Display panel and preparation method therefor, and display apparatus

Abstract

Disclosed in the embodiments of the present application are a display panel and a preparation method therefor, and a display apparatus. The display panel disclosed in the embodiments of the present application comprises: an array substrate, which comprises a backplane and a plurality of display units that are arranged on the backplane; and a light-effect layer, which covers the side of the backplane that faces the plurality of display units. The light-effect layer comprises: a plurality of reflective portions, which are arranged in a manner of corresponding to the plurality of display units on a one-to-one basis, wherein each of the plurality of reflective portions surrounds the corresponding display unit among the plurality of display units and exposes the end of the display unit that faces away from the backplane, and the plurality of reflective portions are arranged at intervals; and the light-effect layer further comprises light-shielding portions filled among the plurality of reflective portions. The display panel provided in the embodiments of the present application can reduce the reflectivity of a screen, and increase the display brightness of the display screen.

Description

Display panel, manufacturing method thereof, and display device Technical Field

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

[0002] Non-transparent Micro LED (Micro Light Emitting Diode) displays require relatively high ambient contrast and relatively low reflectivity to achieve better image quality. Existing technologies use black light-absorbing materials or circular polarizers for packaging to reduce the reflectivity of displays. However, these materials absorb both reflected light and some of the light emitted by the Micro LED chips. Therefore, while reducing reflectivity, they also reduce display brightness, affecting display quality. Furthermore, increasing display brightness can increase power consumption. Technical issues

[0003] Therefore, there is an urgent need to provide a new display panel structure to improve the problem in the prior art that reducing the reflectivity will affect the normal brightness of the screen and increase energy consumption. Technical Solutions

[0004] Therefore, in order to overcome at least some of the defects in the prior art, the embodiments of the present application provide a display panel, a method for preparing a display panel, and a display device, which can reduce the screen reflectivity while improving the display brightness of the display screen.

[0005] One embodiment of the present application provides a display panel, comprising: an array substrate, the array substrate comprising a backplane and multiple groups of display units arranged on the backplane; a light effect layer, covering the side of the backplane facing the multiple groups of display units; the light effect layer comprising: multiple reflective portions, arranged in a one-to-one correspondence with the multiple groups of display units; each of the multiple reflective portions surrounds a corresponding group of display units in the multiple groups of display units and exposes one end of the display unit facing away from the backplane; the multiple reflective portions are arranged at intervals from each other; and a light shielding portion is filled between the multiple reflective portions.

[0006] In one embodiment, the multiple reflecting parts include a first reflecting part, and the multiple groups of display units include a first display unit surrounded by the first reflecting part; the surface of the first reflecting part facing away from the back panel has a first width; the surface of the first display unit facing away from the back panel has a second width, and the first width is greater than the second width; and / or, the surface of the first reflecting part connected to the back panel has a third width, and the third width is greater than the first width.

[0007] In one embodiment, the multiple reflecting parts also include a second reflecting part adjacent to the first reflecting part; the surface of the first reflecting part facing away from the back panel has a first width, and the distance between the first reflecting part and the second reflecting part on the side facing away from the back panel is a fourth width, and the fourth width is greater than the first width.

[0008] In one embodiment, the distance between the surface of the first reflecting portion facing away from the back panel and the back panel is a first height; the distance between the surface of the first display unit facing away from the back panel and the back panel is a second height, and the second height is greater than or equal to the first height; and / or, the distance between the surface of the shading portion facing away from the back panel and the back panel is a third height, and the third height is greater than or equal to the first height.

[0009] In one embodiment, a surface of the first reflective portion facing away from the first display unit is an arc-shaped surface.

[0010] In one embodiment, the reflectivity of the multiple reflective portions is 80% to 98%; and / or the reflectivity of the light-shielding portion is less than 5%.

[0011] In one embodiment, a plurality of pixel areas are formed on the backplane, and a contact area between a portion of the plurality of reflective portions located within a single pixel area among the plurality of pixel areas and the backplane is less than 20% of an area of ​​the single pixel area; and / or a contact area between a portion of the shading portion located within a single pixel area among the plurality of pixel areas and the backplane is greater than 80% of an area of ​​the single pixel area.

[0012] In one embodiment, the plurality of reflective portions are made of white reflective adhesive; and the light shielding portion is made of black adhesive.

[0013] In one embodiment, the display panel further includes a plurality of limiting portions connected to the back plate, and the plurality of limiting portions are arranged one-to-one correspondingly around the plurality of reflecting portions close to one end of the back plate.

