Display panel, preparation method thereof and display device

Abstract

The invention discloses a display panel and a preparation method thereof and a display device, the display panel comprises a substrate, light-emitting units, isolation structures and a first light absorption layer, the multiple light-emitting units are located on one side of the substrate, the isolation structures are located on one side of the substrate and located between the adjacent light-emitting units, and the isolation structures enclose to form an opening structure; the first light absorption layer comprises a first light absorption part and a first light transmission part, and the first light absorption part is located on the side, away from the substrate, of the isolation structure; the orthographic projections of the first light-transmitting part, the opening structure and the light-emitting unit on the substrate are at least partially overlapped. According to the display panel provided by the invention, the reflectivity of the display panel can be reduced, and the display quality is improved.

Description

Technical Field

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

[0002] With the development of display technology, the display quality requirements of display devices are getting higher and higher. However, the display effect of the display panel in the related art is not good, which affects the visual experience. Summary of the invention

[0003] The embodiments of the present application provide a display panel and a method for manufacturing the same, and a display device, which can reduce the reflectivity of the display panel and improve the display quality.

[0004] An embodiment of a first aspect of the embodiments of the present application provides a display panel, including:

[0005] substrate;

[0006] A plurality of light-emitting units are located on one side of the substrate;

[0007] An isolation structure, located on one side of the substrate and between adjacent light-emitting units, wherein the isolation structure encloses an opening structure;

[0008] The first light absorbing layer comprises a first light absorbing portion and a first light transmitting portion, wherein the first light absorbing portion is located on a side of the isolation structure away from the substrate; and the orthographic projections of the first light transmitting portion, the opening structure, and the light emitting unit on the substrate at least partially overlap.

[0009] Among them, the first light absorbing part has an absorption effect on light. The light irradiated toward the surface of the isolation structure facing away from the substrate can first enter the first light absorbing part and be absorbed by the first light absorbing part, thereby reducing the amount of light reflected by the surface of the isolation structure facing away from the substrate, thereby improving the display effect.

[0010] According to an implementation of the first aspect of the present invention, the orthographic projection of the first light absorbing layer on the isolation structure covers the isolation structure; thereby, each position of the surface of the isolation structure facing away from the substrate is blocked by the first light absorbing layer, so as to reduce the amount of light reflected by the isolation structure.

[0011] Preferably, the first light absorbing portion is arranged in contact with the isolation structure to reduce the probability of light entering between the first light absorbing portion and the isolation structure and being reflected by the isolation structure, thereby helping to further reduce the amount of light reflected by the isolation structure.

[0012] According to any of the aforementioned embodiments of the first aspect of the present invention, it further includes a filter layer, which is located on the side of the isolation structure away from the substrate, and the filter layer includes a filter function portion arranged opposite to the opening structure; thereby improving the light output purity of the light-emitting unit.

[0013] Preferably, the orthographic projection of the filter layer on the substrate covers at least part of the orthographic projection of the isolation structure on the substrate;

[0014] Preferably, the orthographic projection of the filter layer on the substrate covers at least part of the orthographic projection of the first light absorbing layer on the substrate. The filter layer can selectively transmit part of the light, thereby reducing the amount of light incident on the isolation structure and / or the first light absorbing layer.

[0015] According to any of the aforementioned embodiments of the first aspect of the present invention, further comprising an encapsulation layer, the encapsulation layer comprising a first encapsulation layer and a second encapsulation layer, the first encapsulation layer being located on a side of the filter layer close to the substrate, and the second encapsulation layer being located on a side of the filter layer away from the substrate;

[0016] Preferably, the material of the first encapsulation layer includes an inorganic material, and the material of the second inorganic layer includes an organic material;

[0017] Preferably, the encapsulation layer further comprises a third encapsulation layer, the third encapsulation layer is located on a side of the second encapsulation layer away from the filter layer, and the material of the third encapsulation layer comprises an inorganic material.

[0018] The filter layer is located between the first encapsulation layer and the second encapsulation layer in the encapsulation layer. On the one hand, it is in direct contact with the light-emitting unit through the first encapsulation layer to ensure the encapsulation effect. On the other hand, the vertical distance between the filter layer and the isolation structure can be reduced to facilitate alignment. The second encapsulation layer is an organic material layer with strong ductility and flatness, which can compensate for the flatness change caused by the filter layer.

[0019] According to any of the aforementioned embodiments of the first aspect of the present invention, it further includes a touch layer and a second light absorbing layer, the touch layer is located on a side of the first light absorbing layer away from the substrate, the second light absorbing layer is located on a side of the touch layer away from the substrate, the second light absorbing layer includes a second light absorbing portion and a second light transparent portion, and the orthographic projection of the second light transparent portion on the substrate at least partially overlaps with the orthographic projection of the opening structure on the substrate.

[0020] The second light absorbing layer can reduce the amount of light incident on the surface of the touch layer, thereby further reducing the reflectivity of the display panel.

[0021] According to any of the aforementioned embodiments of the first aspect of the present invention, the touch layer includes a first touch layer and a second touch layer stacked in a direction away from the substrate, and the second light absorbing portion is in contact with the surface of the second touch layer facing away from the first touch layer; the second light absorbing portion is in contact with the surface of the second touch layer facing away from the first touch layer, thereby shielding the surface of the second touch layer facing away from the substrate. At the same time, the direct contact between the two can reduce the probability of large-angle light from the outside entering the display panel and irradiating the surface of the second touch layer facing away from the substrate through the two, thereby further reducing the amount of light reflected from the surface of the second touch layer facing away from the substrate.

