Touch display panel and manufacturing method thereof, and display device

Abstract

The present application provides a touch display panel and a manufacturing method thereof, and a display device. The touch display panel includes a display substrate and a touch substrate. The touch substrate includes a base, a plurality of touch drive electrodes and a plurality of touch sensing electrodes located on a side of the base away from the display substrate; a first light shielding layer is provided on a side of the touch drive electrode close to the base, and the orthographic projection of the first light shielding layer on the display substrate overlaps at least partially with the orthographic projection of the touch drive electrode on the display substrate; and / or a second light shielding layer is provided on a side of the touch sensing electrode close to the base, and the orthographic projection of the second light shielding layer on the display substrate overlaps at least partially with the orthographic projection of the touch sensing electrode on the display substrate. By providing a light shielding layer under the touch drive electrode and / or the touch sensing electrode, when the touch display panel displays a black and white chessboard picture, the brightness of the black grid caused by the reflection of the metal electrode can be avoided, thereby avoiding the impact on the evaluation of the display quality.

Description

Technical Field

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

[0002] In order to improve the performance and quality of the display, during the production process, it is necessary to test and determine the display's performance indicators such as afterimage level, resolution, brightness, contrast, and color gamut. During the test, the display can be displayed in a black and white checkerboard pattern to test and determine the display quality.

[0003] However, in the existing display panel with touch function, when displaying a black and white chessboard picture, the brightness of the black grid area is too bright, which does not meet the requirements and affects the judgment of the display quality. Summary of the invention

[0004] In view of the shortcomings of the existing methods, the present application proposes a touch display panel and a manufacturing method thereof, and a display device, so as to solve the problem in the prior art that when the touch display panel displays a black and white chessboard image, the brightness of the black grid area is too bright, which affects the display quality judgment.

[0005] In a first aspect, an embodiment of the present application provides a touch display panel, including:

[0006] Display substrate;

[0007] A touch control substrate, arranged on the light emitting surface side of the display substrate, comprising a base, a plurality of touch control driving electrodes and a plurality of touch control sensing electrodes located on a side of the base away from the display substrate, wherein the touch control driving electrodes and the touch control sensing electrodes are insulated and cross-arranged;

[0008] A first light shielding layer is provided on a side of the touch drive electrode close to the substrate, and an orthographic projection of the first light shielding layer on the display substrate at least partially overlaps with an orthographic projection of the touch drive electrode on the display substrate; and / or a second light shielding layer is provided on a side of the touch sensing electrode close to the substrate, and an orthographic projection of the second light shielding layer on the display substrate at least partially overlaps with an orthographic projection of the touch sensing electrode on the display substrate.

[0009] Optionally, the touch substrate includes a first light shielding layer, a first planar layer, the touch driving electrode, an insulating layer, a second light shielding layer, a second planar layer, the touch sensing electrode and a third planar layer which are sequentially stacked on a side of the base away from the display substrate.

[0010] Optionally, the first light-shielding layer and the second light-shielding layer are arranged on the same layer.

[0011] Optionally, the touch substrate comprises a first flat layer, the touch driving electrode, an insulating layer, the touch sensing electrode and a second flat layer which are sequentially stacked on a side of the base away from the display substrate;

[0012] The first light shielding layer and the second light shielding layer are located on a side of the first planar layer close to the substrate.

[0013] Optionally, the touch control substrate comprises a first flat layer arranged on a side of the base close to the display substrate, and the touch control driving electrode, the insulating layer, the touch control sensing electrode and the second flat layer are sequentially stacked and arranged on a side of the base away from the display substrate;

[0014] The first light shielding layer and the second light shielding layer are located on a side of the first planar layer close to the substrate.

[0015] Optionally, the touch substrate further comprises an optical adhesive layer, a refractive buffer layer and a protective layer which are sequentially stacked and arranged on a side of the touch sensing electrode away from the substrate;

[0016] The refractive index of the refractive buffer layer is smaller than the refractive index of the protective layer, and the refractive index of the refractive buffer layer is greater than the refractive index of the optical adhesive layer.

[0017] Optionally, the display substrate comprises a substrate, an organic light-emitting device and a polarizer which are sequentially arranged along a light emitting direction, and the polarizer and the base of the touch substrate are connected via an optical adhesive layer.

[0018] Optionally, the material of the substrate includes cycloolefin polymer or acrylic.

[0019] Optionally, a side of the touch drive electrode close to the substrate is coated with a shading material, and an orthographic projection of the shading material on the substrate overlaps with an orthographic projection of the touch drive electrode on the substrate; and / or a side of the touch sensing electrode close to the substrate is coated with a shading material, and an orthographic projection of the shading material on the substrate overlaps with an orthographic projection of the touch sensing electrode on the substrate.

[0020] In a second aspect, an embodiment of the present application provides a display device, including the touch display panel provided in the embodiment of the present application.

[0021] In a third aspect, an embodiment of the present application provides a method for manufacturing a touch display panel, comprising:

[0022] Providing a display substrate;

[0023] A touch substrate is manufactured on the light emitting surface side of the display substrate, wherein the touch substrate comprises a base, and a plurality of cross-insulated touch driving electrodes and touch sensing electrodes located on a side of the base away from the display substrate; the touch substrate further comprises a first light shielding layer and / or a second light shielding layer;

[0024] Among them, the first light shielding layer is located on a side of the touch driving electrode close to the substrate, and its orthographic projection on the display substrate at least partially overlaps with the orthographic projection of the touch driving electrode on the display substrate; the second light shielding layer is located on a side of the touch sensing electrode close to the substrate, and its orthographic projection on the display substrate at least partially overlaps with the orthographic projection of the touch sensing electrode on the display substrate.

