Spliced display panel and spliced display device

Abstract

The application discloses a spliced display panel and a spliced display device. In the spliced display panel, a display layer includes a plurality of display parts spliced together, and the display layer includes a first light-out side and a second light-out side arranged oppositely. A first light-transmitting layer is arranged on the first light-out side of the display layer, and a first scattering coating is formed on a first surface of the first light-transmitting layer and arranged corresponding to a splicing gap between two adjacent display parts, and a normal projection of the first scattering coating on the display layer covers the splicing gap between the two adjacent display parts. A second light-transmitting layer is arranged on the second light-out side of the display layer, and a second scattering coating is formed on a second surface of the second light-transmitting layer and arranged corresponding to the splicing gap between the two adjacent display parts, and a normal projection of the second scattering coating on the display layer covers the splicing gap between the two adjacent display parts. The design of the application can eliminate the splicing gap visually.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a splicing display panel and a splicing display device. Background Technology

[0002] Currently, inorganic light-emitting diode (LED) displays mainly include Mini LED displays and Micro LED displays. Among these, Mini LEDs and Micro LEDs, used in high-end transparent large-size displays, are composed of independently displayable splicing display panels. To improve the transparency of the splicing display panels, the transmittance of the stacked structure is particularly important. However, in current transparent splicing display panels, when two separate panels are spliced ​​together, the human eye receives light reflected from the seam, making the seam noticeable and affecting the overall appearance and display effect.

[0003] There is an urgent need to improve the splicing display panel to effectively solve the problem of obvious visual gaps between the splices. Summary of the Invention

[0004] This application mainly provides a splicing display panel and splicing display device, which can reduce or even eliminate splicing seams.

[0005] To solve the above-mentioned technical problems, the technical solution adopted in this application is as follows: A splicing display panel is provided, comprising a display layer, a first light-transmitting layer, a first scattering coating, a second light-transmitting layer, and a second scattering coating. The display layer includes a plurality of display units spliced ​​together, and includes a first light-emitting side and a second light-emitting side disposed opposite to each other. The first light-transmitting layer is disposed on the first light-emitting side of the display layer, and includes a first surface facing the display layer. The first scattering coating is formed on the first surface of the first light-transmitting layer and is disposed corresponding to the splicing gap between two adjacent display units, and the orthographic projection of the first scattering coating on the display layer covers the splicing gap between two adjacent display units. The second light-transmitting layer is disposed on the second light-emitting side of the display layer, and includes a second surface facing the display layer. The second scattering coating is formed on the second surface of the second light-transmitting layer and is disposed corresponding to the splicing gap between two adjacent display units, and the orthographic projection of the second scattering coating on the display layer covers the splicing gap between two adjacent display units.

[0006] The splicing display panel further includes a first optical adhesive layer and a second optical adhesive layer. The first optical adhesive layer is located on the first light-emitting side of the display layer and is disposed between the display layer and the first light-transmitting layer. The second optical adhesive layer is located on the second light-emitting side of the display layer and is disposed between the display layer and the second light-transmitting layer.

[0007] Preferably, the structure of the first optical adhesive layer is the same as that of the second optical adhesive layer.

[0008] Wherein, the first light-transmitting layer and the second light-transmitting layer have the same structure; and / or, the first scattering coating layer and the second scattering coating layer have the same structure.

[0009] Wherein, the orthographic projection of the first scattering coating on the display layer coincides with the orthographic projection of the second scattering coating on the display layer.

[0010] Wherein, the material of the first scattering coating includes scattering particles, which are coated on the first surface of the first light-transmitting layer by doping in liquid adhesive, vapor deposition or sputtering; and / or, the material of the second scattering coating includes scattering particles, which are coated on the second surface of the second light-transmitting layer by doping in liquid adhesive, vapor deposition or sputtering.

