Cover plate assembly, display panel and preparation method therefor, and display device

Abstract

This application relates to a cover plate assembly, a display panel, a method for manufacturing the same, and a display device. The cover plate assembly includes a first sealing layer; a microlens array located on one side of the first sealing layer; the microlens array including a plurality of microlenses arranged at intervals; a first light-blocking structure located on the side of the first sealing layer facing the microlens array; the first light-blocking structure including a plurality of first light-transmitting holes corresponding to the plurality of microlenses; at least a portion of the orthographic projection of the microlens on the first sealing layer overlaps with the orthographic projection of the corresponding first light-transmitting hole on the first sealing layer. This application helps to solve the problem that other devices on the screen are easily damaged during the fabrication of the first light-blocking structure.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a cover plate assembly, a display panel and its preparation method, and a display device. Background Technology

[0002] With the continuous development of display technology, Micro-LED (Micro Light Emitting Diode) displays have advantages over OLED (Organic Light-Emitting Diode) displays, such as high brightness, wide color gamut, long lifespan, and fast response.

[0003] Transmittance and reflectance are important indicators of the characteristics of Micro-LED transparent displays. Since exposed metal components inside a Micro-LED transparent display affect the overall screen reflectance, a black adhesive is used to coat the metal components. However, current black adhesive manufacturing processes have the problem of easily damaging other components. Summary of the Invention

[0004] Therefore, it is necessary to provide a cover plate assembly, a display panel and its preparation method, and a display device, in order to improve the problem that the current vinyl manufacturing process can easily damage other devices.

[0005] In a first aspect, embodiments of this application provide a cover plate assembly, the cover plate assembly including a first sealing layer; a microlens array located on one side of the first sealing layer; the microlens array including a plurality of microlenses arranged at intervals; a first light-blocking structure located on the side of the first sealing layer facing the microlens array; the first light-blocking structure including a plurality of first light-transmitting holes corresponding to the plurality of microlenses; at least a portion of the orthographic projection of the microlens on the first sealing layer overlaps with the orthographic projection of the corresponding first light-transmitting hole on the first sealing layer.

[0006] Secondly, embodiments of this application provide a display panel, comprising: a first sealing layer; a microlens array located on one side of the first sealing layer; the microlens array comprising a plurality of microlenses arranged at intervals; a first light-blocking structure located on the side of the first sealing layer facing the microlens array; the first light-blocking structure comprising a plurality of first light-transmitting holes corresponding to the plurality of microlenses; at least a portion of the orthographic projection of the microlens on the first sealing layer overlapping the orthographic projection of the corresponding first light-transmitting hole on the first sealing layer; a plurality of light-emitting elements located on the side of the microlenses away from the first sealing layer; the plurality of light-emitting elements being disposed corresponding to the plurality of first light-transmitting holes.

[0007] Thirdly, embodiments of this application provide a method for manufacturing a display panel, specifically including the following steps:

[0008] Provide screen and cover plate assemblies;

[0009] Align and attach the screen body and the cover plate assembly.

[0010] Fourthly, embodiments of this application provide a display device, including the display panel described in the second aspect.

[0011] The cover plate assembly, display panel, and their manufacturing method and display device provided in this application embodiment form an integrated cover plate assembly by setting a first sealing layer, a microlens array, and a first light-blocking structure. Thus, during the manufacturing process of the display panel, the cover plate assembly and the screen body can be aligned and bonded together, avoiding the need to fabricate the first light-blocking structure on the screen body. This reduces the manufacturing difficulty of the first light-blocking structure and solves the problem of easily damaging other components on the screen body during the fabrication of the first light-blocking structure. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a partial cross-sectional structural diagram of a cover plate assembly provided in an embodiment of this application.

[0014] Figure 2 for Figure 1 A partial top view of the first light-blocking structure of the cover plate assembly shown.

[0015] Figure 3 for Figure 1 A partial top view of the microlens array of the cover plate assembly shown.

[0016] Figure 4 This is a partial cross-sectional structural diagram of another cover plate assembly provided in an embodiment of this application.

[0017] Figure 5 This is a partial cross-sectional structural diagram of another cover plate assembly provided in an embodiment of this application.

[0018] Figure 6 for Figure 1 The diagram shows the manufacturing process of the cover plate assembly.

[0019] Figure 7 This is a schematic diagram of the structure of a cover plate assembly and screen body of a display panel before they are bonded together, according to an embodiment of this application.

