Splicing display unit and display screen

Abstract

The present invention provides a splicing display unit and a display screen, which visually eliminates seams, improves the user's visual effect of splicing, and achieves the user's subjective feeling of visually no seams. The display screen includes a number of closely arranged display modules and a number of optical structures, each display module includes a display area and a black border area surrounding the display area, the black border areas of two adjacent display modules are spliced ​​together to form a seam, and the end of the first surface of the optical structure close to the seam is a first arc surface, which is used to refract the light emitted from the display area of ​​the display module and distribute it to the normal viewing area corresponding to the seam.

Description

[Technical Field]

[0001] The present invention relates to the technical field of displays, in particular to splicing display units and display screens. [Background technology]

[0002] As market and user needs grow, splicing screens continue to pursue extremely narrow bezels to achieve a better visual experience. However, due to the technical limitations of the LCD sealing structure, black matrix at the edge, and the sealing area, it is not possible to completely eliminate the black bezel at the screen edge. When splicing, there is an obvious black bezel, or seam, as shown in area B in Figure 1, which seriously affects the visual experience of users viewing the displayed image.

[0003] Therefore, how to improve the user's visual effect and achieve the user's subjective sense of visually no seams is a technical challenge that needs to be urgently solved in this field. Summary of the Invention

[0004] The present invention provides a splicing display unit and a display screen, which can visually eliminate the seam, improve the user's visual effect of splicing, and achieve the user's subjective feeling of visually no seam. [Means for solving the problem]

[0005] According to a first aspect of an embodiment of the present invention, there is provided a display screen, the display screen including a plurality of closely arranged display modules and a plurality of optical structures, each optical structure being provided corresponding to a display module and disposed on a light-emitting surface side of the display module, two adjacent display modules being closely arranged, and the optical structures on two adjacent display modules being closely arranged,

[0006] Each of the display modules includes a display area and a black border area surrounding the display area, and the black border areas of two adjacent display modules are spliced together to form a seam;

[0007] Each of the optical structures includes a first surface and a second surface facing each other, and the second surface of the optical structure is in close contact with the display module;

[0008] The end of the first surface of the optical structure closest to the seam is a first arcuate surface, which is used to refract light emitted from the display area of the display module and distribute it to a normal viewing area corresponding to the seam.

[0009] Optionally, the first arcuate surface is a convex arcuate surface structure.

[0010] Optionally, the size of the orthogonal projection of the first arc surface on the display module along the width direction of the seam is equal to or larger than the width of the seam and is equal to or smaller than the width of the seam plus 5 mm, and the width of the seam is 0.88 mm to 3.9 mm; and / or

[0011] the first arcuate surface has a first end close to the display module and a second end away from the display module, and the distance from the horizontal plane on which the first end of the first arcuate surface is located to the horizontal plane on which the second end of the first arcuate surface is located is equal to or less than half the thickness of the optical structure; and / or

[0012] The radius of the first arcuate surface is equal to or greater than the width of the seam and equal to or less than the width of the seam plus 5 mm, and the width of the seam is between 0.88 mm and 3.9 mm; and / or

[0013] The radius of the first arcuate surface is 2 mm to 5 mm, and / or

[0014] The optical structure has a thickness of 3 mm to 10 mm.

[0015] Optionally, the end of the second surface of the optical structure close to the seam is a second arcuate surface, and light emitted from the display area of the display module is reflected by the second arcuate surface to supplement the light rays in the non-normal viewing area corresponding to the seam.

[0016] Optionally, the second arcuate surface is a concave arcuate surface structure.

[0017] Optionally, the second arcuate surface includes a third end close to the display module and a fourth end away from the display module, and the distance from the horizontal plane on which the fourth end is located to the horizontal plane on which the third end is located is equal to or greater than half the width of the seam and is equal to or less than the thickness of the optical structure minus 1 mm; and / or

[0018] a distance between an end of the first arcuate surface close to the second surface and an end of the second arcuate surface close to the first surface is 0.3 mm or more and 1 mm or less; and / or

[0019] The radius of the second arcuate surface is 2 mm to 8 mm.