[0014] In one embodiment, a distance between each of the plurality of limiting portions and a group of display units surrounded by the corresponding reflecting portion is 5 to 15 micrometers.

[0015] Another embodiment of the present application provides a method for preparing a display panel, including: providing an array substrate, the array substrate including a backplane, on which multiple groups of display units are arranged; forming a light effect layer on the side of the backplane facing the multiple groups of display units; the light effect layer including: multiple reflective parts, which are arranged in a one-to-one correspondence with the multiple groups of display units; each of the multiple reflective parts surrounds a corresponding group of display units in the multiple groups of display units and exposes one end of the display unit facing away from the backplane; and a light shielding part filled between the multiple reflective parts.

[0016] In one embodiment, the light effect layer is formed on the side of the back panel facing the multiple groups of display units, including: forming a plurality of reflective structures that wrap the multiple groups of display units in a one-to-one correspondence on the side of the back panel facing the display units; the multiple reflective structures are arranged at intervals from each other; filling a light-shielding material between the multiple reflective structures; the light-shielding material and the multiple reflective structures are combined to form a light effect material layer; and removing a portion of the light effect material layer covering an end of the multiple groups of display units facing away from the back panel, exposing an end of the multiple groups of display units facing away from the back panel, to form the light effect layer.

[0017] In one embodiment, a plurality of reflective structures are formed on a side of the back plate facing the display units, correspondingly wrapping the plurality of display units. This includes forming the plurality of reflective structures using an inkjet printing process or a dispensing process.

[0018] In one embodiment, before forming the light effect layer on the side of the back panel facing the multiple groups of display units, the method further includes: forming a plurality of limiting portions on the back panel corresponding one-to-one to the multiple groups of display units, each of the plurality of limiting portions being arranged around a corresponding group of display units.

[0019] Another embodiment of the present application provides a display device, comprising any one of the display panels described above. Beneficial effects

[0020] The above-described embodiments of the present application have at least one or more of the following beneficial effects: by providing a reflective portion in the light-effect layer, the reflective portion surrounds the display unit and exposes the end of the display unit facing away from the backplane, thereby reflecting light emitted from the side of the display unit and emitting it from the top of the display unit. Furthermore, by providing a light-shielding portion between the multiple reflective portions, the area of ​​the backplane that is not required for light-emitting display can be partially covered, thereby reducing the reflectivity of the display panel. Therefore, the display panel provided by the embodiments of the present application has the effect of reducing reflectivity while improving light output efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific implementation methods of this application will be described in detail with reference to the accompanying drawings.

[0022] FIG1 is a schematic cross-sectional view of a display panel according to an embodiment of the present application.

[0023] FIG. 2 is a schematic diagram showing the dimensional relationship of the display panel shown in FIG. 1 .

[0024] FIG3 is a schematic structural diagram of a specific embodiment of the display panel shown in FIG1 .

[0025] FIG4 is a schematic structural diagram of a specific embodiment of the display panel shown in FIG1 .

[0026] FIG5 is a schematic diagram showing the area relationship of a pixel region in an embodiment.

[0027] FIG6 is a schematic cross-sectional view of a display panel according to another embodiment of the present application.

[0028] FIG7 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present application.

[0029] FIG8 is a schematic diagram of a partial process of a method for manufacturing a display panel provided in one embodiment of the present application.

[0030] FIG9 is a schematic structural diagram of a display device provided in one embodiment of the present application.

[0031] [Description of Reference Numerals]

[0032] 100: Display panel; 10: Array substrate; 11: Backplane; 111: Pixel area; 12: Display unit; 121: First display unit; 122: Second display unit; 20: Light-effect layer; 21: Reflection portion; 211: First reflection portion; 212: Second reflection portion; 22: Shading portion; 30: Limiting portion; 40: Encapsulation adhesive layer; 50: Cover plate; 60: Light-effect material layer; 61: Reflection structure; 62: Shading material; 200: Display device. Best Mode for Carrying Out the Invention

[0033] Type here the best mode description paragraph of the invention. Modes for Carrying Out the Invention

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below with reference to the accompanying drawings.

[0035] In order to enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts should fall within the scope of protection of this application.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0037] It should also be noted that the division of multiple embodiments in this application is only for the convenience of description and should not constitute a special limitation. The features in various embodiments can be combined and referenced to each other without contradiction.

