Touch panel and display module and preparation method thereof

Abstract

The application provides a touch panel and a display module and a preparation method thereof. The touch panel comprises a central region and an edge region surrounding the central region at least partially, and the touch panel comprises: a substrate; a first conductive layer located on one side of the substrate; an insulating layer located on a side of the first conductive layer away from the substrate; and a second conductive layer located on a side of the insulating layer away from the substrate, wherein a normal projection of at least part of the second conductive layer on the substrate overlaps a normal projection of the first conductive layer on the substrate. In the edge region, a distance from an end of the first conductive layer away from the central region to the central region is greater than or equal to a distance from an end of the second conductive layer away from the central region to the central region. The second conductive layer does not form a film on the boundary of the first conductive layer. In the FIAA technology, the tensile strength of the insulating layer is improved at the bending starting position, the insulating layer is almost not broken, and then the second conductive layer is not broken, thereby improving the yield of the touch panel.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to touch panels and display modules and their manufacturing methods. Background Technology

[0002] With the continuous development of display technology, display products are increasingly moving towards narrower bezels. To better achieve narrower bezels, related technologies employ a technique of placing some fanout lines within the display area (fanoutin AA, abbreviated as FIAA). As the bezel narrows, the bending radius also decreases, placing increasingly higher demands on the tensile strength of the film structure in the bending area. Limited by current technologies, current display modules still cannot adequately meet these requirements. Summary of the Invention

[0003] In view of this, embodiments of this application provide a touch panel and a display module, and a method for manufacturing the same.

[0004] A first aspect of this application provides a touch panel, the touch panel including a central region and an edge region at least partially surrounding the central region, the touch panel including:

[0005] substrate;

[0006] The first conductive layer is located on one side of the substrate;

[0007] An insulating layer is located on the side of the first conductive layer away from the substrate;

[0008] The second conductive layer is located on the side of the insulating layer away from the substrate, and at least part of the orthographic projection of the second conductive layer on the substrate overlaps with the orthographic projection of the first conductive layer on the substrate.

[0009] In the edge region, the distance from the end of the first conductive layer away from the central region to the central region is greater than or equal to the distance from the end of the second conductive layer away from the central region to the central region.

[0010] In one embodiment, the first conductive layer includes a bridging portion, and the second conductive layer includes a first touch electrode and a second touch electrode, the bridging portion being electrically connected to either the first or second touch electrode; or...

[0011] The first conductive layer includes a first touch electrode, and the second conductive layer includes a second touch electrode.

[0012] A second aspect of this application provides a display module, the display module including a display area and a non-display area at least partially surrounding the display area, the display module comprising:

[0013] The display panel and touch panel are stacked together;

[0014] The touch panel includes a first conductive layer, an insulating layer, and a second conductive layer stacked sequentially. The first conductive layer is located on the side of the second conductive layer closer to the display panel, and at least a portion of the orthographic projection of the second conductive layer on the display panel overlaps with the orthographic projection of the first conductive layer on the display panel.

[0015] In the non-display area, the distance from the end of the first conductive layer away from the display area to the display area is greater than or equal to the distance from the end of the second conductive layer away from the display area to the display area.

[0016] In one embodiment, the first conductive layer includes a bridging portion, and the second conductive layer includes a first touch electrode and a second touch electrode, the bridging portion being electrically connected to either the first or second touch electrode; or...

[0017] The first conductive layer includes a first touch electrode, and the second conductive layer includes a second touch electrode.

[0018] In one embodiment, the display panel includes:

[0019] Substrate;

[0020] The third conductive layer is located on the side of the substrate closer to the touch panel. The orthographic projection of the first conductive layer on the substrate overlaps with the orthographic projection of the third conductive layer on the substrate.

[0021] The first conductive layer is electrically connected to the third conductive layer.

