Touch display panel and manufacturing method thereof

Abstract

The application discloses a touch display panel and a manufacturing method thereof. The touch display panel comprises a substrate and a lead layer located on the first side of the substrate. The lead layer comprises a plurality of touch connection traces and a plurality of display connection traces arranged side by side along a first direction. A plurality of interval regions are arranged along the first direction between the plurality of touch connection traces. At least two interval regions are provided with the display connection traces, and the adjacent interval regions are separated by the touch connection traces. The touch display panel provided by the application can reduce the width of the wiring area.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a touch display panel and a manufacturing method thereof. Background Art

[0002] Touch display panels are popular with consumers for their ease of human-computer interaction. In a touch display panel, the touch and display layers are located in the display area, and both layers are electrically connected to bonding terminals in the bonding area via traces within the flexure.

[0003] Currently, due to limitations in the manufacturing process, the wiring connecting the touch function layer in the bending area occupies a large amount of space, resulting in the width of the bending area being limited when it is narrowed. Summary of the Invention

[0004] The present application provides a touch display panel and a manufacturing method thereof, which can reduce the width of a wiring area in the touch display panel.

[0005] A first aspect of an embodiment of the present application provides a touch display panel, comprising a substrate and a lead layer located on a first side of the substrate, the lead layer comprising: a plurality of touch connection lines and a plurality of display connection lines arranged in parallel along a first direction; wherein, a plurality of spacing areas arranged along the first direction are arranged between the plurality of touch connection lines, at least two of the spacing areas are provided with display connection lines, and adjacent spacing areas are separated by touch connection lines.

[0006] Among them, the touch connection routing includes a first wire segment and a second wire segment connected; preferably, the first wire segments of multiple touch connection routings are arranged in parallel along the first direction, and the second wire segments of multiple touch connection routings are arranged in parallel along the first direction, and the line width of the first wire segment is greater than the line width of the display connection routing; preferably, the line width of the first wire segment is greater than the line width of the second wire segment.

[0007] Among them, the touch display panel includes a bendable area, and a first non-bending area and a bonding area located on opposite sides of the bendable area; multiple touch connection lines and multiple display connection lines extend from the first non-bending area to the bendable area; the first wire segment is located in the first non-bending area, and at least part of the second wire segment is located in the bendable area; preferably, the bonding area is provided with a bonding pad, and the bonding pad is electrically connected to the touch connection line and the display connection line.

[0008] In which, the touch display panel also includes: a display layer and a touch layer located on the first side of the substrate and stacked in sequence in a direction away from the substrate, and the display layer and the touch layer are located in the first non-bending area; wherein, the display connection line is electrically connected to the display layer, and the touch connection line is electrically connected to the touch layer; preferably, multiple display connection lines are DC potential lines electrically connected to the display layer; preferably, the display layer includes a light-emitting device layer, and multiple display connection lines are DC potential lines electrically connected to the cathode layer in the light-emitting device layer.

[0009] The plurality of second conductor segments and the plurality of display connection lines are arranged on the same layer and are made of the same material.

[0010] Among them, the second wire segment and the display connection line are both a laminated structure, and the laminated structure includes a first conductive material layer, a second conductive material layer and a third conductive material layer arranged in sequence; wherein the thickness of the first conductive material layer and the third conductive material layer is less than the thickness of the second conductive material layer, and the corrosion resistance of the first conductive material layer and the third conductive material layer is stronger than the corrosion resistance of the second conductive material layer.

[0011] The first conductive material layer and the third conductive material layer are both made of titanium, and the second conductive material layer is made of aluminum.

[0012] There are at least two second conductive line segments in each touch connection line and the segments are arranged in parallel along the first direction. The first conductive line segment in each touch connection line is electrically connected to the at least two second conductive line segments.

[0013] The first non-bending area includes a display area, and the display area is in the shape of a circle, an ellipse, or a regular polygon with a side number greater than or equal to 6.

