B on the left and right sides of the first region 11A is folded toward the back 202 of the display 20, so that the second connection electrode 127 and the third connection electrode 129 are folded back to the back 202 of the display 20 together with the second region 11B. (Such as Figure 2B or 2D). Therefore, after the bending, the user can see the screen of the display surface 201 of the display 20 through the first region 11A and a part of the bent region 11C, and since the first lead 121, the second lead 123, and the third lead 128 Because of its transparent characteristics, it is not necessary to use a frame or reduce the use of a frame, thereby achieving the effect that the user will not be obstructed by the traditional frame (such as a light-shielding layer of black ink). Preferably, the thickness of the display 20 may be between 30um-300um, the thickness of the adhesive layer 30 bonded between the touch panel 10 and the display surface 201 of the display 20 may be between 25um-150um, and the touch panel 10 and the display may be The thickness of the adhesive layer 30 attached to the back surface 202 of 20 can be between 10um-50um; and the bending radius of the bending area 11C can be less than or equal to ( ) 0.5mm; the line width / space between the first, second and third leads 121, 123, 128 can be 10 / 10um, 15 / 15um, 30 / 30um, etc.

In the embodiment of the present invention, the second connection electrode 127 and the third connection electrode 129 are disposed on the back surface 202 of the display 20, and the second lead wire 123 and the third lead wire 128 each require only a minimum (for example, one) turning structure 126. Can achieve the electrical connection between the second axial touch electrode 120X and the second and third connection electrodes 127, 129; and fewer turning structures 126 can bring better reliability to the product, such as the lead in the manufacturing process It is not easy to break in the middle, the size uniformity of the leads is better, and the impedance difference between the leads is smaller. Preferably, the transition structure 126 is located in the second region 11B, so that most of the second lead 123 and the third lead 128 are located in the second region 11B, so that the second lead 123 and the third lead 128 can use a shorter path and The connection of the second and third connection electrodes 127 and 129 can also achieve the effect that most of the second and third leads 123 and 128 are folded toward the back surface 202 of the display 20 and blocked by the display 20.

In some embodiments of the present invention, the first, second, and third connection electrodes 122, 127, and 129 are preferably located on one of a plurality of sides of the display 20 (or an assembled touch display). For example, the lower side, as shown in FIG. 2A and FIG. 2B, thereby making it easier for the first, second, and third connection electrodes 122, 127, and 129 to connect the flexible circuit board, and the implementation of the present invention For example, it can be said that the display 20 (or the assembled touch display) has a plurality of connection areas (ie, bonding areas) on the lower side, and these connection areas are distributed on different sides of the display 20 (the aforementioned display surface). 201 and back 202).

In some embodiments of the present invention, the material of the second lead 123 and the third lead 128 can be adjusted to improve the overall conductivity of the lead. For the convenience of explanation, only the second lead 123 is described below. In some embodiments, a part of the second lead 123 is made of a flexible electrode, and the other part is made of high conductivity, but not flexible. It is made of a material with poor flexibility or flexibility. In other words, the second lead 123 of a composite type is made of different materials, thereby taking into consideration both the flexible characteristics and the conductive characteristics of the second lead 123. For example, the second lead 123 in some embodiments of the present invention may have a first lead segment 124 provided in the bending region 11C and a second lead segment 125 provided in the second region 11B. The first lead segment 124 is preferably flexible. Therefore, the first lead segment 124 may be a transparent electrode made of nanometer metal wires. For example, the first lead segment 124 of some embodiments of the present invention is nanosilver. Wire or nano-copper wire, that is, the first lead segment 124 and the touch electrode 120 can both be made of nano-silver wire or nano-copper wire; and because the second lead segment 125 is part of the present invention After the touch panel 10 and the display 20 of the embodiment are assembled, they will be folded back to the back 202 of the display 20, so the second lead segment 125 need not consider its transparency (in other words, the second lead segment 125 may be made of an opaque material). Production), and the second lead segment 125 does not need to consider its flexibility due to its location (in other words, the second lead segment 125 can be made of a material that does not have flexibility). Based on the above considerations, the second lead segment 125 It may be made of a highly conductive metal material. For example, the second lead segment 125 and the second connection electrode 127 may be made of the same metal material, such as silver or copper. Specifically, the second lead segment 125 The line width / space can be 10 / 10um, 15 / 15um, 30 / 30um and so on. Preferably, in order to make the first lead segment 124 and the second lead segment 125 have a good contact, an overlap structure may be formed therebetween. For example, the second lead segment 125 is overlapped and formed on the first lead segment 124. On the surface.

