Touch display panel, preparation method thereof and touch display device

Abstract

The invention discloses a touch display panel, a preparation method of the touch display panel and a touch display device. The touch display panel comprises a substrate and a touch layer arranged on one side of the substrate. The touch layer comprises a patterned touch electrode layer, the touch electrode layer comprises a plurality of touch electrodes, each touch electrode comprises a plurality of electrically connected metal grids, and metal wires of at least part of the metal grids are provided with fractures; the fracture comprises two fracture surfaces and two openings; wherein the fracture is provided with a shielding part, the orthographic projection of the shielding part on the metal wire in the first direction covers the orthographic projection of an opening of the fracture on the metal wire in the first direction, and the first direction is perpendicular to the extension direction of the metal wire where the fracture is located. Light reflection can be formed at the fracture, so that the fracture shadow is effectively reduced, and the display effect of the touch display panel is improved.

Description

Technical Field

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

[0002] With the development of display technology, more and more display panels are integrated with touch functions.

[0003] In the related art, in order to realize the touch function, it is usually necessary to introduce a metal grid into the display panel and cut the metal grid to obtain the touch electrode.

[0004] However, the related technology cannot produce a touch display panel with good performance. Summary of the invention

[0005] In order to solve the above problems or other problems, the present application provides the following technical solutions.

[0006] The first technical solution adopted in the present application is to provide a touch display panel, including: a substrate and a touch layer arranged on one side of the substrate; the touch layer includes a patterned touch electrode layer, the touch electrode layer includes a plurality of touch electrodes, the touch electrodes include a plurality of electrically connected metal grids, and at least some of the metal grids are provided with fractures on the metal wires; the fracture includes two cross-sections and two openings; wherein the fracture is provided with a shielding portion, the shielding portion is an orthographic projection on the metal wire along a first direction covering the orthographic projection of the opening of the fracture on the metal wire along the first direction, and the first direction is perpendicular to the extension direction of the metal wire where the fracture is located.

[0007] Wherein, the shielding portion includes two sections, the two sections are tilted in an angle with the extension direction of the metal wire, and the orthographic projections along the first direction respectively cover the orthographic projections of the two openings along the first direction; wherein, the two angles formed between the two sections and the extension direction of the metal wire are both acute angles; wherein, the two angles formed between the two sections and the extension direction of the metal wire are both greater than or equal to 30° and less than or equal to 60°; wherein, the two sections are arranged in parallel so that the two angles formed between the two sections and the extension direction of the metal wire are equal.

[0008] Wherein, the two sections include a first section and a second section, and the two openings include a first opening and a second opening; the shielding portion includes a first extension portion extending from a side of the first section close to the first opening, and a second extension portion extending from a side of the second section close to the second opening; wherein the orthographic projection of the first extension portion along the first direction is connected to or partially overlapped with the orthographic projection of the second extension portion along the first direction to cover the orthographic projections of the first opening and the second opening along the first direction; wherein the first extension portion and the second extension portion are both in the shape of narrow strips; wherein the length of the first extension portion is equal to the length of the second extension portion.

[0009] The shielding portion includes at least one shielding member arranged at at least one opening, and the orthographic projection of the shielding member along the first direction covers the orthographic projections of the two openings along the first direction.

[0010] Wherein, shielding members are provided at both openings, and the shielding members are provided outside the metal wire and are not connected to the metal wire; wherein, the length extension direction of the shielding members is parallel to the extension direction of the metal wire.

[0011] Among them, a shielding member is arranged at only one of the openings, and the shielding member is arranged outside the metal wire and is not connected to the metal wire.

[0012] The metal wire includes a first surface, a second surface and two side walls connecting the first surface and the second surface, and the first surface is arranged close to the substrate; wherein the angles formed between the two side walls and the first surface are both obtuse angles.

[0013] The angle formed between the side wall and the first surface is greater than or equal to 120° and less than or equal to 150°; the angle formed between the side wall and the first surface is greater than or equal to 130° and less than or equal to 140°.

[0014] To solve the above technical problems, the second technical solution adopted in the present application is to provide a method for preparing a touch display panel, including: obtaining a substrate and making an insulating layer on the substrate; etching the insulating layer to form a groove; wherein the angles formed between the two side walls of the groove and the substrate are both obtuse angles; vapor-depositing a metal layer on the insulating layer, and removing the remaining metal layer outside the groove to form a metal grid; forming a touch layer based on the metal grid; forming a fracture on the metal wire of at least part of the metal grid, and making the fracture include two cross-sections and two openings; forming a shielding portion at the fracture, and making the shielding portion cover the opening of the fracture along the orthographic projection of the first direction, and the first direction is perpendicular to the extension direction of the metal wire where the fracture is located.