[0014] A first aspect of an embodiment of the present application provides a method for manufacturing a touch display panel, comprising: providing a substrate; forming a lead layer on the substrate, the lead layer comprising a plurality of touch connection lines and a plurality of display connection lines arranged in parallel along a first direction; a plurality of spacing areas arranged along the first direction are provided between the plurality of touch connection lines, at least two of the spacing areas are provided with display connection lines, adjacent spacing areas are separated by the touch connection lines, and the manufacturing process accuracy of at least part of the touch connection lines is lower than the manufacturing process accuracy of the display connection lines.

[0015] The beneficial effect is that the present application utilizes the space between two adjacent touch connection lines to place the display connection line, which can fully utilize the idle space and reduce the width of the touch display panel wiring area. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0017] Figure 1 is a schematic cross-sectional view of an embodiment of a touch display panel of the present application;

[0018] Figure 2 yes Figure 1 Schematic diagram of the relative positions of touch connection lines and display connection lines in the touch display panel;

[0019] Figure 3 yes Figure 2 Schematic cross-section of the structure along the AA direction;

[0020] Figure 4 yes Figure 2 Schematic cross-section of the structure along the BB direction;

[0021] Figure 5 yes Figure 1 A schematic diagram of the top view of the touch display panel when the bendable area is not bent;

[0022] Figure 6 yes Figure 2 A schematic cross-sectional view of the second conductor segment;

[0023] Figure 7 This is a schematic diagram of the relative positions of touch connection lines and display connection lines in another embodiment of the touch display panel of the present application;

[0024] Figure 8 yes Figure 5 A schematic diagram of the top view of the touch display panel after being bent in the bendable area;

[0025] Figure 9 This is a schematic structural diagram of an embodiment of the electronic device of the present application;

[0026] Figure 10 This is a flow chart of an embodiment of a method for manufacturing a touch display panel of the present application;

[0027] Figure 11 It is a schematic diagram of the projection of the signal lines in the touch display panel on the plane where the light emitting surface of the touch display panel is located in the related art. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] Combine Figure 1 and Figure 2 In one embodiment, the touch display panel 1000 includes a substrate 1100 and a lead layer 1200. The lead layer 1200 is disposed on a first side of the substrate 1100. The substrate 1100 mainly plays a supporting role, and the lead layer 1200 is mainly used for wiring. The lead layer 1200 includes a first direction ( Figure 2 The substrate 1100 may be a flexible substrate, such as a polyimide or other material. The substrate 1100 may also be a rigid substrate, such as a glass substrate.

[0030] Specifically, the touch connection line 1210 is used to transmit touch signals in the touch display panel 1000 , and the display connection line 1220 is used to transmit display signals related to screen display in the touch display panel 1000 .

[0031] A plurality of spacing regions 1201 arranged along the first direction X are provided between the plurality of touch connection traces 1210 . Display connection traces 1220 are provided in at least two spacing regions 1201 . Adjacent spacing regions 1201 are separated by the touch connection traces 1210 .

[0032] That is, multiple display connection lines 1220 are dispersed between multiple touch connection lines 1210. For example, one display connection line 1220 may exist between two adjacent touch connection lines 1210, or two or more display connection lines 1220 may exist between two adjacent touch connection lines 1210. One or more display connection lines 1220 may be provided in any spacing area 1201.

[0033] At least portions of the touch connection traces 1210 can be fabricated using a touch layer process. Due to the limited precision of the touch layer process, some sections of the touch connection traces 1210 have a larger pitch (the center-to-center distance between two adjacent sections of the touch connection traces 1210), for example, greater than 40 μm. This means that the space between two adjacent touch connection traces 1210 is larger. The spacing between adjacent touch connection traces 1210 (which can be the spacing between adjacent first conductive line segments 1211) can be equal to the minimum dimension achievable by the touch layer process. The maximum width of the touch connection traces 1210 (which can be the line width of the first conductive line segments 1211) can be equal to the minimum dimension achievable by the touch layer process. The low precision of the touch layer process can reduce equipment investment costs and mask costs. This embodiment utilizes the space between two adjacent touch connection traces 1210 to place the display connection traces 1220, fully utilizing unused space and reducing the width of the wiring area of ​​the touch display panel 1000. The display connection lines 1220 can be manufactured using the array process used to manufacture the display layer, so the manufacturing precision is high, and the display connection lines 1220 with smaller line widths can be manufactured, and the line spacing can also be made smaller.