[0025] Optionally, manufacturing a touch substrate on the light emitting surface of the display substrate includes:

[0026] providing a substrate;

[0027] forming a first light shielding layer on one side of the substrate;

[0028] Making a touch driving electrode on a side of the first light shielding layer away from the substrate;

[0029] A second light shielding layer is formed on a side of the touch driving electrode away from the first light shielding layer;

[0030] A touch sensing electrode is fabricated on a side of the second light shielding layer away from the touch driving electrode.

[0031] Optionally, manufacturing a touch substrate on the light emitting surface of the display substrate includes:

[0032] providing a substrate;

[0033] Making a first light-shielding layer and a second light-shielding layer on one side of the substrate;

[0034] Making a touch driving electrode on a side of the first light shielding layer and the second light shielding layer away from the substrate;

[0035] A touch sensing electrode is fabricated on a side of the touch driving electrode away from the display substrate.

[0036] Optionally, manufacturing a touch substrate on the light emitting surface of the display substrate includes:

[0037] providing a substrate;

[0038] Forming a first light shielding layer and a second light shielding layer on a side of the base close to the display substrate;

[0039] Making a touch driving electrode on a side of the substrate away from the first light shielding layer and the second light shielding layer;

[0040] A touch sensing electrode is fabricated on a side of the touch driving electrode away from the substrate.

[0041] The beneficial technical effects brought about by the technical solution provided by the embodiment of the present application include:

[0042] The touch display panel in the embodiment of the present application includes a display substrate and a touch substrate arranged on the light-emitting side of the display substrate, the touch substrate includes a base, a plurality of touch drive electrodes and a plurality of touch sensing electrodes located on the side of the base away from the display substrate, the touch drive electrodes and the touch sensing electrodes are insulated and cross-arranged; a first light shielding layer is provided on the side of the touch drive electrode close to the base, and the orthographic projection of the first light shielding layer on the display substrate overlaps at least partially with the orthographic projection of the touch drive electrode on the display substrate; and / or a second light shielding layer is provided on the side of the touch sensing electrode close to the base, and the orthographic projection of the second light shielding layer on the display substrate overlaps at least partially with the orthographic projection of the touch sensing electrode on the display substrate. By providing a light shielding layer under the touch drive electrode and / or the touch sensing electrode, when the touch display panel displays a black and white chessboard picture, the brightness of the black grid caused by the reflection of the metal electrode can be avoided, thereby avoiding the impact on the evaluation of the display quality.

[0043] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0045] Figure 1 It is a schematic diagram of the structure of a touch display panel in the prior art;

[0046] Figure 2 A schematic diagram of reflection occurring at the edge of a metal wire on a touch display panel in the prior art;

[0047] Figure 3 A schematic diagram of a display screen when the touch display panel displays a black and white chessboard;

[0048] Figure 4 A schematic diagram of the structure of a touch display panel provided in an embodiment of the present application;

[0049] Figure 5 A top view of a touch driving electrode and a touch sensing electrode;

[0050] Figure 6 A top view of the first shading layer and the second shading layer;

[0051] Figure 7 A schematic diagram of the structure of another touch display panel provided in an embodiment of the present application;

[0052] Figure 8 A schematic diagram of the structure of another touch display panel provided in an embodiment of the present application;

[0053] Fig. 9 A schematic diagram of the structure of another touch display panel provided in an embodiment of the present application;

[0054] Fig.10 A schematic diagram of the manufacturing process of a touch display panel provided in an embodiment of the present application;

[0055] Figures 11a to 11j A schematic diagram of the structure of different processes for manufacturing a first touch control substrate provided in an embodiment of the present application;

[0056] Figure 12a to Figure 12h A schematic diagram of a second method of manufacturing a touch control substrate according to an embodiment of the present application;

[0057] Figures 13a to 13h This is a schematic structural diagram of different processes for manufacturing a third touch control substrate provided in an embodiment of the present application.

[0058] In the figure:

[0059] 10-touch display panel; 11-display substrate; 110-light emitting surface; 12-touch substrate;

[0060] 111-substrate; 112-organic light emitting device; 113-polarizer;

[0061] 120 - substrate; 121 - first light shielding layer; 122 - second light shielding layer; 123 - touch driving electrode; 124 - touch sensing electrode;

[0062] 125a-first flat layer; 125b-second flat layer; 125c-third flat layer;

[0063] 126-light-shielding material; 127-optical adhesive layer; 128-insulating layer; 129a-refractive buffer layer; 129b-protective layer;

[0064] 1101-black grid area; 1102-white grid area. DETAILED DESCRIPTION

[0065] The present application is described in detail below, and examples of embodiments of the present application are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. In addition, if the detailed description of the known technology is unnecessary for the features of the present application shown, it will be omitted. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0066] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0067] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0068] The inventors of the present application have considered that when an existing touch display panel displays a black and white checkerboard, the reflection of light by the touch metal wires may cause the brightness of the black checkerboard area to be too bright, which may affect the judgment of the display quality.

[0069] Combination Figure 1 and Figure 2 As shown, in the existing touch display substrate, the touch substrate is arranged on the light emitting surface side of the display substrate. Figure 3 As shown in the figure, the brightness of the white grid area is relatively large. Since the touch driving electrodes and touch sensing electrodes are usually made of metal materials, the surface reflectivity of light is relatively high. When the light in the white grid area shines on the surface and edge of the touch driving electrode, or shines on the surface and edge of the touch sensing electrode, the light will be reflected to the black grid area, which will cause the brightness of the black grid area to be brighter, which does not meet the relevant specifications and affects the judgment of the display quality of the touch display panel.