[0015] In order to solve the above technical problem, the third technical solution adopted in the present application is to provide a touch display device, including the above touch display panel.

[0016] The beneficial effect of the present application is: different from the related art, the present application provides a touch display panel and a preparation method thereof, and a touch display device. By setting a shielding portion at the fracture, and making the shielding portion's orthographic projection along the first direction respectively cover the orthographic projections of the two openings along the first direction, the light irradiated from the corresponding opening can be reflected by the shielding portion to form a reflection at the fracture, thereby effectively reducing the fracture shadow and then improving the display effect of the touch display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the example description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of an implementation method of a touch display panel of the present application;

[0019] Figure 2 yes Figure 1 A schematic diagram of the arrangement of touch electrodes in the touch layer;

[0020] Figure 3 yes Figure 2 An enlarged structural schematic diagram of an implementation method of the middle A area;

[0021] Figure 4 yes Figure 3 An enlarged structural schematic diagram of the first implementation mode in the middle B area;

[0022] Figure 5 yes Figure 4 An enlarged structural schematic diagram of the first implementation mode of the middle C area;

[0023] Figure 6 yes Figure 4 An enlarged structural schematic diagram of the second implementation mode of the middle C area;

[0024] Figure 7 yes Figure 3 An enlarged structural schematic diagram of the second implementation mode of the middle B area;

[0025] Figure 8 yes Figure 7 The enlarged structural diagram of the first implementation mode of the middle D area;

[0026] Fig. 9 yes Figure 3 An enlarged structural schematic diagram of the third implementation mode in the middle B area;

[0027] Fig.10 yes Fig. 9 An enlarged structural schematic diagram of the first implementation mode of the middle E region;

[0028] Fig.11 yes Figure 5 A schematic diagram of a cross-sectional view of the metal wire cut along line AA;

[0029] Fig.12 yes Figure 5 A schematic diagram of the cross section of the middle metal wire along line BB;

[0030] Fig.13It is a schematic diagram of a process of an implementation method of a touch display panel of the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "said", and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless otherwise clearly indicated above, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0033] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0034] It should be understood that the terms "include", "comprises" or any other variations used herein are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0035] In the related art, the touch layer usually includes a driving electrode (TX) and a sensing electrode (RX). The driving electrode is connected to the IC (integrated circuit) through a driving signal line, and the sensing electrode is connected to the IC through a sensing signal line. The IC sends a driving signal to the driving electrode, and the sensing electrode receives the sent driving signal to identify the touch operation. The driving electrode and the sensing electrode on the touch layer are metal grids formed by touch metal wires, and the metal grid forming the driving electrode and the metal grid forming the sensing electrode need to be separated by a break to prevent the driving electrode and the sensing electrode from short-circuiting. The traditional break arrangement extends in the vertical or horizontal direction according to the shape of the touch pattern. When exposed to strong light, there will be reflections on the side of the metal wire at the break, while there is no reflection at the break, resulting in the formation of a break shadow that seriously affects visibility, thereby affecting the display effect.

[0036] Based on the above situation, the present application provides a touch display panel and a method for manufacturing the same, as well as a touch display device, which can solve the problem that a touch display panel with good performance cannot be manufactured in the above related technologies.

[0037] The touch display panel provided by the present application includes: a substrate and a touch layer arranged on one side of the substrate; the touch layer includes a patterned touch electrode layer, the touch electrode layer includes a plurality of touch electrodes, the touch electrodes include a plurality of electrically connected metal grids, and at least some of the metal grids are provided with fractures on the metal wires; the fractures include two sections and two openings; wherein, the fractures are provided with shielding parts, and the orthographic projection of the shielding parts on the metal wires in the first direction covers the orthographic projection of the openings of the fractures on the metal wires in the first direction, and the first direction is perpendicular to the extension direction of the metal wires where the fractures are located. By providing the shielding parts at the fractures, and making the orthographic projection of the shielding parts along the first direction respectively cover the orthographic projections of the two openings along the first direction, the light irradiated from the corresponding openings can be reflected by the shielding parts, so as to also form reflections at the fractures, thereby effectively reducing the shadow of the fractures, and then improving the display effect of the touch display panel.

