Light-emitting substrate and display device

Abstract

The present application relates to the field of display, and specifically discloses a light-emitting substrate and a display device, including at least two light boards, on which a plurality of light-emitting units are arranged in an array, and the light-emitting substrate also includes a splicing assembly, which is arranged between two adjacent light boards; the splicing assembly includes a splicing part, a first optical part, and a second optical part, the first optical part and the second optical part are respectively connected to the two sides of the splicing part close to the light board, and the first optical part and the second optical part are both located on one side of the light-emitting surface of the light board; a receiving cavity is formed on one side of the splicing part corresponding to the two adjacent light boards, the side of the light board is embedded in the receiving cavity, and the top surface of the splicing part covers the seam area of ​​the two adjacent light boards; the first optical part and the second optical part are used to refract the light of the light-emitting unit to the seam area. The present application improves the shadow problem existing in the seam area of ​​the light-emitting substrate by the above method.

Description

Technical Field

[0001] The present application relates to the field of display, and in particular to a light-emitting substrate and a display device. Background Art

[0002] When large-size display panels use Mini LED as the light-emitting device, due to the difficulty of the manufacturing process and yield issues, it is impossible to make thousands or tens of thousands of light-emitting units on a single light board. Therefore, it is often necessary to splice multiple light boards into a large size.

[0003] However, in the light-emitting substrate, there will be a seam area between adjacent light boards. Due to circuit design reasons, multiple light-emitting units on the light board will have a certain distance from the seam area. Therefore, the light from the multiple light-emitting units on the light board cannot be irradiated into the seam area, resulting in dark shadows in the seam area of ​​the light-emitting substrate, affecting the display effect.

[0004] Therefore, how to improve the shadow phenomenon in the seam area of ​​the light-emitting substrate has become an urgent problem to be solved in the art. Summary of the invention

[0005] The embodiments of the present application disclose a light-emitting substrate and a display device, the purpose of which is to improve the shadow phenomenon in the seam area of ​​the light-emitting substrate and enhance the display effect.

[0006] An embodiment of the present application discloses a light-emitting substrate, comprising at least two light boards, on which a plurality of light-emitting units are arranged in an array, and the light-emitting substrate also comprises a splicing assembly, wherein the splicing assembly is arranged between two adjacent light boards; the splicing assembly comprises a splicing portion, a first optical portion and a second optical portion, wherein the first optical portion and the second optical portion are respectively connected to two sides of the splicing portion close to the light board, and the first optical portion and the second optical portion are both located on one side of the light-emitting surface of the light board; a receiving cavity is formed on one side of the splicing portion corresponding to the two adjacent light boards, the side edges of the light board are embedded in the receiving cavity, and the top surface of the splicing portion covers the seam area of ​​the two adjacent light boards; the first optical portion and the second optical portion are used to refract the light of the light-emitting unit to the seam area.

[0007] Optionally, the first optical portion and the second optical portion are both inclined toward the light board at a preset angle; and the preset angle is less than or equal to 60°.

[0008] Optionally, the splicing assembly is made of a transparent material, or only the first optical part and the second optical part are made of a transparent material.

[0009] Optionally, the two adjacent light boards include a first light board and a second light board, and the splicing part includes a first supporting part, a second supporting part and a third supporting part, the first supporting part and the third supporting part are arranged opposite to each other, the first supporting part is located on one side of the light emitting surface of the light board, the second supporting part is located between the first supporting part and the third supporting part, and is connected to the first supporting part and the third supporting part, and the second supporting part divides the first supporting part and the third supporting part to form the accommodating cavity; the first optical part is arranged on a side of the first supporting part close to the first light board, and the second optical part is arranged on a side of the first supporting part close to the second light board.

[0010] Optionally, the two adjacent light boards include a first light board and a second light board, the splicing part includes a first splicing part and a second splicing part, the first optical part is connected to a side of the first splicing part close to the first light board, the second optical part is connected to a side of the second splicing part close to the second light board, and a side of the first splicing part away from the first light board is spliced ​​with a side of the second splicing part away from the second light board; the accommodating cavity is provided at a position of the first splicing part corresponding to the first light board and a position of the second splicing part corresponding to the second light board.

[0011] Optionally, a first connecting portion is provided on a side of the first splicing portion away from the first light panel, a second connecting portion is provided at a position of the second splicing portion corresponding to the first connecting portion, and the first connecting portion is connected to the second connecting portion to splice the first splicing portion and the second splicing portion.