[0022] Preferably, the first touch layer includes a first wiring, the second touch layer includes a first touch electrode, a second touch electrode and a second wiring, the first touch electrodes adjacent to each other in a first direction are connected via the first wiring, and the second touch electrodes adjacent to each other in a second direction are connected via the second wiring;

[0023] Preferably, the first touch electrode includes an extension portion, the extension portion is arranged at both ends of the first touch electrode along the first direction, and adjacent extension portions are spaced apart by a preset distance, and the preset distance is greater than the line width of the second wiring; an extension portion is formed on the first touch electrode connected to the first wiring, thereby reducing the length of the first wiring, thereby reducing the adverse effect of the first wiring on the light reflectivity of the display panel, and at the same time, a second light absorbing portion is provided on the side of the extension portion facing away from the substrate, so the extension portion reflects less light.

[0024] Preferably, along the first direction, a minimum distance between the second wiring and the extension portion is a, 1.5 μm≤a≤3.5 μm.

[0025] According to any of the aforementioned embodiments of the first aspect of the present invention, the first light absorbing layer includes a first layer, a second layer and a third layer stacked in a direction away from the substrate, the material of the first layer includes Cu2O, the material of the second layer includes CuO, and the material of the third layer includes a CuO nanowire array structure layer; the second light absorbing layer includes a fourth layer, a fifth layer and a sixth layer stacked in a direction away from the substrate, the material of the fourth layer includes Cu2O, the material of the fifth layer includes CuO, and the material of the sixth layer includes a CuO nanowire array structure layer; the first light absorbing layer and the second light absorbing layer can be formed by in-situ growth on the surface of the same material, and the material of the isolation structure and the touch layer is often copper. Therefore, the first light absorbing layer and the second light absorbing layer can be directly formed by in-situ growth, without adding a patterning process for the first light absorbing layer and the second light absorbing layer, thereby saving preparation process.

[0026] Preferably, the thickness of the first light absorbing layer and the second light absorbing layer is less than or equal to 0.5 micrometer;

[0027] Preferably, the reflectivity of the first light absorbing layer and the second light absorbing layer are both 1%-3%.

[0028] According to any of the aforementioned embodiments of the first aspect of the present invention, the material of the isolation structure includes copper;

[0029] Preferably, the isolation structure includes a first part and a second part, the second part is located on a side of the first part away from the substrate, and the orthographic projection of the first part on the substrate is located within the orthographic projection of the second part on the substrate, and the material of the second part includes copper.

[0030] An embodiment of the second aspect of the present application further provides a display device, comprising any display panel provided by the first aspect of the present application.

[0031] The third aspect of the present application also provides a method for preparing a display panel, including:

[0032] A plurality of light-emitting units and an isolation structure are formed on one side of the substrate, wherein the isolation structure is located between adjacent light-emitting units and the isolation structure encloses an opening structure;

[0033] A first light absorbing layer is formed on the side of the isolation structure away from the substrate, the first light absorbing layer includes a first light absorbing portion and a first light transmitting portion, the first light absorbing portion is formed on the side of the isolation structure away from the substrate; the first light transmitting portion, the opening structure, and the orthographic projection of the light emitting unit on the substrate at least partially overlap.

[0034] According to an implementation of the third aspect of the present invention, the step of forming a first light absorption layer on a side of the isolation structure away from the substrate includes:

[0035] The first light absorbing portion is formed by in-situ growth on a surface of the isolation structure that is away from the substrate.

[0036] The first light absorbing layer is simple to prepare, and there is no need to increase the number of masking times. It only needs to be formed synchronously with the isolation structure, which can reduce the number of preparation steps and the preparation cost.

[0037] The display panel provided in the present application includes a substrate, a light-emitting unit, an isolation structure and a first light-absorbing layer. A first light-absorbing layer is provided on the side of the isolation structure away from the substrate, and the first light-absorbing layer includes a first light-absorbing portion and a first light-transmitting portion. The first light-transmitting portion, the opening structure, and the orthographic projection of the light-emitting unit on the substrate overlap at least partially to ensure the light output rate of the light-emitting unit. The first light-absorbing portion has an absorption effect on light, and the light irradiated toward the surface of the side of the isolation structure away from the substrate can first enter the first light-absorbing portion and be absorbed by the first light-absorbing portion, thereby reducing the amount of light reflected by the surface of the side of the isolation structure away from the substrate, thereby reducing the reflectivity of the display panel, helping to improve the adverse effects of high reflectivity on the hue of the display panel in the display state and improving the contrast, thereby improving the display effect; and reducing the reflection problem of high reflectivity in the dark state when the screen is turned off, and improving the dark uniformity of the display panel when the screen is turned off, that is, the display panel provided in the present application can comprehensively improve its own visual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application 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 creative work.