[0038] To illustrate the specific structure of the display panel of this application, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 1 is a schematic structural diagram of an embodiment of a touch display panel of the present application, Figure 2 yes Figure 1 A schematic diagram of the arrangement of touch electrodes in the touch layer. Figure 3 yes Figure 2 The enlarged structural diagram of an implementation method of the middle A area, Figure 4 yes Figure 3 The enlarged structural diagram of the first implementation mode in the middle B area, Figure 5 yes Figure 4 An enlarged structural diagram of the first implementation method in the middle C area.

[0039] In this embodiment, the touch display panel 100 includes a substrate 10 and a touch layer 20 disposed on the substrate 10 .

[0040] In some embodiments, the substrate 10 may be a flexible substrate or a rigid substrate. In some specific embodiments, the substrate 10 may be a polymer substrate, a plastic substrate, or an ultra-thin glass substrate. In other specific embodiments, the substrate 10 may be a glass substrate. This application does not limit this.

[0041] In this embodiment, the touch layer 20 includes a first electrode 21 and a second electrode 22 .

[0042] The touch layer 20 includes a metal grid formed by a plurality of metal wires 40 intersecting each other, and the first electrode 21 and the second electrode 22 are obtained by cutting some of the metal wires 40 in the entire metal grid.

[0043] The first electrode 21 and the second electrode 22 are both touch electrodes.

[0044] In some implementations, the first electrode 21 is a driving electrode, and the second electrode 22 is a sensing electrode. In other implementations, the first electrode 21 may be a sensing electrode, and the second electrode 22 may be a driving electrode, which is not limited in the present application.

[0045] In this embodiment, the first electrode 21 and the second electrode 22 intersect and are insulated from each other.

[0046] The first electrode 21 includes a plurality of electrically connected first sub-electrodes 210, and the second electrode 22 includes a plurality of electrically connected second sub-electrodes 220. The plurality of first sub-electrodes 210 in the first electrode 21 are arranged at intervals in the vertical direction, and the plurality of second sub-electrodes 220 in the second electrode 22 are arranged at intervals in the horizontal direction. The first electrode 21 passes between two adjacent second sub-electrodes 220, and the second electrode 22 passes between two adjacent first sub-electrodes 210.

[0047] In some embodiments, two adjacent first sub-electrodes 210 are connected via a connecting portion 211 to form an integrated structure, and two adjacent second sub-electrodes 220 are electrically connected via a connecting bridge 221 .

[0048] The connection portion 211 is disposed in the same layer as the first sub-electrode 210 and the second sub-electrode 220 , and the connection bridge 221 is disposed in the bridge layer so that adjacent first sub-electrodes 210 and second sub-electrodes 220 are insulated from each other.

[0049] In this embodiment, a break 30 is provided on the metal line 40 at the boundary section between the first sub-electrode 210 and the second sub-electrode 220. The break 30 extends along a straight line according to the shape of the touch pattern.

[0050] In this embodiment, the fracture 30 includes two cross sections and two openings.

[0051] In this embodiment, the break 30 is provided with a shielding portion, the shielding portion covers the orthographic projection of the break 30 opening on the metal wire along the first direction x, and the first direction x is perpendicular to the extension direction y of the metal wire where the break 30 is located.

[0052] In some embodiments, the shielding portion includes two sections, which are tilted at an angle to the extension direction y of the metal wire 40 , and whose orthographic projections in the first direction x respectively cover the orthographic projections of the two openings in the first direction x.

[0053] In some embodiments, the two angles formed between the two cross sections and the extension direction y of the metal wire 40 are both acute angles, wherein the two angles formed between the two cross sections and the extension direction y of the metal wire are both greater than or equal to 30° and less than or equal to 60°.

[0054] In some embodiments, the two sections are arranged in parallel so that the two angles formed between the two sections and the extension direction y of the metal wire 40 are equal. In other embodiments, the two sections are arranged in non-parallel so that the two angles formed between the two sections and the metal wire 40 are not equal, which is not limited in the present application.

[0055] In some specific embodiments, the two angles formed between the two sections and the extension direction y of the metal wire 40 are equal and both are 45°. In other specific embodiments, the angle formed between one section and the extension direction y of the metal wire 40 is 40°, and the angle formed between the other section and the extension direction y of the metal wire 40 is 50°. In some other specific embodiments, the angle formed between one section and the extension direction y of the metal wire 40 is 30°, and the angle formed between the other section and the extension direction y of the metal wire 40 is 60°, which is not limited in the present application.

