CN114973989B

CN114973989B - Spliced display panel and spliced display

Info

Publication number: CN114973989B
Application number: CN202210753662.0A
Authority: CN
Inventors: 李吉; 曾光; 郭家聪
Original assignee: TCL Huaxing Photoelectric Technology Co Ltd
Current assignee: TCL Huaxing Photoelectric Technology Co Ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2023-06-02
Anticipated expiration: 2042-06-28
Also published as: CN114973989A

Abstract

The embodiment of the application discloses a spliced display panel and a spliced display, wherein at least two liquid crystal panels are spliced and arranged, and a gap is formed between every two adjacent liquid crystal panels. The compensation panel is arranged on the light emergent side or the light incident side of the two adjacent liquid crystal panels and shields the gap. Therefore, the embodiment of the application adopts the visual angle enlarging film which is correspondingly arranged on the light emitting side of the liquid crystal panel and is correspondingly arranged on one side of the area where the compensation panel is positioned, so that the visual angle enlarging film is used for enlarging the visual angle of the liquid crystal panel; the final visual angle of the liquid crystal panel and the visual angle of the compensation panel tend to be consistent, and the side-view brightness also tends to be consistent, so that the risk of bright lines on the side of the compensation panel is reduced when the liquid crystal display panel is in side-view.

Description

Spliced display panel and spliced display

Technical Field

The application relates to the technical field of display, in particular to a spliced display panel and a spliced display.

Background

The liquid crystal display has the advantages of low energy consumption, large visual area, high resolution and the like, so that the liquid crystal display is widely applied to the fields of electronic products such as televisions, computers, mobile phones, flat panels, vehicle-mounted displays and the like. In order to further expand the size of the lcd, a plurality of small-sized lcds may be spliced together, but each lcd has a non-display area with a certain width, and the presence of these areas may cause a large splice to occur in the spliced display, which may greatly affect the viewing of the viewer.

Although the prior art can apply the light emitting diode (Light Emitting Diode, LED) display screen to the edge joint of the liquid crystal display, because the LED light source of the LED display belongs to a point light source, the visual angle is superior to that of the liquid crystal display, so that the conventional LED compensation spliced liquid crystal display has obvious uneven visual angle, namely the brightness of the LED display at the side view splice is obviously higher than that of the liquid crystal display, thereby forming bright stripes in the LED display area, and the problem of the bright stripes can seriously affect the appearance of users.

Disclosure of Invention

The embodiment of the application provides a spliced display panel and a spliced display, which can reduce the risk of bright stripes formed in a compensation panel area under a side view angle.

The embodiment of the application provides a tiled display panel, which comprises:

at least two liquid crystal panels are spliced, and a gap is formed between every two adjacent liquid crystal panels;

the compensation panel is arranged on the light emergent side or the light incident side of the two adjacent liquid crystal panels and shields the gap; the viewing angle of the compensation panel is larger than that of the liquid crystal panel;

at least two viewing angle enlarging films for enlarging a viewing angle of the liquid crystal panel; the viewing angle enlarging film is correspondingly arranged on the light emitting side of the liquid crystal panel and is correspondingly arranged on one side of the area where the compensation panel is located.

Optionally, in some embodiments of the present application, the viewing angle enlarging film includes a first film layer and a second film layer, the first film layer is disposed on the liquid crystal panel, the second film layer is disposed on the first film layer, and a refractive index of the first film layer is smaller than a refractive index of the second film layer;

the first film layer comprises a substrate and a plurality of microstructures arranged on the substrate, and the microstructures are used for enlarging the emergent angle of light rays; the second film layer covers the substrate and the microstructures.

Optionally, in some embodiments of the present application, in a vertical section of the viewing angle enlarging film, the microstructure is in the shape of an isosceles trapezoid; the shape of the microstructure comprises an upper edge, a lower edge and two side edges, wherein the upper edge and the lower edge are arranged oppositely, the length of the lower edge is longer than that of the upper edge, and the side edges are connected with the upper edge and the lower edge;

the included angle between the side edge and the lower edge is an included angle theta which is less than or equal to 70 degrees; the distance between two adjacent microstructures is L1, and L1 is more than or equal to 1 and less than or equal to 10 micrometers; the length of the lower edge is L2, and L2 is more than or equal to 5 micrometers and less than or equal to 20 micrometers; the height of the microstructure is H1, H1 is more than or equal to 4 micrometers and less than or equal to 16 micrometers.