[0034] Continue reading Figure 2 The touch connection trace 1210 includes a first wire segment 1211 and a second wire segment 1212 that are connected.

[0035] The first wire segment 1211 and the second wire segment 1212 can be arranged in different layers or in the same layer. Figure 3 When the first wire segment 1211 and the second wire segment 1212 are not arranged in the same layer, the first wire segment 1211 and the second wire segment 1212 can be electrically connected through the wire exchange hole 11.

[0036] The display connection trace 1220 and the second wire segment 1212 can be arranged in the same layer or in different layers, for example, Figure 4 In FIG. 1 , the connecting trace 1220 and the second conductor segment 1212 are arranged on the same layer.

[0037] In this embodiment, optionally, the first wire segments 1211 of the plurality of touch connection traces 1210 are arranged in parallel along the first direction X. Optionally, the second wire segments 1212 of the plurality of touch connection traces 1210 are arranged in parallel along the first direction X. Limited by the accuracy of the touch layer process, the line width D1 of the first wire segment 1211 is greater than the line width D2 of the display connection trace 1220. The first wire segment 1211 can be manufactured by the touch layer process technology. The first wire segment 1211 and part of the film layer in the touch layer can be obtained by patterning the same conductive layer, that is, formed by the same composition process. The spacing between adjacent first wire segments 1211 can be equal to the minimum size that can be achieved by the touch layer process technology. As Figure 2 As shown, the spacing between adjacent first wire segments 1211 is the spacing in the first direction X. The line width of the first wire segment 1211 can be equal to the minimum size that can be achieved by the touch layer process. The line width D1 of the first wire segment 1211 is the size in the direction perpendicular to the extension direction of the first wire segment 1211. For example, Figure 2 As shown, the line width D1 of the first wire segment 1211 is the dimension in the first direction X. The line width D2 of the display connection line 1220 is the dimension in the extending direction perpendicular to the display connection line 1220. For example, Figure 2 As shown, the line width D1 of the first conductive line segment 1211 is the dimension in the first direction X.

[0038] Optionally, the second wire segment 1212 can be manufactured by a touch layer process. The second wire segment 1212 and part of the film layer in the touch layer can be obtained by patterning the same conductive layer, that is, formed by the same composition process. The spacing between adjacent second wire segments 1212 can be equal to the minimum size that can be achieved by the touch layer process. The line width of the second wire segment 1212 can be equal to the minimum size that can be achieved by the touch layer process. The line width D3 of the second wire segment 1212 can be equal to the line width D1 of the first wire segment 1211. The line width D3 of the second wire segment 1212 is the dimension in the extension direction perpendicular to the second wire segment 1212, for example, Figure 2 As shown, the line width of the second conductive line segment 1212 is the dimension in the first direction X.

[0039] Optionally, the second conductive segment 1212 can be fabricated using the same array manufacturing process used to manufacture the display layer. The second conductive segment 1212 and portions of the film layer in the display layer can be patterned on the same conductive layer, i.e., formed using the same patterning process. The line width of the second conductive segment 1212 can be equal to or smaller than the line width of the first conductive segment 1211.

[0040] In order to gradually reduce the width of the wiring area of ​​the touch display panel 1000, optionally, the line width D1 of the first wire segment 1211 is greater than the line width D3 of the second wire segment 1212, so that the width of the wiring area occupied by the second wire segment 1212 can be smaller than the width of the wiring area occupied by the first wire segment 1211, thereby reducing the volume of the lead layer 1200 and improving the bendability.

[0041] Combine Figure 1 and Figure 5 In this embodiment, the touch display panel 1000 includes a bendable area 1001 , and a first non-bending area 1002 and a bonding area 1003 located on opposite sides of the bendable area 1001 .