[0011] The width of the first scattering coating satisfies the following condition: W1*(D1+4D2) / D1≤W2≤5W1; where W2 is the width of the first scattering coating, D1 is the thickness of the display layer, D2 is the thickness of the first optical adhesive layer, and W1 is the width of the splicing gap; and / or, the width of the second scattering coating satisfies the following condition: W1*(D1+4D3) / D1≤W3≤5W1; where W3 is the width of the second scattering coating and D3 is the thickness of the second optical adhesive layer.

[0012] Wherein, the thickness of the first scattering coating is less than 1 / 20 of the thickness of the first optical adhesive layer; and / or, the thickness of the second scattering coating is less than 1 / 20 of the thickness of the second optical adhesive layer.

[0013] Preferably, the thickness of the first scattering coating is 100nm-10μm; the thickness of the second scattering coating is 100nm-10μm.

[0014] Wherein, the transmittance difference between the first light-transmitting layer and the first scattering coating is less than or equal to 5%; and / or, the transmittance difference between the second light-transmitting layer and the second scattering coating is less than or equal to 5%.

[0015] Wherein, the transmittance of the first light-transmitting layer is greater than or equal to 95%; and / or, the transmittance of the second light-transmitting layer is greater than or equal to 95%.

[0016] Preferably, the thickness of the first light-transmitting layer is 0.8-10 mm; and / or, the thickness of the second light-transmitting layer is 0.8-10 mm.

[0017] Another technical solution adopted in this application is to provide a splicing display device, which includes the splicing display panel described in the above embodiments.

[0018] The beneficial effects of this application are as follows: In this application, a first scattering coating and a second scattering coating are arranged on the first surface of the first light-transmitting layer and the second surface of the second light-transmitting layer at the corresponding position of the splicing gap. The light path of the light reflected at the splicing gap is changed after passing through the scattering layer, and the reflected light at the splicing gap is scattered into diffuse reflection light. Only a small part is received by the human eye, reducing the reflected light received by the human eye at the splicing gap. At this time, the reflected light received by the human eye at the splicing gap is weakened, so that the light intensity received by the human eye is insufficient to distinguish the splicing and transparent display areas, thereby achieving the effect of weakening the visual perception of the splicing gap. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of one embodiment of a splicing display panel in the prior art;

[0021] Figure 2 This is a schematic diagram of one embodiment of the splicing display panel in this application;

[0022] Figure 3 for Figure 2 A schematic diagram of one embodiment of the light source in a splicing display panel;

[0023] Figure 4 for Figure 2 A structural schematic diagram of one embodiment of a splicing display panel.

[0024] Explanation of reference numerals in the attached drawings: 100 Splicing display panel; 1 Display layer; 11 Display section; 12 First light-emitting side; 13 Second light-emitting side; 2 First light-transmitting layer; 21 First surface; 3 First scattering coating; 4 Second light-transmitting layer; 41 Second surface; 5 Second scattering coating; 6 Splicing gap; 7 First optical adhesive layer; 8 Second optical adhesive layer; θ Angle; W2 Width of the first scattering coating; D1 Thickness of the display layer; D2 Thickness of the first optical adhesive layer; W1 Width of the splicing gap; W3 Width of the second scattering coating; D3 Thickness of the second optical adhesive layer. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0030] Please see Figure 1 In the existing splicing display panel 100, light passing through the splicing gap 6 is absorbed by the human eye. The light intensity received by the human eye can clearly distinguish the splicing gap 6 from the transparent display area, making the splicing gap 6 visually obvious and affecting the visual effect.