[0022] In one embodiment, the display panel further includes: a first planarization layer, the first planarization layer being located on the side of the third conductive layer near the touch panel, the first planarization layer having through holes, and the first conductive layer being electrically connected to the third conductive layer through the through holes;

[0023] Preferably, the third conductive layer includes a first conductive sublayer, a second conductive sublayer, and a third conductive sublayer stacked together, wherein the first conductive sublayer is located on the side of the second conductive sublayer facing away from the touch panel;

[0024] Preferably, the material of the first conductive electronic layer includes titanium; and / or, the material of the second conductive electronic layer includes aluminum; and / or, the material of the third conductive electronic layer includes titanium.

[0025] In one embodiment, the display panel further includes: a fourth conductive layer located on the side of the substrate close to the third conductive layer, wherein the orthographic projection of the fourth conductive layer on the substrate overlaps with the orthographic projection of the third conductive layer on the substrate, and the fourth conductive layer is electrically connected to the third conductive layer.

[0026] In one embodiment, the display panel further includes: a second planarization layer located on the side of the fourth conductive layer close to the third conductive layer, the second planarization layer having a through hole, and the third conductive layer being electrically connected to the fourth conductive layer through the through hole;

[0027] Preferably, the fourth conductive layer includes a fourth conductive sublayer, a fifth conductive sublayer, and a sixth conductive sublayer stacked together, with the fourth conductive sublayer located on the side of the fifth conductive sublayer facing away from the touch panel;

[0028] Preferably, the material of the fourth conductive electronic layer includes titanium; and / or, the material of the fifth conductive electronic layer includes aluminum; and / or, the material of the sixth conductive electronic layer includes titanium.

[0029] A third aspect of this application provides a method for manufacturing a touch panel, the touch panel including a central region and an edge region surrounding the central region, the manufacturing method comprising:

[0030] Provide a substrate;

[0031] A first conductive layer is prepared on one side of the substrate;

[0032] An insulating layer is prepared on the side of the first conductive layer away from the substrate;

[0033] A second conductive layer is prepared on the side of the insulating layer away from the substrate;

[0034] In the edge region, the distance from the end of the first conductive layer away from the central region to the central region is greater than or equal to the distance from the end of the second conductive layer away from the central region to the central region.

[0035] A fourth aspect of this application provides a method for manufacturing a display module, the display module including a display area and a non-display area surrounding the display area, the method for manufacturing the display module including:

[0036] Fabrication of display panels;

[0037] A first conductive layer, an insulating layer, and a second conductive layer are sequentially stacked on one side of the display panel; the first conductive layer is located on the side of the second conductive layer closer to the display panel.

[0038] In the non-display area, the distance from the end of the first conductive layer away from the display area to the display area is greater than or equal to the distance from the end of the second conductive layer away from the display area to the display area.

[0039] In the touch panel of this application embodiment, in the edge region, the distance from the end of the first conductive layer away from the central region to the central region is greater than or equal to the distance from the end of the second conductive layer away from the central region to the central region. The second conductive layer will not form a film on the boundary of the first conductive layer. When the touch panel is applied in FIAA technology, the tensile strength of the insulating layer is improved at the bending start position, and the insulating layer will hardly break, thus preventing the second conductive layer from breaking, thereby improving the yield of the touch panel. Attached Figure Description

[0040] Figure 1This is a schematic diagram of the structure of a touch panel in the prior art.

[0041] Figure 2 This is a schematic diagram of the structure of a touch panel in one embodiment of this application.

[0042] Figure 3 This is a schematic diagram of the structure of the touch panel in another embodiment of this application.

[0043] Figure 4 This is a schematic diagram of the structure of a display module in the prior art.

[0044] Figure 5 This is a schematic diagram of the structure of the display module in one embodiment of this application.

[0045] Figure 6 This is a schematic diagram of the display module structure in another embodiment of this application.

[0046] Figure 7 This is a schematic diagram of the display module structure in another embodiment of this application.

[0047] Figure 8 This is a schematic diagram of the display module structure in another embodiment of this application.

[0048] Figure 9 This is a schematic diagram of the display module structure in another embodiment of this application.

[0049] Figure 10 This is a schematic diagram of the process for preparing a touch panel in one embodiment of this application.