[0039] Figure 1 is a structural schematic diagram of a display panel provided in an embodiment of the present application;

[0040] Figure 2 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0041] Figure 3 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0042] Figure 4 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0043] Figure 5 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0044] Figure 6 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0045] Figure 7 is a schematic diagram of the structure of another display panel provided in an embodiment of the present application;

[0046] Figure 8 is a schematic diagram of the structure of a touch layer in a display panel provided in an embodiment of the present application;

[0047] Fig. 9 yes Figure 1 Enlarged view of the middle P region;

[0048] Fig.10 yes Figure 7 Enlarged view of the middle Q region;

[0049] Fig.11 is a structural schematic diagram of a display device provided in an embodiment of the present application;

[0050] Fig.12 It is a flow chart of a method for preparing a display panel provided in an embodiment of the present application.

[0051] In the attached figure:

[0052] 1-display panel; 11-substrate; 19-pixel definition layer; 191-pixel definition part; 192-pixel opening; 193-opening; 13-isolation structure; 131-first part; 132-second part; 14-first light absorption layer; 141-first light absorption part; 142-first light transmission part; 143-first layer; 144-second layer; 145-third layer; 15-filter layer; 151-filter function part; 16-touch layer; 161-first touch layer; 1611-first wiring; 162 -second touch layer; 1621-first touch electrode; 1622-second touch electrode; 1623-second wiring; 17-second light absorbing layer; 171-second light absorbing portion; 172-second light transmitting portion; 173-fourth layer; 174-fifth layer; 175-sixth layer; 18-packaging layer; 181-first packaging layer; 182-second packaging layer; 183-third packaging layer; 12-light-emitting unit; 121-first electrode; 122-light-emitting functional layer; 123-second electrode; 2-display device. DETAILED DESCRIPTION

[0053] The features and exemplary embodiments of various aspects of the application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the application. However, it is obvious to those skilled in the art that the application can be implemented when some details in these specific details are not needed. The following description of the embodiments is only to provide a better understanding of the application by illustrating the example of the application.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0055] After long-term research, the inventors found that in order to achieve the independence of the light-emitting units in the display panel, an isolation structure is provided in the display panel to separate the light-emitting units to reduce the crosstalk between adjacent light-emitting units. The isolation structure is usually made of metal material, and the reflectivity of the metal material is relatively high, so that the reflectivity of the display panel is relatively high, which affects the display effect and the dark state effect, thereby affecting the visual experience of the display panel. Based on the research on the above problems, the inventors provide a display panel and a preparation method thereof, and a display device to reduce the reflectivity of the display panel and improve the display quality.

[0056] In order to better understand this application, Figures 1 to 12 A display panel, a method for manufacturing the same, and a display device according to embodiments of the present application are described in detail.

[0057] See also Figure 1 The embodiment of the present application provides a display panel 1, which includes a substrate 11, a light-emitting unit 12, an isolation structure 13 and a first light-absorbing layer 14. The light-emitting unit 12 is located on one side of the substrate 11, and the number of the light-emitting units 12 is multiple. The isolation structure 13 is located on one side of the substrate 11 and between adjacent light-emitting units 12, and the isolation structure 13 is enclosed to form an opening structure. The first light-absorbing layer 14 includes a first light-absorbing portion 141 and a first light-transmitting portion 142. The first light-absorbing portion 141 is located on the side of the isolation structure 13 away from the substrate 11, and can be used to block light from irradiating the surface of the isolation structure 13 away from the substrate 11; the first light-transmitting portion 142, the opening structure, and the orthographic projections of the light-emitting unit 12 on the substrate 11 at least partially overlap.

[0058] The display panel 1 provided in the present application includes a substrate 11, a light-emitting unit 12, an isolation structure 13 and a first light-absorbing layer 14. The first light-absorbing layer 14 is provided on the side of the isolation structure 13 away from the substrate 11, and the first light-absorbing layer 14 includes a first light-absorbing portion 141 and a first light-transmitting portion 142. The first light-transmitting portion 142, the opening structure, and the orthographic projection of the light-emitting unit 12 on the substrate 11 at least partially overlap to ensure the light extraction rate of the light-emitting unit 12. The first light absorbing portion 141 has an absorbing effect on light. The light irradiated toward the surface of the isolation structure 13 facing away from the substrate 11 can first enter the first light absorbing portion 141 and be absorbed by the first light absorbing portion 141, thereby reducing the amount of light reflected by the surface of the isolation structure 13 facing away from the substrate 11, thereby reducing the reflectivity of the display panel 1, helping to improve the adverse effects of high reflectivity on the hue of the display panel 1 in the display state and improve the contrast, thereby improving the display effect; and reducing the reflection problem caused by high reflectivity in the dark state with the screen turned off, thereby improving the dark state uniformity of the display panel 1 when the screen is turned off, that is, the display panel 1 provided in the present application can comprehensively improve its own visual experience.

[0059] The display panel provided in the present application may further include a pixel definition layer 19, the pixel definition layer 19 includes a pixel definition portion 191 and a pixel opening 192 defined by the pixel definition portion, the pixel opening 192 is used to expose the light emitting unit 12. The isolation structure 13 may be located on a side surface of the pixel definition portion 121 away from the substrate 11. Alternatively, the pixel definition layer 19 further includes an opening 193 located between adjacent pixel openings, the opening 193 may be a groove or a through hole, such as Figure 2 As shown, the isolation structure 13 may be located in the groove, or as shown in FIG. Figure 3 As shown, the isolation structure 13 may be located in the through hole and directly contact the substrate 11 , which is not particularly limited in the present application.