[0070] The touch display panel and its manufacturing method, and the display device provided in the present application are intended to solve the above technical problems in the prior art.

[0071] The touch display panel and its manufacturing method and the display device provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0072] The present application embodiment provides a touch display substrate 10, such as Figure 4 As shown, including:

[0073] Display substrate 11;

[0074] The touch substrate 12 is arranged on the side of the light emitting surface 110 of the display substrate 11, and includes a base 120, a plurality of touch driving electrodes 123 and a plurality of touch sensing electrodes 124 located on the side of the base 120 away from the display substrate 11, and the touch driving electrodes 123 and the touch sensing electrodes 124 are insulated and cross-arranged;

[0075] Among them, a first light shielding layer 121 is provided on a side of the touch driving electrode 123 close to the substrate 120, and the orthographic projection of the first light shielding layer 121 on the display substrate 11 at least partially overlaps with the orthographic projection of the touch driving electrode 123 on the display substrate 11; and / or, a second light shielding layer 122 is provided on a side of the touch sensing electrode 124 close to the substrate 120, and the orthographic projection of the second light shielding layer 122 on the display substrate 11 at least partially overlaps with the orthographic projection of the touch sensing electrode 124 on the display substrate 11.

[0076] Specifically, the display substrate 11 and the touch substrate 12 are arranged opposite to each other, and the display substrate 11 has a light emitting surface 110. The light emitted by the display substrate 11 enables the touch display panel 10 to realize the display function. The touch substrate 12 is arranged on the side of the light emitting surface 110 of the display substrate 11. The touch substrate 12 includes a base 120, a plurality of touch driving electrodes 123 and a plurality of touch sensing electrodes 124. The base 120 fixes and supports each film layer in the touch substrate 12, and its material includes cycloolefin polymer or acrylic. While the base 120 has good light transmittance, it is also beneficial to reduce the weight of the touch display panel 10 due to its low density. The touch driving electrodes 123 and the touch sensing electrodes 124 are distributed in sequence along the light emitting direction of the display substrate 11. As shown in FIG. Figure 5 As shown, the touch driving electrodes 123 and the touch sensing electrodes 124 are insulated from each other and cross-arranged (in a grid shape). When a person's finger touches the touch substrate 12, the capacitance between the touch driving electrodes 123 and the touch sensing electrodes 124 changes, and the integrated circuit (not shown in the figure) in the touch display panel 10 detects the position of the finger according to the change in capacitance, thereby realizing the touch function.

[0077] By placing the touch driving electrode 123 on a side close to the substrate 120 ( Figure 4 A first shading layer 121 is provided on the lower side of the touch driving electrode 123, and the orthographic projection of the first shading layer 121 on the display substrate 11 is at least partially overlapped with the orthographic projection of the touch driving electrode 123 on the display substrate 11. When the display substrate 11 displays a black and white grid image, the light emitted from the white grid area 1102 can be blocked by the first shading layer 121, thereby reducing the light directly irradiating the touch driving electrode 123, thereby reducing the light reflected by the touch driving electrode 123 to the black grid area 1101, thereby avoiding the excessive brightness of the black grid area 1101 affecting the judgment of the display quality of the touch display panel 10.

[0078] Optionally, in the embodiment of the present application, on the side of the touch sensing electrode 124 close to the substrate 120 ( Figure 4 A second light shielding layer 122 is provided under the touch driving electrode 123 (below the touch sensing electrode 124), and the orthographic projection of the second light shielding layer 122 on the display substrate 11 at least partially overlaps with the orthographic projection of the touch sensing electrode 124 on the display substrate 11. By providing the second light shielding layer 122, the light emitted from the white grid area 1102 can be shielded by the second light shielding layer 122, reducing the light directly irradiated on the touch sensing electrode 124, thereby reducing the light reflected from the touch sensing electrode 124 to the black grid area 1101. It should be noted that the first light shielding layer 121 can be provided under the touch driving electrode 123 or the second light shielding layer 122 can be provided under the touch sensing electrode 124, or the first light shielding layer 121 and the second light shielding layer 122 can be provided at the same time to further reduce the light reflected to the black grid area 1101.

[0079] It should be noted that the first light shielding layer 121 has the same shape as the touch driving electrode 123 and has a corresponding position, and the second light shielding layer 122 has the same shape as the touch sensing electrode 124 and has a corresponding position. Figure 5 and Figure 6, the first light shielding layer 121 and the second light shielding layer 122 are arranged crosswise with each other (in a grid shape), so that the first light shielding layer 121 and the second light shielding layer 122 can shield the touch drive electrode 123 and the touch sensing electrode 124. The specific position and size of the first light shielding layer 121 and the second light shielding layer 122 can be determined according to actual conditions. Optionally, in an embodiment of the present application, the orthographic projection of the first light shielding layer 121 on the display substrate 11 completely overlaps with the orthographic projection of the touch drive electrode 123 on the display substrate 11; and / or, the orthographic projection of the second light shielding layer 122 on the display substrate 11 completely overlaps with the orthographic projection of the touch sensing electrode 124 on the display substrate 11. By making the first light shielding layer 121 and the second light shielding layer 122 completely overlap with the touch driving electrode 123 and the touch sensing electrode 124 respectively, the first light shielding layer 121 and the second light shielding layer 122 can block light to the greatest extent, which is beneficial to reduce the reflection of light by the touch driving electrode 123 and the touch sensing electrode 124, and avoid the brightness of the black grid area 1101 being too bright.