Alternatively, in some embodiments of the present application, the thickness of the substrate is a thickness H2,1 micron.ltoreq.H2.ltoreq.10 microns; the thickness of the second film layer is H3, H3 is more than or equal to 7 micrometers and less than or equal to 25 micrometers; the first film layer has a first refractive index N1, and the second film layer has a second refractive index N2, wherein N2-N1 is more than or equal to 0.1.

Alternatively, in some embodiments of the present application, 1.4.ltoreq.N1.ltoreq. 1.8,1.5.ltoreq.N2.ltoreq.1.9.

Optionally, in some embodiments of the present application, the tiled display panel includes a first polarizer and a second polarizer, and the first polarizer is attached between the liquid crystal panel and the viewing angle expansion film; the second polaroid is arranged on the light incident side of the liquid crystal panel;

the spliced display panel is further provided with a first opening and a second opening, and the first opening and the second opening are correspondingly communicated with the gap;

in two adjacent liquid crystal panels, the first opening is arranged corresponding to the compensation panel and penetrates through the viewing angle enlarging film and the first polaroid; the second opening penetrates through the second polaroid; the compensation panel is disposed within the second opening.

Optionally, in some embodiments of the present application, the tiled display panel further includes a transparent filling layer, and the transparent filling layer is disposed in the first opening.

Optionally, in some embodiments of the present application, the tiled display panel further includes a cover plate, the cover plate is disposed on a side of the second polarizer away from the liquid crystal panel, the second opening penetrates through the cover plate, and a side of the cover plate away from the liquid crystal panel is flush with the compensation panel.

Optionally, in some embodiments of the present application, the liquid crystal panel includes a non-display region; the liquid crystal panel comprises a first substrate, a second substrate, a liquid crystal layer and frame glue, wherein the first substrate and the second substrate are oppositely arranged; the liquid crystal layer is arranged between the first substrate and the second substrate; the frame glue is arranged between the first substrate and the second substrate, is arranged on the periphery of the liquid crystal layer in a surrounding mode, and is positioned in the non-display area; the first polaroid is arranged on the first substrate, and the second polaroid is arranged on the second substrate;

the compensation panel is connected to the second substrate and corresponds to the frame glue; the compensation panel comprises a first substrate and a plurality of light emitting devices arranged on one side of the first substrate close to the frame glue;

the first substrate comprises a second substrate and a shading layer arranged on the second substrate, and orthographic projection of the shading layer on the plane where the light emitting devices are located is arranged on the periphery of each light emitting device.

Correspondingly, the embodiment of the application also provides a spliced display, which comprises a backlight module and the spliced display panel in any one of the embodiments, wherein the backlight module is arranged on the light incident side of the liquid crystal panel.

In the spliced display panel provided by the embodiment of the application, at least two liquid crystal panels are spliced, and a gap is formed between every two adjacent liquid crystal panels; the compensation panel is arranged on the light emergent side or the light incident side of the two adjacent liquid crystal panels and shields the gap; in the embodiment of the application, the visual angle expanding film is correspondingly arranged on the light emitting side of the liquid crystal panel and correspondingly arranged on one side of the area where the compensation panel is positioned, so that the visual angle expanding film is used for expanding the visual angle of the liquid crystal panel; the visual angles of the liquid crystal panel and the compensation panel tend to be consistent, and the side-view brightness also tends to be consistent, so that the risk of bright lines appearing at the side-view angle of the area where the compensation panel is located in side-view is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic top view of a tiled display panel according to an embodiment of the present disclosure;

fig. 2 is a schematic cross-sectional structure of a tiled display panel according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of an angle-enlarging film in a tiled display panel according to an embodiment of the present disclosure;

fig. 4 is a schematic perspective view of an angle-enlarging film in a tiled display panel according to an embodiment of the present disclosure;

FIG. 5 is a view angle versus brightness graph corresponding to each of the structures of Table 1;

fig. 6 is a schematic structural diagram of a tiled display according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.

The embodiment of the application provides a tiled display panel and a tiled display, and the tiled display panel and the tiled display are described in detail below. The following description of the embodiments is not intended to limit the preferred embodiments.