[0038] In the related art, there are three solutions to reduce the reflectivity of Micro LED displays: (1) using black glue for packaging. This solution will cause the black glue to absorb the light emitted from the side of the chip, including the light originally reflected from the side of the chip and then emitted from the top of the chip, thereby reducing the brightness of the display. In addition, the light absorbed by the glue will increase the heat of the display panel, which is not conducive to the heat dissipation of the display panel; (2) using lens glue and circular polarizer packaging. This solution causes the circular polarizer to absorb not only the reflected ambient light, but also more than 55% of the light emitted by the chip, resulting in a decrease in brightness or an increase in power consumption in order to increase the brightness; (3) making a patterned BM (black matrix) layer on the cover plate and making a light hole at the position of the Micro LED chip. This solution requires a precise bonding process and has a high preparation cost.

[0039] [First embodiment]

[0040] In order to make up for at least some of the defects in the above-mentioned related schemes, the first embodiment of the present application provides a display panel 100. Referring to Figure 1, the display panel 100 includes an array substrate 10 and a light effect layer 20. The array substrate 10 includes a back panel 11 and a plurality of display units 12 arranged on the back panel 11. The light effect layer 20 covers the side of the back panel 11 facing the plurality of display units 12. The light effect layer 20 includes a plurality of reflecting parts 21 and a shading part 22. The plurality of reflecting parts 21 are arranged in a one-to-one correspondence with the plurality of display units 12. Each reflecting part 21 of the plurality of reflecting parts 21 surrounds a corresponding group of display units 12 in the plurality of display units 12 and exposes one end of the display unit 12 facing away from the back panel 11. The plurality of reflecting parts 21 are arranged at intervals from each other. The shading part 22 is filled between the plurality of reflecting parts 21.

[0041] A group of display units 12 may include one or more light-emitting devices, such as Micro LED chips. The backplane 11 may be provided with, for example, a driver circuit for driving the light-emitting devices in the display units 12 and bonding electrodes for soldering and bonding the light-emitting devices in the display units 12. The display units 12 may be electrically connected to their corresponding driver circuits via the bonding electrodes on the backplane 11. As shown in FIG1 , a group of display units 12 includes one light-emitting device. However, in other embodiments, when multiple light-emitting devices are arranged close together, the multiple light-emitting devices may be considered a group of display units 12. For example, the backplane 11 may be provided with multiple pixels, each including multiple color sub-pixels. Each of the multiple color sub-pixels may include light-emitting devices of different colors. For example, if R (red), G (green), and B (blue) light-emitting devices are provided, the light-emitting devices in the blue sub-pixels may be considered a group of display units 12, the light-emitting devices in the green sub-pixels may be considered a group of display units 12, and the light-emitting devices in the red sub-pixels may be considered a group of display units 12. Alternatively, for example, a main light-emitting device and a redundant light-emitting device are provided in each sub-pixel, and the main light-emitting device and the redundant light-emitting device can be regarded as a group of display units 12. Alternatively, a plurality of light-emitting devices are provided on the back panel 11, and each light-emitting device can be regarded as a group of display units 12.

[0042] The multiple reflective portions 21 are arranged in a one-to-one correspondence with the multiple groups of display units 12, that is, each reflective portion 21 surrounds a corresponding group of display units 12. Each group of display units 12 includes one or more light-emitting devices, that is, one reflective portion 21 can contain one or more light-emitting devices. In other words, multiple light-emitting devices are provided on the back panel 11, and the light-emitting devices located in the same reflective portion 21 are considered as a group of display units 12.

[0043] Each group of display units 12 is surrounded by a corresponding reflective portion 21. The end of each display unit 12 facing away from the back panel 11, i.e., the top of each display unit 12, is exposed outside the reflective portion 21. The multiple reflective portions 21 may be made of a white reflective plastic material with a reflectivity of 80% to 98%. Each reflective portion 21 reflects light emitted from the side of the corresponding display unit 12 (the surface surrounded by the reflective portion 21) and ultimately emits it from the top of the display unit 12. This fully utilizes the light from the side of the display unit 12 and improves lighting efficiency.