[0020] According to a second aspect of the present invention, there is provided a splicing display unit, the splicing display unit including a display module and an optical structure stacked together, the optical structure being disposed on a light-emitting surface side of the display module;

[0021] the display module includes a display area and a black border area surrounding the display area;

[0022] Each of the optical structures includes a first surface and a second surface facing each other, and the second surface of the optical structure is in close contact with the display module;

[0023] The end of the first surface of the optical structure closest to the black border area of the display module is a first arcuate surface, which is used to refract light emitted from the display area of the display module and distribute it to a normal viewing area corresponding to the black border area.

[0024] Optionally, the first arcuate surface is a convex arcuate surface structure.

[0025] Optionally, the size of the first arcuate surface along the width direction of the black border area in the orthogonal projection on the display module is at least twice the width of the black border area and is not more than twice the width of the black border area plus 5 mm, and the width of the black border area is 0.44 mm to 1.95 mm; and / or

[0026] the first arcuate surface has a first end close to the display module and a second end away from the display module, and the distance from the horizontal plane on which the first end of the first arcuate surface is located to the horizontal plane on which the second end of the first arcuate surface is located is equal to or less than half the thickness of the optical structure; and / or

[0027] The radius of the first arcuate surface is at least twice the width of the black border area and is not more than twice the width of the black border area plus 5 mm, and the width of the black border area is 0.44 mm to 1.95 mm; and / or

[0028] The radius of the first arcuate surface is 2 mm to 5 mm, and / or

[0029] The optical structure has a thickness of 3 mm to 10 mm.

[0030] Optionally, the end of the second surface of the optical structure close to the black border area of the display module is a second arcuate surface, and light emitted from the display area of the display module is reflected by the second arcuate surface to supplement the light rays of the non-normal viewing area corresponding to the black border area.

[0031] Optionally, the second arcuate surface is a concave arcuate surface structure.

[0032] Optionally, the second arcuate surface includes a third end close to the display module and a fourth end away from the display module, and the distance from the horizontal plane on which the fourth end is located to the horizontal plane on which the third end is located is equal to or greater than the width of the black border area and is equal to or less than the thickness of the optical structure minus 1 mm, and the width of the black border area is 0.44 mm to 1.95 mm; and / or

[0033] a distance between an end of the first arcuate surface close to the second surface and an end of the second arcuate surface close to the first surface is 0.3 mm or more and 1 mm or less; and / or

[0034] The radius of the second arcuate surface is 2 mm to 8 mm.

[0035] The display screen of the present invention has an overall structure and a first arc surface in the optical structure, which can refract the light emitted from the display area of the display module and distribute it to the normal viewing area corresponding to the seam, thereby visually eliminating the seam, improving the user's visual effect on splicing, and achieving the user's subjective feeling that there is no visual seam.

[0036] The splicing display unit of the present invention has an overall structure and a first arc surface in the optical structure, which can refract the light emitted from the display area of the display module and distribute it to the normal viewing area corresponding to the black border area, thereby visually eliminating the black border area, improving the user's visual effect on splicing, and achieving the user's subjective feeling that there is no black border area visually. [Brief explanation of the drawings]