[0050] Figure 11 This is a schematic diagram of the manufacturing process of a display module in one embodiment of this application. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods and means well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0053] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0054] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0055] In the process of realizing this invention, the inventors discovered the following problems in the related technology: In the existing FIAA technical solutions, referring to Figure 1 The schematic diagram of the touch panel structure shown shows that the end of the second conductive layer 400 away from the central region 10 is located on the side of the first conductive layer 200 away from the central region 10. Near the starting position of the bend, the inorganic film layer (insulating layer 300) in the touch panel is subjected to tensile stress, which causes the insulating layer 300 to crack. The crack extends to the edge of the first conductive layer 200, causing the upper second conductive layer 400 to break, ultimately resulting in poor touch control.

[0056] In view of this, the first aspect of this application provides a touch panel, referring to... Figure 2 and Figure 3 The schematic diagram of the touch panel shown illustrates that the touch panel includes a central region 10 and an edge region 20 that at least partially surrounds the central region. The touch panel includes: a substrate 100; a first conductive layer 200 located on one side of the substrate 100; an insulating layer 300 located on the side of the first conductive layer 200 away from the substrate 100; and a second conductive layer 400 located on the side of the insulating layer 300 away from the substrate 100. The orthographic projection of the second conductive layer 400 onto the substrate 100 overlaps with the orthographic projection of the first conductive layer 200 onto the substrate 100. Specifically, in the edge region 20, the distance from the end of the first conductive layer 200 away from the central region 10 to the central region 10 is greater than the distance from the end of the second conductive layer 400 away from the central region 10 to the central region 10 (see details). Figure 2 Alternatively, the distance from one end of the first conductive layer 200 away from the central region 10 to the central region 10 is equal to the distance from one end of the second conductive layer 400 away from the central region 10 to the central region 10 (see details). Figure 3 ).

[0057] It should be noted that, Figure 2 and Figure 3 The diagram only shows a partial schematic of the touch panel structure in the edge area and should not be construed as a limitation of this application.

[0058] In the touch panel of this application embodiment, in the edge region, the distance from the end of the first conductive layer away from the central region to the central region is greater than or equal to the distance from the end of the second conductive layer away from the central region to the central region. The second conductive layer will not form a film on the boundary of the first conductive layer. When the touch panel is applied in FIAA technology, the tensile strength of the insulating layer is improved at the bending start position, and the insulating layer will hardly break, thus preventing the second conductive layer from breaking, thereby improving the yield of the touch panel.

[0059] In one embodiment, the first conductive layer includes a bridging portion, and the second conductive layer includes a first touch electrode and a second touch electrode. The bridging portion is electrically connected to either the first or second touch electrode. Therefore, the touch panel is a capacitive touch panel, which has a wide range of applications. It is understood that in this embodiment, the first conductive layer can be a metal layer or a transparent conductive layer (e.g., an indium tin oxide conductive layer), and the second conductive layer can also be a metal layer or a transparent conductive layer (e.g., an indium tin oxide conductive layer). The second conductive layer includes a first touch electrode and a second touch electrode. The first touch electrode constitutes a transmitting electrode (Tx), and the second touch electrode constitutes a receiving electrode (Rx), or the first touch electrode constitutes a transmitting electrode (Rx), and the second touch electrode constitutes a receiving electrode (Tx).

[0060] Understandably, through holes are provided in the insulating layer to facilitate electrical connection between the bridging part and the first or second touch electrode.

[0061] In one embodiment, the first conductive layer includes a first touch electrode, and the second conductive layer includes a second touch electrode. Therefore, the touch panel is a self-capacitive touch panel, which has a wide range of applications. It is understood that in this embodiment, the first conductive layer can be a metal layer or a transparent conductive layer (e.g., an indium tin oxide conductive layer), and the second conductive layer can also be a metal layer or a transparent conductive layer (e.g., an indium tin oxide conductive layer). The second conductive layer includes both the first and second touch electrodes. The first touch electrode constitutes a transmitting electrode (Tx), and the second touch electrode constitutes a receiving electrode (Rx), or the first touch electrode constitutes a transmitting electrode (Rx), and the second touch electrode constitutes a receiving electrode (Tx).