[0042] The first non-bending region 1002 is primarily used to implement display and touch functions, while the bonding region 1003 is used to bond one or more bonding components, such as a display driver chip, a touch chip, and a flexible circuit board. The bendable region 1001 can be bent so that the bonding region 1003, with the bonding components bonded, is located behind the first non-bending region 1002, thereby achieving a narrow-frame design for the touch display panel 1000. For example, the bonding region 1003 is bonded to the flexible circuit board, and the display driver chip and touch chip can be bonded to the flexible circuit board. For example, the display driver chip and touch chip are bonded to the bonding region 1003.

[0043] Among them, multiple touch connection lines 1210 and multiple display connection lines 1220 can extend from the first non-bending area 1002 to the bendable area 1001. Specifically, the touch connection lines 1210 and the display connection lines 1220 are arranged to extend from the first non-bending area 1002 to the bendable area 1001, so that the display signals and touch signals in the first non-bending area 1002 can be transmitted to the bendable area 1001. Therefore, after the bendable area 1001 is bent, the display signals and touch signals in the first non-bending area 1002 can be transmitted to the back side of the first non-bending area 1002. That is, through the bendable area 1001, the display signals and touch signals on the front side of the touch display panel 1000 are transmitted to the back side of the touch display panel 1000. The direction from the first non-bending area 1002 to the bendable area 1001 can be parallel to the direction Y.

[0044] First wire segment 1211 may be located in first non-bending zone 1002, and at least a portion of second wire segment 1212 may be located in bendable zone 1001. Optionally, the entire second wire segment 1212 may be located in bendable zone 1001. A portion of second wire segment 1212 may be located in bendable zone 1001, and another portion may be located in first non-bending zone 1002. Optionally, specifically, by setting the line width D1 of first wire segment 1211 located in first non-bending zone 1002 to be greater than the line width D3 of second wire segment 1212 located in bendable zone 1001, the width of bendable zone 1001 may be smaller than the width of first non-bending zone 1002, thereby reducing the difficulty of bending bendable zone 1001.

[0045] Bonding area 1003 is further provided with bonding pads 10031, which are electrically connected to touch connection traces 1210 and display connection traces 1220. It is understood that the bonding pads 10031 electrically connected to touch connection traces 1210 and display connection traces 1220 are not the same. There may be multiple bonding pads 10031. Some bonding pads 10031 may be electrically connected to touch connection traces 1210, while other bonding pads 10031 may be electrically connected to display connection traces 1220.

[0046] Specifically, after bonding components such as the driver chip and the touch chip are bonded to the bonding area 1003, the input and output pins on the driver chip and the touch chip are electrically connected to the bonding pad 10031, wherein the touch chip is electrically connected to the touch connection trace 1210 through the bonding pad 10031, and the driver chip is electrically connected to the display connection trace 1220 through the bonding pad 10031.

[0047] Combine Figure 1 and Figure 5 The touch display panel 1000 further includes a display layer 1300 and a touch layer 1400 located on a first side of the substrate 1100 and stacked in a direction away from the substrate 1100. The display layer 1300 is used to display images, and the touch layer 1400 is used to sense user touch signals. The display layer 1300 and the touch layer 1400 are located in the first non-bending region 1002.

[0048] The display layer 1300 may include a drive array layer and a light-emitting device layer located on a first side of the substrate 1100 and stacked in a direction away from the substrate 1100. The drive array layer may include stacked semiconductor layers, conductive layers, and insulating layers. The drive array layer may be used to form structures such as thin-film transistors, storage capacitors, scan lines, and data lines. The touch layer 1400 typically includes touch electrodes and other structures. The touch layer 1400 may be a capacitive touch layer, for example. Capacitive touch layers may include self-capacitive touch layers or mutual-capacitive touch layers.

[0049] The light emitting device layer may be an organic light emitting device layer, etc. The light emitting device layer may include an anode layer, a light emitting functional layer, and a cathode layer stacked along the thickness direction of the touch display panel.

[0050] Optionally, the touch display panel 1000 further includes a thin film encapsulation layer. The thin film encapsulation layer may be located between the light emitting device layer and the touch layer 1400. The thin film encapsulation layer may include organic layers and inorganic layers alternately stacked along the thickness direction of the touch display panel.