[0056] like Figure 5As shown, the two sections include a first section 31 and a second section 32, and the two openings include a first opening 301 and a second opening 302. The first section 31 is located on the metal wire segment on the left side of the break 30, and the second section 32 is located on the metal wire segment on the right side of the break 30. The first section 31 and the second section 32 are arranged in parallel. The angle a formed between the first section 31 and the extension direction y of the metal wire 40 is 45°, and the angle b formed between the second section 32 and the extension direction y of the metal wire 40 is 45°. Among them, the orthographic projection of the first section 31 in the first direction x covers the orthographic projection of the second opening 302 in the first direction x, and the orthographic projection of the second section 32 in the first direction x covers the orthographic projection of the first opening 301 in the first direction x.

[0057] The opening lengths of the first opening 301 and the second opening 302 are both equal to the width of the metal line 40 .

[0058] It can be understood that when the angle a and the angle b formed between the first section 31 and the second section 32 and the extension direction y of the metal wire 40 are both 45°, and the opening lengths of the first opening 301 and the second opening 302 are both equal to the width of the metal wire 40, the orthographic projection of the first section 31 in the first direction x just covers the orthographic projection of the second opening 302 in the first direction x, and the orthographic projection of the second section 32 in the first direction x just covers the orthographic projection of the first opening 301 in the first direction x.

[0059] It can be understood that when light is incident on the second opening 302 along the positive direction of the first direction x (see FIG. Figure 5 The first cross section 31 can reflect the incoming light, so that the cross section 30 has a reflective surface on the side of the second opening 302. Similarly, when light is incident on the first opening 301 along the negative direction of the first direction x (see the attached Figure 5 The second section 32 can reflect the incoming light, so that the break 30 has a reflective surface on the side of the first opening 301.

[0060] It can be understood that by making the orthographic projections of the first section 31 and the second section 32 included in the shielding portion in the first direction x respectively cover the orthographic projections of the second opening 302 and the first opening 301 along the first direction, the light irradiated from the second opening 302 can be reflected through the first section 31, and the light irradiated from the first opening 301 can be reflected through the second section 32, so as to form reflection at the break 30 as well, thereby effectively reducing the break shadow and further improving the display effect of the touch display panel 100.

[0061] See also Figure 6 , Figure 6 yes Figure 4An enlarged structural diagram of the second embodiment of the middle C area. In this embodiment, the two sections include a first section 31 and a second section 32, and the two openings include a first opening 301 and a second opening 302. The first section 31 is located on the metal wire segment on the left side of the break 30, and the second section 32 is located on the metal wire segment on the right side of the break 30, and the first section 31 and the second section 32 are arranged non-parallel. The angle a formed between the first section 31 and the extension direction y of the metal wire 40 is 30°, and the angle b formed between the second section 32 and the extension direction y of the metal wire 40 is 45°. Among them, the orthographic projection of the first section 31 in the first direction x covers the orthographic projection of the second opening 302 in the first direction x, and the orthographic projection of the second section 32 in the first direction x covers the orthographic projection of the first opening 301 in the first direction x.

[0062] The opening length of the first opening 301 is smaller than the width of the metal line 40 , and the opening length of the second opening 302 is larger than the width of the metal line 40 .

[0063] It can be understood that when the angle a formed between the first section 31 and the extension direction y of the metal wire 40 is limited to 30°, the angle b formed between the second section 32 and the extension direction y of the metal wire 40 is limited to 45°, and the opening length of the first opening 301 is less than the width of the metal wire 40, the opening length of the second opening 302 must fall within the range of the orthographic projection of the first section 31 in the first direction x, and the opening length of the first opening 301 must also fall within the range of the orthographic projection of the second section 32 in the first direction x.

[0064] It can be understood that when light is incident on the second opening 302 along the positive direction of the first direction x (see FIG. Figure 6 The first cross section 31 can reflect the incoming light, so that the cross section 30 has a reflective surface on the side of the second opening 302. Similarly, when light is incident on the first opening 301 along the negative direction of the first direction x (see the attached Figure 6 The second section 32 can reflect the incoming light, so that the break 30 has a reflective surface on the side of the first opening 301.

[0065] See also Figure 7 and Figure 8 , Figure 7 yes Figure 3 The enlarged structural diagram of the second implementation mode in the middle B area, Figure 8 yes Figure 7 The enlarged structural diagram of the first implementation mode in the D area.

[0066] In this embodiment, the two sections include a first section 31 and a second section 32, the two openings include a first opening 301 and a second opening 302, and the shielding portion includes a first protruding portion 310 formed on a side of the first section 31 close to the first opening 301, and a second protruding portion 320 formed on a side of the second section 32 close to the second opening 302.