So far, by selecting the second lead segment 125 made of a metal material with higher conductivity, the second lead segment 123 as a whole can have higher conductivity, and the second lead segment of the metal material with poor transparency and flexibility. 125 can avoid the bending area 11C and be folded back to the back 202 of the display 20 (as shown in FIG. 2C), thereby avoiding the poor transparency of the second lead segment 125 of the metal material to affect the touch display in the embodiment of the present invention. product quality. On the other hand, the third lead 128 also has a first lead segment 124 and a second lead segment 125, and their implementation content is the same as that of the second lead 123, which will not be repeated here.

Please refer to FIG. 3, which shows another example of some embodiments of the present invention. The difference from FIG. 1 is that the electrode module 12 includes a touch electrode 120 (including The first axial touch electrode 120Y and the second axial touch electrode 120X), the first axial touch electrode 120Y electrically connected to the touch electrode 120 and the first lead 121 and the electrical connection of the first connection electrode 122 The second axial touch electrode 120X of the contact control electrode 120 and the second lead 123 of the second connection electrode 127, and all the second axial touch electrodes 120X are formed by the second lead 123 and the second connection electrode 127 Electrical connection; the first lead 121 and the second lead 123 may be made of nanometer metal wires and have flexible transparent electrodes, or the aforementioned composite electrodes made of metal and nanometer metal wires overlapped. That is, only the left side of the first region 11A is provided with the second region 11B and the bent region 11C.

It is worth noting that according to FIG. 1 and FIG. 3, it can be seen that the touch panel 10 according to the embodiment of the present invention places specific connection electrodes on the side of the touch panel 10 that is not bent and the second region 11B. Staggered position. For example, as shown in FIG. 3, the position of the second connection electrode 127 is at the staggered position of the lower side of the touch panel 10 without being bent and the second region 11B. In some embodiments of the present invention, after the touch panel 10 is bent and assembled on the display 20 through the above-mentioned position arrangement, the second connection electrode 127 may be disposed on the back 202 of the display 20 as described above. .

In some embodiments of the present invention, the touch panel 10 may have a variety of different laminated structures. For example, as mentioned above, in the embodiment shown in FIG. 1, the touch panel 10 is a single-layer double-sided F2 structure touch sensor. In detail, in the embodiments shown in FIGS. 1, 2C, and 2D, the first axial touch electrode 120Y is disposed on the first surface 110 (such as the upper surface) of the flexible substrate 11 and is connected to On the first connection electrode 122; the second axial touch electrode 120X is disposed on the second surface 111 (as shown below) of the flexible substrate 11 and is connected to the second connection electrode 127; therefore, as shown in FIG. 2D In the structure, the first connection electrode 122 is exposed on the flexible substrate 11, and the second connection electrode 127 and / or the third connection electrode 129 are located between the display 20 and the flexible substrate 11. In addition, the gap between the second connection electrode 127 and / or the third connection electrode 129 and the display 20 is preferably filled by the adhesive layer 30.

In the embodiment shown in FIG. 4, the touch panel 10 is a single-layer single-sided structure touch sensor. In detail, the first axial touch electrode 120Y and the second axial touch electrode 120X are both disposed on the first surface 110 (such as the upper surface) of the flexible substrate 11 and the second surface of the flexible substrate 11 111 (the following surface) is attached to the display 20, for example, the second surface 111 and the display 20 are filled with the adhesive layer 30; therefore, in the structure shown in FIG. 4, it is connected to the first axial touch The first connection electrode 122 of the electrode 120Y and the second connection electrode 127 and / or the third connection electrode 129 connected to the second axial touch electrode 120X are exposed on the flexible substrate 11.

In the embodiment shown in FIG. 5, the touch panel 10 is a touch sensor using a single-layer and single-sided FF structure with two substrates. In detail, the flexible substrate 11 is adhered and formed by the first substrate 11 ′ and the second substrate 11 ″, for example, the second surface (such as the following surface) of the first substrate 11 ′ and the second substrate are filled with the adhesive layer 30. 11 "third surface (such as the upper surface); and the first axial touch electrode 120Y is disposed on the first surface (such as the upper surface) of the first substrate 11 ', and the second axial touch electrode 120X is disposed on the second substrate The third surface (such as the upper surface) of 11 "; the fourth surface (the following surface) of the second substrate 11" is attached to the display 20, for example, the fourth surface of the second substrate 11 "is filled with the adhesive layer 30B and the display 20; therefore, in the structure shown in FIG. 5, the first connection electrode 122 is exposed on the first substrate 11 ′, and the second connection electrode 127 and / or the third connection electrode 129 are located on the first substrate 11. 'And the second substrate 11 ". In addition, the gap between the second connection electrode 127 and / or the third connection electrode 129 and the first substrate 11 'is preferably filled with the adhesive layer 30A.