[0020] Figure 8 for Figure 7 The diagram shows the structure of the cover plate assembly and screen body after they are bonded together.

[0021] Figure 9 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application.

[0022] Figure 10 This is a schematic diagram of the structure of a cover plate assembly and screen body of another display panel provided in an embodiment of this application before bonding.

[0023] Figure 11 for Figure 10 The diagram shows the structure of the cover plate assembly and screen body after they are bonded together.

[0024] Figure 12 for Figure 10 A partial top view of the second light-blocking structure of the display panel shown.

[0025] Figure 13 This is a schematic flowchart illustrating a method for manufacturing a display panel according to an embodiment of this application.

[0026] Figure 14 This is a schematic diagram of the structure of a display device provided in an embodiment of this application.

[0027] Figure label:

[0028] 100. Display device; 10. Display panel; 1. Cover plate assembly; 11. First substrate; 12. First sealing layer; 13. Microlens array; 131. Microlens; 1311. First sub-part; 1312. Second sub-part; 14. First light-blocking structure; 14a. First light-transmitting hole; 14b. Second light-transmitting hole; 15. Second sealing layer; 16. First filling layer; 2. Screen body; 21. Second substrate; 22. Driving layer; 22a. Third light-transmitting hole; 23. Light-emitting unit; 231. Light-emitting element; 24. Second filling layer; 25. Second light-blocking structure; 25a. Fourth light-transmitting hole. Detailed Implementation

[0029] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements present. Furthermore, when a layer is referred to as being "below" another layer, it may be directly below it or there may be one or more light-emitting units present. It is also understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more light-emitting units present.

[0032] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0033] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0034] It should also be understood that, in interpreting an element, although not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of a particular value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0035] Furthermore, in the instruction manual, the phrase "planar distribution diagram" refers to the diagram when the target part is viewed from above, and the phrase "cross-sectional diagram" refers to the diagram when the target part is viewed from the side as a cross-section taken by vertically cutting the target part.

[0036] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0037] In related technologies, the black adhesive is fabricated using photolithography. On one hand, due to alignment errors during exposure and development, the mask opening size is designed to be larger than the LED size, leaving the surrounding metal without black adhesive shielding, resulting in poor anti-reflection performance. On the other hand, when using an ashing process to remove the black adhesive, the transparent filler layer is etched faster than the black adhesive under the same etching conditions due to the full-surface etching process, causing the filler layer surface to be affected by etching and resulting in ashing damage. Furthermore, the LED surface has a roughened structure that increases light extraction efficiency. Because the thickness of the black adhesive on the LED surface is inconsistent, completely ashing the black adhesive from the LED surface inevitably damages the efficiency-enhancing structure.

[0038] In view of at least one of the above-mentioned problems, embodiments of this application provide a cover plate assembly, a display panel, a method for manufacturing the same, and a display device. By setting a first sealing layer, a microlens array, and a first light-blocking structure on a first substrate, it is equivalent to fabricating (or integrating) the microlens array and the first light-blocking structure on the first substrate to form an integrated cover plate assembly. Thus, during the manufacturing process of the display panel, the cover plate assembly and the screen body can be aligned and bonded together, avoiding the need to fabricate the first light-blocking structure on the screen body. This reduces the manufacturing difficulty of the first light-blocking structure and solves the problem of easily damaging other components on the screen body during the fabrication of the first light-blocking structure.

[0039] Firstly, referring to Figure 1 , Figure 2 and Figure 3 As shown, this application embodiment provides a cover plate assembly 1, which includes a first substrate 11, a first sealing layer 12, a microlens array 13, and a first light-blocking structure 14. The first sealing layer 12 is located on one side of the first substrate 11. The microlens array 13 is located on the side of the first sealing layer 12 away from the first substrate 11. The microlens array 13 includes a plurality of microlenses 131 arranged at intervals. The first light-blocking structure 14 is located on the side of the first sealing layer 12 away from the first substrate 11. The first light-blocking structure 14 includes a plurality of first light-transmitting holes 14a corresponding to the plurality of microlenses 131. At least a portion of the orthographic projection of the microlens 131 on the first substrate 11 overlaps with the orthographic projection of the corresponding first light-transmitting hole 14a on the first substrate 11.