[0044] The light shielding portion 22 is filled between the multiple reflective portions 21. It should be noted that in some specific embodiments, the light shielding portion 22 also covers the portion between the reflective portion 21 located near the edge of the back panel 11 and the corresponding edge of the back panel 11, so that the area on the surface of the back panel 11 where no reflective portion 21 is provided (the area not covered by the multiple reflective portions 21) is covered by the light shielding portion 22. In other words, the light shielding portion 22 surrounds the multiple reflective portions 21 and exposes the surface of the multiple reflective portions 21 facing away from the back panel 11. The light shielding portion 22 can be a black plastic material, and the reflectivity of the light shielding portion 22 is less than 5%, which can prevent the ambient light outside the display panel 10 from being incident on the back panel 11 and being reflected, thereby reducing the reflectivity of the display panel 100 and improving the display effect.

[0045] In this embodiment, by providing a light effect layer 20, the multiple reflective portions 21 in the light effect layer 20 reflect the light from the sides of the multiple groups of display units 12 to improve the light efficiency, and the light shielding portions 22 in the light effect layer 20 absorb the light to reduce the reflectivity. This not only reduces the reflectivity without affecting the normal brightness, but also makes full use of the side light of the light-emitting device to improve the light efficiency.

[0046] The multiple groups of display units 12 in the display panel 100 can be the same or different from each other, and the multiple reflective portions 21 can also be the same or different from each other. Therefore, for the sake of convenience, the structure of one of the reflective portions 21 and the corresponding group of display units 12 will be described in this embodiment to illustrate the specific structure of the display panel 100 provided in this embodiment.

[0047] 2 , the plurality of reflective portions 21 include a first reflective portion 211, and the plurality of display units 12 include a first display unit 121 surrounded by the first reflective portion 211. The remaining plurality of reflective portions 21 and the plurality of display units 12 may be designed with reference to the structures of the first reflective portion 211 and the first display unit 121.

[0048] In some embodiments, as shown in FIG2 , the surface of the first reflective portion 211 facing away from the back panel 11 has a first width W1, and the surface of the first display unit 121 facing away from the back panel 11 has a second width W2. The first width W1 is greater than the second width W2. The surface of the first reflective portion 211 facing away from the back panel 11 can be referred to as the top surface of the first reflective portion 211. If the top surface of the first reflective portion 211 is circular, for example, the first width W1 can be understood as the diameter of the top surface of the first reflective portion 211. When the top surface of the first reflective portion 211 is rectangular or another shape, the first width W1 can be understood as the diameter of the inscribed circle of the top surface of the first reflective portion 211. The surface of the first display unit 121 facing away from the back panel 11 can be referred to as the top surface of the first display unit 121. If the first display unit 121 is a light-emitting device, since Micro LED chips are typically rectangular, the second width W2 can be understood as the maximum width of the rectangular top surface of the light-emitting device. Alternatively, if the first display unit 121 includes a plurality of light-emitting devices, the second width W2 can be understood as the diameter of the circumscribed circle of the tops of the plurality of light-emitting devices. In other words, on any projection plane perpendicular to the back panel 11, the width of the side of the first reflective portion 211 facing away from the back panel 11 in the orthographic projection is greater than the width of the side of the first display unit 121 facing away from the back panel 11 in the orthographic projection. This allows the top surface of the first display unit 121 to be completely exposed outside the first reflective portion 211, allowing the first display unit 121 to fully emit light through its top surface, ensuring the light-emitting area and achieving a better light-emitting effect for the display panel 100. The second width W2 is, for example, greater than 3 microns.

[0049] Continuing with FIG2 , the surface of the first reflective portion 211 connected to the backplate 11 has a third width W3. In one embodiment, the third width W3 is greater than the first width W1. The surface of the first reflective portion 211 connected to the backplate 11 can be referred to as the bottom surface of the first reflective portion 211. If the bottom surface of the first reflective portion 211 is circular, for example, the third width W3 is the diameter of the bottom surface of the first reflective portion 211. This means that, in a cross-section (or projection plane) perpendicular to the backplate 11, the width of the cross-section (or orthographic projection) of the first reflective portion 211 on the side closest to the backplate 11 is greater than the width on the side facing away from the backplate 11. Referring to the orientation in FIG2 , the first reflective portion 211 is narrower at the top and wider at the bottom. The wider bottom surface of the first reflective portion 211 collects more side light, while the narrower top surface of the first reflective portion 211 reduces the area reflecting ambient light from the display panel 100, effectively reducing reflectivity. As shown in Figures 1 and 2, the surface of the first reflective portion 211 facing away from the first display unit 121 is an arcuate surface, and the first reflective portion 211 has an arched structure in the cross-section shown in Figure 1. Of course, in some embodiments, the surface of the first reflective portion 211 can also be a plane, and the cross-section of the first reflective portion 211 (perpendicular to the cross-section of the back plate 11) has a "normal trapezoidal" structure that is narrow at the top and wide at the bottom (not shown in the figure).