[0060] In the above implementation mode, if Figures 1 to 3 As shown, in the display panel 1, the light-emitting unit 12 can be arranged opposite to the pixel opening 192 and correspond one to one. The light-emitting unit 12 includes a first electrode 121, a light-emitting functional layer 122 and a second electrode 123. The first electrode 121 is located on the substrate 11 and exposed through the pixel opening 192. The pixel defining portion 191 can cover the edge of the first electrode 121 to insulate the adjacent first electrode 121. The light-emitting functional layer 122 is located on the side of the first electrode 121 away from the substrate 11, and the second electrode 123 is located on the side of the light-emitting functional layer 122 away from the substrate 11. The existence of the isolation structure 13 can isolate the light-emitting functional layer 122, so that the light-emitting functional layers 122 of different light-emitting units 12 are independent of each other, thereby reducing the crosstalk between adjacent light-emitting units 12. In other embodiments, the isolation structure 13 can also isolate the second electrode 123. The second electrodes 193 that are independent of each other can be controlled separately compared with the planar electrodes arranged on the entire surface, which can effectively reduce the power consumption of the display panel 1.

[0061] In the above implementation mode, if Figures 1 to 3 As shown, the display panel 1 also includes an encapsulation layer 18 located on the side of the light-emitting layer away from the substrate 11. The encapsulation layers 18 of different light-emitting units 12 on the side away from the substrate 11 can also be independent of each other to achieve independent encapsulation of each light-emitting unit 12, thereby improving the packaging reliability of the light-emitting unit 12.

[0062] In a possible implementation, Figures 1 to 3 As shown, the orthographic projection of the first light absorbing layer 14 on the isolation structure 13 covers the isolation structure 13 .

[0063] In the above embodiment, the first light absorbing layer 14 covers the surface of the side of the isolation structure 13 facing away from the substrate 11, so that each position of the surface of the side of the isolation structure 13 facing away from the substrate 11 is blocked by the first light absorbing layer 14. The first light absorbing layer 14 can absorb light, thereby reducing the amount of light irradiated to the surface of the isolation structure 13 facing away from the substrate 11, thereby reducing the amount of light reflected by the isolation structure 13.

[0064] In a feasible implementation manner, the first light absorbing portion 141 is disposed in contact with the isolation structure 13 , which can simplify the manufacturing process.

[0065] In a possible implementation, Figure 4 As shown, the display panel 1 further includes a filter layer 15 , which is located on a side of the isolation structure 13 away from the substrate 11 , and includes a filter function portion 151 disposed opposite to the opening structure.

[0066] In the above embodiment, the filter layer 15 can filter the light incident from the outside to the inside of the display panel 1, thereby reducing the amount of light incident to the film layer below the filter layer 15, so as to reduce the amount of reflection of the light incident to the inside of the display panel 1 by the internal structure of the display panel 1, thereby improving the contrast of the display panel 1. At the same time, the filter layer 15 has a high light transmittance, which can improve the contrast of the display panel 1 while ensuring the light extraction rate of the display panel 1, thereby helping to ensure low power consumption of the display panel 1.

[0067] In a possible implementation, Figure 4 and Figure 5 As shown, the display panel 1 further includes a filter layer 15, which is located on the side of the isolation structure 13 away from the substrate 11, and includes a filter function portion 151 arranged opposite to the opening structure. The orthographic projection of the filter layer 15 on the substrate 11 covers at least part of the orthographic projection of the isolation structure 13 on the substrate 11.

[0068] Specifically, Figure 4As shown, the orthographic projection of the filter layer 15 on the substrate 11 partially overlaps with the orthographic projection of the isolation structure 13 on the substrate 11 .

[0069] Or, if Figure 5 As shown, the orthographic projection of the filter layer 15 on the substrate 11 covers the orthographic projection of the isolation structure 13 on the substrate 11 .

[0070] Specifically, the filter layer 15 includes a plurality of filter function parts 151, and the filter function parts 151 correspond one-to-one to the opening structures. In each pair of one-to-one corresponding filter function parts 151 and the opening structures, the color of the filter function parts 151 is the same as the light output color of the light-emitting unit 12 located in the opening structure, so as to improve the purity of the light output of the light-emitting unit 12.

[0071] The light filtering function portion 151 covers the opening structure and extends to the surface of the first light absorbing layer 14 facing away from the substrate 11 to further filter and block external light, thereby further reducing the probability of external light irradiating the isolation structure 13 and further reducing the reflectivity.

[0072] Specifically, each isolation structure 13 may be partially covered by the light filtering function parts 151 on the opening structures on both sides of the isolation structure 13 , so as to completely cover the isolation structure 13 .

[0073] In the above embodiment, the orthographic projection of the filter layer 15 on the substrate 11 covers at least part of the orthographic projection of the first light absorbing layer 14 on the substrate 11 to further reduce the reflectivity. Figure 4 , the orthographic projection of the filter layer 15 on the substrate 11 covers part of the orthographic projection of the first light absorbing layer 14 on the substrate 11. Please refer to Figure 5 , the orthographic projection of the filter layer 15 on the substrate 11 covers the orthographic projection of the first light absorption layer 14 on the substrate 11. Specifically, two adjacent filter function parts 151 may be covered on the same first light absorption layer 14. It is understandable that one filter function part 151 may also be completely covered on one first light absorption layer 14.

