Tiled display apparatus

Abstract

The application discloses a spliced display device, which comprises a plurality of display panels, wherein each display panel comprises a substrate and a light-emitting unit arranged on one side of the substrate, and the plurality of display panels comprise first and second panels arranged adjacently; the first panel comprises a first side face, the second panel comprises a second side face arranged opposite to the first side face, the first panel comprises a first light-emitting unit arranged adjacent to the first side face, and the second panel comprises a second light-emitting unit arranged adjacent to the second side face; a first light-shielding part is arranged between the first and second light-emitting units, and the orthographic projection of the first light-shielding part on the first side face covers the orthographic projection of the first and second light-emitting units on the first side face in a direction parallel to the plane where the substrate is arranged. The application improves the light leakage phenomenon of the spliced display device, weakens the splicing seam between the first and second panels, and improves the use experience of the spliced display device.

Description

Technical Field

[0001] This invention belongs to the field of display technology, and particularly relates to a splicing display device. Background Technology

[0002] Light-emitting diodes (LEDs) are widely used in lighting and display technologies due to their advantages such as small size, low power consumption, long lifespan, and high brightness. Micro-LED displays, with their individual pixel arrays, offer better contrast, faster response times, and lower energy consumption compared to currently widely used display devices.

[0003] However, due to the structural limitations of existing splicing display devices, there is a light leakage problem at the seams of splicing display devices.

[0004] Therefore, there is an urgent need for a new splicing display device. Summary of the Invention

[0005] This invention provides a splicing display device in which the orthographic projection of the first light-shielding part on the first side surface covers the orthographic projection of the first light-emitting unit and the second light-emitting unit on the first side surface along a direction parallel to the plane of the substrate, thereby improving the light leakage phenomenon of the splicing display device, weakening the seam between the first panel and the second panel, and improving the user experience of the splicing display device.

[0006] This invention provides a splicing display device, comprising: a plurality of display panels, each display panel including a substrate and light-emitting units disposed on one side of the substrate; the plurality of display panels including a first panel and a second panel disposed adjacent to each other; wherein, the first panel includes a first side surface, the second panel includes a second side surface disposed opposite to the first side surface, the first panel includes a first light-emitting unit disposed adjacent to the first side surface, and the second panel includes a second light-emitting unit disposed adjacent to the second side surface; a first light-shielding portion is disposed between the first light-emitting unit and the second light-emitting unit, and along a direction parallel to the plane of the substrate, the orthographic projection of the first light-shielding portion on the first side surface covers the orthographic projections of the first light-emitting unit and the second light-emitting unit on the first side surface.

[0007] Compared with related technologies, the splicing display device provided in this embodiment of the invention includes multiple adjacent spliced ​​display panels. A first light-shielding part is provided between the first light-emitting unit and the second light-emitting unit to block the light emitted by the first light-emitting unit and the second light-emitting unit. At the same time, the orthographic projection of the first light-shielding part on the first side surface is restricted to a direction parallel to the plane of the substrate, which covers the orthographic projection of the first light-emitting unit and the second light-emitting unit on the first side surface. That is, along the thickness direction of the display panel, the length of the first light-shielding part needs to be greater than or equal to the length of the first light-emitting unit and the second light-emitting unit. This avoids light refraction between the first and second panels due to the light emitted by the first and second light-emitting units, which would cause excessive light emission and over-brightness between the first and second sides. This improves the light leakage phenomenon of the splicing display device, weakens the seam between the first and second panels, and enhances the user experience of the splicing display device. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the structure of a splicing display device according to an embodiment of the present invention; Figure 2 This is provided by one embodiment of the present invention. Figure 1 A partial schematic diagram at point B in the middle; Figure 3 This is provided by one embodiment of the present invention. Figure 2 A cross-sectional view at point A-A'; Figure 4 This is provided by one embodiment of the present invention. Figure 2 A cross-sectional view at point A-A'; Figure 5 This is provided by one embodiment of the present invention. Figure 2 A cross-sectional view at point A-A'; Figure 6 This is provided by one embodiment of the present invention. Figure 1 A partial schematic diagram at point B in the middle; Figure 7 This is provided by one embodiment of the present invention. Figure 6 A cross-sectional view at point C-C'; Figure 8 This is provided by one embodiment of the present invention. Figure 7 A partial schematic diagram at point D in the middle. Detailed Implementation

[0010] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.