Referring to fig. 1 and 2, an embodiment of the present application provides a tiled display panel 100, which includes at least two liquid crystal panels 10, at least one compensation panel 20, and at least two viewing angle expansion films 30.

At least two liquid crystal panels 10 are spliced and arranged, and a gap fx is formed between every two adjacent liquid crystal panels 10. The compensation panel 20 is disposed at the light emitting side or the light entering side of the adjacent two liquid crystal panels 10, and shields the slit fx. The viewing angle of the compensation panel 20 is greater than that of the liquid crystal panel 10.

The viewing angle enlarging film 30 serves to enlarge the viewing angle of the liquid crystal panel 10. The viewing angle enlarging film 30 is disposed on the light emitting side of a liquid crystal panel 10, and is disposed on the side of the area of the compensation panel 20.

It should be understood that, in the prior art, since the viewing angle of the compensation panel is larger than that of the liquid crystal panel, the brightness of the compensation panel with the larger viewing angle is larger than that of the liquid crystal panel, so that bright lines appear at the side view angle of the compensation panel area;

therefore, in the embodiment of the present application, a viewing angle enlarging film 30 is correspondingly disposed on the light emitting side of a liquid crystal panel 10 and on the side of the area where the compensation panel 20 is located, so that the viewing angle enlarging film 30 is used for enlarging the viewing angle of the liquid crystal panel 10; so that the visual angles of the liquid crystal panel 10 and the compensation panel 20 tend to be consistent, and the side view brightness also tends to be consistent; thereby reducing the risk of bright lines in the area of the compensation panel 20 in side view.

The compensation panel 20 may be disposed on the light emitting side of two adjacent liquid crystal panels 10, or may be disposed on the light entering side of two adjacent liquid crystal panels 10.

Alternatively, the embodiment of the present application will be described taking an example in which the compensation panel 20 is disposed on the light incident side of two adjacent liquid crystal panels 10. Compared to the liquid crystal panel 10, since the brightness of the compensation panel 20 is larger, the compensation panel 20 is disposed at the light incident side, and the light emitted from the compensation panel 20 needs to pass through the non-display area of the liquid crystal panel 10, so that the light-emitting brightness of the compensation panel 20 can be weakened, and the light-emitting brightness of the compensation panel 20 is closer to the light-emitting brightness of the liquid crystal panel 10.

Alternatively, the liquid crystal panel 10 may be one of a conventional liquid crystal panel, a COA (Color Filter on Array) liquid crystal panel, and a BOA ((Black Matrix on Array) liquid crystal panel).

The compensation panel 20 may be one of a sub-millimeter-sized light emitting diode (Mini-LED) panel, a micro light emitting diode (micro-LED) panel, an Organic Light Emitting Diode (OLED) panel, and a quantum dot light emitting diode (QLED) panel.

Alternatively, referring to fig. 3 and 4, the viewing angle enlarging film 30 includes a first film layer 31 and a second film layer 32. The first film layer 31 is disposed on the liquid crystal panel 10. The second film layer 32 is disposed on the first film layer 31. The refractive index of the first film 31 is smaller than the refractive index of the second film 32.

The first film layer 31 includes a substrate 311 and a plurality of microstructures 312 disposed on the substrate 311. The microstructures 312 are used to expand the exit angle of the light. The second film layer 32 covers the substrate 311 and the microstructures 312.

It should be noted that, the refractive index of the first film layer 31 is set smaller than that of the second film layer 32, so that light emitted by the liquid crystal panel 10 is prevented from being reflected at the interface between the first film layer 31 and the second film layer 32, that is, the total reflection interface between the first film layer 31 and the second film layer 32 is prevented from being formed, and the brightness of the light is reduced.

In addition, when the light is emitted from the second film 32 into the air, the light is refracted and the emitting angle of the light is enlarged compared with the light emitted into the first film 31, so that the effect of enlarging the viewing angle is achieved. Moreover, when light is radiated to the microstructure 312, the light is also deflected by the light emission to expand the viewing angle.

Alternatively, the microstructure may be trapezoidal or semicircular in shape, or the like.

Alternatively, in a vertical section of the viewing angle enlarging film, the microstructures 312 have an isosceles trapezoid shape. The shape of the microstructure 312 includes an upper edge 31a, a lower edge 31b, and two side edges 31c. The upper edge 31a is disposed opposite the lower edge 31b. The length of the lower edge 31b is greater than the length of the upper edge 31 a. Side 31c is connected to upper 31a and lower 31b edges.