[0067] In this embodiment, the orthographic projection of the first extending portion 310 in the first direction x is connected to or partially overlapped with the orthographic projection of the second extending portion 320 in the first direction x to cover the orthographic projections of the first opening 301 and the second opening 302 in the first direction x.

[0068] In some embodiments, Figure 7 and Figure 8 As shown, the orthographic projection of the first extension portion 310 in the first direction x covers most of the orthographic projection of the second opening 302 in the first direction x, and the orthographic projection of the second extension portion 320 in the first direction x covers most of the orthographic projection of the first opening 301 in the first direction x, that is, the orthographic projection of the first extension portion 310 in the first direction x partially overlaps with the orthographic projection of the second extension portion 320 in the first direction x, so as to cover the orthographic projections of the first opening 301 and the second opening 302 in the first direction x.

[0069] In some other embodiments, the orthographic projection of the first extension portion 310 in the first direction x is exactly connected to the orthographic projection of the second extension portion 320 in the first direction x (not shown), and may also just cover the orthographic projections of the first opening 301 and the second opening 302 in the first direction x.

[0070] The first extending portion 310 and the second extending portion 320 are formed when the fracture 30 is cut, and the material of the first extending portion 310 and the second extending portion 320 is consistent with the material of the metal wire 40 .

[0071] In some embodiments, the first section 31 includes adjacent first and second side surfaces, the first side surface is perpendicular to the extension direction y of the metal wire 40, the second side surface is parallel to the extension direction y of the metal wire 40, and the second side surface is also a side surface of the first extension portion 310 close to the second opening 302. The second section 32 includes adjacent third and fourth side surfaces, the third side surface is perpendicular to the extension direction y of the metal wire 40, the fourth side surface is parallel to the extension direction y of the metal wire 40, and the third side surface is also a side surface of the second extension portion 320 close to the first opening 301.

[0072] In some embodiments, the first extending portion 310 and the second extending portion 320 are both in the shape of narrow strips.

[0073] In some specific embodiments, Figure 8As shown, the first extension portion 310 and the second extension portion 320 are both narrow and long rectangles, the connection between the first extension portion 310 and the first section 31 is L-shaped, and the connection between the second extension portion 320 and the second section 32 is L-shaped. In other specific embodiments, if the angle formed between the first side surface of the first section 31 and the metal wire 40 is an acute angle, the first extension portion 310 is a narrow and long trapezoid.

[0074] In some embodiments, the length of the first extension portion 310 is equal to the length of the second extension portion 320. In other embodiments, the length of the first extension portion 310 is less than or greater than the length of the second extension portion 320, which is not limited in the present application.

[0075] It can be understood that when light is incident on the second opening 302 along the positive direction of the first direction x (see FIG. Figure 8 302), the first side surface of the first section 31 (the side surface of the first extension 310 close to the second opening 302) can reflect the incoming light, so that the section 30 has a reflective surface on the side of the second opening 302. Similarly, when light is incident on the first opening 301 along the negative direction of the first direction x (see the attached Figure 8 ), the third side surface of the second section 32 (the side surface of the second extension portion 320 close to the first opening 301) can reflect the incoming light, so that the section 30 has reflective light on the side of the first opening 301.

[0076] It can be understood that by making the orthographic projection of the first extending portion 310 in the first direction x cover the orthographic projection of the second opening 302 in the first direction x, and making the orthographic projection of the second extending portion 320 in the first direction x cover the orthographic projection of the first opening 301 in the first direction x, the light irradiated from the second opening 302 can be reflected through the first extending portion 310, and the light irradiated from the first opening 301 can be reflected through the second extending portion 320, so as to form reflection at the break 30 in the same way, thereby effectively reducing the break shadow and then improving the display effect of the touch display panel 100.

[0077] In this embodiment, the shielding portion includes at least one shielding member disposed at at least one opening, and the orthographic projection of the shielding member in the first direction x covers the orthographic projection of the opening in the first direction x.

[0078] In some embodiments, shielding members are disposed at both openings of the fracture 30 . The shielding members are disposed outside the metal wire 40 and are not connected to the metal wire 40 to be insulated from the metal wire 40 .

[0079] In some other embodiments, a shielding member is disposed at only one of the openings, and the shielding member is disposed outside the metal wire 40 and is not connected to the metal wire, which is not limited in the present application.