[0012] Optionally, a plurality of first light-emitting units are arranged on an edge of the first light board near the first optical part; a plurality of second light-emitting units are arranged on an edge of the second light board near the second optical part, the orthographic projection of the first optical part on the first light board partially blocks the orthographic projection of the first light-emitting unit on the first light board, and the orthographic projection of the second optical part on the second light board partially blocks the orthographic projection of the second light-emitting unit on the second light board.

[0013] Optionally, a sinking portion is provided between the splicing portion and the first optical portion, and between the splicing portion and the second optical portion, and the sinking portion sinks the splicing portion relative to the first optical portion and the second optical portion by a preset distance;

[0014] The sinking portion includes a first surface and a second surface, one side of the second surface is connected to the first surface, and the other side extends toward the direction of the splicing portion and is connected to the top surface of the splicing portion, the first surface is parallel to the top surface of the splicing portion, and the second surface is inclined at a preset angle relative to the splicing portion.

[0015] Optionally, a plurality of optical structures are provided on the top surface of the splicing portion, and the optical structures are used to reflect or refract light.

[0016] The embodiment of the present application further discloses a display device, including a back panel, the display device also includes the above-mentioned light-emitting substrate, and the back panel wraps the light-emitting substrate.

[0017] The present application makes improvements to the light-emitting substrate by arranging a splicing assembly between two adjacent light boards and using the splicing part of the splicing assembly to splice the two adjacent light boards. When the two adjacent light boards need to be spliced, the two adjacent light boards only need to be respectively inserted into the accommodating cavity of the splicing part to achieve mutual splicing between the two adjacent light boards. Since the top surface of the splicing part covers the splicing area between the two adjacent light boards, when the light emitted by the light-emitting unit on the side of the light board close to the splicing assembly shines on the first optical part and the second optical part, the first optical part and the second optical part refract and reflect the light, so that the light is refracted in the direction of the splicing part after passing through the first optical part and the second optical part. In this way, the first optical part and the second optical part can be used to change the light path, so that the light that cannot reach the splicing area changes its path, so that the light covers the position of the splicing area, thereby improving the shadow phenomenon in the splicing area of ​​the light-emitting substrate and enhancing the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0019] Figure 1 A top view of a first embodiment of a light-emitting substrate of the present application;

[0020] Figure 2 This is a schematic diagram of the splicing of the splicing assembly and two adjacent light boards in the first embodiment of the light-emitting substrate of the present application;

[0021] Figure 3 This is a schematic diagram of the splicing of a splicing assembly and two adjacent light panels in the second embodiment of the light-emitting substrate of the present application;

[0022] Figure 4 This is a schematic diagram of the splicing of a splicing assembly and two adjacent light panels in the third embodiment of the light-emitting substrate of the present application;

[0023] Figure 5 This is a schematic diagram of the splicing of a splicing assembly and two adjacent light panels in the fourth embodiment of the light-emitting substrate of the present application;

[0024] Figure 6 A schematic diagram of the splicing of a splicing assembly and two adjacent light panels in the fifth embodiment of the light-emitting substrate of the present application;

[0025] Figure 7 It is a schematic diagram of an embodiment of a display device of the present application.

[0026] Among them, 10, display device; 100, light-emitting substrate; 200, back panel; 110, lamp board; 111, light-emitting unit; 112, first lamp board; 113, second lamp board; 114, first light-emitting unit; 115, second light-emitting unit; 120, splicing assembly; 121, splicing part; 122, accommodating cavity; 123, first supporting part; 124, second supporting part; 125, third supporting part; 126, first splicing part; 127, first connecting part; 128, second splicing part; 129, second connecting part; 130, first optical part; 131, second optical part; 140, splicing area; 150, sinking part; 151, first surface; 152, second surface; 160, optical structure; 170, light-emitting assembly; 171, first substrate; 172, driving circuit layer; 173, light-emitting device. DETAILED DESCRIPTION

[0027] The present application is described in detail below with reference to the accompanying drawings and optional embodiments. It should be noted that, under the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] Figure 1 is a schematic diagram of a first embodiment of the light-emitting substrate of the present application, Figure 2 Schematic diagram of the splicing assembly and two adjacent light panels in the first embodiment of the light-emitting substrate of the present application; Figure 1 and Figure 2 As shown, the embodiment of the present application discloses a light-emitting substrate 100, including at least two light boards 110, on which a plurality of light-emitting units 111 are arranged in an array, and the light-emitting substrate 100 also includes a splicing assembly 120, which is arranged between two adjacent light boards 110; the splicing assembly 120 includes a splicing portion 121, a first optical portion 130 and a second optical portion 131, and the first optical portion 130 and the second optical portion 131 are respectively connected to the splicing portion 121 near the light. The first optical portion 130 and the second optical portion 131 are both located on both sides of the light board 110, and both sides of the light board 110, and both sides of the first optical portion 130 and the second optical portion 131 are located on one side of the light emitting surface of the lamp board 110; a receiving cavity 122 is formed on one side of the splicing portion 121 corresponding to the two adjacent light boards 110, and the side edges of the light board 110 are embedded in the receiving cavity 122, and the top surface of the splicing portion 121 covers the splicing area 140 of the two adjacent light boards 110; the first optical portion 130 and the second optical portion 131 are used to refract the light of the light-emitting unit 111 to the splicing area 140.