The light emitted from the liquid crystal panel 10 is radiated to the side 31c to be offset, so that the angle of the light is enlarged.

Optionally, the included angle between the side 31c and the lower 31b is θ, which is less than or equal to 70 degrees. The distance between two adjacent microstructures 312 is the distance L1, L1 is greater than or equal to 1 and less than or equal to 10 microns. The length of the lower edge 31b is the width L2, and L2 is more than or equal to 5 micrometers and less than or equal to 20 micrometers. The height of the microstructures 312 is the height H1, and H1 is 4 microns or less and 16 microns or less.

It is noted that, according to experiments, when the included angle θ exceeds 70 degrees, the probability of light entering the side 31c is small, which is disadvantageous for enlarging the light angle. The higher the height H1 of the trapezoid-shaped microstructure 312, the higher the probability of light incident on the side 31c, but the more difficult the process. The smaller the pitch L1, the higher the probability of light striking the side 31c, but the greater the process difficulty. In the case where the height H1 of the microstructure 312 and the angle θ of the microstructure 312 are determined, the larger the lower edge 31b, the larger the spacing between the side edges 31c, the thinner the density of the side edges 31c, and the lower the probability of light incident on the side edges 31c.

Thus, in the case where the microstructure 312 is trapezoidal, the synergistic effect of the above-described respective parameters results in the viewing angle enlarging film 30 excellent in viewing angle enlargement.

Please refer to the above table (table 1):

it should be explained that the half-luminance viewing angle refers to a viewing angle corresponding to one half of the luminance of the viewing angle having 0 degrees. In a circular configuration, the included angle θ is 90 degrees, and the microstructure 312 is semicircular; if the included angle θ is less than 90 degrees, the microstructure 312 is poorly circular. N1 is the refractive index of the first film layer 31; n2 is the refractive index of the second film layer 32.

As can be seen from a comparison of the trapezoid 1 and the circular 1, the θ of the trapezoid 1 is 69 degrees, the circular 1 is semicircular, and the half brightness viewing angle of the trapezoid 1 is far greater than the half brightness viewing angle of the circular 1 under the same conditions. That is, under the same conditions, when θ of the trapezoid structure is less than or equal to 70 degrees, the corresponding half-luminance viewing angle is greater than the half-luminance viewing angle corresponding to the semicircular microstructure.

Referring to fig. 5, in the side view of the trapezoid (1) and the circular (1), for example, 20-80 degrees, the brightness of the trapezoid (1) is larger than that of the circular (1). And as θ of the trapezoid structure decreases, the corresponding luminance thereof is larger. Therefore, compared with a round structure, the trapezoid structure has better visual angle and corresponding brightness.

Alternatively, the included angle θ may be 69 degrees, 60 degrees, 55 degrees, 45 degrees, 30 degrees, 15 degrees, or 5 degrees. The pitch L1 may be 1 micron, 2 microns, 4 microns, 5 microns, 6 microns, 8 microns, or 10 microns. The width L2 may be 5 microns, 8 microns, 10 microns, 15 microns, 20 microns. The height H1 may be 4 microns, 8 microns, 10 microns, 15 microns, or 16 microns.

Optionally, the thickness of the substrate 311 is H2, H2 is 1 micron or less and 10 microns or less; the thickness of the second film layer 32 is H3, H3 is more than or equal to 7 micrometers and less than or equal to 25 micrometers; the first film 31 has a first refractive index N1, and the second film 32 has a second refractive index N2, N2-N1 being greater than or equal to 0.1.

According to experiments, the smaller the thickness of the substrate 311 is, the higher the light transmittance is, but the microstructure 312 cannot be prepared if the substrate 311 is omitted due to the photolithography process, so that the light transmittance can be improved and the photolithography process can be satisfied by selecting "1 micrometer H2 is less than or equal to 10 micrometers" in combination with the photolithography process.

The thickness H3 of the second film layer 32 is too small to fill the depressions between the microstructures 312 of the first film layer 31; if too thick, the transmittance of light is weakened; therefore, the light transmittance can be improved and the process can be satisfied by selecting H3 with the wavelength of 7 microns or more and H3 with the wavelength of 25 microns or less.