[0080] In some embodiments, the length extension direction of the shielding member is parallel to the extension direction y of the metal wire 40 .

[0081] For some specific implementations, please refer to Fig. 9 and Fig.10 , Fig. 9 yes Figure 3 The enlarged structural diagram of the third implementation mode in the middle B area, Fig.10 yes Fig. 9 An enlarged structural diagram of the first implementation method in the middle E area.

[0082] In this embodiment, the two sections include a first section 31 and a second section 32, and the two openings include a first opening 301 and a second opening 302. A first shielding member 311 is provided at the first opening 301, and a second shielding member 321 is provided at the second opening 302. The first shielding member 311 and the second shielding member 321 are both provided outside the metal wire 40 and are not connected to the metal wire 40. The orthographic projection of the first shielding member 311 in the first direction x covers the orthographic projection of the first opening 301 in the first direction x, and the orthographic projection of the second shielding member 321 in the first direction x covers the orthographic projection of the second opening 302 in the first direction x. The length extension direction of the first shielding member 311 and the second shielding member 321 is parallel to the extension direction y of the metal wire 40.

[0083] It can be understood that when light is incident on the second opening 302 along the positive direction of the first direction x (see FIG. Fig.10 The second shielding member 321 can reflect the incoming light, so that the break 30 has a reflective surface on the side of the second opening 302. Similarly, when light is incident on the first opening 301 along the negative direction of the first direction x (see the attached Fig.10 The first shielding member 311 can reflect the incoming light, so that the break 30 has a reflective surface on the side of the first opening 301.

[0084] It can be understood that by making the orthographic projection of the first blocking member 311 in the first direction x cover the orthographic projection of the first opening 301 in the first direction x, and making the orthographic projection of the second blocking member 321 in the first direction x cover the orthographic projection of the second opening 302 in the first direction x, the light irradiated from the first opening 301 can be reflected through the first blocking member 311, and the light irradiated from the second opening 302 can be reflected through the second blocking member 321, so as to form reflection at the break 30 in the same way, thereby effectively reducing the break shadow and then improving the display effect of the touch display panel 100.

[0085] In some embodiments, the metal line 40 includes a first surface, a second surface, and two side walls connecting the first surface and the second surface, and the first surface is disposed close to the substrate 10. The angles formed by the two side walls and the first surface are both obtuse angles.

[0086] In some embodiments, the angle formed by the sidewall and the first surface is greater than or equal to 120° and less than or equal to 150°. In other embodiments, the angle formed by the sidewall and the first surface is greater than or equal to 130° and less than or equal to 140°. In some specific embodiments, the angle formed by the sidewall and the first surface is 120°. In other specific embodiments, the angle formed by the sidewall and the first surface is 135°. In still other specific embodiments, the angle formed by the sidewall and the first surface is 150°, which is not limited in the present application.

[0087] Please refer to Fig.11 and Fig.12 , Fig.11 yes Figure 5 Schematic diagram of the metal wire cut along the AA line. Fig.12 yes Figure 5 Schematic diagram of the cross section of the metal wire along line BB.

[0088] In this embodiment, the metal wire 40 includes a first surface 41, a second surface 42 and two side walls 43 connecting the first surface 41 and the second surface 42. The first surface 41 is disposed close to the substrate 10. The angles c and d formed by the two side walls 43 and the first surface 41 are both obtuse angles.

[0089] It can be understood that setting the side wall 43 of the metal wire 40 as a downward slope can make the light reflected from the side wall 43 also point downward, avoiding the reflected light from being directly reflected to the human eye, thereby greatly reducing the intensity of the reflected light and effectively reducing the fracture shadow.

[0090] In some embodiments, the two angles formed by the two cross sections of the fracture 30 and the first surface 41 are both obtuse angles, wherein the two angles formed by the two cross sections and the first surface 41 are both greater than or equal to 120° and less than or equal to 150°.

[0091] In some embodiments, the two angles formed by the two sections and the first surface 41 are equal. In some specific embodiments, the angles formed by the two sections and the first surface 41 are both 135°. Fig.12 As shown, the angles formed between the first section 31 and the second section 32 and the first surface 41 are both 135°.

[0092] In some other specific embodiments, the angle formed between one section and the first surface 41 is 120°, and the angle formed between the other section and the first surface 41 is 150°. In some other specific embodiments, the angle formed between one section and the first surface 41 is 130°, and the angle formed between the other section and the first surface 41 is 140°, which is not limited in the present application.

[0093] Correspondingly, the present application provides a method for preparing a touch display panel.