[0037] [Figure 1] FIG. 1 is a simulated luminance distribution diagram of a prior art display screen under normal viewing conditions. [Figure 2] 1 is a schematic diagram of a partial cross-sectional structure of a display screen according to a first embodiment of the present invention. [Figure 3] 2 is a schematic diagram of the optical path emitted by the display module of the display screen according to the first embodiment of the present invention; FIG. [Figure 4] 1 is a partial cross-sectional structural schematic diagram of the optical structure of a display screen according to Example 1 of the present invention; [Figure 5] FIG. 2 is a simulated luminance distribution diagram of the display screen according to the first embodiment of the present invention when viewed from the front. [Figure 6] FIG. 10 is a partial cross-sectional structural schematic diagram of a display screen according to a second embodiment of the present invention. [Figure 7] FIG. 6 is a schematic diagram of the optical path emitted by the display module of the display screen according to the second embodiment of the present invention; [Figure 8] FIG. 6 is a partial cross-sectional structural schematic diagram of the optical structure of a display screen according to Example 2 of the present invention. [Figure 9] FIG. 10 is a simulated luminance distribution diagram of a display screen according to Example 2 of the present invention when viewed from the front. [Figure 10] FIG. 2 is a 45-degree optical path diagram of the optical structure of the display screen according to the first embodiment of the present invention. [Figure 11] FIG. 10 is a structural schematic diagram of the optical structure of another embodiment of the display screen of the present invention; [Figure 12] FIG. 10 is a simulated luminance distribution diagram of the optical structure of another embodiment of the display screen of the present invention under normal viewing conditions. [Figure 13] FIG. 10 is a 45-degree ray diagram of the optical structure of another embodiment of the display screen of the present invention. [Figure 14] FIG. 10 is a structural schematic diagram of the optical structure of yet another embodiment of the display screen of the present invention. [Figure 15] FIG. 10 is a simulated luminance distribution diagram of the optical structure of yet another embodiment of the display screen of the present invention under normal viewing conditions. [Figure 16] FIG. 10 is a 45-degree ray diagram of the optical structure of yet another embodiment of the display screen of the present invention. [Figure 17] FIG. 10 is a 45-degree optical path diagram of the optical structure of a display screen according to a second embodiment of the present invention. [Figure 18] FIG. 10 is a schematic cross-sectional view of a splicing display unit according to a third embodiment of the present invention. [Figure 19]FIG. 10 is a schematic cross-sectional view of a splicing display unit according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0038] Reference will now be made in detail to illustrative embodiments, examples of which are illustrated in the drawings. When the following description refers to the drawings, like numerals in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following illustrative examples do not represent all embodiments consistent with the present invention. To the contrary, they are merely examples of apparatus consistent with certain aspects of the present invention, as detailed in the appended claims.

[0039] The terms used in the present invention are merely for the purpose of describing specific embodiments and are not intended to limit the present invention. Unless otherwise defined, technical or scientific terms used in the present invention should have the ordinary meaning understood by those skilled in the art. Similar terms such as "a" or "one" used in the present specification and claims also mean the presence of at least one, without limiting the quantity. Similar terms such as "comprise" or "including" mean that the elements or components listed before "comprise" or "include" cover the elements or components listed after "comprise" or "include" and their equivalents, but do not exclude other elements or components. Similar terms such as "connect" or "coupled" are not limited to physical or mechanical connections and may include electrical connections, whether direct or indirect. "Plurality" includes two and corresponds to at least two. As used in the present specification and the appended claims, the singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly dictates otherwise. As will be understood, the term "and / or" as used herein refers to or includes any or all possible combinations of one or more of the associated listed items.

[0040] Example 1

[0041] 2 to 4, this embodiment provides a display screen 1. The display screen 1 includes a plurality of closely arranged display modules 10 and a plurality of optical structures 20, each optical structure 20 corresponding to one display module 10 and disposed on the light-emitting surface side of the display module 10, two adjacent display modules 10 being disposed in close contact with each other, and the optical structures 20 on two adjacent display modules 10 being disposed in close contact with each other.

[0042] Each display module 10 includes a display area 11 and a black border area 12 surrounding the display area 11, i.e., the display area 11 is located at the center of the display module, and the black border area 12 is located at the edge of the display module by surrounding the display area 11. The black border areas 12 of two adjacent display modules 10 are spliced together to form a seam 30.

[0043] Each optical structure 20 includes a first surface 21 and a second surface 22 facing each other, and the second surface 22 of the optical structure 20 is in close contact with the display module 10 .