[0011] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0012] In the existing technology, multiple display panels 10 are spliced ​​together to form a larger splicing display device 1. However, through research and experimentation, the inventors have found that light refraction occurs at the seams of the existing splicing display device 1, resulting in abnormally excessive light emission at the seam edges of the splicing display device 1. Alternatively, light reflection may occur due to excess optical adhesive and metal wiring, leading to abnormally excessive light emission at the seam edges of the splicing display device 1, which in turn causes light leakage and affects the user experience of the splicing display device 1.

[0013] To address the aforementioned issues, the splicing display device 1 provided in this embodiment of the invention provides a first light-shielding part 300 between the first light-emitting unit 210 and the second light-emitting unit 220 to block the light emitted by the first light-emitting unit 210 and the second light-emitting unit 220. Simultaneously, by restricting the direction parallel to the plane of the substrate 100, the orthographic projection of the first light-shielding part 300 on the first side surface C1 covers the orthographic projections of the first light-emitting unit 210 and the second light-emitting unit 220 on the first side surface C1, thereby improving the light leakage phenomenon of the splicing display device 1, weakening the seam between the first panel 11 and the second panel 12, and enhancing the user experience of the splicing display device 1.

[0014] To better understand this invention, the following is combined with... Figures 1 to 8 The splicing display device 1 according to an embodiment of the present invention will be described in detail.

[0015] Please refer to the following: Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a splicing display device 1 provided according to an embodiment of the present invention; Figure 2 This is provided by one embodiment of the present invention. Figure 1 A partial schematic diagram at point B in the middle; Figure 3 This is provided by one embodiment of the present invention. Figure 2 A cross-sectional view at point A-A'.

[0016] This invention provides a splicing display device 1, comprising: a plurality of display panels 10, each display panel 10 including a substrate 100 and light-emitting units 200 disposed on one side of the substrate 100; the plurality of display panels 10 including a first panel 11 and a second panel 12 disposed adjacent to each other; wherein, the first panel 11 includes a first side surface C1, the second panel 12 includes a second side surface C2 disposed opposite to the first side surface C1, the first panel 11 includes a first light-emitting unit 210 disposed adjacent to the first side surface C1, and the second panel 12 includes a second light-emitting unit 220 disposed adjacent to the second side surface C2; ​​a first light-shielding portion 300 is disposed between the first light-emitting unit 210 and the second light-emitting unit 220, and along a direction parallel to the plane of the substrate 100, the orthographic projection of the first light-shielding portion 300 on the first side surface C1 covers the orthographic projections of the first light-emitting unit 210 and the second light-emitting unit 220 on the first side surface C1.

[0017] The splicing display device 1 provided in this embodiment of the invention includes a plurality of adjacent spliced ​​display panels 10. A first light-shielding part 300 is provided between the first light-emitting unit 210 and the second light-emitting unit 220 to block the light emitted by the first light-emitting unit 210 and the second light-emitting unit 220. At the same time, the orthographic projection of the first light-shielding part 300 on the first side surface C1 is restricted to a direction parallel to the plane of the substrate 100, which covers the orthographic projection of the first light-emitting unit 210 and the second light-emitting unit 220 on the first side surface C1. That is, along the thickness direction Z of the display panel, the length of the first light-shielding part 300 needs to be greater than or equal to the length of the first light-emitting unit 210 and the second light-emitting unit 220. This avoids light refraction between the first panel 11 and the second panel 12 due to the light emitted by the first light-emitting unit 210 and the second light-emitting unit 220, which would cause abnormal excessive light emission and over-brightness between the first side surface C1 and the second side surface C2. This improves the light leakage phenomenon of the splicing display device 1, weakens the splicing seam between the first panel 11 and the second panel 12, and improves the user experience of the splicing display device 1.

[0018] In this embodiment, the light-emitting unit 200 can specifically be a Micro LED (Micro Light Emitting Diode) or a Mini LED (Mini LED). Micro LEDs and Mini LEDs have advantages such as small size, high luminous efficiency, and low power consumption. For example, the size of a Micro LED is less than 50 μm, and the size of a Mini LED is less than 100 μm, which can clearly display numbers and patterns on a smaller display panel 10.

[0019] LED chip structures are classified into upright, vertical, and flip-chip structures. This invention applies to LEDs with upright, vertical, and flip-chip structures.