[0062] It should be noted that when the touch panel of this embodiment is applied to the display module, the central area 10 corresponds to the display area of ​​the display module, and the edge area 20 corresponds to the non-display area of ​​the display module.

[0063] A second aspect of this application provides a display module, as shown in the reference... Figure 5 and Figure 6The schematic diagram of the touch panel shown illustrates that the display module includes a display area 30 and a non-display area 40 surrounding the display area 30. The display module includes a display panel 1 and a touch panel 2 stacked together. The touch panel 2 includes a first conductive layer 200, an insulating layer 300, and a second conductive layer 400 stacked sequentially. The first conductive layer 200 is located on the side of the second conductive layer 400 closest to the display panel 1, and the orthographic projection of the second conductive layer 400 on the display panel 1 overlaps with the orthographic projection of the first conductive layer 200 on the display panel 1. In the non-display area 40, the distance from the end of the first conductive layer 200 furthest from the display area 30 to the display area 30 is greater than the distance from the end of the second conductive layer 400 furthest from the display area 30 to the display area 30 (see details). Figure 5 Alternatively, the distance from the end of the first conductive layer 200 furthest from the display area 30 to the display area 30 is equal to the distance from the end of the second conductive layer 400 furthest from the display area 30 to the display area 30 (see details). Figure 6 ).

[0064] It is understandable that, in the existing technology, referring to Figure 4 The schematic diagram of the display module shown illustrates that in the non-display area 40, the distance from the end of the first conductive layer 200 furthest from the display area 30 to the display area 30 is less than the distance from the end of the second conductive layer 400 furthest from the display area 30 to the display area 30. This causes tensile stress on the insulating layer 300 at the start of bending, leading to compression and cracking of the insulating layer 300. The crack extends to the surface where the second conductive layer 400 contacts the insulating layer 300, causing the second conductive layer 400 to break, ultimately resulting in defects in the touch panel and even the display module. However, in the embodiment of this application, in the non-display area 40, the distance from the end of the first conductive layer 200 furthest from the display area 30 to the display area 30 is greater than or equal to the distance from the end of the second conductive layer 400 furthest from the display area 30 to the display area 30. This prevents compression and cracking of the insulating layer 300, thus almost eliminating the possibility of breakage of the second conductive layer 400. This results in a higher yield rate for the touch panel and display module, making it particularly suitable for FIAA technology.

[0065] It should be noted that in this embodiment, the touch panel in the display module is consistent with the previous description, and will not be repeated here. It can be understood that the display area in the display module corresponds to the central area of ​​the touch panel in the previous embodiment, and the non-display area in the display module corresponds to the edge area of ​​the touch panel in the previous embodiment.

[0066] It should be noted that the display module in this embodiment can be combined with some or all of the previous embodiments of the touch panel, which will not be elaborated further here.

[0067] In one embodiment, the first conductive layer includes a bridging portion, and the second conductive layer includes a first touch electrode and a second touch electrode. The bridging portion is electrically connected to either the first or second touch electrode. Therefore, the touch panel is a capacitive touch panel, which has a wide range of applications. It is understood that in this embodiment, the first conductive layer can be a metal layer or a transparent conductive layer (e.g., an indium tin oxide conductive layer), and the second conductive layer can also be a metal layer or a transparent conductive layer (e.g., an indium tin oxide conductive layer). The second conductive layer includes a first touch electrode and a second touch electrode. The first touch electrode constitutes a transmitting electrode (Tx), and the second touch electrode constitutes a receiving electrode (Rx), or the first touch electrode constitutes a transmitting electrode (Rx), and the second touch electrode constitutes a receiving electrode (Tx).