[0044] The end of the first surface 21 of the optical structure 20 closest to the seam 30 is a first arcuate surface 23, which is used to refract light emitted from the display area 11 of the display module 10 and distribute it to the normal viewing area corresponding to the seam 30. As shown in Figure 3, the direction of the arrow in the figure is the propagation direction of the light emitted from the display area 11 of the display module 10, and the hatching in the figure has been removed to better show the propagation direction of the light emitted from the display area 11 of the display module 10.

[0045] As described, the normal viewing area corresponding to the seam 30 refers to the area where the seam 30 would be observed in the absence of an optical structure when a user views the display module 10 at a normal viewing angle (i.e., an angle perpendicular to the display module 10).

[0046] In this way, by providing the overall structure and providing the first arc surface 23 on the optical structure 20, the light emitted from the display area 11 of the display module 10 can be refracted and distributed to the normal viewing area corresponding to the seam 30, visually eliminating the seam 30, improving the user's visual effect of the splicing, and achieving the user's subjective feeling that there is no visual seam 30. Specifically, by refracting the light rays through the first arc surface 23 of the optical structure 20, the display area 11 of the display module 10 is "magnified" onto the imaging plane, achieving the visual effect of eliminating the physical seam 30 on the display screen 1.

[0047] Furthermore, the first arc surface 23 has a convex arc surface structure. The convex arc surface structure means that the arc surface protrudes in a direction away from the center of the optical structure. The end face of the first arc surface 23 is located within the edge of the optical structure 20.

[0048] That is, the first arcuate surface 23 extends from the plane where the first surface 21 is located toward the display module 10, forming a convex arcuate surface structure, thereby forming a structure similar to a convex lens, which refracts light emitted from the display area 11 of the display module 10 and distributes the refracted light to the normal viewing area corresponding to the seam 30. Furthermore, by defining the parameters of the convex lens structure, the light path can be deflected at a certain angle from the incident light direction to achieve the effect of enlarging the image, thereby eliminating the seam 30 and improving the user experience.

[0049] In addition, compared with the prior art optical structures formed by stacking multiple sets of prism structures, and the technical solution of providing multiple sets of prism structures to translate the image into the seam area, the optical structure 20 of the display screen 1 of this embodiment has an image enlargement effect, is compatible with N*N splicing, and is a single structure, which avoids the change in screen effect caused by the assembly offset of multiple structures.

[0050] 3, hatching has been removed to better illustrate the installation status of the first arcuate surface 23 of the optical structure 20. The size L2 of the first arcuate surface 23 along the width direction of the seam 30 when orthogonally projected on the display module 10 is equal to or greater than the width W of the seam 30 and equal to or less than the width W of the seam 30 plus 5 mm, with the width W of the seam 30 being 0.88 mm to 3.9 mm. By setting the size L2 of the first arcuate surface 23 along the width direction of the seam 30 when orthogonally projected on the display module 10 to be equal to or greater than the width W of the seam 30, the seam 30 is shielded, but if L2 is too large, the refraction effect is reduced.

[0051] The first arcuate surface 23 includes a first end 231 closer to the display module 10 and a second end 232 further away from the display module 10. The distance D3 from the horizontal plane where the first end 231 of the first arcuate surface 23 is located to the horizontal plane where the second end 232 of the first arcuate surface 23 is located is less than half the thickness D1 of the optical structure 20. Within this range, the greater the value of the distance D3 from the horizontal plane where the first end 231 of the first arcuate surface 23 is located to the horizontal plane where the second end 232 of the first arcuate surface 23 is located, the higher the refractive effect and the emmetropia effect. However, the thickness of the optical structure increases, which increases the weight and material costs. Therefore, the design must be comprehensively considered. Preferably, the distance D3 from the horizontal plane where the first end 231 of the first arcuate surface 23 is located to the horizontal plane where the second end 232 of the first arcuate surface 23 is located is 2 mm to 4 mm.