[0020] It should be noted that the first light-shielding part 300 is disposed between the first light-emitting unit 210 and the second light-emitting unit 220. Depending on the actual situation, the first light-shielding part 300 can be located between the first side C1 and the second side C2, that is, within the seam between the first panel 11 and the second panel 12, which is convenient for manufacturing. The first light-shielding part 300 can also be disposed inside the first panel 11, that is, on the side of the first light-emitting unit 210 facing the second side C2, and / or, the first light-shielding part 300 can be disposed inside the second panel 12, that is, on the side of the second light-emitting unit 220 facing the first side C1.

[0021] Optionally, along a direction parallel to the plane of the substrate 100, the orthographic projection of the first light-shielding part 300 on the first side surface C1 covers the orthographic projections of the first light-emitting unit 210 and the second light-emitting unit 220 on the first side surface C1. The first light-shielding part 300 extends a certain distance away from the substrate 100 relative to the first light-emitting unit 210 and the second light-emitting unit 220. That is, along the thickness direction Z of the display panel, the length of the first light-shielding part 300 needs to be greater than the length of the first light-emitting unit 210 and the second light-emitting unit 220 to ensure the blocking effect on the light emitted by the first light-emitting unit 210 and the second light-emitting unit 220.

[0022] Optionally, the material of the first light-shielding part 300 includes, but is not limited to, black matrix (BM) material. The BM material can be selected from one or more of organic black resin material, metal or metal oxide material; wherein, the organic black resin material may contain black pigment and resin matrix, and the metal or metal oxide material may contain chromium, chromium oxide or aluminum, etc.

[0023] Optionally, substrate 100 may include substrate 110 and array layer 120, and array layer 120 may include driving circuitry (not shown in the figure). Exemplarily, the driving circuitry disposed on array layer 120 may include transistors and storage capacitors. The driving circuitry and light-emitting unit 200 are electrically connected. The transistor includes an active layer, a gate, a source, and a drain.

[0024] Please see Figure 3 In some optional embodiments, a first adhesive layer 600 is provided on the side of the light-emitting unit 200 away from the substrate 100; the first light-shielding part 300 includes a first sub-light-shielding part 310; the first sub-light-shielding part 310 is provided on the side of the first adhesive layer 600 of the first panel 11 facing the second panel 12, and / or, the first sub-light-shielding part 310 is provided on the side of the first adhesive layer 600 of the second panel 12 facing the first panel 11.

[0025] In this embodiment, a first adhesive layer 600 can be provided on the side of the light-emitting unit 200 away from the substrate 100 to protect the light-emitting unit 200 from light emission. A first sub-shielding part 310 is provided on the side of the first adhesive layer 600 of the first panel 11 facing the second panel 12. The first sub-shielding part 310 can block the light emitted by the first light-emitting unit 210 towards the seam between the first panel 11 and the second panel 12, so as to avoid multiple reflections of the light emitted by the first light-emitting unit 210 in the seam, thereby preventing light leakage from the seam. Similarly, a first sub-shielding part 310 can be provided on the side of the first adhesive layer 600 of the second panel 12 facing the first panel 11. This first sub-shielding part 310 can be used to block the light emitted by the second light-emitting unit 220 towards the seam between the first panel 11 and the second panel 12.

[0026] Depending on actual needs, a first sub-shading part 310 can be provided separately on the side of the first adhesive layer 600 of the first panel 11 facing the second panel 12 or on the side of the first adhesive layer 600 of the second panel 12 facing the first panel 11. Alternatively, a first sub-shading part 310 can be provided on the side of the first adhesive layer 600 of the first panel 11 facing the second panel 12 and on the side of the first adhesive layer 600 of the second panel 12 facing the first panel 11, respectively, to ensure the shading effect.

[0027] Optionally, along a direction parallel to the plane of the substrate 100, the first adhesive layer 600 can be recessed a certain distance relative to the substrate 100 in the direction of the light-emitting unit 200 of the display panel 10, to leave space for the setting of the first sub-shielding part 310.

[0028] Optionally, along the thickness direction Z of the display panel, the length of the first sub-light-shielding part 310 is equal to the thickness of the first adhesive layer 600. That is, the first sub-light-shielding part 310 and the first adhesive layer 600 can be set in the same layer, which is convenient for precise manufacturing. At the same time, it will not affect other film layer structures, thus ensuring the reliability of the display panel 10.