[0040] Specifically, the first substrate 11 can be a cover plate, and further, the first substrate 11 can be a transparent glass substrate. By providing a first sealing layer 12 on the first substrate 11, on the one hand, when fabricating the microlens array 13, the first sealing layer 12 can be directly patterned, thereby fabricating the microlens array 13 with the help of the first sealing layer 12; on the other hand, the first sealing layer 12 can seal or encapsulate the microlens array 13, improving the structural stability of the microlens array 13.

[0041] It is understood that the first light-blocking structure 14 can be a black matrix. The first light-blocking structure 14 not only blocks the metal film layer surrounding the light-emitting element 231, preventing the metal film layer from emitting light, but also blocks laterally propagating light, improving the halo effect. The multiple first light-transmitting holes 14a on the first light-blocking structure 14 can correspond one-to-one with the multiple microlenses 131 of the microlens array 13. Each first light-transmitting hole 14a corresponds to one light-emitting element 231, and the light emitted by the light-emitting element 231 is emitted through the first light-transmitting hole 14a and the microlens 131. In one embodiment, the orthographic projection of the microlens 131 on the first substrate 11 coincides with the orthographic projection of the corresponding first light-transmitting hole 14a on the first substrate 11. This ensures that all light in the first light-transmitting hole 14a can pass through the microlens 131, further improving the light extraction efficiency.

[0042] In one embodiment, the surface of the microlens 131 that contacts the first sealing layer 12 is curved, and the curved surface protrudes towards the first substrate 11. In this way, the light emitted by the light-emitting element 231 (especially wide-viewing-angle light) can be focused by the microlens 131 after passing through it, thereby improving the light extraction efficiency.

[0043] Furthermore, the refractive index n1 of the first sealing layer 12 and the refractive index n2 of the microlens 131 satisfy the following relationship: n2 > n1. Thus, the first sealing layer 12 and the microlens 131 can form a lens structure with different refractive indices, which is beneficial to further improve the light extraction efficiency.

[0044] In one embodiment, the cover plate assembly 1 further includes a second sealing layer 15, which is located at least on the side of the first light-blocking structure 14 away from the first substrate 11. By providing the second sealing layer 15, the first light-blocking structure 14 can be sealed, thereby improving the structural stability of the first light-blocking structure 14.

[0045] In one embodiment, the second sealing layer 15 is also located on the side of the microlens 131 facing away from the first substrate 11. In this way, the second sealing layer 15 can seal the microlens array 13, thereby improving the structural stability of the microlens array 13.

[0046] Furthermore, the refractive index n3 of the second sealing layer 15 and the refractive index n2 of the microlens 131 satisfy the following relationship: n2 > n3. Thus, the second sealing layer 15 and the microlens 131 can form a lens structure with different refractive indices, which is beneficial for further improving the light extraction efficiency.

[0047] Understandably, after the cover plate assembly 1 and the screen body 2 are aligned, the second sealing layer 15 also helps to hold the light-emitting element 231 in a specific position, thereby playing a "fixing" role for the light-emitting element 231.

[0048] In one embodiment, the refractive indices n1 of the first sealing layer 12, n3 of the second sealing layer 15, and n2 of the microlens 131 satisfy the following relationship: n2 - n1 < n2 - n3. Thus, the refractive indices of both the first sealing layer 12 and the second sealing layer 15 are less than the refractive index of the microlens 131. Consequently, the second sealing layer 15, the microlens 131, and the first sealing layer 12 can form a low-refractive / high-refractive / medium-refractive triple-layer lens structure, which is beneficial for further improving the light extraction efficiency.

[0049] In one embodiment, reference Figure 3 As shown, the orthographic projection of microlens 131 onto the first substrate 11 is strip-shaped. That is, viewed along the direction from the first substrate 11 to microlens 131, microlens 131 has a strip-shaped structure. Further, the orthographic projection of microlens 131 onto the first substrate 11 is rectangular.

[0050] It should be noted that the top view shape of the light-emitting element 231 is usually elongated (such as rectangular). By setting the microlens 131 as a strip structure, the shape of the microlens 131 can be matched with the shape of the light-emitting element 231, so that more light can be refracted by the microlens 131, thereby maximizing the light output efficiency.

[0051] In one embodiment, the first light-transmitting aperture 14a is projected onto the first substrate 11 in the shape of a strip. This allows the shape of the first light-transmitting aperture 14a to match the shape of the microlens 131, which helps to allow more light to be refracted by the microlens 131, thereby maximizing the light extraction efficiency.