[0031] Please see Figure 2 and Figure 3 This application provides a splicing display panel 100, which includes a display layer 1, a first light-transmitting layer 2, a first scattering coating 3, a second light-transmitting layer 4, and a second scattering coating 5. The display layer 1 includes multiple display units 11 spliced ​​together, and includes a first light-emitting side 12 and a second light-emitting side 13 disposed opposite to each other; a first light-transmitting layer 2 is disposed on the first light-emitting side 12 of the display layer 1, and includes a first surface 21 facing the display layer 1; a first scattering coating 3 is formed on the first surface 21 of the first light-transmitting layer 2 and is disposed corresponding to the splicing gap 6 between two adjacent display units 11, and the orthographic projection of the first scattering coating 3 on the display layer 1 covers the splicing gap 6 between two adjacent display units 11; a second light-transmitting layer 4 is disposed on the second light-emitting side 13 of the display layer 1, and includes a second surface 41 facing the display layer 1; a second scattering coating 5 is formed on the second surface 41 of the second light-transmitting layer 4 and is disposed corresponding to the splicing gap 6 between two adjacent display units 11, and the orthographic projection of the second scattering coating 5 on the display layer 1 covers the splicing gap 6 between two adjacent display units 11.

[0032] Specifically, the splicing display panel 100 in this application can achieve double-sided display, and multiple display units 11 all have the function of double-sided display. The multiple display units 11 are spliced ​​together to form the display layer 1 of the splicing display panel 100. A first light-transmitting layer 2 is provided on the first light-emitting side 12 of the display layer 1. The first light-transmitting layer 2 is made of a light-transmitting material to facilitate the display of the content on the first light-emitting side 12 of the display layer 1. A first scattering coating 3 is provided on the first surface 21 of the first light-transmitting layer 2 near the first light-emitting side 12. At the same time, the orthographic projection of the first scattering coating 3 on the first light-transmitting layer 2 covers the orthographic projection of the splicing gap 6 between two adjacent display units 11 on the first light-transmitting layer 2. This allows the light emitted through the splicing gap 6 to pass through the first scattering coating 3 before being emitted again. The first scattering coating 3 scatters the light, thereby reducing the visual appearance of the splicing gap 6. A second light-transmitting layer 4 is provided on the second light-emitting side 13 of the display layer 1. The second light-transmitting layer 4 is made of a light-transmitting material to facilitate the display of the content on the second light-emitting side 13 of the display layer 1. A second scattering coating 5 is provided on the second surface 41 of the second light-transmitting layer 4 near the second light-emitting side 13. The orthographic projection of the second scattering coating 5 on the second light-transmitting layer 4 covers the orthographic projection of the splicing gap 6 between two adjacent display units 11 on the second light-transmitting layer 4. This causes the light emitted through the splicing gap 6 to pass through the second scattering coating 5 before being emitted again. The second scattering coating 5 scatters the light, thereby reducing the visual appearance of the splicing gap 6.

[0033] As can be seen from the above, by arranging the first scattering coating 3 and the second scattering coating 5 on the first surface 21 of the first light-transmitting layer 2 and the second surface 41 of the second light-transmitting layer 4 at the corresponding positions of the splicing seam 6, the light path of the light reflected at the splicing seam 6 is changed after passing through the scattering layer, scattering the reflected light at the splicing seam 6 into diffuse reflection light. Only a small amount of light is received by the human eye, reducing the amount of reflected light received by the human eye at the splicing seam 6. At this time, the reflected light received by the human eye at the splicing seam 6 is weakened, making the light intensity received by the human eye insufficient to distinguish the splicing seam 6 from the transparent display area, thereby achieving the effect of weakening the visual perception of the splicing seam 6.

[0034] Please continue reading. Figure 2 and Figure 3 The splicing display panel 100 also includes a first optical adhesive layer 7 and a second optical adhesive layer 8. The first optical adhesive layer 7 is located on the first light-emitting side 12 of the display layer 1 and is disposed between the display layer 1 and the first light-transmitting layer 2. The second optical adhesive layer 8 is located on the second light-emitting side 13 of the display layer 1 and is disposed between the display layer 1 and the second light-transmitting layer 4.

[0035] Specifically, the first optical adhesive layer 7 serves to bond the display layer 1 and the first light-transmitting layer 2; the second optical adhesive layer 8 serves to bond the display layer 1 and the second light-transmitting layer 4.

