Splicing display device and display equipment

Abstract

The embodiment of the invention provides a tiled display device and display equipment, relates to the technical field of display, and aims to solve the problem that the image quality and taste of the tiled display device are affected due to the fact that LED light bars have obvious mirror reflection in the related technology. The tiled display device comprises a plurality of first display panels, a second display panel and a first optical structure. A gap is formed between every two adjacent first display panels, the second display panels are located at the gaps, each second display panel comprises a plurality of light-emitting chips, and the first optical structures are arranged on the light-emitting sides of the second display panels.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a spliced ​​display device and a display equipment. Background Art

[0002] In the related art, the spliced ​​display device includes a plurality of first display panels and a second display panel, the second display panel is arranged in the gap between adjacent first display panels, and the second display panel is usually an LED light bar of a plurality of light-emitting chips. Since the plurality of light-emitting chips are usually arranged in a rectangular shape and the light-emitting chips have a relatively obvious mirror reflection, the second display panel has a problem of inconsistent reflection at different viewing angles, thereby affecting the image quality of the spliced ​​display device. Summary of the invention

[0003] The embodiments of the present application provide a spliced ​​display device and a display apparatus, which are used to at least solve the problem in the related art that the LED light bar has obvious mirror reflection and affects the image quality of the spliced ​​display device.

[0004] On the one hand, an embodiment of the present application provides a spliced ​​display device, which includes a plurality of first display panels, a second display panel, and a first optical structure. A gap is provided between two adjacent first display panels, the second display panel is located at the gap, the second display panel includes a plurality of light-emitting chips, and the first optical structure is provided on the light-emitting side of the second display panel.

[0005] In some embodiments, the first optical structure includes a substrate and a first optical film layer located on the substrate, and the first optical film layer is disposed on a side of the substrate away from the second display panel; a plurality of particles are disposed in the first optical film layer, and an average diameter of the particles is greater than or equal to 3 μm and less than or equal to 5 μm.

[0006] In some embodiments, an adhesive layer is further disposed between the second display panel and the first optical structure, and the adhesive layer includes a plurality of diffusion particles.

[0007] In some embodiments, the spliced ​​display device further includes a second optical structure located on the first display panel.

[0008] In some embodiments, the second optical structure includes a substrate and a second optical film layer disposed on the substrate, a plurality of granules are disposed in the second optical film layer, and an average diameter of the granules is the same as an average diameter of the particles.

[0009] In some embodiments, the thickness of the second optical structure is less than the thickness of the first optical structure.

[0010] In some embodiments, a top surface of the second optical structure and a top surface of the first optical structure are located in the same plane.

[0011] In some embodiments, the first display panel includes a display portion and a peripheral portion located on one side of the display portion, and the second display panel is disposed on the peripheral portion and covers a portion of the display portion.

[0012] In some embodiments, a cover plate is further provided between the first display panel and the second optical structure, and the second optical structure is connected to the cover plate via an adhesive layer.

[0013] In some embodiments, the first display panel is a liquid crystal display panel, and the light emitting chip is a light emitting diode chip.

[0014] On the other hand, an embodiment of the present application further provides a display device, which includes the splicing display device as described in any of the above embodiments.

[0015] For the spliced ​​display device provided in the embodiment of the present application, since the light-emitting side of the second display panel is provided with a first optical structure for diffusely reflecting ambient light, on the one hand, the ambient light is diffusely reflected by the first optical structure, thereby effectively avoiding the problem that the second display panel has inconsistent reflections at different viewing angles and affects the image quality of the spliced ​​display device. On the other hand, due to the modulation of the ambient light by the first optical structure, the amount of light reflected by the mirror surface of the light-emitting chip is reduced, thereby reducing the mirror reflection of the second display panel, and significantly improving the image quality of the spliced ​​display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 is a top view of a spliced ​​display device provided in some embodiments of the present application;

[0018] Figure 2 is a cross-sectional view of a spliced ​​display device provided by some embodiments of the present application;

[0019] Figure 3 is a cross-sectional view of a first optical structure according to some embodiments of the present application;

[0020] Figure 4 is a schematic diagram of the propagation of ambient light in a partial structure of a spliced ​​display device;

[0021] Figure 5 is a graph showing a change in reflectivity of the first film layer structure before and after the film is provided according to some embodiments of the present application;

[0022] Figure 6 is a cross-sectional view of a display device provided in some embodiments of the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The described technical solutions are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0024] In the description of this application, it should be understood that the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different technical features. The term "plurality" and similar words mean two or more, unless otherwise clearly defined.