[0029] It should be noted that Figure 2 In FIG. 1 , a represents the optical path of the light emitted by the light emitting unit, which illuminates the first optical part or the second optical part and is refracted.

[0030] The present application makes an improvement on the light-emitting substrate 100, by setting a splicing assembly 120 between two adjacent light panels 110, and using the splicing portion 121 of the splicing assembly 120 to splice the two adjacent light panels 110. When it is necessary to splice the two adjacent light panels 110, it is only necessary to insert the two adjacent light panels 110 into the accommodating cavity 122 of the splicing portion 121 respectively, so as to realize the mutual splicing between the two adjacent light panels 110; and because the top surface of the splicing portion 121 covers the splicing area 140 between the two adjacent light panels 110, when the light panel 110 is close to the side of the splicing assembly 120, When the light emitted by the light-emitting unit 111 irradiates the first optical part 130 and the second optical part 131, the first optical part 130 and the second optical part 131 refract and reflect the light, so that the light is refracted toward the direction of the splicing part 121 after passing through the first optical part 130 and the second optical part 131. In this way, the first optical part 130 and the second optical part 131 can be used to change the light path, so that the light that cannot reach the seam area 140 can change its path, so that the light covers the position of the seam area 140, thereby improving the shadow phenomenon in the seam area 140 of the light-emitting substrate 100 and improving the display effect.

[0031] It should be noted that the light-emitting substrate 100 of the present application is mainly aimed at the Mini LED light board 110, but is not limited to the Mini LED light board. Other types of light boards such as Micro LED light boards with multiple light-emitting units 111 are also applicable. This application only takes the Mini LED light board as an example.

[0032] When Mini-LED is used as a light-emitting device 173 source and matched with a liquid crystal display panel to achieve ultra-thin, high-brightness, and multi-partitioning, the demand for partitions increases as the number of partitions increases. Therefore, the active matrix drive (AM) method is proposed. When the active matrix drive design structure is adopted, because the external circuit is directly bound to the display panel by the driver chip, the light-emitting unit on the source side is farther away from the edge of the light board than other positions, and it is easy for the spacing of the light-emitting units in the splicing area to be greater than the spacing of the light-emitting units in the plane. When splicing, due to the spacing generated by the light-emitting units, the light emitted by the light-emitting units cannot irradiate the splicing area, so there will be a shadow phenomenon at the position of the splicing area.

[0033] Based on the above problems, the present application sets a splicing assembly 120 in the seam area 140 of two adjacent light panels 110. While splicing the two adjacent light panels 110 using the splicing assembly 120, the splicing assembly 120 is covered in the seam area 140. The first optical part 130 and the second optical part 131 are used to change the path of the light that cannot reach the seam area 140, so that the light finally reaches the seam area 140, thereby solving the shadow problem in the seam area 140.

[0034] Specifically, two adjacent lamp boards 110 include a first lamp board 112 and a second lamp board 113, and the splicing portion 121 includes a first support portion 123, a second support portion 124 and a third support portion 125. The first support portion 123 and the third support portion 125 are arranged opposite to each other, and the first support portion 123 is located on one side of the light emitting surface of the lamp board 110, and the second support portion 124 is located between the first support portion 123 and the third support portion 125, and is connected to the first support portion 123 and the third support portion 125, and the second support portion 124 divides the first support portion 123 and the third support portion 125 to form a accommodating cavity 122; the first optical portion 130 is arranged on a side of the first support portion 123 close to the first lamp board 112, and the second optical portion 131 is arranged on a side of the first support portion 123 close to the second lamp board 113.

[0035] In this embodiment, the splicing portion 121 is an integrally formed structure, and the splicing portion 121 can be an "I-shaped" structure composed of a first support portion 123, a second support portion 124 and a third support portion 125, and the accommodating cavity 122 is formed on both sides of the splicing portion 121 of the I-shaped structure.

[0036] When two adjacent light boards 110 need to be spliced ​​together, the two adjacent light boards 110 only need to be inserted into the accommodating cavities 122 on both sides of the splicing portion 121, and the first supporting portion 123 and the third supporting portion 125 are respectively abutted against the two adjacent light boards 110, so that the light boards 110 are embedded in the accommodating cavities 122 to be fixed, thus completing the splicing and assembly of the two adjacent light boards 110. The installation is simple and convenient.