[0050] Of course, in other embodiments, the third width W3 may be smaller than the first width W1. In this case, when the surface of the first reflective portion 211 facing away from the first display unit 121 is curved, the cross-section of the first reflective portion 211 has a "bowl-shaped" structure. When the surface of the first reflective portion 211 is flat, the cross-section of the first reflective portion 211 has an "inverted trapezoidal" structure that is wider at the top and narrower at the bottom. Alternatively, in some embodiments, the third width W3 may be equal to the first width W1, but this embodiment is not limiting.

[0051] In some embodiments, with continued reference to FIG. 2 , the plurality of reflective portions 21 further include a second reflective portion 212 adjacent to the first reflective portion 211. It can be understood that the reflective portion 21 adjacent to the first reflective portion 211 is referred to as the second reflective portion 212. It can also be understood that two adjacent reflective portions 21 in the plurality of reflective portions 21 are referred to as the first reflective portion 211 and the second reflective portion 212, respectively, with the second reflective portion 212 surrounding the second display unit 122. The distance between the first reflective portion 211 and the second reflective portion 212 on the side facing away from the back panel 11 is a fourth width W4. In one embodiment, the fourth width W4 is greater than the first width W1. The fourth width W4 can be understood as the minimum distance between the top surface of the first reflective portion 211 and the top surface of the second reflective portion 212. The fourth width W4 being greater than the first width W1 can be understood as, on any cross-section (or projection plane) perpendicular to the back panel 11, the distance between the top of the cross-section (or orthographic projection) of the first reflecting portion 211 and the top of the cross-section (or orthographic projection) of the second reflecting portion 212 is greater than the width of the top of the cross-section (or orthographic projection) of the first reflecting portion 211.

[0052] Continuing with reference to Figure 2, the distance between the surface of the first reflective portion 211 facing away from the back panel 11 and the back panel 11 is a first height H1. The distance between the surface of the first display unit 121 facing away from the back panel 11 and the back panel 11 is a second height H2. The distance between the surface of the light shielding portion 22 facing away from the back panel 11 and the back panel 11 is a third height H3. In some embodiments, the second height H2 is greater than or equal to the first height H1, ensuring the light emitting effect of the top surface of the first display unit 121. In some embodiments, the third height H3 is greater than or equal to the first height H1, ensuring that the light shielding portion 22 fully surrounds and covers the first reflective portion 211, reducing the problem of light reflection on the outer surface of the first reflective portion 211. The second height H2 is, for example, less than 15 microns.

[0053] In one embodiment, multiple pixel regions 111 are formed on the backplane 11. Referring to FIG4 , one pixel region 111 is defined between dashed lines L1 and L2, and another pixel region 111 is defined between dashed lines L2 and L3. A pixel region 111 can be understood as the region corresponding to a single pixel in the aforementioned embodiment. Within each pixel region 111, it is necessary to reduce reflection from locations on the backplane 11 other than where the display unit 12 is located. The portion of the multiple reflective portions 21 located within a single pixel region within the multiple pixel regions has a contact area with the backplane 11 that is less than 20% of the area of ​​the pixel region. FIG5 shows a schematic top view of a single pixel region, for example, including a single reflective portion 21. The circular dashed line represents the outline of the contact surface (bottom surface) between the reflective portion 21 and the backplane 11. The circular solid line represents the outline of the top surface of the reflective portion 21. The rectangular solid line represents the outline of the top surface of the display unit 12. The two dashed rectangular lines represent the outlines of the solder pins of the display unit 12, which are also the outlines of the contact surface between the display unit 12 and the backplane 11. The area of ​​the pixel region 111 is denoted as S0, the area of ​​the reflective portion 21 in the pixel region 111 in contact with the backplane 11 is denoted as S1 (also referred to as the coverage area of ​​the reflective portion 21 within a single pixel region), the area of ​​the light shielding portion 22 within the pixel region 111 in contact with the backplane 11 is denoted as S2, the area of ​​contact between the display unit 12 and the backplane 11 is denoted as S3 (the area within the two dashed rectangular lines in the pixel region 111 in Figure 5, not filled with diagonal lines), and the area enclosed by the circular dashed lines is denoted as S4 (not marked in the figure). The area of ​​the right-hand dashed area in Figure 5 represents the contact area S1 between the reflective portion 21 and the backplane 11 within the pixel region 111, where S1 = S4 - S3. That is, the coverage area of ​​the reflective portion 21 within a single pixel region does not include the contact area between the display unit 12 and the backplane 11. In some embodiments, S1 is less than 20% of S0. In the pixel region 111, except for the area where the reflective portion 21 is provided, the remaining area is covered by the light shielding portion 22. In some embodiments, the contact area between the portion of the light shielding portion 22 located within a single pixel region and the backplane 11 is greater than 80% of the area of ​​the single pixel region, that is, S2 is greater than 80% of S0. As shown in FIG5 , the portion of the pixel region 111 excluding the area S4 of the circular dotted line area is the contact area S2 between the portion of the light shielding portion 22 located within the pixel region 111 and the backplane 11 (which can also be understood as the coverage area of ​​the light shielding portion 22 in a single pixel region 111). The area filled with the left-slashed line in FIG5 is S2, that is, S2 = S0 - S4. S2 is greater than 80% of S0 to better reduce the reflection of external ambient light by the display panel 100.