[0025] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0026] The use of "suitable for" or "configured to" in this application is meant to be open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. In addition, the use of "based on" is meant to be open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values ​​can be based on additional conditions or values ​​beyond the stated values ​​in practice.

[0027] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present application.

[0028] The various embodiments of the present application are similar, and features in different embodiments and / or different examples may be combined with each other.

[0029] Some embodiments of the present application provide a spliced ​​display device, such as Figure 1 and Figure 2As shown, the spliced ​​display device 100 includes a plurality of first display panels 10 and a second display panel 20, a gap K is provided between two adjacent first display panels 10, and the second display panel 20 is located at the gap K. By covering the gap K with the second display panel 20, the image presented by the spliced ​​display device 100 will not have gaps, thereby improving the user's viewing experience and use experience. Among them, the display surface of the first display panel 10 and the display surface of the second display panel 20 together constitute the display surface of the spliced ​​display device 100, so that the user can view the display image from the display surface of the spliced ​​display device 100.

[0030] like Figure 2 As shown, the second display panel 20 includes a plurality of light-emitting chips 201. The length direction of the second display panel 20 is the same as the length direction of the gap K, and the plurality of light-emitting chips 201 are arranged along the length direction of the second display panel 20. The second display panel 20 also includes a circuit board, which is electrically connected to the light-emitting chip 201, so as to control the opening or closing of the light-emitting chip 201. As an example, a plurality of adjacent light-emitting chips 201 with different light-emitting colors can form a light-emitting pixel, and a plurality of light-emitting pixels are provided on the second display panel 20. By controlling each light-emitting pixel to emit light, the screen display of the second display panel 20 can be realized. In addition, three light-emitting chips 201 arranged along the length direction of the second display panel 20 can form a light-emitting pixel, and the three light-emitting chips 201 emit red light, green light and blue light respectively. By controlling each light-emitting chip 201 to emit light, the color display of the second display panel 20 can be realized. Among them, the light-emitting chip 201 can be a light-emitting diode (LED) chip.

[0031] In this embodiment, the spliced ​​display device 100 further includes a first optical structure 31, which is disposed on the light-emitting side of the second display panel 20. The first optical structure 31 can be used to diffusely reflect light (e.g., ambient light) from the light-emitting side of the second display panel 20 toward the first optical structure 31. The display surface of the second display panel 20 is located on its light-emitting side.

[0032] For the spliced ​​display device 100 provided in the embodiment of the present application, since the light-emitting side of the second display panel 20 is provided with the first optical structure 31, on the one hand, the first optical structure 31 is used to realize diffuse reflection of ambient light, thereby effectively avoiding the problem that the second display panel 20 reflects light inconsistently at different viewing angles and affects the image quality of the spliced ​​display device. On the other hand, the first optical structure 31 can also modulate the ambient light, so that the amount of light reflected by the light-emitting chip 201 is reduced, thereby reducing the mirror reflection of the second display panel 20, and significantly improving the image quality of the spliced ​​display device.

[0033] In some examples, the first display panel 10 is a liquid crystal display panel. For example, the first display panel 10 includes: a color filter substrate and an array substrate arranged in a box, and a liquid crystal layer between the color filter substrate and the array substrate. On this basis, a backlight source is also provided on the side of the array substrate away from the liquid crystal layer. By controlling the deflection of the liquid crystal molecules in the liquid crystal layer, the light emitted by the backlight source can be emitted from the corresponding liquid crystal molecules, so that it can be seen by the user to realize the display of the first display panel 10. Since the second display panel 20 realizes the display through the deflection of the liquid crystal molecules, and when the first display panel 10 is in the closed state, all liquid crystal molecules are not deflected, so that the reflectivity of the first display panel 10 at all viewing angles remains consistent, and there will be no inconsistent reflection when observed from different viewing angles.