[0052] The radius R1 of the first arcuate surface 23 is equal to or greater than the width W of the seam 30 and is equal to or less than the sum of the width W of the seam 30 and 5 mm. Preferably, the radius R1 of the first arcuate surface 23 is 2 mm to 5 mm.

[0053] The arc length L1 of the first arc surface 23 is jointly determined by the size L2 of the seam 30 of the first arc surface 23 in the width direction when orthogonally projected on the display module 10, the distance D3 from the horizontal plane on which the first end 231 of the first arc surface 23 is located to the horizontal plane on which the second end 232 of the first arc surface 23 is located, and the radius R1 of the first arc surface 23. The longer the arc length L1 of the first arc surface 23, the longer the seam length that can be covered, so the seam length needs to be designed taking into account the overall arc length.

[0054] In this embodiment, the thickness D1 of the optical structure 20 is 3 mm to 10 mm. The material of the optical structure 20 is glass, PMMA (polymethyl methacrylate), PC (polycarbonate), etc. The optical structure 20 is fixed to the display module 10 via an optical adhesive layer 40.

[0055] The second surface 22 of the optical structure 20 in this embodiment is a generally flat plane.

[0056] The simulated luminance distribution map of the display screen 1 of this embodiment under normal viewing conditions is shown in FIG. 5. As can be seen from FIG. 5, at normal viewing angles, the user cannot substantially observe the seam 30 under normal viewing angles, thereby visually eliminating the seam 30 and improving the user's visual effect on splicing, and achieving the user's subjective feeling that there is no seam 30 visually.

[0057] Example 2

[0058] As shown in Figures 6 to 9, the overall structure of the display screen of this embodiment is substantially the same as that of Example 1, except that the end of the second surface 22 of the optical structure 20 closest to the seam 30 is a second arcuate surface 24, and the light emitted from the display area 11 of the display module 10 is reflected by the second arcuate surface 24 to supplement the light rays in the non-normal viewing area corresponding to the seam 30.

[0059] As described, the non-normal viewing area corresponding to the seam 30 refers to the area where the seam 30 would be observed in the absence of the optical structure when a user views the display module 10 at a non-normal viewing angle (i.e., an angle that is not perpendicular to the display module 10, i.e., an oblique or wide viewing angle).

[0060] In this way, by providing the second arc surface 24, the light emitted from the display area 11 of the display module 10 can be reflected, and the light rays can be emitted through the first surface 21 of the optical structure, thereby replenishing the light rays in the non-normal viewing area corresponding to the seam 30, visually eliminating the seam 30 even in the non-normal viewing area corresponding to the seam 30, further improving the user's visual effect of splicing, and achieving the user's subjective feeling that there is no visual seam 30.

[0061] Furthermore, the second arcuate surface 24 has a concave arcuate structure. The concave arcuate structure means that the arcuate surface is concave toward the center of the optical structure.

[0062] Specifically, in order to cover the length of the seam from an oblique angle, the size L4 along the width direction of the seam 30 in the orthogonal projection on the display module 10 of the second arc surface 24 is greater than half the width W of the seam 30 and less than half the width W of the seam 30 plus 0.5 mm.

[0063] The second arcuate surface 24 includes a third end 241 that is closer to the display module 10 and a fourth end 242 that is farther away from the display module 10 .

[0064] The distance D2 from the horizontal plane where the fourth end 242 is located to the horizontal plane where the third end 241 is located is at least half the width W of the seam 30 plus 0.5 mm. The larger the value of D2, the better the display effect of the oblique angle, but the thickness of the optical structure will be greater, which will increase the weight and material costs. Therefore, the design must take into consideration the oblique angle and the thickness of the model comprehensively. Generally, the distance D2 from the horizontal plane where the fourth end 242 is located to the horizontal plane where the third end 241 is located is set to be at least half the width W of the seam 30 and no more than the thickness of the optical structure minus 1 mm.