[0094] Specifically, see Fig.13 , Fig.13 1 is a schematic diagram of a process for preparing a touch display panel of the present application. In this embodiment, the preparation method includes:

[0095] S11: Obtain a substrate and make an insulating layer on the substrate.

[0096] In this embodiment, a transparent insulating layer is firstly formed on the substrate, and the thickness of the insulating layer is equal to the thickness of the metal wire to be formed.

[0097] In some embodiments, the insulating layer has a thickness of 400 nm.

[0098] S12: etching the insulating layer to form a groove; wherein the angles formed between the two side walls of the groove and the substrate are both obtuse angles.

[0099] In this embodiment, the angle formed by the two side walls of the groove and the substrate is the angle formed by the two side walls of the metal wire to be manufactured later and the substrate.

[0100] In some embodiments, the angle formed between the two side walls of the groove and the substrate is greater than or equal to 120° and less than or equal to 150°.

[0101] In some other embodiments, the angle formed between the two side walls of the groove and the substrate is greater than or equal to 130° and less than or equal to 140°.

[0102] In some specific embodiments, the angles formed by the two side walls of the groove and the substrate are both 120°. In other specific embodiments, the angles formed by the two side walls of the groove and the substrate are both 135°. In still other specific embodiments, the angles formed by the two side walls of the groove and the substrate are both 150°, which is not limited in the present application.

[0103] S13: vapor-depositing a metal layer on the insulating layer, and removing the remaining metal layer outside the groove to form a metal grid.

[0104] In this embodiment, a metal layer is evaporated on the insulating layer to define the shape of the metal wire through the shape of the insulating layer groove, so that the angle between the side wall of the metal wire and the lower surface is an obtuse angle, and the inclined surface of the side wall of the metal wire faces downward. Finally, the remaining metal layer on the insulating layer outside the groove is removed to form a metal grid.

[0105] S14: forming a touch layer based on the metal grid.

[0106] In this embodiment, the touch layer is obtained by cutting part of the metal wires in the entire metal grid.

[0107] The touch layer includes a first electrode and a second electrode, both of which are touch electrodes, and the first electrode and the second electrode intersect and are insulated from each other.

[0108] In some implementations, the first electrode is a driving electrode and the second electrode is a sensing electrode. In other implementations, the first electrode may be a sensing electrode and the second electrode may be a driving electrode, which is not limited in the present application.

[0109] In this embodiment, the first electrode includes a plurality of electrically connected first sub-electrodes, and the second electrode includes a plurality of electrically connected second sub-electrodes. The plurality of first sub-electrodes in the first electrode are arranged at intervals in the vertical direction, and the plurality of second sub-electrodes in the second electrode are arranged at intervals in the horizontal direction. The first electrode passes between two adjacent second sub-electrodes, and the second electrode passes between two adjacent first sub-electrodes.

[0110] In some embodiments, two adjacent first sub-electrodes are connected to form an integrated structure through a connecting portion, and two adjacent second sub-electrodes are electrically connected through a connecting bridge. The connecting portion is disposed on the same layer as the first sub-electrode and the second sub-electrode, and the connecting bridge is disposed on the bridge layer to insulate the adjacent first sub-electrode from the second sub-electrode.

[0111] S15: forming a fracture on at least a portion of the metal wires of the metal grid, and making the fracture include two cross sections and two openings.

[0112] In this embodiment, a break is formed on the metal wire at the boundary section between the first sub-electrode and the second sub-electrode, wherein the break extends along a straight line according to the shape of the touch pattern.

[0113] S16: forming a shielding portion at the fracture, and making the shielding portion cover the orthographic projection of the opening of the fracture along the first direction, wherein the first direction is perpendicular to the extension direction of the metal wire where the fracture is located.

[0114] In some embodiments, the shielding portion includes two sections, and the two sections are tilted to form an angle with the metal wire so that the orthographic projections along the first direction respectively cover the orthographic projections of the two openings along the first direction.

[0115] In other embodiments, the two sections include a first section and a second section, the two openings include a first opening and a second opening, and the shielding portion includes a first extension portion extending from a side of the first section close to the first opening, and a second extension portion formed from a side of the second section close to the second opening.

[0116] In some further embodiments, the shielding portion includes at least one shielding member disposed at the at least one opening, and an orthographic projection of the shielding member along the first direction covers an orthographic projection of the opening along the first direction.

[0117] Correspondingly, the present application provides a touch display device, comprising any one of the above-mentioned touch display panels.