[0051] Among them, the first non-bending area 1002 includes a display area 10021 and a border area 10022 (a non-display area) located outside the display area 10021, and the bendable area 1001 is connected to the border area 10022. Among them, the display layer 1300 and the touch layer 1400 are specifically located in the display area 10021, and the lead layer 1200 is located in the border area 10022, the bendable area 1001 and the bonding area 1003. That is to say, the first wire segment 1211 in the touch connection trace 1210 can be located in the border area 10022.

[0052] See Figure 1 In this embodiment, in order to reduce the difficulty of bending the bendable area 1001, the thickness of the lead layer 1200 located in the bendable area 1001 is set to be smaller than the thickness of the lead layer 1200 located in the first non-bending area 1002.

[0053] The display connection line 1220 is electrically connected to the display layer 1300 , and the touch connection line 1210 is electrically connected to the touch layer 1400 .

[0054] Among them, the display connection line 1220 can be set on the same layer as the scan line or data line, power line and other structures in the display layer 1300, that is, the display connection line 1220 and the scan line are patterned on the same conductive layer, or the display connection line 1220 and the data line are obtained.

[0055] The first conductive line segment 1211 may be provided in the same layer as the touch electrode in the touch layer 1400 , that is, the first conductive line segment 1211 and the touch electrode may be obtained by patterning the same conductive layer.

[0056] In order to shield interference between signals transmitted by two adjacent touch connection lines 1210 , the display connection lines 1220 are all set to be DC potential lines electrically connected to the display layer 1300 , that is, the multiple display connection lines 1220 all transmit DC signals.

[0057] Specifically, setting up multiple display connection lines 1220 to transmit DC signals can not only shield the interference between the signals transmitted by two adjacent touch connection lines 1210, but also prevent the signals transmitted by the display connection lines 1220 from interfering with the signals transmitted by the touch connection lines 1210.

[0058] In this embodiment, the plurality of display connection traces 1220 are all DC potential lines electrically connected to the cathode layer in the light-emitting device layer. Specifically, the light-emitting device layer typically includes an anode layer and a cathode layer, and the plurality of display connection traces 1220 are all electrically connected to the cathode layer. In other words, the plurality of display connection traces 1220 are all ELVSS signal lines, equivalent to low-potential signal lines.

[0059] The light-emitting device layer may be an organic light-emitting diode (OLED) layer or a micro-light-emitting diode (Micro-LED) layer, which is not limited here.

[0060] In this embodiment, the plurality of second conductive line segments 1212 and the plurality of display connection traces 1220 are disposed on the same layer. The plurality of second conductive line segments 1212 and the plurality of display connection traces 1220 may be made of the same material. In other words, the plurality of second conductive line segments 1212 and the plurality of display connection traces 1220 may be obtained by patterning the same conductive layer.

[0061] Among them, setting the second wire segment 1212 and the display connection line 1220 on the same layer can reduce the number of layers of the routing layer of the bendable area 1001, reduce the thickness of the bendable area 1001, and reduce the stress between the various material layers when the bendable area 1001 is bent, thereby improving the bending performance of the bendable area 1001 and avoiding the bendable area 1001 from breaking during the bending process.

[0062] It should be noted that, in other embodiments, the plurality of second conductive line segments 1212 and the plurality of display connection traces 1220 may also be arranged in different layers.

[0063] In this embodiment, see Figure 6The second conductive line segment 1212 and the display connection trace 1220 both have a laminated structure, and the laminated structure includes a first conductive material layer 1221, a second conductive material layer 1222, and a third conductive material layer 1223, which are sequentially arranged. The thickness of the first conductive material layer 1221 and the third conductive material layer 1223 is less than that of the second conductive material layer 1222, and the corrosion resistance of the first conductive material layer 1221 and the third conductive material layer 1223 is stronger than that of the second conductive material layer 1222. The first conductive material layer 1221, the second conductive material layer 1222, and the third conductive material layer 1223 can be sequentially stacked along the thickness direction Z of the substrate 1100. The first conductive material layer 1221, the second conductive material layer 1222, and the third conductive material layer 1223 can include metal materials, etc.