[0080] It should be noted that the positions of the first light shielding layer 121 and the second light shielding layer 122 can be adjusted and determined according to actual conditions. Figure 7 As shown, optionally, the touch substrate 12 includes a first light shielding layer 121, a first flat layer 125a, a touch driving electrode 123, an insulating layer 128, a second light shielding layer 122, a second flat layer 125b, a touch sensing electrode 124 and a third flat layer 125c, which are sequentially stacked on a side of the base 120 away from the display substrate 11.

[0081] Specifically, the first light shielding layer 121 is disposed on one side of the substrate 120 close to the first flat layer 125a ( Figure 7 The first flat layer 125a covers the upper side of the substrate 120 and the first light shielding layer 121, and the touch driving electrode 123 is arranged on one side of the first flat layer 125a close to the insulating layer 128 ( Figure 7The upper side of the first flat layer 125a in the middle), thereby reducing the distance between the first light shielding layer 121 and the touch driving electrode 123 in the light emitting direction (the spacing between the first light shielding layer 121 and the touch driving electrode 123 is less than the thickness of the first flat layer 125a), thereby improving the light shielding effect of the first light shielding layer 121 on the touch driving electrode 123. The second light shielding layer 122 is arranged on a side of the insulating layer 128 close to the second flat layer 125 b (the upper side of the insulating layer 128 in the figure), the second flat layer 125 b covers the insulating layer 128 and the second light shielding layer 122, and the touch sensing electrodes 124 are arranged on a side of the second flat layer 125 b away from the insulating layer 128 (the upper side of the second flat layer 125 b in the figure), thereby reducing the distance between the second light shielding layer 122 and the touch sensing electrodes 124 in the light emitting direction (the distance between the second light shielding layer 122 and the touch sensing electrodes 124 is less than the thickness of the second flat layer 125 b), thereby improving the light shielding effect of the second light shielding layer 122 on the touch sensing electrodes 124.

[0082] Optionally, in the embodiments of the present application, Figure 8 and Fig. 9 The first light shielding layer 121 and the second light shielding layer 122 are arranged in the same layer, that is, the first light shielding layer 121 and the second light shielding layer 122 are located in the same layer. During the manufacturing process of the touch display panel 10, the first light shielding layer 121 and the second light shielding layer 122 can be formed at the same time, thereby simplifying the manufacturing process.

[0083] When the first light shielding layer 121 and the second light shielding layer 122 are disposed on the same layer, the specific positions of the first light shielding layer 121 and the second light shielding layer 122 can be determined according to actual conditions. Figure 8 As shown, the touch substrate 12 includes a first flat layer 125a, a touch driving electrode 123, an insulating layer 128, a touch sensing electrode 124, and a second flat layer 125b which are sequentially stacked on a side of the substrate 120 away from the display substrate 11. The first light shielding layer 121 and the second light shielding layer 122 are located on a side of the first flat layer 125a close to the substrate 120. Specifically, the first light shielding layer 121 and the second light shielding layer 122 are arranged on a side of the substrate 120 away from the display substrate 11 ( Figure 8 The first flat layer 125a covers the substrate 120, the first light shielding layer 121 and the second light shielding layer 122. The touch driving electrode 123 is arranged on the side of the first flat layer 125a away from the substrate 120 ( Figure 8 The insulating layer 128 covers the first flat layer 125a and the touch driving electrodes 123, and the touch sensing electrodes 124 are arranged on a side of the insulating layer 128 away from the first flat layer 125a ( Figure 8 The upper side of the middle insulating layer 128).

[0084] In another specific embodiment, Fig. 9 As shown, the touch substrate 12 includes a first flat layer 125a disposed on a side of the substrate 120 close to the display substrate 11, and a touch driving electrode 123, an insulating layer 128, a touch sensing electrode 124 and a second flat layer 125b which are sequentially stacked and disposed on a side of the substrate 120 away from the display substrate 11. The first light shielding layer 121 and the second light shielding layer 122 are located on a side of the first flat layer 125a close to the substrate 120. Specifically, the first light shielding layer 121 and the second light shielding layer 122 are disposed on a side of the substrate 120 close to the display substrate 11 ( Fig. 9 The first flat layer 125a covers the substrate 120, the first light shielding layer 121 and the second light shielding layer 122, and the touch driving electrode 123 is arranged on the side of the substrate 120 away from the display substrate 11 ( Fig. 9 The insulating layer 128 covers the touch driving electrodes 123 and the substrate 120, and the touch sensing electrodes 124 are arranged on a side of the insulating layer 128 away from the display substrate 11 ( Fig. 9 The upper side of the middle insulating layer 128).

[0085] Optional, combined Figure 7 , Figure 8 and Fig. 9 In the embodiment of the present application, the touch substrate 12 further includes an optical adhesive layer 127, a refractive buffer layer 129a and a protective layer 129b which are sequentially stacked on the side of the touch sensing electrode 124 away from the substrate 120. The refractive index of the refractive buffer layer 129a is less than that of the protective layer 129b, and the refractive index of the refractive buffer layer 129a is greater than that of the optical adhesive layer 127. Specifically, the material of the refractive buffer layer 129a and the protective layer 129b includes transparent polyimide, the refractive index of the optical adhesive layer 127 may be 1.47, the refractive index of the protective layer 129b may be 1.55, and the refractive index of the refractive buffer layer 129a is between 1.47 and 1.55 (may be about 1.51). By providing the refractive buffer layer 129a between the optical adhesive layer 127 and the protective layer 129b, the portion of the light emitted from the white grid area 1102 that is refracted and irradiated to the black grid area 1101 can be reduced, thereby reducing the brightness of the black grid area 1101.