[0034] In some examples, a first polarizer 61 is provided between the backlight source and the array substrate, and a second polarizer 62 is provided on the side of the color film substrate away from the liquid crystal layer. The polarization direction of the first polarizer 61 is perpendicular to the polarization direction of the second polarizer 62. In this way, when the liquid crystal molecules are deflected, the light emitted from the backlight source can pass through the second polarizer 62, so as to realize the picture display of the first display panel 10.

[0035] In some embodiments, Figure 3 As shown, the first optical structure 31 includes a substrate 311 and a first optical film layer 312 located on the substrate 311, and the first optical film layer 312 is disposed on a side of the substrate 311 away from the second display panel 20. A plurality of particles 3121 are disposed in the first optical film layer 312. In this case, the presence of the particles 3121 can form a plurality of depressions and protrusions on the surface of the first optical film layer 312 away from the substrate 311, so that the first optical structure 31 has a good diffuse reflection effect. In addition, the particles 3121 also produce heat dissipation and diffuse reflection effects on light, thereby enhancing the diffuse reflection effect of the first optical structure 31.

[0036] In some examples, the average diameter of the particles 3121 is greater than or equal to 3 μm and less than or equal to 5 μm. As an example, the average diameter of the particles 3121 can be 3 μm, 3.5 μm, 4 μm, 4.5 μm, 5 μm, or other values ​​between 3 μm and 5 μm, which is not limited in the embodiments of the present application.

[0037] Through the above arrangement, on the one hand, it is possible to avoid the average diameter of the particles 3121 being too small and difficult to manufacture, thereby avoiding the increase in cost due to the manufacture of particles 3121 with a smaller average diameter; on the other hand, it is possible to avoid the problem of poor diffuse reflection effect of light due to the average diameter of the particles 3121 being too large. Therefore, since the embodiment of the present application sets the average diameter of the particles 3121 within the above range, it is possible to ensure that the first optical structure 31 has a good diffuse reflection effect while also saving costs.

[0038] In some examples, the first optical film layer 312 may include a resin, and the particles 3121 are mainly gathered on the surface of the resin, so that a plurality of depressions and protrusions are formed on the surface of the first optical film layer 312 away from the substrate 311. In addition, the first optical film layer 312 may also include an additive. For example, the additive may be selected from one or more of a light stabilizer, an ultraviolet absorber, a flame retardant, and an antioxidant, etc., as needed.

[0039] In some examples, the particles 3121 may be spherical microstructures made of inorganic or organic materials.

[0040] In some examples, the substrate 311 may be made of a light-transmitting material, such as a polymer material such as polyethylene terephthalate.

[0041] In some embodiments, Figure 2 As shown, an adhesive layer 41 is further provided between the second display panel 20 and the first optical structure 31. The first optical structure 31 can be bonded to the light-emitting side of the second display panel 20 by means of the adhesive layer 41 to ensure its firmness, so as to avoid its easy displacement and cause the display surface of the second display panel 20 to have inconsistent reflections at different viewing angles again. In addition, since the first optical structure 31 is fixed to the second display panel 20 by bonding, it is possible to avoid processing the surface of the second display panel 20 by etching or spraying to produce a film layer having the same function as the first optical structure 31, which is conducive to reducing the production cost.

[0042] In some examples, such as Figure 4 As shown, the adhesive layer 41 includes a plurality of diffusion particles 411. The diffusion particles 411 can make the adhesive layer 41 have a certain haze, thereby effectively suppressing the reflection effect of the light emitting chip 201 in the second display panel 20, thereby effectively improving the image quality of the spliced ​​display device 100.