[0052] In one embodiment, reference Figure 4 As shown, the cover plate assembly 1 also includes a first filling layer 16, which is located within the first light-transmitting hole 14a. A microlens 131 is located on the side of the first filling layer 16 closest to the first substrate 11. The refractive index n4 of the first filling layer 16 and the refractive index n2 of the microlens 131 satisfy the following relationship: n2 > n4. Thus, the first filling layer 16 and the microlens 131 can form a lens structure with different refractive indices, which is beneficial for further improving the light extraction efficiency.

[0053] It should be noted that by filling the first light-transmitting hole 14a with the first filling layer 16, the process engineers can better control the thickness of the first filling layer 16 during the fabrication of the cover plate assembly 1, thereby improving the light extraction effect of the lens structure composed of the first filling layer 16 and the microlens 131.

[0054] In one embodiment, the refractive index n1 of the first sealing layer 12, the refractive index n2 of the microlens 131, and the refractive index n4 of the first filling layer 16 satisfy the following relationship:

[0055] n2-n1<n2-n4

[0056] Thus, the refractive indices of the first sealing layer 12 and the first filling layer 16 are both less than the refractive index of the microlens 131. In this way, the first filling layer 16, the microlens 131 and the first sealing layer 12 can form a triple-layered lens structure with low refractive index, high refractive index and medium refractive index, which is beneficial to further improve the light output efficiency.

[0057] In one embodiment, the microlens 131 includes a filter material, meaning that the microlens 131 is reused as a filter. Thus, the microlens 131 has at least two functions: first, to increase the light extraction efficiency of the light-emitting element 231; and second, to select a specific range of wavelengths of light that are desired to pass through, while reflecting away other unwanted light. This arrangement helps to reduce the film layer structure in the display panel 10 and decrease the thickness of the display panel 10.

[0058] It should be noted that the material of the microlens 131 can be a quantum dot color filter material with a high refractive index.

[0059] It is understood that the microlens array 13 may include three types of microlenses 131, namely green microlenses 131, blue microlenses 131 and red microlenses 131. The green microlenses 131 include a green filter material with a high refractive index, the blue microlenses 131 include a blue filter material with a high refractive index, and the red microlenses 131 include a red filter material with a high refractive index.

[0060] In one embodiment, reference Figure 4 As shown, the microlens 131 includes a first sub-part 1311 and a second sub-part 1312. The first sub-part 1311 is located within the first light-transmitting hole 14a corresponding to the microlens 131, and the second sub-part 1312 is located on the side of the first sub-part 1311 closer to the first substrate 11. The dimension of the microlens 131 along the thickness direction of the first substrate 11 is larger than the dimension of the first light-blocking structure 14 along the thickness direction of the first substrate 11. The dimension of the second sub-part 1312 along the thickness direction of the first substrate 11 is smaller than the dimension of the first sealing layer 12 along the thickness direction of the first substrate 11.

[0061] It should be noted that the dimension of the first light-blocking structure 14 along the thickness direction of the first substrate 11 is the thickness of the first light-blocking structure 14, the dimension of the microlens 131 along the thickness direction of the first substrate 11 is the thickness of the microlens 131, and the dimension of the second sub-part 1312 along the thickness direction of the first substrate 11 is the thickness of the second sub-part 1312. Figure 4 In the diagram, H1 represents the thickness of the first light-blocking structure 14, H2 represents the thickness of the microlens 131, and H3 represents the thickness of the second sub-part 1312.

[0062] The above configuration, on the one hand, helps the microlens 131 to completely fill the space within the first light-transmitting hole 14a, thereby improving the connection stability between the microlens 131 and the first light-blocking structure 14; on the other hand, when manufacturing the microlens 131, the outer contour shape of the second sub-part 1312 of the microlens 131 can be formed on the first sealing layer 12 by imprinting, thus facilitating the fabrication of the microlens 131 on the first sealing layer 12.

[0063] In one embodiment, the thickness of the first light-blocking structure 14 is no greater than 5 μm. In this way, the thickness of the display panel 10 can be minimized while ensuring the light-blocking effect.