[0086] In the embodiments of the present application, Figure 7 , Figure 8 and Fig. 9 The display substrate 11 includes a substrate 111, an organic light-emitting device 112 and a polarizer 113 which are sequentially arranged along the light emitting direction (i.e., along the direction from the base 120 to the touch electrode), and the polarizer 113 and the touch substrate 12 are connected via an optical adhesive layer 127. Specifically, in a specific embodiment, Figure 8As shown, the first flat layer 125a is disposed on a side of the base 120 away from the display substrate 11 ( Figure 8 The substrate 120 of the touch substrate 12 and the polarizer 113 of the display substrate 11 are connected via an optical adhesive layer 127. In another specific embodiment, as Fig. 9 As shown, the first flat layer 125a is disposed on a side of the base 120 close to the display substrate 11 ( Fig. 9 The first flat layer 125a of the touch substrate 12 and the polarizer 113 of the display substrate 11 are connected by an optical adhesive layer 127. After the polarizer 113 is provided, the external ambient light can be prevented from being reflected by the display substrate 11 to the human eye, thereby improving the display quality.

[0087] Specifically, the display substrate 11 in the embodiment of the present application is an organic electroluminescent display substrate, and the organic light-emitting device 112 includes a driving device layer and a light-emitting layer. The driving device layer includes a pixel circuit composed of multiple thin film transistors, and the light-emitting layer includes a pixel definition layer and organic light-emitting devices of different colors. The specific setting method of the organic electroluminescent display substrate is similar to the prior art and will not be repeated here.

[0088] like Figure 7 As shown, optionally, in some embodiments of the present application, a side of the touch driving electrode 123 close to the substrate 120 is coated with a shading material 126, and the orthographic projection of the shading material 126 on the substrate 120 overlaps with the orthographic projection of the touch driving electrode 123 on the substrate 120; and / or, a side of the touch sensing electrode 124 close to the substrate 120 is coated with a shading material 126, and the orthographic projection of the shading material 126 on the substrate 120 overlaps with the orthographic projection of the touch sensing electrode 124 on the substrate 120. The shading material 126 can absorb part of the light irradiated on the metal wire and reduce the reflection of the light by the metal wire. By Figure 7 The light shielding material 126 ( Figure 7 The light reflection of the metal wire can be further reduced to reduce the brightness of the black grid area 1101. It is understandable that when the light shielding layer is coated on both the touch driving electrode 123 and the touch sensing electrode 124, the effect of preventing light reflection is best. It should be noted that in the embodiment of the present application, if Figure 7 As shown, a light shielding material 126 is also coated on the touch driving electrode 123 and the touch sensing electrode 124 to prevent external ambient light from irradiating the metal wire and then being reflected to the human eye to affect the display quality.

[0089] Based on the same inventive concept, the embodiment of the present application also provides a display device, which includes the touch display panel 10 provided in the embodiment of the present application. Since the display device includes the touch display panel 10 provided in the embodiment of the present application, the display device has the same beneficial effects as the touch display panel 10, which will not be described in detail here.

[0090] Based on the same inventive concept, the present application also provides a method for manufacturing a touch display panel 10. Fig.10 As shown, including:

[0091] S101, providing a display substrate 11;

[0092] S102, manufacturing a touch substrate 12 on a side of the light emitting surface 110 of the display substrate 11, the touch substrate 12 comprising a base 120, a plurality of cross-insulated touch driving electrodes 123 and touch sensing electrodes 124 located on a side of the base 120 away from the display substrate 11; the touch substrate 12 further comprises a first light shielding layer 121 and / or a second light shielding layer 122; wherein the first light shielding layer 121 is located on a side of the touch driving electrode 123 close to the base 120, and an orthographic projection of the first light shielding layer 121 on the display substrate 11 at least partially overlaps with an orthographic projection of the touch driving electrode 123 on the display substrate 11; and the second light shielding layer 122 is located on a side of the touch sensing electrode 124 close to the base 120, and an orthographic projection of the second light shielding layer 122 on the display substrate 11 at least partially overlaps with an orthographic projection of the touch sensing electrode 124 on the display substrate 11.

[0093] In the manufacturing method of the touch substrate 12 provided in the embodiment of the present application, a first light shielding layer 121 is provided on the side of the touch driving electrode 123 close to the substrate 120, and the orthographic projection of the first light shielding layer 121 on the display substrate 11 overlaps at least partially with the orthographic projection of the touch driving electrode 123 on the display substrate 11; and / or a second light shielding layer 122 is provided on the side of the touch sensing electrode 124 close to the substrate 120, and the orthographic projection of the second light shielding layer 122 on the display substrate 11 overlaps at least partially with the orthographic projection of the touch sensing electrode 124 on the display substrate 11. By providing a light shielding layer under the touch driving electrode 123 and / or the touch sensing electrode 124, when the touch display panel 10 displays a black and white chessboard picture, the brightness of the black grid caused by the reflection of the metal electrode can be avoided, thereby avoiding the impact on the evaluation of the display quality.