[0037] When the light emitted by the light-emitting unit 111 on the light board 110 close to the splicing component 120 hits the first optical part 130 and the second optical part 131, the first optical part 130 and the second optical part 131 refract and reflect the light, so that the light is refracted toward the splicing part 121 after passing through the first optical part 130 and the second optical part 131. In this way, the first optical part 130 and the second optical part 131 can be used to change the light path, so that the light that cannot reach the seam area 140 can change its path, so that the light covers the position of the seam area 140, thereby improving the shadow phenomenon in the seam area 140 of the light-emitting substrate 100 and enhancing the display effect.

[0038] In order to ensure that the light emitted by the light emitting unit 111 can irradiate the first optical part 130 and the second optical part 131, and the first optical part 130 and the second optical part 131 can transmit the light and refract it toward the seam area 140, the present application designs the first optical part 130 and the second optical part 131 as follows:

[0039] The first optical portion 130 and the second optical portion 131 are both inclined toward the light board 110 at a preset angle α; and the preset angle α is less than or equal to 60°.

[0040] The first optical portion 130 and the second optical portion 131 are respectively inclined toward the adjacent light board 110 , so that the first optical portion 130 and the second optical portion 131 can more easily receive the oblique light emitted from the light emitting unit 111 .

[0041] In addition, in Mini LED, the light emission angle of the outermost edge of the light emitting unit 111 is generally 30°. According to the triangle interior angle theorem, the sum of the interior angles is 180°. At the same time, the incident light received by the first optical portion 130 and the second optical portion 131 cannot be perpendicular to their inclined edges, which will result in the failure of light to be refracted.

[0042] If the angle formed by the first optical part 130 and the second optical part 131 being tilted relative to the light board 110 is greater than 60°, the refraction angle will become larger, that is, the intersection point of the refracted light will be toward the display panel, which will easily cause the halo and the dark group to become larger; therefore, the present application sets the angle formed by the first optical part 130 and the second optical part 131 being tilted relative to the light board 110 to be less than or equal to 60°, so that the oblique light emitted by the light-emitting unit 111 can more easily illuminate the first optical part 130 and the second optical part 131, and at the same time, the light irradiated to the first optical part 130 and the second optical part 131 can be refracted, and the direction of the light refraction is toward the seam area 140, which is beneficial to improve the shadow problem in the seam area 140.

[0043] Furthermore, in the present application, the splicing assembly 120 is made of a transparent material, or only the first optical part 130 and the second optical part 131 are made of a transparent material. For example, the splicing assembly 120 or the first optical part 130 and the second optical part 131 can be made of glass or a transparent resin material, so that when the light emitted by the light-emitting unit 111 is irradiated to the first optical part 130 and the second optical part 131, it can be normally transmitted through the first optical part 130 and the second optical part 131 and refracted, so that the first optical part 130 and the second optical part 131 are used to change the path of the light, and the light is adjusted to irradiate the splicing area 140, so as to solve the shadow problem of the splicing area 140; and when the entire splicing assembly 120 is made of a transparent material, it can be made of only one transparent material, so that the process is simple, the production is convenient, and it is conducive to cost saving.

[0044] It should be noted that the width of the overlapping portion of the splicing assembly 120 and the seam area 140 between two adjacent light panels 110 can be designed according to the adaptability of the size of the seam area 140 , and this width can be set to 0.5 mm, which can facilitate assembly.

[0045] In addition, the height of the first optical portion 130 and the second optical portion 131 protruding from the light board 110 needs to satisfy the central point of the top surface of the splicing portion 121, which is lower than the extension line of the maximum light emitting angle of the light emitting units 111 of the two adjacent light boards 110; Figure 1 As shown, when the focus of the extended line of the light is higher than the center position of the top surface of the splicing portion 121 , space can be reserved for the intersection point after the light is refracted, which is beneficial for the light to cover the splicing area 140 .

[0046] Furthermore, in order to ensure that the first optical portion 130 and the second optical portion 131 can better receive the light emitted by the light emitting unit 111, so that the first optical portion 130 and the second optical portion 131 can better process the light emitted by the light emitting unit 111, the present application also designs the first optical portion 130 and the second optical portion 131, as follows:

[0047] A plurality of first light emitting units 114 are arranged on the edge of the first light board 112 near the first optical portion 130; a plurality of second light emitting units 115 are arranged on the edge of the second light board 113 near the second optical portion 131. The orthographic projection of the first optical portion 130 on the first light board 112 partially blocks the orthographic projection of the first light emitting unit 114 on the first light board 112, and the orthographic projection of the second optical portion 131 on the second light board 113 partially blocks the orthographic projection of the second light emitting unit 115 on the second light board 113.