[0043] When the ambient light is directed toward the first optical structure 31, part of the light is diffusely reflected at the first optical film layer 312. Figure 4As shown in the area labeled S1, part of the light is reflected in different directions; another part of the light passes through the first optical structure 31 and is incident on the adhesive layer 41, as shown in FIG. Figure 4 As shown in the area labeled S2, part of the light in the first optical structure 31 is transmitted and absorbed in the first optical structure 31, and another part of the light is incident on the second display panel 20; then, the light incident on the second display panel 20 is reflected by the light emitting chip 201, and part of the light passes through the adhesive layer 41 and the first optical structure 31 in sequence, and then is emitted. The optical path of this part of the light is as shown in FIG. Figure 4 Therefore, after the spliced ​​display device 100 includes the first optical structure 31 and the adhesive layer 41, the amount of light as shown by the route marked S3 is effectively reduced, thereby ensuring that the spliced ​​display device 100 has good image quality.

[0044] As an example, the haze of the adhesive layer 41 can be greater than or equal to 70% and less than or equal to 80%, so that it can ensure that the reflection of the light-emitting chip 201 is well suppressed while ensuring that the light emitted by the second display panel 20 can be smoothly emitted from the adhesive layer 41.

[0045] In some examples, the material of the diffusion particles 411 may be an organic material such as polymethyl methacrylate or polystyrene, or an inorganic material such as silicon dioxide.

[0046] In some examples, the adhesive layer 41 further includes a substrate layer, and the diffusion particles 411 are located in the substrate layer. The substrate layer can be made of a material with good light transmittance such as optically clear adhesive (OCA), so as to ensure the display effect of the second display panel 20.

[0047] In some embodiments, Figure 2 As shown, the spliced ​​display device 100 further includes a second optical structure 32 located on the first display panel 10. The second optical structure 32 can diffusely reflect the ambient light directed to the first display panel 10, thereby avoiding the problem that the surface reflectivity on the first display panel 10 and the surface reflectivity of the first optical structure 31 located on the second display panel 20 differ too much, thereby reducing the image quality of the spliced ​​display device 100.

[0048] In some embodiments, the second optical structure 32 includes a substrate and a second optical film layer disposed on the substrate, and a plurality of granules are disposed in the second optical film layer, and the average diameter of the granules is the same as the average diameter of the particles. In this case, the surface reflectivity of the second optical structure 32 is substantially the same as the surface reflectivity of the first optical structure 31, so that the display side of the spliced ​​display device 100 has a relatively consistent surface reflectivity, thereby ensuring that the spliced ​​display device 100 has a good picture quality.

[0049] As an example, the average diameter of the granules and the average diameter of the particles are both 3 μm.

[0050] In some examples, the second optical film layer may include resin, and the granules are mainly gathered on the surface of the resin, so that a plurality of depressions and protrusions are formed on the surface of the second optical film layer away from the substrate. In addition, the second optical film layer may also include additives.

[0051] In some examples, the structure and material of the substrate can be set with reference to the structure and material of the above-mentioned substrate, and the structure and material of the granular material can be set with reference to the structure and material of the above-mentioned particles.

[0052] In some examples, such as Figure 2 As shown, the first thickness D1 of the second optical structure 32 is different from the second thickness D2 of the first optical structure 31 .

[0053] It is worth noting that, since the first film layer structure (e.g., cover plate) located on the light-exiting side of the first display panel 10 and disposed under the second optical structure 32 is different from the second film layer structure (e.g., adhesive layer 41) located on the light-exiting side of the second display panel 20 and disposed under the first optical structure 31, and the thickness of the first film layer structure is different from the thickness of the second film layer structure, this results in the reflectivity of the first film layer structure being different from the reflectivity of the second film layer structure. After the second optical structure 32 is disposed on the first film layer structure or the first optical structure 31 is disposed on the second film layer structure, the overall reflectivity will change. The following is an example of the change in reflectivity before and after a thin film is disposed on the first film layer structure.

[0054] like Figure 5As shown, when the thin film is not set, the reflectivity R of the first film layer structure remains unchanged, and its reflectivity R is shown as the horizontal dotted line in the figure; after the thin film is set, the reflectivity R of the overall structure (including the first film layer and the thin film) changes as a curve. It should be noted that after the thin film is set, the reflectivity R is related to the refractive index n of the thin film, the thickness d of the thin film, and the wavelength λ of the incident light, and the reflectivity R changes periodically with the value of nd / λ. Among them, nd / λ is the ratio of the product of the refractive index n and the thickness d to the wavelength λ. In addition, the curve at the bottom of the figure is the change curve of the reflectivity R with nd / λ when the refractive index is equal to 1.38, and the curve in the middle of the figure is the change curve of the reflectivity R with nd / λ when the refractive index is equal to 1.8. Figure 5 The top curve in the middle (the curve shown by the dotted line) is a curve showing how the reflectivity R changes with nd / λ when the refractive index is equal to 2.38.