[0118] Different from the related art, the present application sets a shielding part at the fracture, and makes the shielding part's orthographic projection along the first direction cover the orthographic projection of the two openings along the first direction respectively, so that the shielding part can reflect the light irradiated from the corresponding opening, so as to also form a reflection at the fracture, thereby effectively reducing the fracture shadow, and then improving the display effect of the touch display panel. In addition, by setting the side wall of the metal wire as a downward inclined surface, the light reflected from the side wall can also be directed downward, avoiding the reflected light from being directly reflected to the human eye, so as to greatly reduce the intensity of the reflected light, thereby further reducing the fracture shadow, and then further improving the display effect of the touch display panel.

[0119] 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 present application specification and drawings, or directly or indirectly used 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: include: A substrate and a touch layer disposed on one side of the substrate; The touch layer includes a patterned touch electrode layer, the touch electrode layer includes a plurality of touch electrodes, the touch electrodes include a plurality of electrically connected metal grids, at least some of the metal wires of the metal grids are provided with fractures; the fractures include two cross sections and two openings; The fracture is provided with a shielding portion, the shielding portion's orthographic projection on the metal wire along a first direction covers the orthographic projection of the fracture opening on the metal wire along the first direction, and the first direction is perpendicular to the extension direction of the metal wire where the fracture is located.

2. The touch display panel according to claim 1, characterized in that: The shielding portion includes two sections, the two sections are tilted in a manner of forming an angle with the extension direction of the metal wire, and the orthographic projections of the two sections along the first direction respectively cover the orthographic projections of the two openings in the first direction; Preferably, the two angles between the two cross sections and the extension direction of the metal wire are both acute angles; Preferably, the two angles between the two cross sections and the extension direction of the metal wire are both greater than or equal to 30° and less than or equal to 60°; Preferably, the two sections are arranged in parallel so that the two angles between the two sections and the extension direction of the metal wire are equal.

3. The touch display panel according to claim 1, characterized in that: The two sections include a first section and a second section, and the two openings include a first opening and a second opening; the shielding portion includes a first extension portion extending from a side of the first section close to the first opening, and a second extension portion extending from a side of the second section close to the second opening; The orthographic projection of the first extension portion in the first direction is connected to or partially overlapped with the orthographic projection of the second extension portion in the first direction, so as to cover the orthographic projections of the first opening and the second opening in the first direction; Preferably, the first extension portion and the second extension portion are both in the shape of narrow strips; Preferably, the length of the first protruding portion is equal to the length of the second protruding portion.

4. The touch display panel according to claim 1, characterized in that: The shielding portion includes at least one shielding member disposed at at least one of the openings, and an orthographic projection of the shielding member in the first direction covers orthographic projections of two of the openings in the first direction.

5. The touch display panel according to claim 4, characterized in that: The shielding member is disposed at each of the two openings, and the shielding member is disposed outside the metal wire and is not connected to the metal wire; Preferably, the length extension direction of the shielding member is parallel to the extension direction of the metal wire.

6. The touch display panel according to claim 4, characterized in that: The shielding member is disposed at only one of the openings, and the shielding member is disposed outside the metal wire and is not connected to the metal wire.

7. The touch display panel according to claim 1, characterized in that: The metal wire includes a first surface, a second surface and two side walls connecting the first surface and the second surface, and the first surface is arranged close to the substrate; wherein the angles formed by the two side walls and the first surface are both obtuse angles.

8. The touch display panel according to claim 7, characterized in that: The angle formed by the side wall and the first surface is greater than or equal to 120° and less than or equal to 150°; Preferably, the angle formed by the side wall and the first surface is greater than or equal to 130° and less than or equal to 140°.

9. A method for preparing a touch display panel, characterized in that: include: Obtaining a substrate, and forming an insulating layer on the substrate; The insulating layer is etched to form a groove, wherein the angles formed between the two side walls of the groove and the substrate are both obtuse angles; Vapor-depositing a metal layer on the insulating layer and removing the remaining metal layer outside the groove to form a metal grid; forming a touch layer based on the metal grid; Forming a fracture on at least a portion of the metal wires of the metal grid, and making the fracture include two cross sections and two openings; A shielding portion is formed at the fracture, and the orthographic projection of the shielding portion along a first direction covers the orthographic projection of the opening of the fracture in the first direction, wherein the first direction is perpendicular to the extending direction of the metal wire where the fracture is located.

10. A touch display device, characterized in that: It comprises the touch display panel as claimed in any one of claims 1 to 8.

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