[0094] In a first specific implementation manner, in the embodiment of the present application, a touch control substrate 12 is manufactured on the side of the light emitting surface 110 of the display substrate 11, including:

[0095] Providing a substrate 120;

[0096] A first light shielding layer 121 is formed on one side of the substrate 120;

[0097] A touch driving electrode 123 is formed on a side of the first light shielding layer 121 away from the substrate 120 ;

[0098] A second light shielding layer 122 is formed on a side of the touch driving electrode 123 away from the first light shielding layer 121 ;

[0099] The touch sensing electrode 124 is formed on a side of the second light shielding layer 122 away from the touch driving electrode 123 .

[0100] The specific process of manufacturing the touch substrate 12 according to the first embodiment will be described in detail below with reference to the accompanying drawings.

[0101] like Fig.11a As shown, first, a substrate 120 is provided, and the material of the substrate 120 includes cycloolefin polymer or acrylic.

[0102] like Fig.11b As shown, next, a first light shielding layer 121 is formed on one side of the substrate 120. The first light shielding layer 121 can be formed by a patterning process. Specifically, the patterning process in the embodiment of the present application includes the coating, exposure, development, etching of photoresist, and removal of part or all of the photoresist.

[0103] like Fig.11c As shown, next, a first planar layer 125 a is formed on one side of the substrate 120 , and the first planar layer 125 a covers the surfaces of the substrate 120 and the first light shielding layer 121 .

[0104] like Fig.11d As shown, next, the touch driving electrode 123 is formed on the side of the first planar layer 125 a away from the substrate 120 by a patterning process.

[0105] like Fig.11e As shown, next, an insulating layer 128 is formed on a side of the touch driving electrode 123 away from the substrate 120 , and the insulating layer 128 covers the first planar layer 125 a and the touch driving electrode 123 .

[0106] like Fig.11f As shown, next, a second light shielding layer 122 is formed on a side of the insulating layer 128 away from the substrate 120 by a patterning process.

[0107] like Figure 11g As shown, next, a second planar layer 125 b is formed on a side of the insulating layer 128 away from the substrate 120 , and the second planar layer 125 b covers the insulating layer 128 and the second light shielding layer 122 .

[0108] like Fig.11hAs shown, next, a touch sensing electrode 124 is formed on a side of the second planar layer 125 b away from the substrate 120 by a patterning process, and the position of the touch sensing electrode 124 corresponds to the position of the second light shielding layer 122 .

[0109] like Fig.11i As shown, next, a third flat layer 125 c is formed on a side of the second flat layer 125 b away from the substrate 120 , and the third flat layer 125 c covers the touch sensing electrodes 124 .

[0110] like Fig.11j As shown, an optical adhesive layer 127 is then formed on the side of the third flat layer 125c away from the substrate 120, and then a protective layer 129b and a refractive buffer layer 129a are provided, and the refractive buffer layer 129a and the third flat layer 125c are connected through the optical adhesive layer 127 to complete the manufacturing of the touch substrate 12.

[0111] In a second specific implementation manner, in the embodiment of the present application, a touch control substrate 12 is manufactured on the side of the light emitting surface 110 of the display substrate 11, including:

[0112] Providing a substrate 120;

[0113] A first light shielding layer 121 and a second light shielding layer 122 are formed on one side of the substrate 120;

[0114] A touch driving electrode 123 is formed on a side of the first light shielding layer 121 and the second light shielding layer 122 away from the substrate 120 ;

[0115] The touch sensing electrode 124 is formed on a side of the touch driving electrode 123 away from the display substrate 11 .

[0116] The specific process of manufacturing the touch substrate 12 in the second embodiment will be described in detail below with reference to the accompanying drawings.

[0117] like Fig.12a As shown, a substrate 120 is first provided, and the material of the substrate 120 includes cycloolefin polymer or acrylic.

[0118] like Figure 12b As shown, next, a first light shielding layer 121 and a second light shielding layer 122 are formed on one side of the substrate 120 by a patterning process.

[0119] like Fig.12c As shown, next, a first planar layer 125 a is formed on the side of the first light shielding layer 121 and the second light shielding layer 122 away from the substrate 120 , and the first planar layer 125 a covers the first light shielding layer 121 and the second light shielding layer 122 .

[0120] like Fig.12dAs shown, next, a touch driving electrode 123 is formed on a side of the first planar layer 125 a away from the substrate 120 by a patterning process, and the position of the touch driving electrode 123 corresponds to the position of the first light shielding layer 121 .

[0121] like Fig.12e As shown, next, an insulating layer 128 is formed on a side of the first planar layer 125 a away from the substrate 120 , and the insulating layer 128 covers the touch driving electrodes 123 .

[0122] like Fig.12f As shown, next, the touch sensing electrode 124 is formed on the side of the insulating layer 128 away from the first planar layer 125 a by a patterning process, and the position of the touch sensing electrode 124 corresponds to the position of the second light shielding layer 122 .

[0123] like Figure 12g As shown, next, a second planar layer 125 b is formed on a side of the touch sensing electrode 124 away from the first planar layer 125 a , and the second planar layer 125 b covers the touch sensing electrode 124 .

[0124] like Figure 12h As shown, an optical adhesive layer 127 is then formed on the side of the second flat layer 125b away from the substrate 120, and then a protective layer 129b and a refractive buffer layer 129a are provided, and the refractive buffer layer 129a and the second flat layer 125b are connected through the optical adhesive layer 127 to complete the manufacturing of the touch substrate 12.