[0068] In one embodiment, the first conductive layer includes a first touch electrode, and the second conductive layer includes a second touch electrode. Therefore, the touch panel is a self-capacitive touch panel, which has a wide range of applications. It is understood that in this embodiment, the first conductive layer can be a metal layer or a transparent conductive layer (e.g., an indium tin oxide conductive layer), and the second conductive layer can also be a metal layer or a transparent conductive layer (e.g., an indium tin oxide conductive layer). The second conductive layer includes both the first and second touch electrodes. The first touch electrode constitutes a transmitting electrode (Tx), and the second touch electrode constitutes a receiving electrode (Rx), or the first touch electrode constitutes a transmitting electrode (Rx), and the second touch electrode constitutes a receiving electrode (Tx).

[0069] In one embodiment, refer to Figure 7 The schematic diagram of the display module shown includes a display panel comprising: a substrate 500; a third conductive layer 600 located on the side of the substrate 500 near the touch panel 2, wherein the orthographic projections of the first conductive layer 200 and the third conductive layer 600 on the substrate 500 overlap; and the first conductive layer 200 and the third conductive layer 600 are electrically connected. Therefore, the electrical connection between the first conductive layer 200 and the third conductive layer 600 is simple, easy to implement, and structurally stable, enabling a stable electrical connection between the third conductive layer 600 and the second conductive layer 400.

[0070] It should be noted that the third conductive layer can be a metal or a conductive oxide (such as indium tin oxide). As long as the requirements are met, those skilled in the art can make a flexible choice according to the actual situation.

[0071] In one embodiment, the third conductive layer 600 includes a first conductive sublayer, a second conductive sublayer, and a third conductive sublayer stacked together, with the first conductive sublayer located on the side of the second conductive sublayer facing away from the touch panel 2. Exemplarily, the material of the first conductive sublayer includes titanium; the material of the second conductive sublayer includes aluminum; and the material of the third conductive sublayer includes titanium.

[0072] It is understood that the distance from the end of the third conductive layer 600 furthest from the display area 30 to the display area 30 can be greater than the distance from the end of the first conductive layer 200 furthest from the display area 30 to the display area 30, or the distance from the end of the third conductive layer 600 furthest from the display area 30 to the display area 30 can be equal to the distance from the end of the first conductive layer 200 furthest from the display area 30 to the display area 30, or the distance from the end of the third conductive layer 600 furthest from the display area 30 to the display area 30 can be less than the distance from the end of the first conductive layer 200 furthest from the display area 30 to the display area 30. As long as the requirements are met, those skilled in the art can make flexible choices according to the actual situation.

[0073] In one embodiment, refer to Figure 8 The schematic diagram of the display module shown illustrates that the display panel further includes: a first planarization layer 700, located on the side of the third conductive layer 600 near the touch panel 2; the first planarization layer 700 has through-holes, through which the first conductive layer 200 is electrically connected to the third conductive layer 600. Therefore, the electrical connection between the first conductive layer 200 and the third conductive layer 600 is simple, easy to implement, and structurally stable, enabling a stable electrical connection between the third conductive layer 600 and the second conductive layer 400.

[0074] It is understandable that when the first conductive layer 200 is fabricated, the material forming the first conductive layer is filled in the through-holes of the first planarization layer 700 to achieve a reliable electrical connection between the first conductive layer 200 and the third conductive layer 600.

[0075] In one embodiment, refer to Figure 9 The schematic diagram of the display module shown illustrates that the display panel further includes a fourth conductive layer 800, located on the side of the substrate 500 near the third conductive layer 600. The orthographic projection of the fourth conductive layer 800 onto the substrate 500 overlaps with the orthographic projection of the third conductive layer 600 onto the substrate 500, and the fourth conductive layer 800 and the third conductive layer 600 are electrically connected. Therefore, the electrical connection between the third conductive layer 600 and the fourth conductive layer 800 is simple, easy to implement, and structurally stable, enabling a stable electrical connection between the fourth conductive layer 800 and the second conductive layer 400.

[0076] In one embodiment, the fourth conductive layer 800 includes a fourth conductive sublayer, a fifth conductive sublayer, and a sixth conductive sublayer stacked together, with the fourth conductive sublayer located on the side of the fifth conductive sublayer facing away from the touch panel 2; exemplarily, the material of the fourth conductive sublayer includes titanium; the material of the fifth conductive sublayer includes aluminum; and the material of the sixth conductive sublayer includes titanium.