[0029] The fact that the length of the first sub-light-shielding portion 310 and the thickness of the first adhesive layer 600 are equal along the thickness direction Z of the display panel can mean that the distance between the side surface of the first sub-light-shielding portion 310 facing the substrate 100 and the side surface facing away from the substrate 100 is equal to the distance between the side surface of the first adhesive layer 600 facing the substrate 100 and the side surface facing away from the substrate 100.

[0030] Optionally, the material of the first adhesive layer 600 includes, but is not limited to, OC (Over Coat) adhesive. OC adhesive can be selected from one or more of acrylic resins, epoxy resins, or polyimide resins. OC adhesive can be formed through coating and curing processes, and has the functions of planarization, insulation protection, and optical transparency. Of course, depending on actual needs, the first adhesive layer 600 can also be prepared using other adhesive materials.

[0031] Please see Figure 3 In some optional embodiments, along a direction parallel to the plane of the substrate 100, on the same display panel 10, the distance a between the first sub-shielding portion 310 and the adjacent light-emitting unit 200 is greater than or equal to 5 micrometers and less than or equal to 10 micrometers.

[0032] It is understandable that, along the direction parallel to the plane where the substrate 100 is located, on the same display panel 10, the distance 'a' between the first sub-shielding part 310 and the adjacent light-emitting unit 200 should not be too small, otherwise it will affect the normal light emission of the light-emitting unit 200. Nor should it be too large, otherwise it may not be able to effectively block the light emitted by the light-emitting unit 200 towards the seam between the first panel 11 and the second panel 12. For example, along the direction parallel to the plane where the substrate 100 is located, on the same display panel 10, the distance 'a' between the first sub-shielding part 310 and the adjacent light-emitting unit 200 can be equal to any one of 5 micrometers, 6 micrometers, 7 micrometers, 8 micrometers, 9 micrometers, and 10 micrometers.

[0033] Optionally, when first sub-light-shielding portions 310 are respectively provided on the side of the first adhesive layer 600 of the first panel 11 facing the second panel 12 and on the side of the first adhesive layer 600 of the second panel 12 facing the first panel 11, the distance between the first sub-light-shielding portion 310 near the first panel 11 and the light-emitting unit 200 on the adjacent first panel 11 is greater than or equal to 5 micrometers and less than or equal to 10 micrometers in a direction parallel to the plane of the substrate 100. The distance between the first sub-light-shielding portion 310 near the second panel 12 and the light-emitting unit 200 on the adjacent second panel 12 is greater than or equal to 5 micrometers and less than or equal to 10 micrometers.

[0034] Please see Figure 4 , Figure 4 This is provided by one embodiment of the present invention. Figure 2 A cross-sectional view at point A-A'; in some optional embodiments, a first adhesive layer 600 is provided on the side of the light-emitting unit 200 away from the substrate 100; the first light-shielding part 300 includes a first sub-light-shielding part 310; the first sub-light-shielding part 310 is provided inward of the first adhesive layer 600 near the second panel 12 relative to the first light-emitting unit 210, and / or, the first sub-light-shielding part 310 is provided inward of the first adhesive layer 600 near the first panel 11 relative to the second light-emitting unit 220.

[0035] It is understood that in this embodiment, the first sub-shielding portion 310 can be directly disposed inside the first adhesive layer 600. Specifically, the first sub-shielding portion 310 can be prepared and formed first, and then the first adhesive layer 600 can be formed to cover the light-emitting unit 200 and the first sub-shielding portion 310. At the same time, the first sub-shielding portion 310 can be provided for the first light-emitting unit 210 and the second light-emitting unit 220 respectively, so as to effectively block the light emitted by the first light-emitting unit 210 and the second light-emitting unit 220 towards the seam between the first panel 11 and the second panel 12.

[0036] Please see Figure 3 Optionally, along a direction parallel to the plane of the substrate 100, the length b of the first sub-shielding portion 310 is greater than or equal to 0.8 micrometers and less than or equal to 8 micrometers.

[0037] Understandably, the length b of the first sub-shielding portion 310 along the direction parallel to the plane of the substrate 100 should not be too small, as this would result in poor light-shielding performance and fail to meet requirements. Conversely, it should not be too large, as this would affect the overall size of the display panel 10. Through research and experimentation, the inventors discovered that the length b of the first sub-shielding portion 310 along the direction parallel to the plane of the substrate 100 can be any one of 0.8 micrometers, 1 micrometer, 2 micrometers, 3 micrometers, 4 micrometers, 5 micrometers, 6 micrometers, 7 micrometers, or 8 micrometers.