[0125] In a third specific implementation manner, in the embodiment of the present application, a touch control substrate 12 is manufactured on the side of the light emitting surface 110 of the display substrate 11, including:

[0126] Providing a substrate 120;

[0127] A first light shielding layer 121 and a second light shielding layer 122 are formed on a side of the base 120 close to the display substrate 11;

[0128] A touch driving electrode 123 is formed on a side of the substrate 120 away from the first light shielding layer 121 and the second light shielding layer 122 ;

[0129] The touch sensing electrode 124 is formed on a side of the touch driving electrode 123 away from the substrate 120 .

[0130] The specific process of manufacturing the touch substrate 12 in the second embodiment will be described in detail below with reference to the accompanying drawings.

[0131] like Fig.13a As shown, a substrate 120 is first provided, and the material of the substrate 120 includes cycloolefin polymer or acrylic.

[0132] like Fig.13bAs shown, next, a first light shielding layer 121 and a second light shielding layer 122 are formed on one side of the substrate 120 by a patterning process.

[0133] like Fig.13c As shown, next, a first planar layer 125 a is formed on the side of the first light shielding layer 121 and the second light shielding layer 122 away from the substrate 120 , and the first planar layer 125 a covers the first light shielding layer 121 and the second light shielding layer 122 .

[0134] like Fig.13d As shown, next, a touch driving electrode 123 is formed on a side of the substrate 120 away from the first light shielding layer 121 and the second light shielding layer 122 by a patterning process, and the position of the touch driving electrode 123 corresponds to the position of the first light shielding layer 121 .

[0135] like Fig.13e As shown, next, an insulating layer 128 is formed on a side of the touch driving electrode 123 away from the substrate 120 , and the insulating layer 128 covers the touch driving electrode 123 .

[0136] like Fig.13f As shown, next, a touch sensing electrode 124 is formed on a side of the insulating layer 128 away from the substrate 120 by a patterning process, and the position of the touch sensing electrode 124 corresponds to the position of the second light shielding layer 122 .

[0137] like Figure 13g As shown, next, a second flat layer 125 b is formed on a side of the touch sensing electrode 124 away from the substrate 120 , and the second flat layer 125 b covers the touch sensing electrode 124 .

[0138] like Fig.13h As shown, an optical adhesive layer 127 is then formed on the side of the second flat layer 125b away from the substrate 120, and then a protective layer 129b and a refractive buffer layer 129a are provided, and the refractive buffer layer 129a and the second flat layer 125b are connected through the optical adhesive layer 127 to complete the manufacturing of the touch substrate 12.

[0139] By applying the embodiments of the present application, at least the following beneficial effects can be achieved:

[0140] 1. The touch substrate 12 in the embodiment of the present application includes a substrate 120, a plurality of touch driving electrodes 123 and a plurality of touch sensing electrodes 124 located on a side of the substrate 120 away from the display substrate 11; a first light shielding layer 121 is provided on a side of the touch driving electrode 123 close to the substrate 120, and the orthographic projection of the first light shielding layer 121 on the display substrate 11 overlaps at least partially with the orthographic projection of the touch driving electrode 123 on the display substrate 11; and / or a second light shielding layer 122 is provided on a side of the touch sensing electrode 124 close to the substrate 120, and the orthographic projection of the second light shielding layer 122 on the display substrate 11 overlaps at least partially with the orthographic projection of the touch sensing electrode 124 on the display substrate 11. By providing a light shielding layer under the touch driving electrode 123 and / or the touch sensing electrode 124, when the touch display panel 10 displays a black and white chessboard picture, the brightness of the black grid can be avoided to be too bright due to the reflection of the metal electrode, thereby avoiding the impact on the evaluation of the display quality.

[0141] 2. By making the first light shielding layer 121 and the second light shielding layer 122 completely overlap with the touch drive electrode 123 and the touch sensing electrode 124 respectively, the first light shielding layer 121 and the second light shielding layer 122 can block light to the greatest extent, which is beneficial to reducing the reflection of light by the touch drive electrode 123 and the touch sensing electrode 124, and avoiding the brightness of the black grid area 1101 being too bright.

[0142] 3. In an embodiment of the present application, by arranging the first light-shielding layer 121 and the second light-shielding layer 122 in the same layer, that is, the first light-shielding layer 121 and the second light-shielding layer 122 are located in the same layer, the first light-shielding layer 121 and the second light-shielding layer 122 can be formed simultaneously during the manufacturing process of the touch display panel 10, thereby simplifying the manufacturing process.

[0143] 4. In the embodiment of the present application, the touch substrate 12 further includes an optical adhesive layer 127, a refractive buffer layer 129a and a protective layer 129b which are sequentially stacked on the side of the touch sensing electrode away from the substrate 120. The refractive index of the refractive buffer layer 129a is less than that of the protective layer 129b, and the refractive index of the refractive buffer layer 129a is greater than that of the optical adhesive layer 127. By providing the refractive buffer layer 129a between the optical adhesive layer 127 and the protective layer 129b, the portion of the light emitted from the white grid area 1102 that is refracted and irradiated to the black grid area 1101 can be reduced, thereby reducing the brightness of the black grid area 1101.

[0144] 5. The side of the touch driving electrode close to the substrate 120 is coated with a shading material 126, and the orthographic projection of the shading material 126 on the substrate 120 overlaps with the orthographic projection of the touch driving electrode on the substrate 120; and / or the side of the touch sensing electrode close to the substrate 120 is coated with a shading material 126, and the orthographic projection of the shading material 126 on the substrate 120 overlaps with the orthographic projection of the touch sensing electrode on the substrate 120. The shading material 126 can absorb part of the light irradiated on the metal wire, reduce the reflection of the light by the metal wire, and further reduce the brightness of the black grid area 1101.