[0064] In one embodiment, reference Figure 2 As shown, the first light-blocking structure 14 is also provided with a second light-transmitting hole 14b, and part of the second sealing layer 15 is located inside the second light-transmitting hole 14b. In this way, the second light-transmitting hole 14b can transmit ambient light, which is beneficial to improving the light transmittance of the display panel 10.

[0065] It is understood that the first light-transmitting hole 14a and the second light-transmitting hole 14b can be arranged in any way, and the arrangement of the first light-transmitting hole 14a and the second light-transmitting hole 14b is not limited in the embodiments of this application.

[0066] In one embodiment, the first sealing layer 12 comprises an organic material. It is understood that the organic material has a certain degree of flexibility and conformability. The above arrangement is equivalent to giving the first sealing layer 12 a certain degree of flexibility and conformability. Before fabricating the microlens 131, the outer contour shape of the microlens 131 can be formed on the first sealing layer 12 by imprinting, thereby facilitating the formation of the microlens 131 with a raised curved surface on the first sealing layer 12.

[0067] In one embodiment, the second sealing layer 15 comprises an organic material. This configuration effectively gives the second sealing layer 15 a certain degree of flexibility and conformability, allowing it to be compressed and fill the gaps between the light-emitting elements 231 when the cover plate assembly 1 and the screen body 2 are attached, thereby fixing the light-emitting elements 231 in place.

[0068] In one embodiment, the refractive index n1 of the first sealing layer 12 is between 1.45 and 1.55. Exemplarily, n1 can be 1.45, 1.48, 1.50, 1.53, 1.55, or between any two of the above values.

[0069] In one embodiment, the refractive index n2 of the microlens 131 is between 1.55 and 1.7. Exemplarily, n2 can be 1.55, 1.58, 1.62, 1.65, 1.7, or between any two of the above values.

[0070] In one embodiment, the refractive index n3 of the second sealing layer 15 is between 1.38 and 1.42. Exemplarily, n3 can be 1.38, 1.40, 1.41, 1.42, or between any two of the above values.

[0071] In one embodiment, the refractive index n4 of the first filling layer 16 is between 1.45 and 1.55. Exemplarily, n4 can be 1.45, 1.48, 1.52, 1.55, or between any two of the above values.

[0072] The above configuration allows the second sealing layer 15, the microlens 131, and the first sealing layer 12 to form a triple-layered lens structure with low refractive index, high refractive index, and medium refractive index, thereby further improving the light extraction efficiency.

[0073] In one embodiment, reference Figure 6 As shown, the manufacturing process of the cover plate assembly 1 is as follows: First, a first sealing layer 12 is formed on the first substrate 11. Then, the first sealing layer 12 is imprinted to form the outer contour shape of the second sub-part 1312 of the microlens 131. Next, a first light-blocking structure 14 is formed on the first sealing layer 12. Then, a high-refractive-index material is filled to form a microlens array 13. Finally, a second sealing layer 15 is formed.

[0074] Secondly, referring to Figure 7 and Figure 8 As shown, this application embodiment provides a display panel 10, which includes a screen body 2 and a cover plate assembly 1 as described in any embodiment of the first aspect. The screen body 2 includes a second substrate 21, a driving layer 22, and a plurality of light-emitting elements 231; the driving layer 22 is located on one side of the second substrate 21, and the plurality of light-emitting elements 231 are located on the side of the driving layer 22 opposite to the second substrate 21. The cover plate assembly 1 is located on the side of the plurality of light-emitting elements 231 opposite to the second substrate 21; the plurality of light-emitting elements 231 are correspondingly disposed with a plurality of first light-transmitting holes 14a. Exemplarily, the light-emitting elements 231 can be LED elements. A driving circuit is disposed in the driving layer 22, and the driving circuit is electrically connected to the light-emitting elements 231 for driving the light-emitting elements 231 to emit light. The light-emitting elements 231 correspond one-to-one with the first light-transmitting holes 14a.

[0075] Specifically, the structure of the cover plate assembly 1 and the screen body 2 before they are attached is as follows: Figure 7 As shown, the structure after bonding is as follows Figure 8 As shown. According to Figure 7 and Figure 8The comparison shows that after bonding, the second sealing layer 15 is compressed, and the light-emitting element 231 is embedded in the second sealing layer 15. The second sealing layer 15 fills the space between adjacent light-emitting elements 231, fixing the light-emitting element 231. Furthermore, a thin layer of the second sealing layer 15 is retained between the light-emitting element 231 and the microlens 131. In this way, the second sealing layer 15, the microlens 131, and the first sealing layer 12 can form a three-layered lens structure with low refractive index, high refractive index, and medium refractive index, which is beneficial to further improve the light extraction efficiency.