[0048] Since the light emitted by the light-emitting unit 111 on the light board 110 that is closest to the first optical part 130 and the second optical part 131 is easier to be received by the first optical part 130 and the second optical part 131, the first optical part 130 and the second optical part 131 are respectively inclined toward the first light board 112 and the second light board 113, and respectively partially block the first light-emitting unit 114 located at the edge of the first light board 112 and the second light-emitting unit 115 located at the edge of the second light board 113, so that the light emitted by the first light-emitting unit 114 and the second light-emitting unit 115 can be more easily irradiated to the first optical part 130 and the second optical part 131, so that the first optical part 130 and the second optical part 131 can change the path of the light and adjust the light to irradiate the seam area 140, thereby solving the shadow problem of the seam area 140, and will not affect the normal lighting effect of the light-emitting unit 111 due to completely blocking the first light-emitting unit 114 or the second light-emitting unit 115.

[0049] Figure 3 FIG. 1 is a schematic diagram of the splicing assembly and two adjacent light panels in the second embodiment of the light-emitting substrate of the present application. Figure 3 As shown, Figure 3 The illustrated embodiment is based on Figure 2 Improvements,

[0050] The material of the splicing component 120 is glass. A light-emitting component 170 is arranged at the bottom of the splicing component 120. The light-emitting component 170 includes a first substrate 171. A driving circuit layer 172 is arranged above the first substrate 171. A light-emitting device 173 is arranged on the driving circuit layer 172. The driving circuit layer 172 is electrically connected to the light-emitting device 173 and is used to drive the light-emitting device 173 to emit light.

[0051] This embodiment and Figure 2 What is different from the illustrated embodiment is that, in this embodiment, the splicing component 120 is made of glass material as a whole, which can have good light transmittance, and a light-emitting component 170 is also arranged at the bottom of the splicing component 120, wherein the driving circuit layer 172 of the light-emitting component 170 can be formed on the first substrate 171 by etching deposition and other processes, and the driving circuit layer 172 can control the light-emitting device 173 to emit light.

[0052] When the luminous flux in the seam area 140 is low, the light-emitting device 173 can be controlled to emit light through the driving circuit layer 172. The light emitted by the light-emitting device 173 can pass through the splicing components made of translucent glass material, thereby supplementing the luminous flux in the seam area 140, thereby actively improving the low brightness problem in the seam area 140, thereby improving the shadow problem in the seam area 140.

[0053] Figure 4FIG. 1 is a schematic diagram of the splicing assembly and two adjacent light panels in the third embodiment of the light-emitting substrate of the present application; Figure 4 As shown, two adjacent lamp boards 110 include a first lamp board 112 and a second lamp board 113, the splicing portion 121 includes a first splicing portion 126 and a second splicing portion 128, the first optical portion 130 is connected to a side of the first splicing portion 126 close to the first lamp board 112, the second optical portion 131 is connected to a side of the second splicing portion 128 close to the second lamp board 113, and a side of the first splicing portion 126 away from the first lamp board 112 is spliced ​​with a side of the second splicing portion 128 away from the second lamp board 113; the position of the first splicing portion 126 corresponding to the first lamp board 112 and the position of the second splicing portion 128 corresponding to the second lamp board 113 are both provided with an accommodating cavity 122.

[0054] This embodiment is different from the previous embodiment in that, in this embodiment, the splicing portion 121 is composed of two independent parts, namely a first splicing portion 126 and a second splicing portion 128, the first optical portion 130 is connected to the first splicing portion 126, and the second optical portion 131 is connected to the second splicing portion 128, so that the first optical portion 130 and the first splicing portion 126 form one splicing piece, and the second optical portion 131 and the second splicing portion 128 form another splicing piece.

[0055] When two adjacent light boards 110 need to be spliced ​​together, one of the light boards 110 only needs to be embedded into the accommodating cavity 122 of the first splicing part 126, and the other light board 110 needs to be embedded into the accommodating cavity 122 of the second splicing part 128, and then the first splicing part 126 and the second splicing part 128 are spliced ​​together to achieve the splicing between the two adjacent light boards 110.

[0056] When the light emitted by the light-emitting unit 111 on the light board 110 close to the splicing component 120 hits the first optical part 130 and the second optical part 131, the first optical part 130 and the second optical part 131 refract and reflect the light, so that the light is refracted toward the splicing part 121 after passing through the first optical part 130 and the second optical part 131. In this way, the first optical part 130 and the second optical part 131 can be used to change the light path, so that the light that cannot reach the seam area 140 can change its path, so that the light covers the position of the seam area 140, thereby improving the shadow phenomenon in the seam area 140 of the light-emitting substrate 100 and enhancing the display effect.