[0036] In one embodiment, the materials of the first optical adhesive layer 7 and the second optical adhesive layer 8 include at least one of acrylate optical adhesive (OCA), silicone optical adhesive, epoxy resin optical adhesive, and polyurethane optical adhesive. OCA, in particular, exhibits high light transmittance (typically exceeding 90%), low haze, and good adhesion, and its optical performance is stable, maintaining good optical effects under various environmental conditions. The materials of the first optical adhesive layer 7 and the second optical adhesive layer 8 can be selected from a variety of options to meet the needs of specific application scenarios.

[0037] In one embodiment, the structure of the first optical adhesive layer 7 is the same as that of the second optical adhesive layer 8. Specifically, the thickness D3 of the second optical adhesive layer 8 is the same as the thickness D2 of the first optical adhesive layer 7, and the material of the second optical adhesive layer 8 is the same as that of the first optical adhesive layer 7. Therefore, the first optical adhesive layer 7 and the second optical adhesive layer 8 can be prepared using the same process, which improves preparation efficiency and reduces preparation costs. Of course, in other embodiments, the material and thickness of the second optical adhesive layer 8 can be different from those of the first optical adhesive layer 7. Furthermore, both the first optical adhesive layer 7 and the second optical adhesive layer 8 can be formed into a multilayer structure by multiple laminations using flowable adhesives or solid optically transparent adhesives. Alternatively, both the first optical adhesive layer 7 and the second optical adhesive layer 8 can be single-layer structures.

[0038] Please continue reading. Figure 2 and Figure 3 The first light-transmitting layer 2 and the second light-transmitting layer 4 have the same structure. Specifically, the first light-transmitting layer 2 and the second light-transmitting layer 4 can be made of the same material and have the same thickness, so that the first light-transmitting layer 2 and the second light-transmitting layer 4 can be prepared using the same process and the same preparation parameters, which can improve the preparation efficiency and reduce the preparation cost.

[0039] In one embodiment, the materials of the first light-transmitting layer 2 and the second light-transmitting layer 4 include anti-reflective glass (AR glass), also known as anti-reflective glass. This is a specially treated optical glass that reduces surface reflectivity and increases light transmittance by coating one or more optical thin films onto the glass surface, thereby improving display performance. AR glass features high light transmittance, low reflectivity, good wear and corrosion resistance, and high flatness. Furthermore, AR glass has extremely high flatness, meeting the high precision requirements of display panels for cover glass and ensuring that the displayed image is not distorted or deformed due to unevenness on the glass surface. Due to its excellent optical performance and physical properties, AR glass can meet the usage requirements of the first light-transmitting layer 2 and the second light-transmitting layer 4.

[0040] In one embodiment, the transmittance of the first light-transmitting layer 2 is greater than or equal to 95%. For example, the transmittance of the first light-transmitting layer 2 can be 95%, 96%, 97%, 98%, or 99%. This setting can enable the display panel to have higher brightness and more accurate colors to improve the display effect, while also enhancing the user experience.

[0041] In one embodiment, the transmittance of the second light-transmitting layer 4 is greater than or equal to 95%. Specifically, the transmittance of the second light-transmitting layer 4 can be 95%, 96%, 97%, 98%, or 99%. This setting allows the display panel to have higher brightness and more accurate colors to improve the display effect, while also enhancing the user experience.

[0042] In one embodiment, the thickness of the first light-transmitting layer 2 is 0.8-10 mm. Specifically, the thickness of the first light-transmitting layer 2 can be 0.8 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm. This configuration can reduce the overall size and enhance the product's market competitiveness.

[0043] In one embodiment, the second light-transmitting layer 4 has a thickness of 0.8-10 mm. Specifically, the thickness of the second light-transmitting layer 4 can be 0.8 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm. This configuration can reduce the overall size and enhance the product's market competitiveness.