[0076] In one embodiment, the driving layer 22 is provided with a third light-transmitting hole 22a, which corresponds to the second light-transmitting hole 14b on the first light-blocking structure 14. Thus, the second light-transmitting hole 14b and the third light-transmitting hole 22a can transmit ambient light, which helps to improve the light transmittance of the display panel 10.

[0077] Furthermore, the screen body 2 also includes a second filling layer 24, at least a portion of which is located within the second light-transmitting hole 14b. Thus, after the second filling layer 24 fills the second light-transmitting hole 14b, the structural stability of the screen body 2 can be improved.

[0078] It should be noted that the second filling layer 24 and the second sealing layer 15 can be made of the same material.

[0079] In one embodiment, reference Figure 9 As shown, a portion of the second filling layer 24 is also located between adjacent light-emitting elements 231. The refractive index n2 of the microlens 131, the refractive index n4 of the first filling layer 16 of the cover plate assembly 1, and the refractive index n5 of the second filling layer 24 satisfy the following relationship: n2-n4>n2-n5. In this way, lens structures with different refractive indices can be formed, which is beneficial to improving the light extraction efficiency.

[0080] In one embodiment, the refractive index n5 of the second filling layer 24 is between 1.45 and 1.55. Exemplarily, n5 can be 1.45, 1.48, 1.50, 1.53, 1.55, or between any two of the above values.

[0081] In one embodiment, reference Figure 10 , Figure 11 and Figure 12 As shown, the screen 2 includes multiple light-emitting units 23, and each light-emitting unit 23 includes multiple light-emitting elements 231. Specifically, the light-emitting unit 23 includes green light-emitting elements 231, blue light-emitting elements 231, and red light-emitting elements 231.

[0082] Furthermore, referring to Figure 11 and Figure 12As shown, the screen body 2 also includes a second light-blocking structure 25, which encloses and forms a plurality of fourth light-transmitting holes 25a. The plurality of fourth light-transmitting holes 25a correspond one-to-one with a plurality of light-emitting units 23, and each light-emitting unit 23 is located in the corresponding fourth light-transmitting hole 25a. The second light-blocking structure 25 can be a black matrix.

[0083] By setting a second light-blocking structure 25, the lateral propagation of light between adjacent light-emitting units 23 can be blocked, thus improving the halo effect.

[0084] Thirdly, referring to Figure 13 As shown in the figure, this application embodiment provides a method for manufacturing a display panel 10, which specifically includes the following steps:

[0085] S100: Provide the screen body 2 and the cover assembly 1 from the first aspect. It should be noted that the cover assembly 1 may or may not include the second sealing layer 15. When the cover assembly 1 does not include the second sealing layer 15, the second sealing layer 15 may be disposed on the screen body 2.

[0086] S200: Align and attach the screen 2 and cover plate assembly 1.

[0087] Specifically, the structure after the screen body 2 and the cover plate assembly 1 are aligned is as follows: Figure 10 As shown, the structure after bonding is as follows Figure 11 As shown. The display panel 10 and its fabrication method provided in this application embodiment are equivalent to fabricating (or integrating) the microlens array 13 and the first light-blocking structure 14 on the first substrate 11 to form an integrated cover plate assembly 1. In this way, during the fabrication of the display panel 10, the cover plate assembly 1 and the screen body 2 can be aligned and bonded, avoiding the need to fabricate the first light-blocking structure 14 on the screen body 2, thereby reducing the fabrication difficulty of the first light-blocking structure 14 and solving the problem of easily damaging other devices on the screen body 2 when fabricating the first light-blocking structure 14.

[0088] Fourthly, refer to Figure 14 As shown, this application provides a display device 100, including the display panel 10 in the second aspect.

[0089] The display device 100 can be a laptop computer, mobile phone, wireless device, personal digital assistant (PDA), handheld or portable computer, GPS receiver / navigator, camera, MP4 video player, camcorder, game console, watch, clock, calculator, TV monitor, flat panel display, computer monitor, car display (e.g., odometer display), navigator, cockpit controller and / or display, camera view display (e.g., display of a rearview camera in a vehicle), electronic photograph, electronic billboard or sign, projector, etc.

