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

Abstract

The invention relates to a cover plate assembly, a display panel, a preparation method of the display panel and a display device. The cover plate assembly comprises a first substrate, a first sealing layer, a microlens array and a first light blocking structure. The first sealing layer is located on one side of the first substrate; the micro-lens array is positioned on one side, far away from the first substrate, of the first sealing layer; the micro lens array comprises a plurality of micro lenses which are arranged at intervals; the first light blocking structure is located on the side, away from the first substrate, of the first sealing layer. The first light blocking structure comprises a plurality of first light holes corresponding to the plurality of micro lenses; at least part of orthographic projections of the micro lenses on the first substrate are overlapped with orthographic projections of the corresponding first light holes on the first substrate. The problem that other devices on the screen body are easily damaged when the first light blocking structure is manufactured can be solved.

Description

Technical Field

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

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

[0003] Transmittance and reflectivity are key performance indicators for transparent Micro-LED displays. Because exposed metal components within transparent Micro-LED displays affect the overall reflectivity of the screen, they are coated with vinyl. However, current vinyl production processes can easily damage other components. Summary of the Invention

[0004] Based on this, it is necessary to provide a cover assembly, a display panel and a preparation method thereof, and a display device, aiming to improve the problem that the current vinyl production process is prone to damage other devices.

[0005] In a first aspect, an embodiment of the present application provides a cover assembly, comprising a first substrate, a first sealing layer, a microlens array, and a first light-blocking structure. The first sealing layer is located on one side of the first substrate; the microlens array is located on a side of the first sealing layer away from the first substrate; the microlens array includes a plurality of microlenses arranged at intervals; the first light-blocking structure is located on a side of the first sealing layer away from the first substrate; 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 microlenses on the first substrate overlaps with the orthographic projection of the corresponding first light-transmitting holes on the first substrate.

[0006] In a second aspect, embodiments of the present application provide a display panel comprising a screen and the cover plate assembly of the first aspect. The screen comprises a second substrate, a drive layer, and a plurality of light-emitting elements; the drive layer is located on one side of the second substrate, and the plurality of light-emitting elements are located on a side of the drive layer facing away from the second substrate. The cover plate assembly is located on a side of the plurality of light-emitting elements facing away from the second substrate; the plurality of light-emitting elements are arranged corresponding to the plurality of first light-transmitting apertures.

[0007] In a third aspect, an embodiment of the present application provides a method for manufacturing a display panel, which specifically includes the following steps:

[0008] Provide a screen body and the cover plate assembly of the first aspect;

[0009] Align and fit the screen body and the cover assembly.

[0010] In a fourth aspect, an embodiment of the present application provides a display device, comprising the display panel in the second aspect.

[0011] The cover plate assembly, display panel, and method for manufacturing the same, as well as the display device provided in the embodiments of the present application, are constructed by disposing a first sealing layer, a microlens array, and a first light-blocking structure on a first substrate. This effectively creates (or integrates) the microlens array and the first light-blocking structure on the first substrate, forming an integrated cover plate assembly. Thus, during the display panel manufacturing process, the cover plate assembly and the screen body can simply be aligned and bonded together, avoiding the need to fabricate the first light-blocking structure on the screen body. This reduces the difficulty of fabricating the first light-blocking structure and solves the problem of easily damaging other components on the screen during fabrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the drawings required for use in the description of the embodiments or exemplary embodiments 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 any creative work.

[0013] Figure 1 A schematic diagram of a partial cross-sectional structure of a cover plate assembly provided in one embodiment of the present application.

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

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

[0016] Figure 4 A schematic diagram of a partial cross-sectional structure of another cover assembly provided in one embodiment of the present application.

[0017] Figure 5 A schematic diagram of a partial cross-sectional structure of another cover plate assembly provided in one embodiment of the present application.

[0018] Figure 6 for Figure 1 Schematic diagram of the manufacturing process of the cover assembly shown.

[0019] Figure 7 This is a schematic structural diagram of a cover assembly and a screen body of a display panel provided in one embodiment of the present application before being bonded together.

[0020] Figure 8 for Figure 7 The schematic diagram of the structure of the cover assembly and the screen body after bonding is shown.

[0021] Figure 9 A schematic diagram of a partial cross-sectional structure of another display panel provided in an embodiment of the present application.