[0044] In one embodiment, the first scattering coating 3 and the second scattering coating 5 have the same structure. Specifically, the thickness of the first scattering coating 3 and the thickness of the second scattering coating 5 are the same, and the materials of the first scattering coating 3 and the second scattering coating 5 are the same. Therefore, the same materials and the same preparation parameters can be used to prepare the first scattering coating 3 and the second scattering coating 5 during the preparation process, which can improve the preparation efficiency and reduce the preparation cost.

[0045] Please see Figure 4 The orthographic projection of the first scattering coating 3 onto the display layer 1 coincides with the orthographic projection of the second scattering coating 5 onto the display layer 1. Specifically, the width W2 of the first scattering coating 3 and the width W3 of the second scattering coating 5 are the same, so that the same preparation parameters can be used to prepare the first scattering coating 3 and the second scattering coating 5 during the preparation process, which can improve the preparation efficiency and reduce the preparation cost.

[0046] Of course, in other embodiments, the width W2 of the first scattering coating 3 and the width W3 of the second scattering coating 5 may also be different. For example, the width W2 of the first scattering coating 3 may be greater than the width W3 of the second scattering coating 5, or the width W3 of the second scattering coating 5 may be greater than the width W2 of the first scattering coating 3.

[0047] In one embodiment, the material of the first scattering coating 3 includes scattering particles, which are coated onto the first surface 21 of the first light-transmitting layer 2 by doping with liquid adhesive, vapor deposition, or sputtering. Specifically, the first scattering coating 3 scatters light passing through the splicing gap 6 through the scattering effect of the scattering particles, reducing or even eliminating the visual appearance of the splicing gap 6. Specifically, the scattering particles can be doped into the liquid adhesive and coated onto the first surface 21 of the first light-transmitting layer 2, or the scattering particles can be coated onto the first surface 21 of the first light-transmitting layer 2 by vapor deposition or sputtering, which facilitates preparation while ensuring the scattering effect. In addition, the first scattering coating 3 is first prepared on the first surface 21 of the first light-transmitting layer 2, and then the first light-transmitting layer 2 with the first scattering coating 3 and the display layer 1 are bonded together by the first optical adhesive layer 7. The scattering efficiency of the first scattering coating 3 is not lower than the overall transparency value of the splicing display panel 100. For example, if the overall transparency value of the splicing display panel 100 is 70%, then the transmittance after scattering by the first scattering coating 3 is greater than or equal to 70% to ensure the overall display effect.

[0048] In one embodiment, the material of the second scattering coating 5 includes scattering particles, which are coated onto the second surface 41 of the second light-transmitting layer 4 by doping with liquid adhesive, vapor deposition, or sputtering. Specifically, the second scattering coating 5 scatters light passing through the splicing gap 6 through the scattering effect of the scattering particles, reducing or even eliminating the visual appearance of the splicing gap 6. Specifically, the scattering particles can be doped into the liquid adhesive and coated onto the second surface 41 of the second light-transmitting layer 4, or the scattering particles can be coated onto the second surface 41 of the second light-transmitting layer 4 by vapor deposition or sputtering, which facilitates preparation while ensuring the scattering effect. In addition, the second scattering coating 5 is first prepared on the second surface 41 of the second light-transmitting layer 4, and then the second light-transmitting layer 4 with the prepared second scattering coating 5 and the display layer 1 are bonded together by the second optical adhesive layer 8. The scattering efficiency of the second scattering coating 5 is not lower than the overall transparency value of the splicing display panel 100. For example, if the overall transparency value of the splicing display panel 100 is 70%, then the transmittance after scattering by the second scattering coating 5 is greater than or equal to 70% to ensure the overall display effect.