[0077] It is understandable that the fourth conductive layer 800 connects to the touch signal lines, which are located in the non-display area. Specifically, the touch signal lines are located on the side of the fourth conductive layer 800 furthest from the display area 30. The touch signal lines are arranged in a twisted pattern, which facilitates routing, occupies less space, and helps release bending stress during bending, thereby improving the yield of the display module. It should be noted that... Figures 5 to 9 The diagram only shows a partial structural schematic of the display module in the non-display area and should not be construed as a limitation of this application.

[0078] It should be noted that the fourth conductive layer can be a metal or a conductive oxide (such as indium tin oxide). As long as the requirements are met, those skilled in the art can make a flexible choice according to the actual situation.

[0079] It is understood that the distance from the end of the fourth conductive layer 800 furthest from the display area 30 to the display area 30 can be greater than the distance from the end of the first conductive layer 200 furthest from the display area 30 to the display area 30, or the distance from the end of the fourth conductive layer 800 furthest from the display area 30 to the display area 30 can be equal to the distance from the end of the first conductive layer 200 furthest from the display area 30 to the display area 30, or the distance from the end of the fourth conductive layer 800 furthest from the display area 30 to the display area 30 can be less than the distance from the end of the first conductive layer 200 furthest from the display area 30 to the display area 30. As long as the requirements are met, those skilled in the art can make flexible choices according to the actual situation.

[0080] In one embodiment, refer to Figure 9 The schematic diagram of the display module shown illustrates that the display panel further includes a second planarization layer 900 located on the side of the fourth conductive layer 800 near the third conductive layer 600. The second planarization layer 900 has through-holes, through which the third conductive layer 600 is electrically connected to the fourth conductive layer 800. Therefore, the electrical connection between the third conductive layer 600 and the fourth conductive layer 800 is simple, easy to implement, and structurally stable, enabling a stable electrical connection between the two layers.

[0081] Understandably, when fabricating the third conductive layer 600, the material forming the third conductive layer fills the through-holes of the second planarization layer 900 to achieve a reliable electrical connection between the third conductive layer 600 and the fourth conductive layer 800.

[0082] It is understood that the first and second planarization layers are insulating layers, such as optical adhesive layers or other insulating material layers. As long as the requirements are met, those skilled in the art can make flexible choices.

[0083] For example, the vias in the first planarization layer, the vias in the second planarization layer, and the vias in the insulating layer may partially overlap or not overlap at all on the substrate, which helps to alleviate stress concentration problems in the display panel.

[0084] It is understood that when FIAA technology is applied to the display module in the embodiments of this application, the display module needs to be partially bent, and the bending start point is located on the side of the first conductive layer away from the display area.

[0085] It should be noted that, in addition to the third conductive layer, fourth conductive layer, first planarization layer and second planarization layer mentioned above, the display panel may also include structures that conventional display panels should have, such as pixel definition layer (PDL), support pillars (SPC), light-emitting devices located in the display area, encapsulation layer and other structures, which will not be elaborated on further here.

[0086] For example, in the display area, the function of the third conductive layer 600 and the fourth conductive layer 800 is to transmit signals. For example, in the display area, signals in the substrate are transmitted to the light-emitting device through the third conductive layer 600 and the fourth conductive layer 800.

[0087] It should be noted that, in addition to the display panel and touch panel mentioned above, the display module may also include the structures that a conventional display module should have, such as cover plates and driver chips, which will not be elaborated on further here.

[0088] It is understood that the display module in the embodiments of this application can be a liquid crystal display module or an organic light-emitting diode (OLED) display module.

[0089] For example, the display module can be used to display color images or black and white images; for example, the display module can be used for dynamic display or static display.

[0090] For example, the display module can be a flexible display module, in which case the substrate in the display panel is a flexible substrate (e.g., a polyimide substrate), and the flexible display module can be applied to wearable devices, foldable devices and other scenarios.