[0090] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cover plate assembly, characterized in that, include: First sealing layer; A microlens array is located on one side of the first sealing layer; the microlens array includes multiple microlenses arranged at intervals; A first light-blocking structure is located on the side of the first sealing layer facing the microlens array; the first light-blocking structure includes a plurality of first light-transmitting holes corresponding to the plurality of microlenses; At least a portion of the orthographic projection of the microlens on the first sealing layer overlaps with the orthographic projection of the first light-transmitting hole on the first sealing layer.

2. The cover plate assembly according to claim 1, characterized in that, The surface of the microlens that contacts the first sealing layer is curved, and the curved surface protrudes toward the first sealing layer; The refractive index n1 of the first sealing layer and the refractive index n2 of the microlens satisfy the following relationship: n2 > n1.

3. The cover plate assembly according to claim 1, characterized in that, The cover plate assembly further includes a second sealing layer, which is located at least on the side of the first light-blocking structure away from the first sealing layer.

4. The cover plate assembly according to claim 3, characterized in that, The second sealing layer is also located on the side of the microlens opposite to the first sealing layer; The refractive index n3 of the second sealing layer and the refractive index n2 of the microlens satisfy the following relationship: n2 > n3.

5. The cover plate assembly according to claim 3, characterized in that, The refractive index n1 of the first sealing layer, the refractive index n3 of the second sealing layer, and the refractive index n2 of the microlens satisfy the following relationship: n2-n1 < n2-n3.

6. The cover plate assembly according to claim 1, characterized in that, The cover plate assembly further includes a first filling layer, which is located inside the first light-transmitting hole, and the microlens is located on the side of the first filling layer near the first sealing layer. The refractive index n4 of the first filling layer and the refractive index n2 of the microlens satisfy the following relationship: n2 > n4.

7. The cover plate assembly according to claim 6, characterized in that, The refractive index n1 of the first sealing layer, the refractive index n2 of the microlens, and the refractive index n4 of the first filling layer satisfy the following relationship: n2-n1<n2-n4.

8. The cover plate assembly according to claim 1, characterized in that, The orthographic projection of the microlens onto the first sealing layer is strip-shaped; And / or, the orthographic projection of the first light-transmitting hole onto the first sealing layer is strip-shaped.

9. The cover plate assembly according to claim 1, characterized in that, The microlens includes a filter material.

10. The cover plate assembly according to claim 1, characterized in that, The microlens includes a first sub-part and a second sub-part, the first sub-part being located within the first light-transmitting hole corresponding to the microlens, and the second sub-part being located on the side of the first sub-part closer to the first sealing layer. The dimension of the microlens along the thickness direction is larger than the dimension of the first light-blocking structure along the thickness direction; The second sub-part has a smaller dimension along the thickness direction than the first sealing layer.

11. The cover plate assembly according to claim 3, characterized in that, The first light-blocking structure is also provided with a second light-transmitting hole, and part of the second sealing layer is located inside the second light-transmitting hole.

12. The cover plate assembly according to claim 3, characterized in that, The first sealing layer comprises an organic material; and / or, the second sealing layer comprises an organic material.

13. The cover plate assembly according to claim 1, characterized in that, It also includes a first substrate, which is located on the side of the first sealing layer opposite to the microlens array.

14. A display panel, characterized in that, include: First sealing layer; A microlens array is located on one side of the first sealing layer; the microlens array includes multiple microlenses arranged at intervals; A first light-blocking structure is located on the side of the first sealing layer facing the microlens array; the first light-blocking structure includes a plurality of first light-transmitting holes corresponding to the plurality of microlenses; At least a portion of the orthographic projection of the microlens on the first sealing layer overlaps with the orthographic projection of the corresponding first light-transmitting hole on the first sealing layer; Multiple light-emitting elements are located on the side of the microlens that is away from the first sealing layer; The plurality of light-emitting elements are arranged corresponding to the plurality of first light-transmitting holes.

15. The display panel according to claim 14, characterized in that, The display panel further includes a driving layer located on the side of the plurality of light-emitting elements away from the first sealing layer.

16. The display panel according to claim 15, characterized in that, The display panel further includes a first substrate and a second substrate; The first substrate is located on the side of the first sealing layer opposite to the microlens array; The second substrate is located on the side of the driving layer opposite to the plurality of light-emitting elements.