[0038] Please see Figure 3 In some optional embodiments, along the thickness direction Z of the display panel, the length d of the first sub-shielding portion 310 is greater than or equal to 10 micrometers and less than or equal to 30 micrometers.

[0039] In this embodiment, the length d of the first sub-shielding portion 310 along the thickness direction Z of the display panel directly affects the light blocking effect on the light-emitting unit 200. A larger length d along the thickness direction Z results in a larger blocking area and a better blocking effect, but an excessively large length may affect the setting of other film layers. Conversely, a smaller length d along the thickness direction Z results in a smaller blocking area and affects the blocking effect. The inventors of this invention have comprehensively considered the film layer structure dimensions and blocking effect of the display panel 10, and the length d of the first sub-shielding portion 310 along the thickness direction Z can be any of 10 micrometers, 15 micrometers, 20 micrometers, 25 micrometers, or 30 micrometers.

[0040] Optionally, a light-transmitting adhesive layer 500 is provided between the first side C1 and the second side C2. The material of the light-transmitting adhesive layer 500 includes, but is not limited to, optically clear adhesive (OCA), used to achieve optical bonding and structural fixation between adjacent display panels 10, while ensuring optical transmittance and display uniformity in the splicing area.

[0041] Please see Figures 3 to 4 In some optional embodiments, the display panel 10 further includes a first adhesive layer 600 and a second light-shielding portion 400. The first adhesive layer 600 is disposed on the side of the light-emitting unit 200 away from the substrate 100. The second light-shielding portion 400 is disposed within the first adhesive layer 600, and the orthographic projection of the second light-shielding portion 400 on the substrate 100 at least partially surrounds the orthographic projection of the light-emitting unit 200 on the substrate 100.

[0042] It is understood that in this embodiment, the second light-shielding part 400 can be correspondingly disposed between adjacent light-emitting units 200 to block the light emission of adjacent light-emitting units 200 from interfering with each other and to ensure the light emission effect. The second light-shielding part 400 is disposed within the first adhesive layer 600. Specifically, the first adhesive layer 600 can cover the surface of the second light-shielding part 400 away from the substrate 100 and the side surface of the second light-shielding part 400, which is simple and convenient to prepare. Alternatively, the second light-shielding part 400 can also be completely disposed inside the first adhesive layer 600, which has a better fixing effect.

[0043] Optionally, the second light-shielding part 400 can be made of the same material as the first light-shielding part 300 to reduce production costs. For example, both the second light-shielding part 400 and the first light-shielding part 300 can be made of black matrix (BM) material.

[0044] Please see Figure 5 , Figure 5 This is provided by one embodiment of the present invention. Figure 2 A cross-sectional view at point A-A'; In some optional embodiments, the display panel 10 further includes a first adhesive layer 600 and a second adhesive layer 700, the first adhesive layer 600 being disposed on the side of the light-emitting unit 200 away from the substrate 100, and the second adhesive layer 700 being disposed on the side of the first adhesive layer 600 away from the substrate 100; the display panel 10 further includes a second light-shielding portion 400, the second light-shielding portion 400 being disposed on the second adhesive layer 700, and the orthographic projection of the second light-shielding portion 400 on the substrate 100 at least partially surrounds the orthographic projection of the light-emitting unit 200 on the substrate 100.

[0045] Compared to the above embodiments, in this embodiment, the second light-shielding part 400 is disposed on the second adhesive layer 700, that is, the second light-shielding part 400 is disposed on the side of the light-emitting unit 200 away from the substrate 100, so as to control the light emission angle range of the light-emitting unit 200 by using the second light-shielding part 400, thereby realizing the privacy protection function, protecting privacy or preventing ambient light pollution, and preventing other people from viewing the screen displayed by the splicing display device 1 from the side.

[0046] In this embodiment, the first adhesive layer 600 and the second adhesive layer 700 can be made of the same material to reduce production costs.

[0047] Optionally, the orthographic projection edge of the second light-shielding portion 400 on the substrate 100 coincides with the orthographic projection edge of the corresponding light-emitting unit 200 on the substrate 100, so as to limit the light emission angle of the light-emitting unit 200.