[0064] Specifically, the second conductive material layer 1222 serves as the main part for transmitting signals. The thickness of the first conductive material layer 1221 and the third conductive material layer 1223 is less than the thickness of the second conductive material layer 1222, which is used to protect the second conductive material layer 1222 and prevent the second conductive material layer 1222 from being corroded by external water vapor over time, thereby improving the reliability of the second wire segment 1212 and the display connection trace 1220, and further providing the reliability of the bendable area 1001.

[0065] In one application scenario, considering that titanium has strong corrosion resistance and bending performance, and aluminum has strong conductivity and bending performance, the materials of the first conductive material layer 1221 and the third conductive material layer 1223 are both titanium, and the material of the second conductive material layer 1222 is aluminum.

[0066] The present application does not limit the materials of the first conductive material layer 1221 , the second conductive material layer 1222 , and the third conductive material layer 1223 . For example, in other embodiments, the material of the second conductive material layer 1222 may also be copper.

[0067] It should be noted that, in other embodiments, the second wire segment 1212 and the display connection trace 140 may also be a single-layer structure. For example, the material of the touch connection trace 130 and the display connection trace 140 is aluminum.

[0068] Continue reading Figure 2 In this embodiment, there are at least two second wire segments 1212 in each touch connection trace 1210 and they are arranged in parallel along the first direction X, and the first wire segment 1211 in each touch connection trace 1210 is electrically connected to at least two second wire segments 1212.

[0069] Specifically, compared to the touch connection line 1210 including only one first conductor segment 1211 and one second conductor segment 1212 , providing at least two second conductor segments 1212 electrically connected to the first conductor segment 1211 can reduce the transmission impedance of the touch connection line 1210 .

[0070] It should be noted that, in other embodiments, the touch connection trace 1210 may also include only one first conductor segment 1211 and one second conductor segment 1212 . In this case, the transmission impedance of the touch connection trace 1210 may be reduced by increasing the line width.

[0071] See Figure 2 In this embodiment, the extension directions of the touch connection line 1210 and the display connection line 1220 intersect with the first direction X, for example, they may be perpendicular to each other. However, in other embodiments, the extension directions of the touch connection line 1210 and the display connection line 1220 may not be perpendicular to the first direction, for example, Figure 7 In the embodiment, the second wire segment 1212 and the display connection line 1220 are in the shape of a broken line, rather than Figure 2 The straight line shape in the middle makes the width of the area occupied by the second wire segment 1212 and the display connection line 1220 in the bendable area 1001 as a whole in the first direction X smaller than the width of the area occupied by the first wire segment 1211 and the display connection line 1220 in the first non-bending area 1002 in the first direction X, further reducing the width of the wiring area.

[0072] Continue reading Figure 5 In this embodiment, the display area 10021 can be a rectangle or a special-shaped display area other than a rectangle. The display area 10021 can be a circle, an ellipse, a regular polygon with six or more sides, or a rounded regular polygon. In other words, the touch display panel 1000 of this embodiment is applicable to electronic devices with a screen that is a circle, an ellipse, or a regular polygon with six or more sides. For example, the touch display panel 1000 is applicable to a watch.

[0073] It should be noted that, in other embodiments, the display area 10021 may also be rectangular, and this application does not limit the shape of the display area 10021.

[0074] See Figure 9 , Figure 9 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application. The electronic device 300 includes a touch display panel 310 .

[0075] The touch display panel 310 has the same structure as the touch display panel in any of the above embodiments. For details, please refer to the above embodiments and will not be described again here.

[0076] In one application scenario, the electronic device 300 may be a device whose display area is circular, elliptical, or a regular polygon with six or more sides.

[0077] Combine Figure 1 、 Figure 2 as well as Figure 10 In one embodiment, a method for manufacturing a touch display panel includes:

[0078] S410: providing a substrate 1100 .