[0054] In some embodiments, as shown in FIG3 , the display panel 100 further includes a plurality of limiting portions 30 , wherein the plurality of limiting portions 30 are connected to the back plate 11 , and the plurality of limiting portions 30 are arranged one by one around the plurality of reflecting portions 21 near one end of the back plate 11 . That is, a limiting portion 30 surrounding the reflecting portion 21 is provided at the bottom of each reflecting portion 21 . The height from the surface of the limiting portion 30 facing away from the back plate 11 to the back plate 11 is less than the second height H2 . The limiting portion 30 can be, for example, a continuous or discontinuous annular structure, and can be made of a transparent resin or other transparent adhesive material that can be prepared by processes such as photolithography and printing. The limiting portion 30 can limit the forming material of the reflecting portion 21 during the formation process of the reflecting portion 21 , thereby ensuring the thickness of the display unit 12 corresponding to the surrounding of the reflecting portion 21 .

[0055] In some specific embodiments, the distance e1 (see FIG. 3 ) between any limiting portion 30 and the display unit 12 surrounded by the corresponding reflective portion 21 is 5 to 15 microns. Each limiting portion 30 surrounds a reflective portion 21, and each reflective portion 21 surrounds a group of display units 12. In other words, each limiting portion 30 surrounds a group of display units 12 and is spaced apart from the display unit 12 by a distance of 5 to 15 microns. This allows for better utilization of side light, improves light energy utilization, and reduces power consumption.

[0056] In some embodiments, referring to FIG6 , the display panel 100 further includes an encapsulant layer 40 and a cover plate 50. The encapsulant layer 40 covers the side of the multiple display units 12 and the light effect layer 20 that faces away from the back panel 11. The cover plate 50 covers the side of the encapsulant layer 40 that faces away from the light effect layer 20. The encapsulant layer 40 can be made of a commonly used transparent encapsulant, and the cover plate 50 can be, for example, a glass plate, to protect the display panel 100.

[0057] [Second embodiment]

[0058] A second embodiment of the present application provides a method for manufacturing a display panel, which can be used to manufacture the display panel 100 provided in the first embodiment. The method for manufacturing a display panel includes step S1 and step S3.

[0059] Step S1: providing an array substrate 10, wherein the array substrate 10 includes a back plate 11, and a plurality of display units 12 are provided on the back plate 11;

[0060] Step S3: forming a light effect layer 20 on the side of the back panel 11 facing the multiple groups of display units 12; the light effect layer 20 includes: a plurality of reflective portions 21, which are arranged in a one-to-one correspondence with the multiple groups of display units 12; each of the plurality of reflective portions 21 surrounds a corresponding group of display units 12 in the multiple groups of display units 12 and exposes one end of the display unit 12 facing away from the back panel 11; and a light shielding portion 22, which is filled between the plurality of reflective portions 21.

[0061] The display panel manufacturing method provided in this embodiment can be used to manufacture the display panel 100 provided in the first embodiment, and thus has the same beneficial effects as those of the first embodiment.

[0062] More specifically, step S1 refers to step (a) in FIG. 7 , and specifically, for example, light-emitting devices in a plurality of display units 12 are bonded on the back plate 11 by welding or the like to obtain the array substrate 10 .