[0022] Figure 10 This is a schematic structural diagram of another display panel cover assembly and screen body before bonding provided in one embodiment of the present application.

[0023] Figure 11 for Figure 10 The schematic diagram of the structure of the cover assembly and the screen body after bonding is shown.

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

[0025] Figure 13 A schematic flow chart of a method for manufacturing a display panel provided in one embodiment of the present application.

[0026] Figure 14 A schematic structural diagram of a display device provided in one embodiment of the present application.

[0027] Reference numerals:

[0028] 100. Display device; 10. Display panel; 1. Cover assembly; 11. First substrate; 12. First sealing layer; 13. Microlens array; 131. Microlens; 1311. First subunit; 1312. Second subunit; 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. Drive 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 DESCRIPTION

[0029] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant 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 can be directly on the other element or intervening elements may be present. Furthermore, when a layer is referred to as being "under" another layer, it can be directly below or one or more light-emitting units may be present. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or one or more light-emitting units may be present.

[0032] In the case of using “including,” “having,” and “comprising” described herein, another component may be added unless a clear limiting term such as “only,” “consisting of,” etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as having one number.

[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 only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this application.

[0034] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately," "approximately," or "substantially" can mean within one or more standard deviations, and is not limited here.

[0035] Furthermore, in the specification, the phrase “planar distribution diagram” refers to a drawing when the target portion is viewed from above, and the phrase “cross-sectional diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0036] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0037] In the related art, black glue is produced by photolithography. On the one hand, due to the alignment error in exposure and development, the mask opening design size is larger than the LED size, so that the metal around the LED is not blocked by black glue, resulting in poor anti-reflection effect. On the other hand, when the black glue is removed by the ashing process, since the ashing process etches the entire surface, the etching rate of the transparent filling layer is faster than that of the black glue under the same etching conditions, resulting in the surface of the filling layer being affected by etching and causing ashing damage. On the other hand, the surface of the LED has a roughened structure that increases the light output efficiency. Since the coverage thickness of the black glue on the LED surface is inconsistent, it is inevitable to damage the efficiency-enhancing structure if the black glue on the LED surface is to be completely ashed.

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

[0039] First, refer to Figure 1 、 Figure 2 and Figure 3 As shown, an embodiment of the present application provides a cover 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 part 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 the 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 utilizing the first sealing layer 12 to fabricate the microlens array 13; on the other hand, the first sealing layer 12 can seal or encapsulate the microlens array 13, thereby improving the structural stability of the microlens array 13.

[0041] It is understandable that the first light blocking structure 14 can be a black matrix. The first light blocking structure 14 can not only block the metal film layer outside the light emitting element 231 to prevent the metal film layer from emitting light, but also can block the laterally propagating light to improve the halo. The multiple first light-transmitting holes 14a on the first light blocking structure 14 and the multiple microlenses 131 of the microlens array 13 can be one-to-one corresponding, and each first light-transmitting hole 14a corresponds to a 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. In this way, it is ensured that the light in the first light-transmitting hole 14a can pass through the microlens 131, further improving the light output rate.

[0042] In one embodiment, the surface of the microlens 131 that contacts the first sealing layer 12 is a curved surface, and the curved surface is convex toward the first substrate 11. In this way, the light emitted by the light-emitting element 231 (especially the light with a wide viewing angle) can be converged by the microlens 131 after passing through the microlens 131, 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. In this way, 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 assembly 1 further includes a second sealing layer 15, which is located at least on a 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 further 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. In this way, the second sealing layer 15 and the microlens 131 can form a lens structure with different refractive indices, which is beneficial to further improve the light extraction efficiency.

[0047] It is understandable that after the cover assembly 1 and the screen body 2 are aligned, the second sealing layer 15 also helps to keep the light emitting element 231 in a specific position, thereby playing a "fixing" role on the light emitting element 231.

[0048] In one embodiment, the refractive index n1 of the first sealing layer 12, the refractive index n3 of the second sealing layer 15, and the refractive index n2 of the microlens 131 satisfy the following relationship: n2-n1<n2-n3. Thus, the refractive indices of the first sealing layer 12 and the second sealing layer 15 are all lower than the refractive index of the microlens 131. Thus, the second sealing layer 15, the microlens 131, and the first sealing layer 12 form a three-layer lens structure with low refraction, high refraction, and medium refraction, further improving light extraction efficiency.