[0048] Please see Figure 3 In some optional embodiments, along the thickness direction Z of the display panel, the length e of the second light-shielding portion 400 is greater than or equal to 2 micrometers and less than or equal to 10 micrometers.

[0049] Understandably, the length e of the second light-shielding portion 400 along the thickness direction Z of the display panel should not be too small, as this would result in poor light-shielding performance and fail to meet requirements. Conversely, it should not be too large, as this would affect the film thickness of the display panel 10. Optionally, the length e of the second light-shielding portion 400 along the thickness direction Z of the display panel can be any one of 2 micrometers, 3 micrometers, 4 micrometers, 5 micrometers, 6 micrometers, 7 micrometers, 8 micrometers, 9 micrometers, or 10 micrometers.

[0050] Please see Figures 6 to 7 , Figure 6 This is provided by one embodiment of the present invention. Figure 1 A partial schematic diagram at point B in the middle; Figure 7This is provided by one embodiment of the present invention. Figure 6 A cross-sectional view at C-C'; In some optional embodiments, the splicing display device 1 further includes a first adhesive layer 600 and a second adhesive layer 700. The first adhesive layer 600 is disposed on the side of the light-emitting unit 200 away from the substrate 100, and the second adhesive layer 700 is disposed on the side of the first adhesive layer 600 away from the substrate 100 and extends to cover the side of the first adhesive layer 600; the side of the second adhesive layer 700 is in contact with the surface of the substrate 100 facing the light-emitting unit 200; the first light-shielding part 300 includes a second sub-light-shielding part 320, and the second sub-light-shielding part 320 is disposed at least between two opposite sides of the second adhesive layer 700 of the first panel 11 and the second panel 12.

[0051] It is understood that in this embodiment, a portion of the second adhesive layer 700 is disposed on the side of the first adhesive layer 600 away from the substrate 100, and a portion of the second adhesive layer 700 extends to cover the side of the first adhesive layer 600, so that the first light-shielding portion 300 can fully fill the gap between the two opposite sides of the second adhesive layer 700 of the first panel 11 and the second panel 12.

[0052] The first light-shielding part 300 can be made of light-shielding materials such as black ink. The light emitted by the light-emitting unit 200 towards the two opposite sides of the second adhesive layer 700 of the first panel 11 and the second panel 12 can be blocked and absorbed by the first light-shielding part 300, thus avoiding the problem of bright seams.

[0053] Optionally, the light emitted from the light-emitting units 200 of the first panel 11 and the second panel 12 can pass sequentially through the first adhesive layer 600 and the second adhesive layer 700 and be emitted through the side of the second adhesive layer 700 to the second sub-light-shielding part 320, where it is absorbed after multiple refractions within the second sub-light-shielding part 320.

[0054] Optionally, the second sub-shielding portion 320 may also be disposed between the opposite sides of the substrate 100 of the first panel 11 and the second panel 12 to improve the visual consistency between the first panel 11 and the second panel 12.

[0055] Please see Figures 7 to 8 , Figure 8 This is provided by one embodiment of the present invention. Figure 7 A partial schematic diagram at point D in the middle.

[0056] In some optional embodiments, a first seam P1 is formed between two opposing sides of the second adhesive layer 700 of the first panel 11 and the second panel 12; the first seam P1 includes an adjoining first region P11 and a second region P12 in the direction from the second adhesive layer 700 to the first adhesive layer 600; the cross-section of the first region P11 is gradually narrowed in the direction from the second adhesive layer 700 to the first adhesive layer 600, and the cross-section of the second region P12 is gradually widened.

[0057] It should be noted that during the manufacturing process, the second sub-light-shielding part 320 can be filled from the first region P11 of the first seam P1. Therefore, in the direction from the second adhesive layer 700 to the first adhesive layer 600, the cross-section of the first region P11 is gradually narrowed, that is, the opening on the side of the first region P11 away from the substrate 100 is larger, so as to facilitate the entry of the material of the second sub-light-shielding part 320. Meanwhile, the cross-section of the second region P12 is gradually widened, which, together with the first region P11, can accommodate more material of the second sub-light-shielding part 320 while also preventing the material of the second sub-light-shielding part 320 from overflowing from the first seam P1, thereby improving the stability of the second sub-light-shielding part 320.