[0063] In some specific embodiments, referring to FIG. 7 , step S3 specifically includes:

[0064] Step S31 (step (b) in FIG. 7 or step (b′) in FIG. 8 ): forming a plurality of reflective structures 61 on the side of the back plate 11 facing the display units, the reflective structures 61 correspondingly enclosing the plurality of display units 12 ; the reflective structures 61 are spaced apart from each other.

[0065] Step S33 (step (c) in FIG7 ): filling a light shielding material 62 between the plurality of reflective structures 61 ; the light shielding material 62 and the plurality of reflective structures 61 are combined to form a light effect material layer 60 ;

[0066] Step S35 : (Step (d) in FIG7 ) removing the portion of the light effect material layer 60 covering the end of the plurality of display units 12 facing away from the back plate 11 , exposing the end of the plurality of display units 12 facing away from the back plate 11 , and forming the light effect layer 20 .

[0067] Specifically, in step S31, multiple reflective structures 61 can be formed by an IJP (Ink-jet Printing) process or a dispensing process. Reflective adhesive is printed on the back panel 11 corresponding to multiple groups of display units 12, forming multiple reflective structures 61 as shown in step (b) of Figure 7.

[0068] In step S33, a light-shielding material 62 is applied to the array substrate 10, which is formed with the multiple reflective structures 61, so that the light-shielding material 62 covers the multiple reflective structures 61 and the portion of the backplane 11 exposed outside the multiple reflective structures 61. The light-shielding material 62 and the multiple reflective structures 61 combine to form the light-effect material layer 60 in step (c) of Figure 7 . In step S35, for example, using an etching process, the portion of the light-effect material layer 60 covering the tops of the multiple groups of display units 12 is removed, exposing the ends of the multiple groups of display units 12 facing away from the backplane, forming the light-effect layer 20 shown in step (d) of Figure 7 .

[0069] In this embodiment, the multiple reflective structures 61 can be formed through an IJP process or a dispensing process, and the entire light effect layer 20 can be formed through a small number of etchings. This process is simple, can utilize existing process equipment, does not require high-precision alignment, and has lower production costs. Of course, in other embodiments, after forming the multiple reflective structures 61 in step S31, the multiple reflective structures 61 can be processed to form the multiple reflective portions 21 and then the light shielding portions 22 are formed. This embodiment is not limited to this process.

[0070] In some embodiments, step S3 may be preceded by, for example, step S2: forming a plurality of limiting portions 30 on the back panel 11 corresponding to the plurality of display units 12. Each limiting portion 30 is disposed around a corresponding group of display units 12. After step S2, the structure shown in step (e) of FIG8 is obtained. The limiting portions 30 can be formed, for example, using a transparent adhesive material through an inkjet printing process. In step S33, a reflective structure 61 is formed within each of the limiting portions 30 using an inkjet printing or dispensing process, resulting in the structure shown in step (b') of FIG8. The thickness of the reflective structure 61 wrapped around the sides of the display units 12 can be limited to ensure effective light collection from the sides of the display units 12. In some specific embodiments, the distance between each limiting portion 30 and the corresponding display unit 12 is 5 to 15 microns, which can achieve better light efficiency.

[0071] [Third embodiment]

[0072] 9 , the third embodiment of the present application further provides a display device 200, comprising the display panel 100 of any of the first embodiments or the display panel 100 manufactured by the display panel manufacturing method of the second embodiment. The display device 200 has the same beneficial effects as the first and second embodiments. The display device 200 may be, for example, an electronic device with a display function, such as a mobile phone, computer, tablet, or smartwatch. The display device 200 may also include, for example, necessary structures such as a control circuit board for controlling the operation of the display panel 100. The configuration of these necessary structures can be similar to that of conventional display devices and will not be described in detail in this embodiment.

[0073] The above description is merely a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment, it is not intended to limit the present application. Any technician familiar with this profession can make slight changes or modifications to equivalent embodiments of the technical contents disclosed above without departing from the scope of the technical solution of the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application. Industrial Applicability

[0074] Type your industrial applicability description paragraph here. Sequence Listing Free Content

[0075] Type your sequence listing free description paragraph here.