[0055] Therefore, if the material of the second optical structure 32 and the first optical structure 31 is the same (i.e., the refractive index of the two is the same), and the first thickness D1 of the second optical structure 32 is the same as the second thickness D2 of the first optical structure 31, this will result in the overall reflectivity of all film layer structures (including the first film layer structure and the second optical structure 32) located on the light-emitting side of the first display panel 10 being different from the overall reflectivity of all film layer structures (including the second film layer structure and the first optical structure 31) located on the light-emitting side of the second display panel 20, which will have an adverse effect on the picture quality of the spliced ​​display device 100.

[0056] In this case, the embodiment of the present application sets the first thickness D1 of the second optical structure 32 to be different from the second thickness D2 of the first optical structure 31. In this way, the thickness of the second optical structure 32 and the first optical structure 31 can be adjusted so that the overall reflectivity of all film layer structures on the light-emitting side of the first display panel 10 and the overall reflectivity of all film layer structures on the light-emitting side of the second display panel 20 are roughly the same, thereby ensuring that the spliced ​​display device 100 has good picture quality.

[0057] In some embodiments, Figure 2 As shown, the first thickness D1 of the second optical structure 32 is smaller than the second thickness D2 of the first optical structure 31 .

[0058] It is worth noting that, since the second display panel 20 includes the light emitting chip 201, its overall thickness is relatively small. In addition, the first film layer structure (such as a cover plate) located on the light emitting side of the first display panel 10 usually has a large thickness. If the first thickness D1 of the second optical structure 32 is large, the thickness of the spliced ​​display device 100 will be large. Therefore, by setting the first thickness D1 of the second optical structure 32 to be smaller than the second thickness D2 of the first optical structure 31, it is helpful to reduce the thickness of the spliced ​​display device 100.

[0059] On the other hand, since the reflectivity R changes periodically with the value of nd / λ, the first thickness D1 of the second optical structure 32 can be controlled to take values ​​within the first variation cycle (i.e., the cycle in which nd / λ is 0-0.5), so that the first thickness D1 of the second optical structure 32 can be ensured to be relatively small, thereby further reducing the thickness of the spliced ​​display device 100. In addition, the second thickness D2 of the first optical structure 31 can take values ​​within the second and subsequent variation cycles, as long as the reflectivity corresponding to the first thickness D1 after taking the value is equal to the reflectivity corresponding to the second thickness D2 after taking the value, so that the reflectivity of the entire film layer structure located on the light-emitting side of the first display panel 10 and the reflectivity of the entire film layer structure located on the light-emitting side of the second display panel 20 can be ensured to be the same. Therefore, the second thickness D2 of the first optical structure 31 has a large number of value options, which can be determined according to its manufacturing needs or the adaptation needs relative to the second display panel 20.

[0060] In some embodiments, Figure 2 As shown, the top surface of the second optical structure 32 is located in the same plane as the top surface of the first optical structure 31. In other words, the surface of the second optical structure 32 away from the first display panel 10 is flush with the surface of the first optical structure 31 away from the second display panel 20. In this way, the smoothness of the surface of the light-emitting side of the spliced ​​display device 100 can be improved, thereby improving the viewing experience of the user.

[0061] In some examples, the second optical structure 32 and the first optical structure 31 can be integrally formed, so that the uniform transition of the surfaces of the second optical structure 32 and the first optical structure 31 can be ensured to further enhance the user's viewing experience. In addition, the integral formation of the second optical structure 32 and the first optical structure 31 can also ensure the structural stability of the two, so as to enhance the stability of the spliced ​​display device 100.

[0062] In some embodiments, Figure 2 As shown, a cover plate 51 is further provided between the first display panel 10 and the second optical structure 32, and the second optical structure 32 and the cover plate 51 are connected via a first adhesive layer. The cover plate 51 may be made of glass, and the first adhesive layer may include optical adhesive.