[0058] Optionally, in the direction from the second adhesive layer 700 to the first adhesive layer 600, the cross section of the first region P11 includes an arc-shaped chamfer to improve the smoothness of the opening at the first seam P1 and facilitate the filling of the material of the second sub-shading part 320.

[0059] In some optional embodiments, the included angle α between the side of the second adhesive layer 700 corresponding to the second region P12 and the side surface of the substrate 100 facing the light-emitting unit 200 is greater than or equal to 60° and less than or equal to 80°.

[0060] Since the light emitted by the light-emitting unit 200 is emitted through the side of the second adhesive layer 700, which is usually the side of the second adhesive layer 700 corresponding to the second region P12, the angle between the side of the second adhesive layer 700 and the surface of the substrate 100 facing the light-emitting unit 200 will affect the emission angle of the light emitted by the light-emitting unit 200 at the side of the second adhesive layer 700, and thus affect the refraction effect of the light emitted by the light-emitting unit 200 in the second sub-shielding part 320.

[0061] Through research and experimentation, the inventors discovered that when the side of the second adhesive layer 700 is tilted towards the center of the first seam P1, the emission angle of the light-emitting unit 200 on the side of the second adhesive layer 700 is relatively smaller. The emitted light can be refracted more times within the second sub-shielding part 320 to ensure the absorption effect of the emitted light by the second sub-shielding part 320, thereby improving the problem of the first seam P1 shining.

[0062] Optionally, the included angle α between the side of the second adhesive layer 700 corresponding to the second region P12 and the side surface of the substrate 100 facing the light-emitting unit 200 can be any one of 60°, 65°, 70°, 75°, or 80°.

[0063] Please see Figure 8In some optional embodiments, a second seam P2 is formed between the opposite sides of the substrates 100 of the first panel 11 and the second panel 12, and the second seam P2 is connected to the first seam P1; along a direction parallel to the plane of the substrate 100, the length c2 of the second seam P2 is less than or equal to the length c1 of the second region P12.

[0064] It is understandable that, since the side of the second adhesive layer 700 corresponding to the second region P12 needs to be inclined relative to the side surface of the substrate 100 facing the light-emitting unit 200, the length of the corresponding second region P12 can be greater than the length of the second seam P2 in the direction parallel to the plane of the substrate 100, so as to adjust and control the included angle α between the side of the second adhesive layer 700 corresponding to the second region P12 and the side surface of the substrate 100 facing the light-emitting unit 200.

[0065] In this embodiment, the cross-section of the second region P12 is gradually widened in the direction from the second adhesive layer 700 to the first adhesive layer 600. Therefore, the length of the second region P12 is not equal in the direction from the second adhesive layer 700 to the first adhesive layer 600. Along the direction parallel to the plane of the substrate 100, the length of the second seam P2 is less than or equal to the length of the second region P12. This can mean that the length of the second seam P2 is less than or equal to the length of the second region P12 at each point, that is, the minimum length of the second region P12 is greater than or equal to the length of the second seam P2.

[0066] The splicing display device 1 provided in this embodiment of the invention can be applied to mobile phones or any electronic product with display function, including but not limited to the following categories: televisions, laptops, desktop monitors, tablets, digital cameras, smart bracelets, smart glasses, vehicle displays, medical devices, industrial control equipment, touch interactive terminals, etc. This embodiment of the invention does not impose any special limitations on these.

[0067] The above are merely specific embodiments of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

[0068] It should also be noted that the exemplary embodiments mentioned in this invention describe methods or systems based on a series of steps or apparatus. However, this invention is not limited to the order of the steps described above; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

Claims

1. A splicing display device, characterized in that, include; Multiple display panels, each display panel including a substrate and a light-emitting unit disposed on one side of the substrate, wherein the multiple display panels include a first panel and a second panel disposed adjacent to each other; Wherein, the first panel includes a first side surface, the second panel includes a second side surface disposed opposite to the first side surface, the first panel includes a first light-emitting unit disposed adjacent to the first side surface, and the second panel includes a second light-emitting unit disposed adjacent to the second side surface; A first light-shielding part is provided between the first light-emitting unit and the second light-emitting unit. Along a direction parallel to the plane where the substrate is located, the orthographic projection of the first light-shielding part on the first side surface covers the orthographic projections of the first light-emitting unit and the second light-emitting unit on the first side surface.