[0049] In one embodiment, referring to Figure 3 As shown, the orthographic projection of the microlens 131 on the first substrate 11 is a stripe. That is, when viewed from the first substrate 11 to the microlens 131, the microlens 131 is a stripe-shaped structure. Furthermore, the orthographic projection of the microlens 131 on the first substrate 11 is a rectangle.

[0050] It should be noted that the light-emitting element 231 is typically an elongated strip (e.g., a rectangle) when viewed from above. By configuring the microlens 131 as a strip, the shape of the microlens 131 can be matched to the shape of the light-emitting element 231, allowing more light to be refracted by the microlens 131, thereby maximizing light extraction efficiency.

[0051] In one embodiment, the orthographic projection of the first light-transmitting hole 14a on the first substrate 11 is a strip shape. In this way, the shape of the first light-transmitting hole 14a can match the shape of the microlens 131, which helps to refract more light through the microlens 131, thereby maximizing the light extraction efficiency.

[0052] In one embodiment, referring to Figure 4 As shown, the cover assembly 1 further includes a first filling layer 16, which is located within the first light-transmitting hole 14a. The microlenses 131 are 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 microlenses 131 satisfy the following relationship: n2 > n4. This allows the first filling layer 16 and the microlenses 131 to form a lens structure with different refractive indices, further improving light extraction efficiency.

[0053] It should be noted that by filling the first light-transmitting hole 14a with the first filling layer 16, in the process of manufacturing the cover assembly 1, it is helpful for the process personnel to control the thickness of the first filling layer 16, thereby making the light extraction effect of the lens structure composed of the first filling layer 16 and the microlens 131 better.

[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] In this way, the refractive index of the first sealing layer 12 and the first filling layer 16 are both smaller 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 low-refractive / high-refractive / medium-refractive triple-layer lens structure, which is beneficial to further improve the light output rate.

[0057] In one embodiment, the microlens 131 includes a filter material, meaning that the microlens 131 functions as a filter. This allows the microlens 131 to perform at least two functions: first, improving the light output efficiency of the light-emitting element 231; and second, selecting light within a specific wavelength range to pass while reflecting other undesirable light. This arrangement facilitates reducing the number of film layers in the display panel 10 and thus 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 can be understood that the microlens array 13 can include three types of microlenses 131, namely green microlenses 131, blue microlenses 131 and red microlenses 131. The green microlenses 131 include green filter materials with high refractive index, the blue microlenses 131 include blue filter materials with high refractive index, and the red microlenses 131 include red filter materials with high refractive index.

[0060] In one embodiment, referring to Figure 4 As shown, the microlens 131 includes a first sub-portion 1311 and a second sub-portion 1312. The first sub-portion 1311 is located within the first light-transmitting hole 14a corresponding to the microlens 131, and the second sub-portion 1312 is located on the side of the first sub-portion 1311 closer to the first substrate 11. The dimension of the microlens 131 along the thickness direction of the first substrate 11 is greater 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-portion 1312 along the thickness direction of the first substrate 11 is less 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 micro lens 131 along the thickness direction of the first substrate 11 is the thickness of the micro lens 131, and the dimension of the second sub-portion 1312 along the thickness direction of the first substrate 11 is the thickness of the second sub-portion 1312. Figure 4 In FIG. 1 , 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-portion 1312 .

[0062] The above arrangement, on the one hand, facilitates the microlens 131 to completely fill the space within the first light-transmitting hole 14 a, 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-portion 1312 of the microlens 131 can be manufactured on the first sealing layer 12 by embossing, thereby facilitating the manufacture of the microlens 131 on the first sealing layer 12 .

[0063] In one embodiment, the thickness of the first light-blocking structure 14 is not greater than 5 μm. In this way, the thickness of the display panel 10 can be reduced to the maximum extent while ensuring the light-blocking effect.

[0064] In one embodiment, referring to Figure 2 As shown, the first light blocking structure 14 is further provided with a second light-transmitting hole 14b, and a portion of the second sealing layer 15 is located in 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 understandable that the first light-transmitting holes 14 a and the second light-transmitting holes 14 b may be arranged in any manner, and the embodiment of the present application does not limit the arrangement of the first light-transmitting holes 14 a and the second light-transmitting holes 14 b .