17. The display panel according to claim 14, characterized in that, The surface of the microlens that contacts the first sealing layer is curved, and the curved surface protrudes toward the first sealing layer; The refractive index n1 of the first sealing layer and the refractive index n2 of the microlens satisfy the following relationship: n2 > n1.

18. The display panel according to claim 14 or 15, characterized in that, The display panel further includes a second sealing layer, which is located at least on the side of the first light-blocking structure away from the first sealing layer.

19. The display panel according to claim 18, characterized in that, The second sealing layer is also located on the side of the microlens opposite to the first sealing layer; The refractive index n3 of the second sealing layer and the refractive index n2 of the microlens satisfy the following relationship: n2 > n3.

20. The display panel according to claim 18, characterized in that, The refractive index n1 of the first sealing layer, the refractive index n3 of the second sealing layer, and the refractive index n2 of the microlens satisfy the following relationship: n2-n1 < n2-n3.

21. The display panel according to claim 14, characterized in that, The display panel further includes a first filling layer, which is located inside the first light-transmitting hole, and the microlens is located on the side of the first filling layer near the first sealing layer. The refractive index n4 of the first filling layer and the refractive index n2 of the microlens satisfy the following relationship: n2 > n4.

22. The display panel according to claim 21, characterized in that, The refractive index n1 of the first sealing layer, the refractive index n2 of the microlens, and the refractive index n4 of the first filling layer satisfy the following relationship: n2-n1<n2-n4.

23. The display panel according to claim 14, characterized in that, The orthographic projection of the microlens onto the first sealing layer is strip-shaped; And / or, the orthographic projection of the first light-transmitting hole onto the first sealing layer is strip-shaped.

24. The display panel according to claim 14, characterized in that, The microlens includes a filter material.

25. The display panel according to claim 14, characterized in that, The microlens includes a first sub-part and a second sub-part, the first sub-part being located within the first light-transmitting hole corresponding to the microlens, and the second sub-part being located on the side of the first sub-part closer to the first sealing layer. The dimension of the microlens along the thickness direction is larger than the dimension of the first light-blocking structure along the thickness direction; The second sub-part has a smaller dimension along the thickness direction than the first sealing layer.

26. The display panel according to claim 18, characterized in that, The first light-blocking structure is also provided with a second light-transmitting hole, and part of the second sealing layer is located inside the second light-transmitting hole.

27. The display panel according to claim 26, characterized in that, The second light-transmitting hole allows ambient light to pass through.

28. The display panel according to claim 26, characterized in that, The driving layer is provided with a third light-transmitting hole, which is corresponding to the second light-transmitting hole on the first light-blocking structure.

29. The display panel according to claim 26, characterized in that, The display panel further includes a second filling layer, at least a portion of which is located within the second light-transmitting hole.

30. The display panel according to claim 14, characterized in that, The display panel further includes a first filling layer and a second filling layer; The first filling layer is located inside the first light-transmitting hole, and the microlens is located on the side of the first filling layer near the first sealing layer; At least a portion of the second filling layer is located between adjacent light-emitting elements; The refractive index n2 of the microlens, the refractive index n4 of the first filling layer, and the refractive index n5 of the second filling layer satisfy the following relationship: n2-n4>n2-n5.

31. The display panel according to claim 18, characterized in that, The first sealing layer comprises an organic material; and / or, the second sealing layer comprises an organic material.

32. The display panel according to claim 14, characterized in that, The display panel includes a plurality of light-emitting units, and at least one of the light-emitting units includes a plurality of light-emitting elements; the display panel also includes a second light-blocking structure, the second light-blocking structure enclosing a plurality of fourth light-transmitting holes, the plurality of fourth light-transmitting holes corresponding one-to-one with the plurality of light-emitting units, and each light-emitting unit being located in the corresponding fourth light-transmitting hole.

33. The display panel according to claim 14, characterized in that, The display panel includes a cover plate assembly consisting of a first substrate and the first sealing layer thereon, the microlens array, and the first light-blocking structure; and / or, the display panel includes a second substrate and the driving layer thereon, and a screen body consisting of the plurality of light-emitting elements.

34. A method for manufacturing a display panel, characterized in that, include: Provide screen and cover plate assemblies; Align and attach the screen body and the cover plate assembly.

35. A display device comprising a display panel as described in any one of claims 14-33.

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