[0057] Furthermore, a first connecting portion 127 is provided on a side of the first splicing portion 126 away from the first light panel 112 , and a second connecting portion 129 is provided at a position of the second splicing portion 128 corresponding to the first connecting portion 127 . The first connecting portion 127 is connected to the second connecting portion 129 to splice the first splicing portion 126 and the second splicing portion 128 .

[0058] In the present embodiment, since the splicing part 121 is composed of two independent structures, after two adjacent lamp boards 110 are respectively inserted into the accommodating cavity 122 of the first splicing part 126 and the accommodating cavity 122 of the second splicing part 128, the first connecting part 127 on the first splicing part 126 and the second connecting part 129 on the second splicing part 128 can be used to connect them, so that the first splicing part 126 and the second splicing part 128 are spliced ​​together through the first connecting part 127 and the second connecting part 129, thereby realizing the splicing between the two adjacent lamp boards 110.

[0059] The first splicing portion 126 and the second splicing portion 128 may be fixed by, but not limited to, magnetic attraction or connected by snap-fit.

[0060] For example, when the first splicing part 126 and the second splicing part 128 are fixed by magnetic attraction, magnetic strip installation grooves can be set inside the first splicing part 126 and the second splicing part 128, and the magnetic strips can be placed asymmetrically in different areas. During splicing, the magnetic strips cannot be completely spliced ​​if they are not aligned. After the magnetic strips are aligned, magnetic attraction fixation is achieved.

[0061] When the first splicing part 126 and the second splicing part 128 are fixed by snap-fitting, protrusions and slots can be correspondingly arranged on the overlapping surfaces between the first splicing part 126 and the second splicing part 128. When the first splicing part 126 and the second splicing part 128 are spliced, the protrusion is embedded in the slot for fixation, thereby realizing the connection between the first splicing part 126 and the second splicing part 128.

[0062] In addition, in order to maintain the fixed state of the splicing assembly 120, screw holes can be set at the bottom of the splicing part 121 at positions corresponding to the bottom surfaces of the two adjacent light boards 110, or an adhesive coating can be used to connect the bottom of the splicing part 121 to the bottom of the light board 110, thereby improving the stability of the connection between the splicing assembly 120 and the two adjacent light boards 110.

[0063] Figure 5 FIG. 1 is a schematic diagram of the splicing assembly and two adjacent light panels in the fourth embodiment of the light-emitting substrate of the present application; Figure 5 As shown, a sinking portion 150 is disposed between the splicing portion 121 and the first optical portion 130 , and between the splicing portion 121 and the second optical portion 131 , and the sinking portion 150 sinks the splicing portion 121 relative to the first optical portion 130 and the second optical portion 131 by a preset distance;

[0064] The sinking portion 150 includes a first surface 151 and a second surface 152. One side of the second surface 152 is connected to the first surface 151, and the other side extends toward the direction of the splicing portion 121 and is connected to the top surface of the splicing portion 121. The first surface 151 is parallel to the top surface of the splicing portion 121, and the second surface 152 is inclined at a preset angle relative to the splicing portion 121.

[0065] This embodiment is different from the previous embodiment in that, in this embodiment, a sinking portion 150 is further provided between the splicing portion 121 and the optical portion, wherein a first surface 151 of the sinking portion 150 is parallel to the top surface of the splicing portion 121, and a second surface 152 extends downward in the direction of the splicing portion 121, and is inclined at a preset angle relative to the splicing portion 121, so that the sinking portion 150 as a whole forms a shape similar to a "step", and the splicing portion 121 is sunk a preset distance relative to the first optical portion 130 and the second optical portion 131, and the top surface of the splicing portion 121 is located in the sinking area formed between the two sinking portions 150.

[0066] The sinking area is used to form a retention space to maintain uniform mixing of light without being affected by other media; moreover, when the splicing component 120 encounters the heavy pressure of the diffusion plate at the position of the sinking part 150, it is not easy to deform or break, which is beneficial to enhance the structural strength of the splicing component 120.

[0067] Figure 6 FIG. 1 is a schematic diagram of the splicing assembly and two adjacent light panels in the fifth embodiment of the light-emitting substrate of the present application; Figure 6 As shown, Figure 6 The illustrated embodiment is based on Figure 5 In the improvement, a plurality of optical structures 160 are disposed on the top surface of the splicing portion 121, and the optical structures 160 are used to reflect or refract light.