[0079] S420: A wiring layer 1200 is formed on the substrate 1100, wherein the wiring layer 1200 includes a plurality of touch connection lines 1210 and a plurality of display connection lines 1220 arranged in parallel along a first direction; a plurality of spacing areas 1201 arranged along the first direction are arranged between the plurality of touch connection lines 1210, at least two spacing areas 1201 are provided with display connection lines 1220, and adjacent spacing areas 1201 are separated by the touch connection lines 1210, and the manufacturing process precision of at least part of the touch connection lines 1210 is less than the manufacturing process precision of the display connection lines 1220.

[0080] The manufacturing process precision of some or all of the touch connection traces 1210 is lower than that of the display connection traces 1220. Some or all of the touch connection traces 1210 are manufactured using the same manufacturing process as the touch layer, while the display connection traces 1220 are manufactured using the same array manufacturing process as the display layer. The lower manufacturing process precision of the touch layer can reduce equipment investment costs and mask costs.

[0081] Optionally, the touch connection trace 1210 includes a first wire segment 1211 and a second wire segment 1212 connected thereto, the manufacturing process precision of the first wire segment 1211 is less than the manufacturing process precision of the display connection trace 1220, and the manufacturing process precision of the second wire segment 1212 is the same as the manufacturing process precision of the display connection trace 1220.

[0082] Specifically, the manufacturing process precision of the first wire segment 1211 is less than the manufacturing process precision of the display connection trace 1220. The minimum line width dimension produced by the manufacturing process of the first wire segment 1211 is less than the minimum line width dimension produced by the manufacturing process of the display connection trace 1220. The minimum line spacing dimension produced by the manufacturing process of the first wire segment 1211 is less than the minimum line spacing dimension produced by the manufacturing process of the display connection trace 1220. The line width of the first wire segment 1211 can be equal to the minimum line width dimension produced by the manufacturing process of the first wire segment 1211. The line spacing between adjacent first wire segments 1211 can be equal to the minimum line spacing dimension produced by the manufacturing process of the first wire segment 1211. The line width D1 of the first wire segment 1211 is greater than the line width D2 of the display connection trace 1220.

[0083] The manufacturing process precision of the second conductive line segment 1212 is the same as the manufacturing process precision of the display connection trace 1220. Optionally, the line width D3 of the second conductive line segment 1212 is equal to the line width D of the display connection trace 1220.

[0084] In the prior art, due to the low manufacturing process precision of the first wire segments 1211, the spacing between adjacent first wire segments 1211 is large, resulting in idle space. However, in this embodiment, the display connection line 1220 is placed in the idle space between two adjacent touch connection lines 1210 during manufacturing, which can reduce the width of the touch display panel wiring area.

[0085] The touch display panel manufactured by the manufacturing method in this embodiment has the same structure as the touch display panel in any of the above embodiments. For details, please refer to the above embodiments and will not be repeated here.

[0086] In related technologies, such as Figure 11 As shown, a plurality of display connection lines 240 are located on both sides of the touch connection lines, and a dummy line 20 is provided between the touch connection lines.

[0087] Due to the precision of the touch layer manufacturing process, the pitch (the center-to-center distance between two adjacent first wire segments 220) of the touch connection trace in the non-bending region 2023 is greater than 40 μm, while the pitch of the trace in the bending region 201 is only about 10 μm. Therefore, in the bending region 201, the first wire segment 220 of the touch connection trace is electrically connected to two adjacent second wire segments 230, leaving an idle dummy trace 20 between the second wire segments 230, resulting in wasted space. The idle zigzag trace 20 is not used to transmit signals or potentials.

[0088] Figure 2 Technical solutions and Figure 11 Compared with the technical solutions Figure 2The technical solution can use the display connection line 1220 to replace the idle virtual line 20 (dummy line), which can reduce the width of the bendable area.