[0074] In the above embodiment, if Figure 6As shown, the display panel 1 may include an encapsulation layer 18, and the encapsulation layer 18 includes a first encapsulation layer 181 and a second encapsulation layer 182 stacked in a direction away from the substrate 11. The first encapsulation layer 181 is located on the side of the filter layer 15 close to the substrate 11, and the second encapsulation layer 182 is located on the side of the filter layer 15 away from the substrate 11. The encapsulation layer 18 may also include a third encapsulation layer 183. The first encapsulation layer 181 and the third encapsulation layer 183 may be inorganic material layers, the second encapsulation layer 182 may be an organic material layer, and the filter layer 15 may be located between the first encapsulation layer 181 and the second encapsulation layer 182. On the one hand, the first encapsulation layer 181 is spaced between the filter layer 15 and the light-emitting unit 12, which can reduce the influence of the filter layer 15 on the encapsulation effect of the light-emitting unit 12. On the other hand, the side of the filter layer 15 facing away from the substrate 11 is the second encapsulation layer 182, that is, the organic material layer. The flatness and ductility of the organic material layer are better than those of the inorganic material layer. Therefore, the effect of contact with the filter layer 15 is better than that of the inorganic material layer. At the same time, after covering the filter layer 15, a flat surface on the side facing away from the substrate 11 is provided, which helps to improve the preparation yield of subsequent film layers.

[0075] In a possible implementation, Figure 7 As shown, it also includes a touch layer 16 and a second light absorbing layer 17. The touch layer 16 is located on the side of the first light absorbing layer 14 away from the substrate 11. The second light absorbing layer 17 is located on the side of the touch layer 16 away from the substrate 11. The second light absorbing layer 17 includes a second light absorbing portion 171 and a second light transmitting portion 172. The orthographic projection of the second light transmitting portion 172 on the substrate 11 at least partially overlaps with the orthographic projection of the opening structure on the substrate 11.

[0076] In the above embodiment, the display panel 1 is a touch display panel, including a touch layer 16 located on the side of the first light absorbing layer 14 away from the substrate 11. Specifically, the touch layer 16 is located on the side of the encapsulation layer 18 away from the substrate 11. It also includes a second light absorbing layer 17 located on the side of the touch layer 16 away from the substrate 11. Since the touch layer 16 is often made of a material with a high reflectivity, such as metal, the second light absorbing layer 17 is formed on the side of the touch layer 16 away from the substrate 11, which can absorb and block external light, reduce the amount of light irradiated to the touch layer 16, and thus reduce the amount of light reflected by the touch layer 16.

[0077] In the above embodiment, the second light absorbing layer 17 includes a second light absorbing portion 171 and a second light transmitting portion 172 , and the orthographic projections of the second light transmitting portion 172 and the opening structure on the substrate 11 at least partially overlap to ensure the light extraction rate of the light emitting unit 12 .

[0078] In the above embodiment, the first light absorption layer 14 can be used to absorb scattered light in the second encapsulation layer 182 and reflected light at the bottom of the touch layer 16 to further reduce the reflectivity.

[0079] In the above embodiment, when the display panel 1 includes the filter layer 15 , the touch layer 16 is located on the side of the filter layer 15 facing away from the substrate 11 .

[0080] In a possible implementation, Figure 7 As shown, the touch layer 16 includes a first touch layer 161 and a second touch layer 162 stacked in a direction away from the substrate 11 , and the second light absorbing portion 171 contacts a surface of the second touch layer 162 away from the first touch layer 161 .

[0081] In the above embodiment, the touch layer 16 includes a first touch layer 161 and a second touch layer 162, and the first touch layer 161 and the second touch layer 162 are stacked and insulated from each other in a direction away from the substrate 11. The second light absorbing portion 171 contacts the surface of the second touch layer 162 away from the first touch layer 161, thereby shielding the surface of the second touch layer 162 away from the substrate 11. At the same time, the direct contact between the two can reduce the probability that large-angle light from the outside enters the display panel 1 and irradiates the surface of the second touch layer 162 away from the substrate 11 through the two, further reducing the amount of light reflected from the surface of the second touch layer 162 away from the substrate 11.

[0082] In a possible implementation, Figure 8 As shown, the first touch layer 161 includes a first wiring 1611, and the second touch layer 162 includes a first touch electrode 1621, a second touch electrode 1622, and a second wiring 1623. The first touch electrodes 1621 adjacent to each other along the first direction x are connected via the first wiring 1611, and the second touch electrodes 1622 adjacent to each other along the second direction y are connected via the second wiring 1623. In a feasible implementation manner, the first touch electrode 1621 may further include an extension portion 1624, and the extension portions 1624 are disposed at both ends of the first touch electrode 1621 along the first direction x, and the adjacent extension portions 1624 along the first direction x are spaced apart by a preset distance, and the preset distance is greater than the line width of the second wiring 1623.

[0083] In the above embodiment, the second touch layer 162 is disposed on the side of the first touch layer 161 away from the substrate 11, so that the first touch layer 161 can be shielded by the second touch layer 162, that is, the first wiring 1611 is shielded by the second wiring 1623 of the second touch layer 162, and the second light absorbing portion 171 is formed on the side of the second wiring 1623 away from the substrate 11, so that the light reflection amount of the second wiring 1623 is reduced. At the same time, an extension portion 1624 is formed on the first touch electrode 1621 connected to the first wiring 1611, so that the length of the first wiring 1611 can be reduced, thereby reducing the adverse effect of the first wiring 1611 on the light reflectivity of the display panel 1, and at the same time, the second light absorbing portion 171 is provided on the side of the extension portion 1624 away from the substrate 11, so that the light reflection amount of the extension portion 1624 is low.