[0145] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0146] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0147] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0148] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A touch display panel, characterized in that: include: Display substrate; A touch control substrate, arranged on the light emitting surface side of the display substrate, comprising a base, a plurality of touch control driving electrodes and a plurality of touch control sensing electrodes located on a side of the base away from the display substrate, wherein the touch control driving electrodes and the touch control sensing electrodes are insulated and cross-arranged; A first light shielding layer is provided on a side of the touch driving electrode close to the substrate, and an orthographic projection of the first light shielding layer on the display substrate at least partially overlaps with an orthographic projection of the touch driving electrode on the display substrate; and / or a second light shielding layer is provided on a side of the touch sensing electrode close to the substrate, and an orthographic projection of the second light shielding layer on the display substrate at least partially overlaps with an orthographic projection of the touch sensing electrode on the display substrate; A side of the touch drive electrode close to the substrate is coated with a shading material, and an orthographic projection of the shading material on the substrate overlaps with an orthographic projection of the touch drive electrode on the substrate; and / or a side of the touch sensing electrode close to the substrate is coated with a shading material, and an orthographic projection of the shading material on the substrate overlaps with an orthographic projection of the touch sensing electrode on the substrate.

2. The touch display panel according to claim 1, characterized in that: The orthographic projection of the first light shielding layer on the display substrate completely overlaps with the orthographic projection of the touch driving electrode on the display substrate; and / or, The orthographic projection of the second light shielding layer on the display substrate completely overlaps with the orthographic projection of the touch sensing electrode on the display substrate.

3. The touch display panel according to claim 1, characterized in that: The touch substrate includes a first light shielding layer, a first flat layer, the touch driving electrode, an insulating layer, a second light shielding layer, a second flat layer, the touch sensing electrode and a third flat layer which are sequentially stacked on a side of the base away from the display substrate.

4. The touch display panel according to claim 1, characterized in that: The first light shielding layer and the second light shielding layer are arranged on the same layer.

5. The touch display panel according to claim 4, characterized in that: The touch control substrate comprises a first flat layer, the touch control driving electrode, an insulating layer, the touch control sensing electrode and a second flat layer which are sequentially stacked on a side of the base away from the display substrate; The first light shielding layer and the second light shielding layer are located on a side of the first planar layer close to the substrate.

6. The touch display panel according to claim 4, characterized in that: The touch control substrate comprises a first flat layer arranged on a side of the base close to the display substrate, and the touch control driving electrodes, the insulating layer, the touch control sensing electrodes and the second flat layer arranged in sequence on a side of the base away from the display substrate; The first light shielding layer and the second light shielding layer are located on a side of the first planar layer close to the substrate.

7. The touch display panel according to any one of claims 1 to 6, characterized in that: The touch substrate further comprises an optical adhesive layer, a refractive buffer layer and a protective layer which are sequentially stacked and arranged on a side of the touch sensing electrode away from the substrate; The refractive index of the refractive buffer layer is smaller than the refractive index of the protective layer, and the refractive index of the refractive buffer layer is greater than the refractive index of the optical adhesive layer.

8. The touch display panel according to claim 7, characterized in that: The display substrate comprises a substrate, an organic light emitting device and a polarizer which are sequentially arranged along a light emitting direction, and the polarizer and the base of the touch substrate are connected via an optical adhesive layer.

9. The touch display panel according to claim 7, characterized in that: The material of the substrate includes cycloolefin polymer or acrylic.

10. A display device, characterized in that: A touch display panel comprising any one of claims 1 to 9.

11. A method for manufacturing a touch display panel according to any one of claims 1 to 9, characterized in that: include: Providing a display substrate; A touch substrate is manufactured on the light emitting surface side of the display substrate, wherein the touch substrate comprises a base, and a plurality of cross-insulated touch driving electrodes and touch sensing electrodes located on a side of the base away from the display substrate; the touch substrate further comprises a first light shielding layer and / or a second light shielding layer; Among them, the first light shielding layer is located on a side of the touch driving electrode close to the substrate, and its orthographic projection on the display substrate at least partially overlaps with the orthographic projection of the touch driving electrode on the display substrate; the second light shielding layer is located on a side of the touch sensing electrode close to the substrate, and its orthographic projection on the display substrate at least partially overlaps with the orthographic projection of the touch sensing electrode on the display substrate.

12. The manufacturing method according to claim 11, characterized in that: The step of manufacturing a touch control substrate on the light emitting surface of the display substrate comprises: providing a substrate; forming a first light shielding layer on one side of the substrate; Making a touch driving electrode on a side of the first light shielding layer away from the substrate; A second light shielding layer is formed on a side of the touch driving electrode away from the first light shielding layer; A touch sensing electrode is fabricated on a side of the second light shielding layer away from the touch driving electrode.

13. The manufacturing method according to claim 11, characterized in that: The step of manufacturing a touch control substrate on the light emitting surface of the display substrate comprises: providing a substrate; Making a first light-shielding layer and a second light-shielding layer on one side of the substrate; Making a touch driving electrode on a side of the first light shielding layer and the second light shielding layer away from the substrate; A touch sensing electrode is fabricated on a side of the touch driving electrode away from the display substrate.

14. The manufacturing method according to claim 11, characterized in that: The step of manufacturing a touch control substrate on the light emitting surface of the display substrate comprises: providing a substrate; Forming a first light shielding layer and a second light shielding layer on a side of the base close to the display substrate; Making a touch driving electrode on a side of the substrate away from the first light shielding layer and the second light shielding layer; A touch sensing electrode is fabricated on a side of the touch driving electrode away from the substrate.

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