[0091] A third aspect of this application provides a method for manufacturing a touch panel, the touch panel comprising a central region and an edge region surrounding the central region, referring to... Figure 10 The diagram shows a process flow chart for manufacturing a touch panel, which includes the following steps.

[0092] S110: Provides a substrate.

[0093] S120: A first conductive layer is prepared on one side of the substrate.

[0094] It should be noted that the first conductive layer is consistent with the previous description, and will not be elaborated on further here.

[0095] For example, preparing a first conductive layer on one side of a substrate includes the following steps: preparing a first conductive material layer on one side of the substrate, and performing a patterning process (e.g., exposure, development, and etching) on ​​the first conductive material layer to obtain the first conductive layer.

[0096] S130: An insulating layer is prepared on the side of the first conductive layer away from the substrate.

[0097] It should be noted that the insulation layer is the same as described above, and will not be repeated here.

[0098] For example, preparing an insulating layer on the side of the first conductive layer away from the substrate includes: preparing an insulating material layer on the side of the first conductive layer away from the substrate, and forming through holes in the insulating material layer to obtain the insulating layer.

[0099] S140: A second conductive layer is prepared on the side of the insulating layer away from the substrate.

[0100] It should be noted that the second conductive layer is consistent with the previous description, and will not be elaborated further here.

[0101] For example, preparing a second conductive layer on the side of the insulating layer away from the substrate includes the following steps: preparing a second conductive material layer on the side of the insulating layer away from the substrate, and performing a patterning process (e.g., exposure, development, and etching) on ​​the second conductive material layer to obtain the second conductive layer.

[0102] It is understood that, in the edge region, the distance from the end of the first conductive layer away from the central region to the central region is greater than or equal to the distance from the end of the second conductive layer away from the central region to the central region.

[0103] A fourth aspect of this application provides a method for manufacturing a display module, the display module including a display area and a non-display area surrounding the display area, as described below. Figure 11 The diagram shows a process flow chart for manufacturing a display module. The manufacturing process for the display module includes the following steps.

[0104] S210: Fabrication of the display panel.

[0105] It should be noted that the display panel is the same as described above, so we will not go into further detail here.

[0106] For example, the manufacturing method of the display panel can refer to the conventional manufacturing method of the display panel, and will not be described in detail here.

[0107] S220: A first conductive layer, an insulating layer, and a second conductive layer are sequentially stacked on one side of the display panel.

[0108] It should be noted that the first conductive layer is located on the side of the second conductive layer closest to the display panel.

[0109] It should be noted that the first conductive layer, the insulating layer, and the second conductive layer, as well as their preparation methods, are consistent with the previous descriptions and will not be elaborated further here.

[0110] It should be noted that in the non-display area, the distance from the end of the first conductive layer away from the display area to the display area is greater than or equal to the distance from the end of the second conductive layer away from the display area to the display area.

[0111] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0112] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A touch panel, characterized in that, The touch panel includes a central region and an edge region at least partially surrounding the central region, the touch panel comprising: substrate; A first conductive layer is located on one side of the substrate; An insulating layer is located on the side of the first conductive layer away from the substrate; The second conductive layer is located on the side of the insulating layer away from the substrate, and at least a portion of the orthographic projection of the second conductive layer on the substrate overlaps with the orthographic projection of the first conductive layer on the substrate; the bending start point of the touch panel is located on the side of the first conductive layer away from the central region. In the edge region, the distance from the end of the first conductive layer away from the central region to the central region is greater than or equal to the distance from the end of the second conductive layer away from the central region to the central region.

2. The touch panel according to claim 1, characterized in that, The first conductive layer includes a bridging portion, and the second conductive layer includes a first touch electrode and a second touch electrode, wherein the bridging portion is electrically connected to either the first touch electrode or the second touch electrode; or... The first conductive layer includes a first touch electrode, and the second conductive layer includes a second touch electrode.