[0066] In one embodiment, the first sealing layer 12 comprises an organic material. It is understood that organic materials have a certain degree of flexibility and conformability. The above configuration is equivalent to providing the first sealing layer 12 with a certain degree of flexibility and conformability. Before forming the microlenses 131, the outer contour of the microlenses 131 can be formed on the first sealing layer 12 by embossing, thereby facilitating the formation of microlenses 131 having convex curved surfaces on the first sealing layer 12.

[0067] In one embodiment, the second sealing layer 15 comprises an organic material. This configuration provides the second sealing layer 15 with a certain degree of flexibility and conformability. When the cover assembly 1 and the screen body 2 are attached, the second sealing layer 15 can be squeezed and fill the gaps between the light-emitting elements 231, thereby securing the light-emitting elements 231.

[0068] In one embodiment, the refractive index n1 of the first sealing layer 12 is between 1.45 and 1.55. For example, 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. For example, 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. For example, 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. For example, n4 can be 1.45, 1.48, 1.52, 1.55, or between any two of the above values.

[0072] The above arrangement enables the second sealing layer 15 , the microlens 131 and the first sealing layer 12 to form a three-layer lens structure of low refraction, high refraction and medium refraction, thereby further improving the light extraction efficiency.

[0073] In one embodiment, referring to Figure 6 As shown, the manufacturing process of the cover assembly 1 is as follows: first, a first sealing layer 12 is made on the first substrate 11, and then the first sealing layer 12 is embossed to make the outer contour shape of the second sub-portion 1312 of the microlens 131 on the first sealing layer 12, and then a first light-blocking structure 14 is made on the first sealing layer 12, and then a high-refractive material is filled to form a microlens array 13, and finally a second sealing layer 15 is made.

[0074] Secondly, refer to Figure 7 and Figure 8 As shown, an embodiment of the present application provides a display panel 10, which includes a screen body 2 and a cover assembly 1 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 away from the second substrate 21. The cover assembly 1 is located on the side of the plurality of light-emitting elements 231 away from the second substrate 21; the plurality of light-emitting elements 231 are arranged corresponding to the plurality of first light-transmitting holes 14a. Exemplarily, the light-emitting elements 231 can be LED elements. A driving circuit is provided 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 to the first light-transmitting holes 14a.

[0075] Specifically, the structure of the cover assembly 1 and the screen body 2 before being attached is as follows: Figure 7 As shown, the structure after bonding is as Figure 8 As shown. Figure 7 and Figure 8As can be seen by comparison, after lamination, the second sealing layer 15 is squeezed, and the light-emitting elements 231 are embedded in the second sealing layer 15. The second sealing layer 15 fills the space between adjacent light-emitting elements 231 and secures the light-emitting elements 231. Furthermore, a thin layer of second sealing layer 15 remains between the light-emitting elements 231 and the microlenses 131. In this way, the second sealing layer 15, microlenses 131, and first sealing layer 12 form a three-layer lens structure with low / high / medium refraction, which further improves light extraction efficiency.

[0076] In one embodiment, a third light-transmitting hole 22a is provided on the driving layer 22, and the third light-transmitting hole 22a is provided corresponding to the second light-transmitting hole 14b on the first light-blocking structure 14. In this way, the second light-transmitting hole 14b and the third light-transmitting hole 22a can transmit ambient light, which is beneficial to improving the light transmittance of the display panel 10.

[0077] Furthermore, the screen body 2 further includes a second filling layer 24, at least a portion of which is located in 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 may be made of the same material.

[0079] In one embodiment, referring to Figure 9 As shown, portions of the second filling layer 24 are 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 assembly 1, and the refractive index n5 of the second filling layer 24 satisfy the following relationship: n2 - n4 > n2 - n5. This allows for the formation of lens structures with varying refractive indices, which helps improve light extraction efficiency.

[0080] In one embodiment, the refractive index n5 of the second filling layer 24 is between 1.45 and 1.55. For example, 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, referring to Figure 10 、 Figure 11 and Figure 12 As shown, the screen 2 includes a plurality of light emitting units 23, and each light emitting unit 23 includes a plurality of light emitting elements 231. Specifically, the light emitting unit 23 includes a green light emitting element 231, a blue light emitting element 231 and a red light emitting element 231.