[0084] In a possible implementation, Figure 8 As shown, along the first direction x, the minimum distance between the second wiring 1623 and the extension portion is a, 1.5 μm≤a≤3.5 μm.

[0085] Since the second wiring 1623 and the extension 1624 are located in the same layer, a certain distance must be kept between them to achieve insulation between them. Considering the insulation performance, the reduction of the first wiring 1611, and the impact of the manufacturing process fluctuation, the minimum distance a between the second wiring 1623 and the extension is set to 1.5μm to 3.5μm. Preferably, a can also be 1.5μm to 2.5μm, so that the insulation effect can be guaranteed under the premise of reserving the process fluctuation, and the length of the first wiring 1611 can be reduced to reduce the reflection of light by the first wiring 1611.

[0086] Specifically, a may be 1.5 μm, 1.6 μm, 1.8 μm, 1.9 μm, 2.0 μm, 2.3 μm, 2.5 μm, 2.7 μm, 3.0 μm, 3.3 μm, 3.4 μm, 3.5 μm, etc., and is not particularly limited in this application.

[0087] In a feasible implementation, the reflectivity of the first light absorption layer 14 and the second light absorption layer 17 are both 1%-3%. Preferably, the reflectivity of the first light absorption layer 14 and the second light absorption layer 17 are both 1%-2%.

[0088] Specifically, the reflectivity of the first light absorption layer 14 may be 1%, 1.5%, 1.8%, 1.9%, 2%, 2.2%, 2.6%, 3%, etc., which is not particularly limited in the present application.

[0089] Specifically, the reflectivity of the second light absorbing layer 17 may be 1%, 1.5%, 1.7%, 1.8%, 2.1%, 2.3%, 2.6%, 3%, etc., which is not particularly limited in the present application.

[0090] The reflectivity of the first light absorbing layer 14 and the second light absorbing layer 17 may be the same or different, which is not particularly limited in the present application.

[0091] In the above embodiment, the reflectivity of the first light absorption layer 14 is much lower than that of the isolation structure 13 , and the reflectivity of the second light absorption layer 17 is much lower than that of the touch layer 16 , thereby achieving good light absorption and light blocking effects.

[0092] In a possible implementation, Fig. 9 As shown, the first light absorption layer 14 includes a first layer 143, a second layer 144 and a third layer 145 stacked in a direction away from the substrate 11, the material of the first layer 143 includes Cu2O, the material of the second layer 144 includes CuO, and the material of the third layer 145 includes a CuO nanowire array structure layer.

[0093] In the above embodiment, the first light absorption layer 14 can be grown in situ on the surface of the copper material. When the material of the isolation structure 13 is copper, the first light absorption layer 14 can be patterned synchronously with the second portion 132 of the isolation structure 13, thereby simplifying the preparation process and reducing costs.

[0094] In a possible implementation, Fig.10 As shown, the second light absorption layer 17 includes a fourth layer 173, a fifth layer 174 and a sixth layer 175 stacked in a direction away from the substrate 11, the material of the fourth layer 173 includes Cu2O, the material of the fifth layer 174 includes CuO, and the material of the sixth layer 175 includes a CuO nanowire array structure layer. Similar to the first light absorption layer 14, the present application does not repeat it.

[0095] Preferably, the thickness of the first light absorption layer 14 is less than or equal to 0.5 micrometers; preferably, the thickness of the first light absorption layer 14 may be 0.3 micrometers to 0.5 micrometers, and specifically, the thickness of the first light absorption layer 14 may be 0.3 micrometers, 0.35 micrometers, 0.4 micrometers, 0.45 micrometers, or 0.5 micrometers. The thickness of the second light absorption layer 17 is less than or equal to 0.5 micrometers; preferably, the thickness of the second light absorption layer 17 may be 0.3 micrometers to 0.5 micrometers, and specifically, the thickness of the second light absorption layer 17 may be 0.3 micrometers, 0.35 micrometers, 0.4 micrometers, 0.45 micrometers, or 0.5 micrometers.

[0096] In a feasible implementation, the material of the isolation structure 13 includes copper, the material of the second touch layer 162 includes copper, and the material of the pixel definition layer 12 includes an inorganic material.

[0097] The second electrodes 193 of adjacent light emitting units 12 can be electrically connected through the isolation structure 13 to achieve synchronous power supply, thereby reducing the number of power supply lines for the second electrodes 193 in the display panel 1, thereby reducing the wiring difficulty in the display panel 1 and simplifying the preparation process.

[0098] The isolation structure 13 is made of copper. On the one hand, copper has good conductivity and low cost. On the other hand, when copper is used, a first light absorption layer 14 having the above structure can be in-situ grown on the surface of the isolation structure 13 facing away from the substrate 11. The first light absorption layer 14 and the isolation structure 13 can be patterned synchronously, thereby simplifying the preparation process and reducing costs.