2. The splicing display device according to claim 1, characterized in that, A first adhesive layer is provided on the side of the light-emitting unit away from the substrate; The first light-shielding part includes a first sub-light-shielding part; A first sub-light-shielding portion is provided on the side of the first adhesive layer of the first panel facing the second panel, and / or, a first sub-light-shielding portion is provided on the side of the first adhesive layer of the second panel facing the first panel.

3. The splicing display device according to claim 2, characterized in that, Along a direction parallel to the plane of the substrate, on the same display panel, the distance between the first sub-shielding portion and the adjacent light-emitting unit is greater than or equal to 5 micrometers and less than or equal to 10 micrometers.

4. The splicing display device according to claim 1, characterized in that, A first adhesive layer is provided on the side of the light-emitting unit away from the substrate; The first light-shielding part includes a first sub-light-shielding part; A first sub-light-shielding portion is provided inwardly on the first adhesive layer near the second panel relative to the first light-emitting unit, and / or, a first sub-light-shielding portion is provided inwardly on the first adhesive layer near the first panel relative to the second light-emitting unit.

5. The splicing display device according to claim 2 or 4, characterized in that, Along a direction parallel to the plane of the substrate, the length of the first sub-shielding portion is greater than or equal to 0.8 micrometers and less than or equal to 8 micrometers.

6. The splicing display device according to claim 2 or 4, characterized in that, Along the thickness direction of the display panel, the length of the first sub-light-shielding portion is equal to the thickness of the first adhesive layer.

7. The splicing display device according to claim 2 or 4, characterized in that, Along the thickness direction of the display panel, the length of the first sub-shielding portion is greater than or equal to 10 micrometers and less than or equal to 30 micrometers.

8. The splicing display device according to claim 1, characterized in that, A light-transmitting adhesive layer is provided between the first side and the second side.

9. The splicing display device according to claim 1, characterized in that, The display panel further includes a first adhesive layer and a second light-shielding portion, wherein the first adhesive layer is disposed on the side of the light-emitting unit away from the substrate; The second light-shielding portion is disposed within the first adhesive layer, and the orthographic projection of the second light-shielding portion on the substrate at least partially surrounds the orthographic projection of the light-emitting unit on the substrate.

10. The splicing display device according to claim 1, characterized in that, The display panel further includes a first adhesive layer and a second adhesive layer, wherein the first adhesive layer is disposed on the side of the light-emitting unit away from the substrate, and the second adhesive layer is disposed on the side of the first adhesive layer away from the substrate; The display panel further includes a second light-shielding portion disposed on the second adhesive layer, and the orthographic projection of the second light-shielding portion on the substrate at least partially surrounds the orthographic projection of the light-emitting unit on the substrate.

11. The splicing display device according to claim 10, characterized in that, Along the thickness direction of the display panel, the length of the second light-shielding portion is greater than or equal to 2 micrometers and less than or equal to 10 micrometers.

12. The splicing display device according to claim 1, characterized in that, It also includes a first adhesive layer and a second adhesive layer. The first adhesive layer is disposed on the side of the light-emitting unit away from the substrate, and the second adhesive layer is disposed on the side of the first adhesive layer away from the substrate and extends to cover the side of the first adhesive layer. The side of the second adhesive layer is in contact with the surface of the substrate facing the light-emitting unit; The first light-shielding portion includes a second sub-light-shielding portion, which is disposed at least between two opposing sides of the second adhesive layer of the first panel and the second panel.

13. The splicing display device according to claim 12, characterized in that, A first seam is formed between the two opposing sides of the second adhesive layer of the first panel and the second panel; From the direction of the second adhesive layer to the first adhesive layer, the first seam includes an adjoining first area and a second area; From the direction of the second adhesive layer toward the first adhesive layer, the cross-section of the first region is gradually narrowing, and the cross-section of the second region is gradually expanding.

14. The splicing display device according to claim 13, characterized in that, The angle between the side of the second adhesive layer corresponding to the second region and the side surface of the substrate facing the light-emitting unit is greater than or equal to 60° and less than or equal to 80°.

15. The splicing display device according to claim 13, characterized in that, A second seam is formed between the opposing sides of the substrates of the first panel and the second panel, and the second seam is connected to the first seam; Along a direction parallel to the plane of the substrate, the length of the second seam is less than or equal to the length of the second region.

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