[0063] With this arrangement, the cover plate 51 can provide stable protection for the first display panel 10 , and the cover plate 51 and the second optical structure 32 are bonded together by the first adhesive layer, which helps to improve the stability of the second optical structure 32 .

[0064] In some examples, the cover plate 51 may be bonded to the second polarizer 62 via a second adhesive layer, thereby fixing the cover plate 51 .

[0065] In some embodiments, Figure 1 and Figure 2 As shown, the first display panel 10 includes a display portion 11 and a peripheral portion 12 located on at least one side of the display portion 11, and the peripheral portions 12 of the two first display panels 10 are spaced apart from each other to form a gap K. The display portion 11 can display images, and the peripheral portion 12 does not display images. As an example, the peripheral portion 12 is provided with a plastic frame, and the plastic frame can limit the liquid crystal molecule layer to the area corresponding to the display portion 11 to ensure the display of the image of the display portion 11. For example, the peripheral portion 12 can be located around the display portion 11.

[0066] In some examples, the second display panel 20 is disposed on the peripheral portion 12 and covers a portion of the display portion 11. This can avoid the appearance of dark shadows due to the narrow area where the second display panel 20 is disposed, and can also achieve a good display transition between the first display panel 10 and the second display panel 20.

[0067] In some examples, the second display panel 20 may be fixed on the second polarizer 62 via the third adhesive layer 42. In this way, the structural stability between the second display panel 20 and the first display panel 10 can be ensured.

[0068] Some embodiments of the present application also provide a display device, such as Figure 6 As shown, the display device 200 includes the spliced ​​display apparatus 100 described in any one of the above embodiments.

[0069] Since the display device 200 includes the spliced ​​display device 100 , the display device 200 has the technical effects of the spliced ​​display device 100 , which will not be described in detail here.

[0070] In some examples, the display device 200 further includes a mounting frame 202 , through which the spliced ​​display apparatus 100 can be fixed and installed to facilitate viewing and use of the display device 200 .

[0071] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A splicing display device, characterized in that: include: A plurality of first display panels, with a gap being provided between two adjacent first display panels; A second display panel is located at the gap, wherein the second display panel includes a plurality of light emitting chips; as well as The first optical structure is arranged on the light emitting side of the second display panel.

2. The splicing display device according to claim 1, characterized in that: The first optical structure includes a substrate and a first optical film layer located on the substrate, wherein the first optical film layer is arranged on a side of the substrate away from the second display panel; a plurality of particles are arranged in the first optical film layer, and an average diameter of the particles is greater than or equal to 3 μm and less than or equal to 5 μm.

3. The splicing display device according to claim 1, characterized in that: An adhesive layer is further provided between the second display panel and the first optical structure, and the adhesive layer includes a plurality of diffusion particles.

4. The splicing display device according to any one of claims 1 to 3, characterized in that: The spliced ​​display device also includes a second optical structure located on the first display panel.

5. The splicing display device according to claim 4, characterized in that: The second optical structure includes a substrate and a second optical film layer disposed on the substrate. A plurality of granules are disposed in the second optical film layer. The average diameter of the granules is the same as the average diameter of the particles.

6. The splicing display device according to claim 4, characterized in that: The thickness of the second optical structure is smaller than the thickness of the first optical structure.

7. The splicing display device according to claim 4, characterized in that: The top surface of the second optical structure and the top surface of the first optical structure are located in the same plane.

8. The splicing display device according to claim 4, characterized in that: A cover plate is further provided between the first display panel and the second optical structure, and the second optical structure is connected to the cover plate via an adhesive layer.

9. The splicing display device according to any one of claims 1 to 3, characterized in that: The first display panel includes a display portion and a peripheral portion located at one side of the display portion, and the second display panel is disposed on the peripheral portion and covers a portion of the display portion.

10. The splicing display device according to any one of claims 1 to 3, characterized in that: The first display panel is a liquid crystal display panel, and the light emitting chip is a light emitting diode chip.

11. A display device, characterized in that: It comprises the spliced ​​display device as described in any one of claims 1-10.

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