Claims

1. A display panel, comprising: An array substrate, the array substrate comprising a backplane and a plurality of display units arranged on the backplane; A light effect layer, covering a side of the back plate facing the plurality of display units; The light effect layer includes: a plurality of reflective parts, which are arranged one by one corresponding to the plurality of display units; each of the plurality of reflective parts surrounds a corresponding group of display units in the plurality of display units and exposes one end of the display unit facing away from the back panel; the plurality of reflective parts are arranged at intervals from each other; and a shading part is filled between the plurality of reflective parts.

2. The display panel according to claim 1, wherein: The plurality of reflective parts include a first reflective part, the plurality of display units include a first display unit surrounded by the first reflective part; a surface of the first reflective part facing away from the back plate has a first width; The surface of the first display unit facing away from the back plate has a second width, and the first width is greater than the second width; and / or, The surface of the first reflective portion connected to the back plate has a third width, and the third width is greater than the first width.

3. The display panel according to claim 2, wherein: The multiple reflective parts also include a second reflective part adjacent to the first reflective part; the surface of the first reflective part facing away from the back plate has a first width, and the spacing between the first reflective part and the second reflective part on the side facing away from the back plate is a fourth width, and the fourth width is greater than the first width.

4. The display panel according to claim 2, wherein: The distance between the surface of the first reflective portion facing away from the back plate and the back plate is a first height; The distance between the surface of the first display unit facing away from the back plate and the back plate is a second height, and the second height is greater than or equal to the first height; and / or, A distance from a surface of the light shielding portion facing away from the back plate to the back plate is a third height, and the third height is greater than or equal to the first height.

5. The display panel according to claim 2, wherein: A surface of the first reflective portion facing away from the first display unit is an arc-shaped surface.

6. The display panel according to claim 1, wherein: The reflectivity of the multiple reflecting parts is 80% to 98%; and / or the reflectivity of the shading part is less than 5%.

7. The display panel according to claim 1, wherein: A plurality of pixel regions are formed on the backplane. The contact area between a portion of the plurality of reflective portions located in a single pixel region of the plurality of pixel regions and the backplane is less than 20% of the area of ​​the single pixel region; and / or A contact area between a portion of the light shielding portion located in a single pixel region among the plurality of pixel regions and the backplane is greater than 80% of an area of ​​the single pixel region.

8. The display panel according to claim 1, wherein: The plurality of reflective parts are made of white reflective adhesive material; the light shielding part is made of black adhesive material.

9. The display panel according to claim 1, wherein: It also includes a plurality of limiting parts, which are connected to the back plate, and are arranged one by one around the plurality of reflecting parts close to one end of the back plate.

10. The display panel according to claim 9, wherein: The distance between each of the plurality of limiting portions and a group of display units surrounded by the corresponding reflecting portion is 5-15 micrometers.

11. A method for preparing a display panel, comprising: Providing an array substrate, the array substrate comprising a back plate, and a plurality of display units are arranged on the back plate; forming a light effect layer on a side of the back plate facing the plurality of display units; The light effect layer includes: a plurality of reflective parts, which are arranged one by one corresponding to the plurality of display units; each of the plurality of reflective parts surrounds a corresponding group of display units in the plurality of display units and exposes one end of the display unit facing away from the back panel; and a shading part, which is filled between the plurality of reflective parts.

12. The method for preparing a display panel according to claim 11, wherein: The step of forming a light effect layer on a side of the back plate facing the plurality of display units comprises: A plurality of reflective structures are formed on one side of the back plate facing the display unit, and the reflective structures are wrapped around the plurality of display units in a one-to-one correspondence; the plurality of reflective structures are arranged at intervals from each other; Filling a light-shielding material between the plurality of reflective structures; the light-shielding material and the plurality of reflective structures are combined to form a light-effect material layer; The portion of the light effect material layer covering the end of the plurality of display units facing away from the back plate is removed to expose the end of the plurality of display units facing away from the back plate, thereby forming the light effect layer.

13. The method for preparing a display panel according to claim 12, wherein: A plurality of reflective structures are formed on a side of the back plate facing the display unit, corresponding to and wrapping the plurality of groups of display units. The plurality of reflective structures are formed by inkjet printing or glue dispensing.

14. The method for preparing a display panel according to claim 11, wherein: Before forming the light effect layer on the side of the back plate facing the multiple groups of display units, the method further includes: forming a plurality of limiting portions corresponding to the multiple groups of display units on the back plate, each of the plurality of limiting portions being arranged around a corresponding group of display units.

15. A display device comprising the display panel according to any one of claims 1 to 10.

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