[0068] It should be noted that Figure 5 In the figure, a represents the light path of the light emitted by the light emitting unit, which illuminates the first optical part or the second optical part and is refracted; b represents the light path of a part of the light emitted by the light emitting unit that is refracted toward the display panel and reflected on the optical structure; C represents the light path of the light reflected by the optical structure.

[0069] This embodiment is different from the previous embodiment in that, in this embodiment, a plurality of optical structures 160 are arranged on the top surface of the splicing portion 121, wherein the optical structure 160 may be a structure formed by atomization treatment such as coating, dot spraying, covering film layer, etc. on the top surface of the splicing portion 121, or may be a lens structure arranged on the top surface of the splicing portion 121.

[0070] It can be understood that when the light is emitted by the light unit 111 on the light board 110 close to the side of the splicing assembly 120, part of the oblique light will illuminate the first optical part 130 and the second optical part 131, while part of the direct light will illuminate the optical film, diffuser plate and other materials in the display module.

[0071] Based on the above light propagation path, this embodiment arranges an optical structure 160 on the top surface of the splicing portion 121 to process the light in at least two aspects:

[0072] On the one hand, when a part of the light is irradiated to the first optical part 130 and the second optical part 131, the light is refracted and reflected for the first time by the first optical part 130 and the second optical part 131, and the first optical part 130 and the second optical part 131 change the path of the light for the first time, so that the light is irradiated to the optical structure 160 on the top surface of the splicing part 121 after passing through the first optical part 130 and the second optical part 131, and the optical structure 160 changes the path of the light transmitted by the first optical part 130 and the second optical part 131 for the second time, so that the light can further cover the top surface of the entire splicing part 121, thereby covering the seam area 140.

[0073] On the other hand, when the light unit 111 irradiates the optical film, diffuser plate and other materials in the display module, and the light reflected by the materials irradiates the optical structure 160, the optical structure 160 changes its secondary irradiation path, wherein the effective angle will mix part of the light in the seam area 140, so that the light covers the entire seam area 140.

[0074] That is, this embodiment utilizes the multiple cooperation of the first refraction part, the second refraction part and the optical structure 160 to improve the shadow phenomenon in the seam area 140 of the light-emitting substrate 100 and enhance the display effect.

[0075] It should be noted that when the optical structure 160 is a diamond lens structure, the hypotenuse of the optical structure 160 can be inclined at a preset angle relative to the top surface of the splicing part 121. For example, the preset angle can be 25°. Considering that the light inside the display panel is partially reflected after passing through the diffuser plate, it is reflected by the optical structure 160. When the incident angle hits the optical structure 160, the inclined surface of the optical structure 160 will reflect the light. According to the reflection principle of light, the larger the oblique angle at this time, that is, the smaller the incident angle, the closer the reflected light will be to the bottom. However, if the incident angle is too small, refraction cannot be achieved. Therefore, the hypotenuse of the optical structure 160 is controlled at 25°, which can make it easier for the light to cover the top surface of the entire splicing part 121, thereby achieving light covering the entire seam area 140, thereby solving the shadow problem of the seam area 140.

[0076] Figure 7is a schematic diagram of an embodiment of a display device of the present application, such as Figure 7 As shown, the embodiment of the present application further discloses a display device 10, including a back plate 200, and the display device 10 also includes the above-mentioned light-emitting substrate 100, and the back plate 200 wraps the light-emitting substrate 100. The back plate 200 is used to protect the light-emitting substrate 100 from being easily damaged by external forces, which is conducive to extending the service life of the light-emitting substrate 100.

[0077] It should be noted that the display device 10 of the present application may not be limited to a display device 10 having a Mini LED light board 110, but may also be a display device 10 having a Micro LED light board 110. Moreover, the display device 10 of the present application may be a large-size device such as a television set of 75 inches or more, a conference machine, and the present application does not impose specific restrictions on the type of the display device 10.

[0078] Since a large-size display device 10 using a Mini LED light board 110 is often formed by splicing multiple light boards 110, light from multiple light-emitting units 111 on the light board 110 cannot irradiate the seam area 140, resulting in dark shadows in the seam area 140 of the light-emitting substrate 100, affecting the display effect.