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

[0083] By providing the second light blocking structure 25 , it is possible to block the lateral propagation of light between adjacent light emitting units 23 , thereby improving halo.

[0084] Thirdly, refer to Figure 13 As shown, the embodiment of the present application provides a method for manufacturing a display panel 10, and the manufacturing method specifically includes the following steps:

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

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

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

[0088] Fourthly, refer to Figure 14 As shown, an embodiment of the present 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, a mobile phone, a wireless device, a personal digital assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a camcorder, a game console, a watch, a clock, a calculator, a television monitor, a flat-panel display, a computer monitor, a car display (e.g., an odometer display, etc.), a navigator, a cockpit controller and / or display, a display of a camera view (e.g., a display of a rearview camera in a vehicle), an electronic photo, an electronic billboard or sign, a projector, etc.

[0090] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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 above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A cover plate assembly, characterized in that: include: a first substrate; A first sealing layer, located on one side of the first substrate; a microlens array, located on a side of the first sealing layer away from the first substrate; The microlens array includes a plurality of microlenses arranged at intervals; A first light-blocking structure is located on a side of the first sealing layer away from the first substrate; the first light-blocking structure comprises 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 substrate overlaps with the orthographic projection of the corresponding first light-transmitting hole on the first substrate.

2. The cover plate assembly according to claim 1, characterized in that: The surface of the microlens in contact with the first sealing layer is a curved surface, and the curved surface is convex toward the first substrate; 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, and the second sealing layer is at least located on a side of the first light blocking structure away from the first substrate.

4. The cover plate assembly according to claim 3, characterized in that: The second sealing layer is also located on a side of the microlens facing away from the first substrate; 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, the first filling layer is located in the first light-transmitting hole, and the microlens is located on a side of the first filling layer close to the first substrate; 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 on the first substrate is in the shape of a strip; And / or, the orthographic projection of the first light-transmitting hole on the first substrate is in a strip shape.

9. The cover plate assembly according to claim 1, characterized in that: The microlenses include a light filtering material.

10. The cover plate assembly according to claim 1, characterized in that: The microlens comprises a first sub-portion and a second sub-portion, the first sub-portion is located in the first light-transmitting hole corresponding to the microlens, and the second sub-portion is located on a side of the first sub-portion close to the first substrate; The size of the microlens along the thickness direction of the first substrate is greater than the size of the first light blocking structure along the thickness direction of the first substrate; A size of the second sub-portion along a thickness direction of the first substrate is smaller than a size of the first sealing layer along the thickness direction of the first substrate.

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

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

13. A display panel, characterized in that: include: The screen body comprises a second substrate, a driving layer and a plurality of light-emitting elements; The driving layer is located on one side of the second substrate, and the plurality of light emitting elements are located on a side of the driving layer away from the second substrate; The cover assembly as described in any one of claims 1 to 12 is located on a side of the plurality of light-emitting elements away from the second substrate; the plurality of light-emitting elements are arranged corresponding to the plurality of first light-transmitting holes.

14. The display panel according to claim 13, characterized in that: The driving layer is provided with a third light-transmitting hole, and the third light-transmitting hole is arranged corresponding to the second light-transmitting hole on the first light-blocking structure; the screen body also includes a second filling layer, and at least part of the second filling layer is located in the second light-transmitting hole.

15. The display panel according to claim 14, characterized in that: Part of the second filling layer is also located between adjacent light-emitting elements; The refractive index n2 of the microlens, the refractive index n4 of the first filling layer of the cover plate assembly, and the refractive index n5 of the second filling layer satisfy the following relationship: n2-n4>n2-n5.

16. The display panel according to claim 13, characterized in that: The screen body includes a plurality of light-emitting units, each of which includes a plurality of light-emitting elements; the screen body also includes a second light-blocking structure, which encloses a plurality of fourth light-transmitting holes, and the plurality of fourth light-transmitting holes correspond one-to-one to the plurality of light-emitting units, and each of the light-emitting units is located in the corresponding fourth light-transmitting hole.

17. A method for preparing a display panel, characterized in that: include: Provide a screen body and a cover plate assembly as described in any one of claims 1 to 12; Align and fit the screen body and the cover plate assembly.

18. A display device comprising the display panel according to any one of claims 13 to 16.

Images