3. A display module, characterized in that, The display module includes a display area and a non-display area at least partially surrounding the display area, the display module comprising: The display panel and touch panel are stacked together; The touch panel includes a first conductive layer, an insulating layer, and a second conductive layer stacked sequentially. The first conductive layer is located on the side of the second conductive layer closer to the display panel, and at least a portion of the orthographic projection of the second conductive layer on the display panel overlaps with the orthographic projection of the first conductive layer on the display panel. The bending start point of the display module is located on the side of the first conductive layer away from the display area. In the non-display area, the distance from the end of the first conductive layer away from the display area to the display area is greater than or equal to the distance from the end of the second conductive layer away from the display area to the display area.

4. The display module according to claim 3, characterized in that, The first conductive layer includes a bridging portion, and the second conductive layer includes a first touch electrode and a second touch electrode, wherein the bridging portion is electrically connected to either the first touch electrode or the second touch electrode; or... The first conductive layer includes a first touch electrode, and the second conductive layer includes a second touch electrode.

5. The display module according to claim 3, characterized in that, The display panel includes: Substrate; The third conductive layer is located on the side of the substrate closer to the touch panel, and the orthographic projection of the first conductive layer on the substrate overlaps with the orthographic projection of the third conductive layer on the substrate. The first conductive layer is electrically connected to the third conductive layer.

6. The display module according to claim 5, characterized in that, The display panel further includes: a first planarization layer, which is located on the side of the third conductive layer near the touch panel, and has through holes in the first planarization layer, through which the first conductive layer is electrically connected to the third conductive layer.

7. The display module according to claim 6, characterized in that, The third conductive layer includes a first conductive sublayer, a second conductive sublayer, and a third conductive sublayer stacked together, with the first conductive sublayer located on the side of the second conductive sublayer facing away from the touch panel.

8. The display module according to claim 7, characterized in that, The material of the first conductive layer includes titanium; and / or the material of the second conductive layer includes aluminum; and / or the material of the third conductive layer includes titanium.

9. The display module according to any one of claims 5 to 8, characterized in that, The display panel further includes: a fourth conductive layer located on the side of the substrate close to the third conductive layer, wherein the orthographic projection of the fourth conductive layer on the substrate overlaps with the orthographic projection of the third conductive layer on the substrate, and the fourth conductive layer is electrically connected to the third conductive layer.

10. The display module according to claim 9, characterized in that, The display panel further includes: a second planarization layer located on the side of the fourth conductive layer near the third conductive layer, the second planarization layer having a through hole, and the third conductive layer being electrically connected to the fourth conductive layer through the through hole.

11. The display module according to claim 10, characterized in that, The fourth conductive layer includes a fourth conductive sublayer, a fifth conductive sublayer, and a sixth conductive sublayer stacked together, with the fourth conductive sublayer located on the side of the fifth conductive sublayer facing away from the touch panel.

12. The display module according to claim 11, characterized in that, The material of the fourth conductive layer includes titanium; and / or, the material of the fifth conductive layer includes aluminum; and / or, the material of the sixth conductive layer includes titanium.

13. A method for manufacturing a touch panel, characterized in that, The touch panel includes a central region and an edge region surrounding the central region, and the manufacturing method includes: Provide a substrate; A first conductive layer is prepared on one side of the substrate; An insulating layer is formed on the side of the first conductive layer away from the substrate; the bending start point of the touch panel is located on the side of the first conductive layer away from the central region; A second conductive layer is formed on the side of the insulating layer away from the substrate; In the edge region, the distance from the end of the first conductive layer away from the central region to the central region is greater than or equal to the distance from the end of the second conductive layer away from the central region to the central region.

14. A method for manufacturing a display module, characterized in that, The display module includes a display area and a non-display area surrounding the display area, and the method for manufacturing the display module includes: Fabrication of display panels; A first conductive layer, an insulating layer, and a second conductive layer are sequentially stacked on one side of the display panel; the first conductive layer is located on the side of the second conductive layer closer to the display panel; the bending start point of the display module is located on the side of the first conductive layer away from the display area. In the non-display area, the distance from the end of the first conductive layer away from the display area to the display area is greater than or equal to the distance from the end of the second conductive layer away from the display area to the display area.

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