[0099] Specifically, the isolation structure 13 includes a first portion 131 and a second portion 132 arranged in a direction away from the substrate 11, and the orthographic projection of the first portion 131 on the substrate 11 is located within the orthographic projection of the second portion 132 on the substrate 11, that is, a step is formed between the first portion 131 and the second portion 132, so as to separate adjacent light-emitting units 19, which helps to reduce the crosstalk between adjacent light-emitting units 19. Among them, the material of the second portion 132 may include copper, and in the process of preparing the first light-absorbing layer 14, the first light-absorbing layer 14 having the above structure may be in-situ grown on the surface of the second portion 132 on the side away from the substrate 11, and the first light-absorbing layer 14 and the second portion 132 may be patterned synchronously, thereby simplifying the preparation process and reducing costs.

[0100] At the same time, an isolation structure 13 is provided on the side of the pixel definition layer 12 away from the substrate. When preparing light-emitting units 12 of various colors, the various film layers in the light-emitting units 12 of one color are first formed on the entire surface, and then the light-emitting units 12 of this color are formed at the designated pixel openings 192 by etching, and the pixel openings 192 used to form light-emitting units 12 of other colors are exposed. Light-emitting units 12 of different colors are prepared in multiple times. In the above preparation process, there is no need to use a mask plate, and there is no need to set a support column on the side of the pixel definition layer 12 away from the substrate 11, thereby saving preparation costs. The isolation structure 13 can be prepared and formed with a dark material, so as to have a light-shielding effect, prevent cross-light between adjacent light-emitting units 12, and shield the film layers between the isolation structure 13 and the substrate 11 to reduce the reflectivity of these film layers. At this time, the pixel definition layer 12 can be made of a light-transmitting inorganic material to further reduce material costs.

[0101] It is understandable that in other embodiments, when preparing light-emitting units 12 of various colors, the film layers in the light-emitting units 12 of one color may be formed on the entire surface first, and then the light-emitting units 12 of this color are formed at the designated opening structure formed by the isolation structure 13 by etching, and the opening structure for forming light-emitting units 12 of other colors is exposed. Light-emitting units 12 of different colors are prepared in multiple times.

[0102] The present application also provides a display device 2, such as Fig.11 As shown, it includes any one of the display panels 1 provided in the above embodiments of the present application.

[0103] Since the display device 2 provided in the present application includes any one of the display panels 1 provided in the above embodiments, the display device provided in the present application has the beneficial effects of any one of the display panels 1 provided in the above embodiments, which will not be described in detail herein.

[0104] The display device 2 in the embodiment of the present application includes but is not limited to mobile phones, personal digital assistants (PDA), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles and other devices with display functions.

[0105] The present application also provides a method for preparing the display panel 1, such as Fig.12 As shown, including:

[0106] S100 , forming a plurality of light emitting units 12 and an isolation structure 12 on one side of a substrate 11 .

[0107] The isolation structure 12 is located between adjacent light-emitting units 11 , and the isolation structure 12 encloses an opening structure.

[0108] S200, a first light absorbing layer 14 is formed on the side of the isolation structure 12 facing away from the substrate 11, the first light absorbing layer 14 includes a first light absorbing portion 141 and a first light transmitting portion 12, the first light absorbing portion 11 is formed on the side of the isolation structure 13 facing away from the substrate 11; the orthographic projections of the first light transmitting portion 142, the opening structure, and the light emitting unit 12 on the substrate 11 at least partially overlap.

[0109] The display panel 1 prepared by the above-mentioned preparation method of the present application includes a substrate 11, a light-emitting unit 12, an isolation structure 13 and a first light absorbing layer 14. The first light absorbing portion 141 has an absorption effect on light. The light irradiated toward the surface of the isolation structure 13 away from the substrate 11 can first enter the first light absorbing portion 141 and be absorbed by the first light absorbing portion 141, thereby reducing the amount of light reflected by the surface of the isolation structure 13 away from the substrate 11, thereby reducing the reflectivity of the display panel 1, helping to improve the adverse effects of high reflectivity on the hue of the display panel 1 in the display state and improve the contrast, thereby improving the display effect; and reducing the reflection problem caused by high reflectivity in the dark state with the screen turned off, thereby improving the dark state uniformity of the display panel 1 when the screen is turned off.

[0110] Preferably, the first light absorbing portion 141 is in direct contact with the surface of the isolation structure 13 facing away from the substrate 11 .

[0111] In a feasible implementation manner, step S200 includes:

[0112] The first light absorbing portion 141 is formed by in-situ growth on a surface of the isolation structure 13 facing away from the substrate 11 .

[0113] In the above embodiment, the material of the isolation structure 13 can be copper. When preparing the first light absorbing layer 14, the first light absorbing portion 141 can be formed by in-situ growth on the side of the isolation structure 13 away from the substrate 11. Specifically, firstly, at least the surface of the isolation structure 13 on the side away from the substrate 11 is wiped with alcohol cotton to make the surface smooth and clean; then the isolation structure 13 is exposed to an air atmosphere, and heating, cooling and other steps are performed to in-situ grow the first light absorbing portion 141. The first light absorbing portion 141 includes a first layer 143, a second layer 144 and a third layer 145 stacked in a direction away from the substrate 11. The material of the first layer 143 is Cu2O, the material of the second layer 144 is CuO, and the third layer 145 is a CuO nanowire array structure layer.

[0114] The reflectivity of the first light absorbing portion 141 formed by the above preparation method is relatively low, at 1%-3%, and the preparation method is simple, without increasing the number of masks, and only needs to be formed synchronously with the isolation structure 13, which can reduce the number of preparation steps and the preparation cost.