In addition, the difference between the refractive index N1 of the first film 31 and the refractive index N2 of the second film 32 affects the final exit angle of the light. As can be seen from table 1, the larger N2, the smaller the half brightness viewing angle, while the other conditions are unchanged.

Optionally, N1 is more than or equal to 1.4 and less than or equal to 1.8,1.5, and N2 is more than or equal to 1.9. For example, N1 may be 1.4, 1.5, 1.6, 1.7 or 1.8. N1 may be 1.5, 1.6, 1.7, 1.8 or 1.9.

H2 may be 1 micron, 3 microns, 5 microns, 7 microns, or 10 microns. H3 may be 7 microns, 9 microns, 13 microns, 15 microns, 17 microns, 18 microns, 20 microns, or 25 microns.

Alternatively, the viewing angle enlarging film 30 may be manufactured by photolithography: coating a layer of transparent photoresist material with low refractive index on a glass substrate, and then manufacturing a raised microstructure 312 through a yellow light process to form a first film layer 31; coating a photo-curing high refractive index resin layer on the low refractive index photoresist layer, forming a second film layer 32 after photo-curing, and removing the two transparent film layers from the glass substrate; the low refractive index photoresist layer is then attached to the first polarizer 41 by a pressure sensitive adhesive. This completes the process of preparing and attaching the viewing angle enlarging film 30.

Alternatively, referring to fig. 2, the tiled display panel 100 includes a first polarizer 41 and a second polarizer 42. The first polarizer 41 is attached between the liquid crystal panel 10 and the viewing angle enlarging film 30. The second polarizer 42 is disposed on the light incident side of the liquid crystal panel 10.

The tiled display panel 100 is further provided with a first opening 10a and a second opening 10c. The first opening 10a and the second opening 10c each correspond to the communication slit fx.

In the adjacent two liquid crystal panels 10, the first opening 10a is provided corresponding to the compensation panel 20 and penetrates the viewing angle enlarging film 30 and the first polarizer 41. The second opening 10c penetrates the second polarizer 42. The compensation panel 20 is disposed within the second opening 10c.

The compensation panel 20 is disposed in the second opening 10c to improve flatness. The first opening 10a is used to penetrate the viewing angle enlarging film 30 and the first polarizer 41, and corresponds to the compensation panel 20, so as to avoid influencing the light emitting angle and the light emitting brightness of the compensation panel 20.

Optionally, the tiled display panel 100 further includes a transparent filling layer 50, and the transparent filling layer 50 is disposed in the first opening 10 a. Such an arrangement improves the flatness of the tiled display panel 100.

Optionally, the tiled display panel 100 further includes a cover plate 60, and the cover plate 60 is disposed on a side of the second polarizer 42 away from the liquid crystal panel 10. The second opening 10c penetrates the cover plate 60. The cover plate 60 is flush with the compensation panel 20 on a side away from the liquid crystal panel 10 to improve flatness of the tiled display panel 100.

Alternatively, the liquid crystal panel 10 includes a non-display area NA. The liquid crystal panel 10 includes a first substrate 11, a second substrate 12, a liquid crystal layer 13, and a frame adhesive 14. The first substrate 11 and the second substrate 12 are disposed opposite to each other. The liquid crystal layer 13 is disposed between the first substrate 11 and the second substrate 12. The sealant 14 is disposed between the first substrate 11 and the second substrate 12, and is disposed around the liquid crystal layer 13 and located in the non-display area NA.

The first polarizer 41 is disposed on the first substrate 11. The second polarizer 42 is disposed on the second substrate 12.

The compensation panel 20 is connected to the second substrate 12 and corresponds to the sealant 14. The compensation panel 20 includes a first substrate 21 and a plurality of light emitting devices 22 disposed on a side of the first substrate 21 adjacent to the frame glue 14.

The first substrate 11 includes a second substrate 111 and a light shielding layer 112 provided on the second substrate 111. The periphery of each light emitting device 22 is correspondingly provided with a front projection of the light shielding layer 112 on the plane of the light emitting device 22. Such an arrangement serves to prevent the light emitting device 22 from mixing light.

Optionally, the frame glue 14 is a glue material with high light transmittance.

Referring to fig. 6, correspondingly, an embodiment of a tiled display 1000 is further provided, which includes a backlight module 200 and the tiled display panel 100 according to any of the above embodiments. The backlight module 200 is disposed on the light incident side of the liquid crystal panel 10.