[0049] Please continue reading. Figure 4 The width W2 of the first scattering coating 3 satisfies the following condition: W1*(D1+4D2) / D1≤W2≤5W1; where W2 is the width of the first scattering coating 3, D1 is the thickness of the display layer 1, D2 is the thickness of the first optical adhesive layer 7, and W1 is the width of the splicing gap 6. Figure 4As shown, a line segment is drawn starting from the midpoint of the edge of the display unit 11. This line segment passes through the corner of the first light-emitting side 12 in the display unit 11 and extends to the first surface 21 of the first light-transmitting layer 2. The angle between this line segment and the horizontal line is θ. At this time, tanθ=(D1 / 2) / W1=D2 / [(W2-W1) / 2]. From the above formula, we can obtain W2=W1×(D1+4D2) / D1, which is the minimum value of W2. In one embodiment, the maximum value of W2 is 5W1 to ensure that the light from the first light-emitting side 12 in the display unit 11 is not scattered over a large area by the first scattering coating 3, thus ensuring the display effect.

[0050] Please continue reading. Figure 4 The width W3 of the second scattering coating 5 satisfies the following condition: W1*(D1+4D3) / D1≤W3≤5W1; where W3 is the width of the second scattering coating 5 and D3 is the thickness of the second optical adhesive layer 8. Figure 4 As shown, a line segment is drawn starting from the midpoint of the edge of the display unit 11. This line segment passes through the corner of the second light-emitting side 13 in the display unit 11 and extends to the second surface 41 of the second light-transmitting layer 4. The angle between this line segment and the horizontal line is θ. At this time, tanθ=(D1 / 2) / W1=D3 / [(W3-W1) / 2]. From the above formula, we can obtain W3=W1×(D1+4D3) / D1, which is the minimum value of W3. In one embodiment, the maximum value of W3 is 5W1 to ensure that the light from the second light-emitting side 13 in the display unit 11 is not scattered over a large area by the second scattering coating 5, thus ensuring the display effect.

[0051] In one embodiment, the thickness of the first scattering coating 3 is less than 1 / 20 of the thickness of the first optical adhesive layer 7. Specifically, the thickness of the first scattering coating 3 can be 1 / 22, 1 / 24, 1 / 26, 1 / 28, or 1 / 30 of the thickness of the first optical adhesive layer 7, etc., to ensure that when the first optical adhesive layer 7 is bonded, there will be no obvious delamination due to the height difference between the first scattering coating 3 and the first optical adhesive layer 7, which would affect the display effect.

[0052] In one embodiment, the thickness of the second scattering coating 5 is less than 1 / 20 of the thickness of the second optical adhesive layer 8. Specifically, the thickness of the second scattering coating 5 can be 1 / 22, 1 / 24, 1 / 26, 1 / 28, or 1 / 30 of the thickness of the second optical adhesive layer 8 to ensure that no obvious delamination occurs due to the height difference between the second scattering coating 5 and the second optical adhesive layer 8 during the bonding process, thus affecting the display effect.

[0053] In one embodiment, the thickness of the first scattering coating 3 is 100 nm to 10 μm. Specifically, the thickness of the first scattering coating 3 is 100 nm, 500 nm, 800 nm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, or 10 μm. Specifically, the thickness of the first scattering coating 3 is sufficiently thin to reduce the overall volume and achieve a lightweight design.

[0054] In one embodiment, the thickness of the second scattering coating 5 is 100 nm to 10 μm. Specifically, the thickness of the second scattering coating 5 is 100 nm, 500 nm, 800 nm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, or 10 μm. Specifically, the thickness of the second scattering coating 5 is sufficiently thin to reduce the overall volume and achieve a lightweight design.

[0055] In one embodiment, the transmittance difference between the first light-transmitting layer 2 and the first scattering coating 3 is less than or equal to 5%. Specifically, the transmittance difference between the first light-transmitting layer 2 and the first scattering coating 3 is 1%, 2%, 3%, 4%, or 5%, to ensure that the position of the first scattering coating 3 does not differ from other positions during viewing.

[0056] In one embodiment, the transmittance difference between the second light-transmitting layer 4 and the second scattering coating 5 is less than or equal to 5%. Specifically, the transmittance difference between the second light-transmitting layer 4 and the second scattering coating 5 is 1%, 2%, 3%, 4%, or 5%, to ensure that the position of the second scattering coating 5 does not differ from other positions during viewing.