In some embodiments of the present invention, by bending specific connection electrodes (such as the aforementioned second and third connection electrodes) to the back of the display, the leads can have a minimum number of turning structures, which brings better results. Product reliability; furthermore, in some embodiments of the present invention, the flexibility of the leads (such as the aforementioned second and third leads) can be folded toward the back of the display to be blocked by the display, and matched with the lead itself Transparency to achieve a borderless display effect.

Although the present invention has been disclosed in various embodiments as above, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the present invention. The scope of protection shall be determined by the scope of the attached patent application.

Claims (13)

    A touch display includes: a display having a display surface and a back surface opposite to the display surface; and a touch panel provided on the display, the touch panel having a flexible substrate and a An electrode module disposed on the flexible substrate; wherein the electrode module has a touch electrode, a first connection electrode electrically connected to the touch electrode, and a first electrode electrically connected to the touch electrode. Two connection electrodes, at least one side of the flexible substrate is bent along the display, and the first connection electrode and the second connection electrode are respectively disposed on the display surface and the back surface.         The touch display according to claim 1, wherein the flexible substrate includes: a first region disposed on the display surface, a second region disposed on the back surface, and a first region disposed on the first region and the first region. In a bent region between two regions, the touch electrode and the first connection electrode are disposed in the first region, and the second connection electrode is disposed in the second region.         The touch display according to claim 2, wherein a bending radius of the bending region is 0.5 mm or less.         The touch display according to claim 2, wherein the electrode module further includes a first lead electrically connecting the touch electrode and the first connection electrode and an electrical connection between the touch electrode and the second connection The second lead of the electrode.         The touch display according to claim 4, wherein the second lead has only a turning structure, and the turning structure is located in the second region.         The touch display according to claim 4, wherein the second lead is disposed in the bending region and the second region.         The touch display according to claim 6, wherein the second lead has a first lead segment provided in the bent region and a second lead segment provided in the second region, and the first lead segment and the The second lead segment is made of different materials.         The touch display according to claim 7, wherein the first lead segment is made of a nano metal wire, and the second lead segment is made of a metal material.         The touch display according to claim 1, wherein the display has a plurality of sides, and the first connection electrode and the second connection electrode are located on one of the sides.         The touch display according to claim 1, wherein the flexible substrate has a first surface and a second surface opposite to the first surface, wherein the second surface is attached to the display, and the touch The electrode includes a first axial touch electrode disposed on the first surface and a second axial touch electrode disposed on the second surface. The first axial touch electrode is electrically connected to the first connection electrode. The second axial touch electrode is electrically connected to the second connection electrode, the first connection electrode is exposed on the flexible substrate, and the second connection electrode is located between the display and the flexible substrate.         The touch display according to claim 1, wherein the flexible substrate has a first surface and a second surface opposite to the first surface, wherein the second surface is attached to the display, and the touch The electrode includes a first axial touch electrode disposed on the first surface and a second axial touch electrode disposed on the first surface. The first axial touch electrode is electrically connected to the first connection electrode. The second axial touch electrode is electrically connected to the second connection electrode, and the first connection electrode and the second connection electrode are both exposed on the flexible substrate.         The touch display according to claim 1, wherein the flexible substrate is adhered and formed by a first substrate and a second substrate, wherein the first substrate has a first surface and a first surface opposite to the first surface. A second surface, the second substrate has a third surface and a fourth surface opposite to the third surface, the second surface is attached to the third surface, and the fourth surface is attached to the display; The touch electrode includes a first axial touch electrode disposed on the first surface and a second axial touch electrode disposed on the third surface. The first axial touch electrode is electrically connected to the first A connection electrode, the second axial touch electrode is electrically connected to the second connection electrode, the first connection electrode is exposed on the first substrate, and the second connection electrode is located between the first substrate and the second substrate.         The touch display according to claim 1, further comprising a third connection electrode electrically connected to the touch electrode, wherein the third connection electrode is disposed on the back surface.