[0079] Based on the above problems, the present application improves the light-emitting substrate 100 in the display device 10, by setting a splicing component 120 between two adjacent light boards 110, and using the splicing part 121 of the splicing component 120 to splice the two adjacent light boards 110. When it is necessary to splice the two adjacent light boards 110, it is only necessary to insert the two adjacent light boards 110 into the accommodating cavity 122 of the splicing part 121 respectively, so as to realize the mutual splicing between the two adjacent light boards 110; and because the top surface of the splicing part 121 covers the splicing area 140 between the two adjacent light boards 110, when the side of the light board 110 close to the splicing component 120 When the light emitted by the light-emitting unit 111 irradiates the first optical part 130 and the second optical part 131, the first optical part 130 and the second optical part 131 refract and reflect the light, so that the light is refracted in the direction of the splicing part 121 after passing through the first optical part 130 and the second optical part 131. In this way, the first optical part 130 and the second optical part 131 can be used to change the light path, so that the light that cannot reach the seam area 140 can change its path, so that the light covers the position of the seam area 140, thereby improving the shadow phenomenon in the seam area 140 of the light-emitting substrate 100, improving the display effect, and further improving the quality of the display device 10.

[0080] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0081] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A light-emitting substrate, comprising at least two light boards, on which a plurality of light-emitting units are arranged in an array, characterized in that: The light-emitting substrate further comprises a splicing component, and the splicing component is arranged between two adjacent light panels; The splicing assembly includes a splicing portion, a first optical portion and a second optical portion, wherein the first optical portion and the second optical portion are respectively connected to two sides of the splicing portion close to the light board, and the first optical portion and the second optical portion are both located on one side of the light emitting surface of the light board; The splicing portion is formed with a receiving cavity on one side corresponding to the two adjacent light boards, the side edge of the light board is embedded in the receiving cavity, and the top surface of the splicing portion covers the splicing area of ​​the two adjacent light boards; The first optical part and the second optical part are used to refract the light of the light emitting unit to the seam area; The two adjacent lamp boards include a first lamp board and a second lamp board, the splicing portion includes a first supporting portion, a second supporting portion and a third supporting portion, the first supporting portion and the third supporting portion are arranged opposite to each other, the first supporting portion is located at one side of the light emitting surface of the lamp board, the second supporting portion is located between the first supporting portion and the third supporting portion and connected to the first supporting portion and the third supporting portion, and the second supporting portion divides the first supporting portion and the third supporting portion to form the accommodating cavity; The first optical part is arranged on a side of the first supporting part close to the first light board, and the second optical part is arranged on a side of the first supporting part close to the second light board; The first light board is provided with a plurality of first light emitting units at an edge close to the first optical portion; the second light board is provided with a plurality of second light emitting units at an edge close to the second optical portion. The orthographic projection of the first optical part on the first lamp board partially blocks the orthographic projection of the first light-emitting unit on the first lamp board, and the orthographic projection of the second optical part on the second lamp board partially blocks the orthographic projection of the second light-emitting unit on the second lamp board; A sinking portion is provided between the splicing portion and the first optical portion, and between the splicing portion and the second optical portion, and the sinking portion sinks the splicing portion relative to the first optical portion and the second optical portion by a preset distance; The sinking portion includes a first surface and a second surface, one side of the second surface is connected to the first surface, and the other side extends toward the direction of the splicing portion and is connected to the top surface of the splicing portion, the first surface is parallel to the top surface of the splicing portion, and the second surface is inclined at a preset angle relative to the splicing portion.

2. The light-emitting substrate according to claim 1, wherein: The first optical portion and the second optical portion are both inclined toward the light board at a preset angle; and the preset angle is less than or equal to 60°.

3. The light-emitting substrate according to claim 2, characterized in that: The splicing assembly is made of a transparent material, or only the first optical part and the second optical part are made of a transparent material.

4. The light-emitting substrate according to claim 3, characterized in that: The two adjacent light boards include a first light board and a second light board, the splicing portion includes a first splicing portion and a second splicing portion, the first optical portion is connected to a side of the first splicing portion close to the first light board, the second optical portion is connected to a side of the second splicing portion close to the second light board, and a side of the first splicing portion away from the first light board is spliced ​​to a side of the second splicing portion away from the second light board; The accommodating cavity is disposed at a position of the first splicing portion corresponding to the first light board, and at a position of the second splicing portion corresponding to the second light board.

5. The light-emitting substrate according to claim 4, characterized in that: A first connection portion is provided on a side of the first splicing portion away from the first light panel, a second connection portion is provided on the second splicing portion at a position corresponding to the first connection portion, and the first connection portion is connected to the second connection portion to splice the first splicing portion and the second splicing portion.

6. The light-emitting substrate according to claim 5, characterized in that: A plurality of optical structures are arranged on the top surface of the splicing portion, and the optical structures are used for reflecting or refracting light.

7. A display device comprising a back panel, characterized in that: The display device further comprises a light-emitting substrate as claimed in any one of claims 1 to 6, and the back panel wraps the light-emitting substrate.

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