[0089] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A touch display panel, characterized in that: comprising a substrate and a wiring layer located on a first side of the substrate, The lead layer includes: a plurality of touch connection lines and a plurality of display connection lines arranged in parallel along a first direction; A plurality of spacing areas arranged along a first direction are provided between the plurality of touch connection lines, at least two of the spacing areas are provided with the display connection lines, adjacent spacing areas are separated by the touch connection lines, and at least one display connection line exists between two adjacent touch connection lines; Wherein, the touch connection trace includes a first wire segment and a second wire segment connected; The first conductive wire segments of the plurality of touch connection lines are arranged in parallel along a first direction, the second conductive wire segments of the plurality of touch connection lines are arranged in parallel along the first direction, the line width of the first conductive wire segments is greater than the line width of the display connection lines, and the line width of the first conductive wire segments is greater than the line width of the second conductive wire segments; At the same time, the touch display panel includes a bendable area, and a first non-bending area and a bonding area located on opposite sides of the bendable area; A plurality of the touch connection lines and a plurality of the display connection lines extend from the first non-bending area to the bendable area; The first wire segment is located in the first non-bending area, and at least a portion of the second wire segment is located in the bendable area; The plurality of second wire segments and the plurality of display connection lines are provided on the same layer and made of the same material; The first conductive line segment and the second conductive line segment are not arranged in the same layer; The touch display panel further includes: a display layer and a touch layer located on the first side of the substrate and stacked in sequence in a direction away from the substrate, the display layer and the touch layer being located in the first non-bending area; The display connection line is electrically connected to the display layer, and the touch connection line is electrically connected to the touch layer; The first wire segment is provided in the same layer as the touch electrode in the touch layer; The manufacturing process precision of the first wire segment is less than the manufacturing process precision of the display connection wiring; The spacing between adjacent first conductive line segments is equal to the minimum size that can be achieved by the touch layer manufacturing process, and the display connection wiring is arranged between the adjacent first conductive line segments.

2. The touch display panel according to claim 1, wherein: The bonding area is provided with a bonding pad, and the bonding pad is electrically connected to the touch connection wiring and the display connection wiring.

3. The touch display panel according to claim 1, wherein: The plurality of display connection lines are all DC potential lines electrically connected to the display layer.

4. The touch display panel according to claim 3, wherein: The display layer includes a light-emitting device layer, and the plurality of display connection lines are all DC potential lines electrically connected to the cathode layer in the light-emitting device layer.

5. The touch display panel according to claim 1, wherein: The line width of the second conductive line segment is equal to the line width of the display connection line; The line width of the first conductive line segment is equal to the minimum size that can be achieved by the touch layer manufacturing process.

6. The touch display panel according to claim 1, wherein: The second wire segment and the display connection line are both a stacked structure, and the stacked structure includes a first conductive material layer, a second conductive material layer and a third conductive material layer arranged in sequence; wherein the thickness of the first conductive material layer and the third conductive material layer is less than the thickness of the second conductive material layer, and the corrosion resistance of the first conductive material layer and the third conductive material layer is stronger than the corrosion resistance of the second conductive material layer.

7. The touch display panel according to claim 6, wherein: The first conductive material layer and the third conductive material layer are both made of titanium, and the second conductive material layer is made of aluminum.

8. The touch display panel according to claim 1, wherein: There are at least two second conductive line segments in each of the touch connection lines and the second conductive line segments are arranged in parallel along the first direction. The first conductive line segment in each of the touch connection lines is electrically connected to at least two second conductive line segments.

9. The touch display panel according to claim 1, wherein: The first non-bending area includes a display area, and the display area is circular, elliptical, or a regular polygon with 6 or more sides.

10. A method for manufacturing a touch display panel, characterized in that: For preparing the touch display panel according to any one of claims 1 to 9, the method comprises: providing a substrate; A wiring layer is formed on the substrate, the wiring layer including a plurality of touch connection lines and a plurality of display connection lines arranged in parallel along a first direction; a plurality of spacing areas arranged along the first direction are provided between the plurality of touch connection lines, at least two of the spacing areas are provided with the display connection lines, adjacent spacing areas are separated by the touch connection lines, and the manufacturing process precision of at least part of the touch connection lines is lower than the manufacturing process precision of the display connection lines.

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