In the tiled display 1000 of the embodiment of the present application, at least two liquid crystal panels 10 are tiled, and a gap fx is formed between two adjacent liquid crystal panels 10. The compensation panel 20 is disposed at the light emitting side or the light entering side of the adjacent two liquid crystal panels 10, and shields the slit fx. Because the visual angle of the compensation panel is larger than that of the liquid crystal panel in the prior art, the brightness of the larger visual angle of the compensation panel is larger than that of the liquid crystal panel, and bright lines appear in the side view angle of the compensation panel;

therefore, in the embodiment of the present application, a viewing angle enlarging film 30 is correspondingly disposed on the light emitting side of a liquid crystal panel 10 and on the side of the area where the compensation panel 20 is located, so that the viewing angle enlarging film 30 is used for enlarging the viewing angle of the liquid crystal panel 10; so that the final viewing angle of the liquid crystal panel 10 and the viewing angle of the compensation panel 20 tend to be consistent, and the side-viewing brightness also tends to be consistent, thereby reducing the risk of bright lines on the side of the compensation panel 20 in side-viewing.

The foregoing has described in detail a tiled display panel and a tiled display provided in embodiments of the present application, and specific examples have been applied herein to illustrate the principles and implementations of the present application, where the foregoing examples are provided to assist in understanding the methods of the present application and their core ideas; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.

Claims

1. A tiled display panel, comprising:

at least two viewing angle enlarging films for enlarging a viewing angle of the liquid crystal panel; the visual angle enlarging film is correspondingly arranged on the light emitting side of the liquid crystal panel and is correspondingly arranged on one side of the area where the compensation panel is positioned;

the viewing angle enlarging film comprises a first film layer and a second film layer, the first film layer is arranged on the liquid crystal panel, the second film layer is arranged on the first film layer, and the refractive index of the first film layer is smaller than that of the second film layer;

the first film layer comprises a substrate and a plurality of microstructures arranged on the substrate, and the microstructures are used for enlarging the emergent angle of light rays; the second film layer covers the substrate and the microstructure;

in a vertical section of the viewing angle enlarging film, the microstructure is in the shape of an isosceles trapezoid; the shape of the microstructure comprises an upper edge, a lower edge and two side edges, wherein the upper edge and the lower edge are arranged oppositely, the length of the lower edge is longer than that of the upper edge, and the side edges are connected with the upper edge and the lower edge;

2. The tiled display panel of claim 1, wherein the thickness of the substrate is thickness H2,1 micron ∈h2 ∈10 microns; the thickness of the second film layer is H3, H3 is more than or equal to 7 micrometers and less than or equal to 25 micrometers; the first film layer has a first refractive index N1, and the second film layer has a second refractive index N2, wherein N2-N1 is more than or equal to 0.1.

3. The tiled display panel according to claim 2, wherein 1.4N 1N 1.8,1.5N 2N 1.9.

4. The tiled display panel according to claim 1, wherein the tiled display panel includes a first polarizer and a second polarizer, the first polarizer being attached between the liquid crystal panel and the viewing angle expanding film; the second polaroid is arranged on the light incident side of the liquid crystal panel;

5. The tiled display panel of claim 4, further comprising a transparent filler layer disposed within the first opening.

6. The tiled display panel according to claim 4, further comprising a cover plate, wherein the cover plate is disposed on a side of the second polarizer away from the liquid crystal panel, the second opening penetrates the cover plate, and a side of the cover plate away from the liquid crystal panel is flush with the compensation panel.

7. The tiled display panel according to any of claims 4-6, wherein the liquid crystal panel comprises a non-display area; the liquid crystal panel comprises a first substrate, a second substrate, a liquid crystal layer and frame glue, wherein the first substrate and the second substrate are oppositely arranged; the liquid crystal layer is arranged between the first substrate and the second substrate; the frame glue is arranged between the first substrate and the second substrate, is arranged on the periphery of the liquid crystal layer in a surrounding mode, and is positioned in the non-display area; the first polaroid is arranged on the first substrate, and the second polaroid is arranged on the second substrate;

8. The tiled display panel according to claim 7, wherein the frame glue is a transparent material.

9. A tiled display, characterized by comprising a backlight module and the tiled display panel according to any one of claims 1-8, wherein the backlight module is arranged on the light entrance side of the liquid crystal panel.