[0057] This application also provides a splicing display device, which includes the splicing display panel 100 described in the above embodiments. The splicing display device in the embodiments of the present invention can be any product or component with display function, such as electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame or navigator.

[0058] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A splicing display panel, characterized in that, include: The display layer includes multiple display units spliced ​​together, and the display layer includes a first light-emitting side and a second light-emitting side arranged opposite to each other; A first light-transmitting layer is disposed on the first light-emitting side of the display layer, and the first light-transmitting layer includes a first surface facing the display layer; A first scattering coating is formed on the first surface of the first light-transmitting layer and is disposed corresponding to the splicing gap between two adjacent display units. At the same time, the orthographic projection of the first scattering coating on the display layer covers the splicing gap between two adjacent display units. A second light-transmitting layer is disposed on the second light-emitting side of the display layer, and the second light-transmitting layer includes a second surface facing the display layer; The second scattering coating is formed on the second surface of the second light-transmitting layer and is disposed corresponding to the splicing gap between two adjacent display units, and the orthographic projection of the second scattering coating on the display layer covers the splicing gap between two adjacent display units.

2. The splicing display panel according to claim 1, characterized in that, Also includes: The first optical adhesive layer is located on the first light-emitting side of the display layer and is disposed between the display layer and the first light-transmitting layer; The second optical adhesive layer is located on the second light-emitting side of the display layer and is disposed between the display layer and the second light-transmitting layer; Preferably, the structure of the first optical adhesive layer is the same as that of the second optical adhesive layer.

3. The splicing display panel according to claim 1, characterized in that, The first light-transmitting layer and the second light-transmitting layer have the same structure; And / or, the first scattering coating has the same structure as the second scattering coating.

4. The splicing display panel according to claim 1, characterized in that, The orthographic projection of the first scattering coating on the display layer coincides with the orthographic projection of the second scattering coating on the display layer.

5. The splicing display panel according to claim 1, characterized in that, The material of the first scattering coating includes scattering particles, which are coated on the first surface of the first light-transmitting layer by doping in liquid adhesive, vapor deposition, or sputtering. And / or, the material of the second scattering coating includes scattering particles, which are coated on the second surface of the second light-transmitting layer by means of doping in liquid adhesive, vapor deposition or sputtering.

6. The splicing display panel according to claim 2, characterized in that, The width of the first scattering coating satisfies the following condition: W1*(D1+4D2) / D1≤W2≤5W1; Wherein, W2 is the width of the first scattering coating, D1 is the thickness of the display layer, D2 is the thickness of the first optical adhesive layer, and W1 is the width of the splicing gap; And / or, the width of the second scattering coating satisfies the following condition: W1*(D1+4D3) / D1≤W3≤5W1; Wherein, W3 is the width of the second scattering coating and D3 is the thickness of the second optical adhesive layer.

7. The splicing display panel according to claim 2, characterized in that, The thickness of the first scattering coating is less than 1 / 20 of the thickness of the first optical adhesive layer; And / or, the thickness of the second scattering coating is less than 1 / 20 of the thickness of the second optical adhesive layer; Preferably, the thickness of the first scattering coating is 100 nm to 10 μm; The thickness of the second scattering coating is 100nm-10μm.

8. The splicing display panel according to claim 2, characterized in that, The difference in transmittance between the first light-transmitting layer and the first scattering coating is less than or equal to 5%. And / or, the difference in transmittance between the second light-transmitting layer and the second scattering coating is less than or equal to 5%.

9. The splicing display panel according to claim 1, characterized in that, The transmittance of the first light-transmitting layer is greater than or equal to 95%; And / or, the transmittance of the second light-transmitting layer is greater than or equal to 95%; Preferably, the thickness of the first light-transmitting layer is 0.8-10 mm; And / or, the second light-transmitting layer is 0.8-10 mm thick.

10. A splicing display device, characterized in that, include: The splicing display panel according to any one of claims 1-9.

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