[0115] When the display panel 1 includes a touch layer 16 , a second light absorbing portion 171 may be formed on a surface of the touch layer 16 facing away from the substrate 11 . The preparation method of the second light absorbing portion 171 is similar to that of the first light absorbing portion 141 , and will not be described in detail in this application.

[0116] According to the embodiments of the present application as above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: include: substrate; A plurality of light-emitting units are located on one side of the substrate; An isolation structure, located on one side of the substrate and between adjacent light-emitting units, wherein the isolation structure encloses an opening structure; The first light absorbing layer comprises a first light absorbing portion and a first light transmitting portion, wherein the first light absorbing portion is located on a side of the isolation structure away from the substrate; and the orthographic projections of the first light transmitting portion, the opening structure, and the light emitting unit on the substrate at least partially overlap.

2. The display panel according to claim 1, characterized in that: The orthographic projection of the first light absorbing layer on the isolation structure covers the isolation structure; Preferably, the first light absorbing portion is arranged in contact with the isolation structure.

3. The display panel according to claim 1 or 2, characterized in that: It also includes a filter layer, the filter layer is located on a side of the isolation structure away from the substrate, and the filter layer includes a filter function portion arranged opposite to the opening structure; Preferably, the orthographic projection of the filter layer on the substrate covers at least part of the orthographic projection of the isolation structure on the substrate; Preferably, the orthographic projection of the filter layer on the substrate covers at least part of the orthographic projection of the first light absorbing layer on the substrate.

4. The display panel according to claim 3, characterized in that: It also includes an encapsulation layer, the encapsulation layer includes a first encapsulation layer and a second encapsulation layer, the first encapsulation layer is located on a side of the filter layer close to the substrate, and the second encapsulation layer is located on a side of the filter layer away from the substrate; Preferably, the material of the first encapsulation layer includes an inorganic material, and the material of the second inorganic layer includes an organic material; Preferably, the encapsulation layer further comprises a third encapsulation layer, the third encapsulation layer is located on a side of the second encapsulation layer away from the filter layer, and the material of the third encapsulation layer comprises an inorganic material.

5. The display panel according to any one of claims 1 to 4, characterized in that: The device further comprises a touch layer and a second light absorbing layer, wherein the touch layer is located on a side of the first light absorbing layer away from the substrate, the second light absorbing layer is located on a side of the touch layer away from the substrate, the second light absorbing layer comprises a second light absorbing portion and a second light transmitting portion, and an orthographic projection of the second light transmitting portion on the substrate at least partially overlaps with an orthographic projection of the opening structure on the substrate; Preferably, the touch layer comprises a first touch layer and a second touch layer stacked in a direction away from the substrate, and the second light absorbing portion is in contact with a surface of the second touch layer facing away from the first touch layer; Preferably, the first touch layer includes a first wiring, the second touch layer includes a first touch electrode, a second touch electrode and a second wiring, the first touch electrodes adjacent to each other in a first direction are connected via the first wiring, and the second touch electrodes adjacent to each other in a second direction are connected via the second wiring; Preferably, the first touch electrode comprises an extension portion, the extension portion is arranged at two ends of the first touch electrode along the first direction, adjacent extension portions are spaced apart by a preset distance, and the preset distance is greater than the line width of the second wiring; Preferably, along the first direction, a minimum distance between the second wiring and the extension portion is a, 1.5 μm≤a≤3.5 μm.

6. The display panel according to claim 5, characterized in that: The first light absorbing layer comprises a first layer, a second layer and a third layer stacked in a direction away from the substrate, the material of the first layer comprises Cu2O, the material of the second layer comprises CuO, and the material of the third layer comprises a CuO nanowire array structure layer; the second light absorbing layer comprises a fourth layer, a fifth layer and a sixth layer stacked in a direction away from the substrate, the material of the fourth layer comprises Cu2O, the material of the fifth layer comprises CuO, and the sixth layer comprises a CuO nanowire array structure layer; Preferably, the thickness of the first light absorbing layer and the second light absorbing layer is less than or equal to 0.5 micrometer; Preferably, the reflectivity of the first light absorbing layer and the second light absorbing layer are both 1%-3%.

7. The display panel according to claim 1, characterized in that: The material of the isolation structure includes copper; Preferably, the isolation structure includes a first part and a second part, the second part is located on a side of the first part away from the substrate, and the orthographic projection of the first part on the substrate is located within the orthographic projection of the second part on the substrate, and the material of the second part includes copper.

8. A display device, characterized in that: Comprising the display panel as described in any one of claims 1-7.

9. A method for preparing a display panel, characterized in that: include: A plurality of light-emitting units and an isolation structure are formed on one side of the substrate, wherein the isolation structure is located between adjacent light-emitting units and the isolation structure is enclosed to form an opening structure; A first light absorbing layer is formed on the side of the isolation structure away from the substrate, the first light absorbing layer includes a first light absorbing portion and a first light transmitting portion, the first light absorbing portion is formed on the side of the isolation structure away from the substrate; the first light transmitting portion, the opening structure, and the orthographic projection of the light emitting unit on the substrate at least partially overlap.

10. The display panel according to claim 9, characterized in that: The step of forming a first light absorption layer on a side of the isolation structure away from the substrate comprises: The first light absorbing portion is formed by in-situ growth on a surface of the isolation structure that is away from the substrate.

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