[0065] The distance D4 between the end of the first arcuate surface 23 closest to the second surface 22 (the first end 231 of the first arcuate surface 23) and the end of the second arcuate surface 24 closest to the first surface 21 (the fourth end 242 of the second arcuate surface 24) is greater than 0. Preferably, the distance D4 between the first end 231 of the first arcuate surface 23 and the fourth end 242 of the second arcuate surface 24 is greater than or equal to 0.3 mm and less than or equal to 1 mm, thereby avoiding sharp corners that may cause damage during assembly and operation and facilitating material processing. As described above, when the side edge 25 connected between the first surface 21 and the second surface 22 is perpendicular to the display module 10, the length of the side edge 25 is the distance D4 between the first end 231 of the first arcuate surface 23 and the fourth end 242 of the second arcuate surface 24.

[0066] The radius R2 of the second arcuate surface 24 is 2mm to 8mm. The smaller the radius R2 of the second arcuate surface 24, the better the display effect at oblique angles but the worse the display effect at normal angles, and vice versa. Therefore, the design must balance the display effects at normal and oblique angles, and the optimal effect is achieved when the radius R2 of the second arcuate surface 24 is 2mm to 8mm. The arc length L3 of the second arcuate surface 24 is jointly determined by the size L4 of the second arcuate surface 24 along the width direction of the seam 30 of the orthogonal projection of the display module 10, the distance D2 from the horizontal plane where the fourth end 242 is located to the horizontal plane where the third end 241 is located, and the radius R2 of the second arcuate surface 24.

[0067] In this embodiment, the end of the second surface 22 of the optical structure 20 close to the seam 30 has a concave arc surface structure, and a simulated brightness distribution map of the display screen 1 of this embodiment under normal viewing conditions is shown in FIG. 9. As can be seen from FIG. 9, at normal viewing angles, the user cannot substantially observe the seam 30, thereby visually eliminating the seam 30 and improving the user's visual effect on splicing, and achieving the user's subjective feeling that there is no seam 30 visually.

[0068] As will be explained, the edge of the second surface 22 near the seam 30 may have other configurations, which will have different effects on the light path at oblique angles.

[0069] In the optical structure 20 of Example 1, when the second surface 22 is a generally flat plane, the user cannot substantially observe the seam 30 at a normal viewing angle, as shown in Fig. 5. However, as shown in Fig. 10, when the user views the display module 10 at a 45-degree oblique viewing angle, the user can observe part of the structure of the seam 30, i.e., part O in the figure. That is, the optical structure 20 of Example 1 can visually eliminate the seam 30 when viewed at a normal viewing angle by using the first arcuate surface 23, but cannot eliminate the seam 30 when viewed at an oblique or wide viewing angle.

[0070] Similarly, in another embodiment, when the end of the second surface 22 of the optical structure 20 closest to the seam 30 is positioned at a plane that forms a certain included angle with the plane on which the display module 10 is positioned, as shown in Fig. 11, the user cannot substantially observe the seam 30 at a normal viewing angle, as shown in Fig. 12. However, when the user views the display module 10 at a 45-degree oblique angle, as shown in Fig. 13, the user can observe part of the structure of the seam 30, i.e., part P in the figure. That is, when the end of the second surface 22 closest to the seam 30 is positioned at a plane that forms a certain included angle with the plane on which the display module 10 is positioned, only a portion of the light can exit the optical structure 20, thereby improving the appearance of the seam 30 when viewed at an oblique or wide viewing angle. This generally results in an improvement effect.

[0071] In yet another embodiment, when the end of the second surface 22 of the optical structure 20 closest to the seam 30 has a convex arcuate structure as shown in Fig. 14, the user cannot substantially observe the seam 30 at a normal viewing angle as shown in Fig. 15. However, when the user views the display module 10 at a 45-degree oblique viewing angle as shown in Fig. 16, the user can observe part of the structure of the seam 30, i.e., part Q in the figure. That is, when the end of the second surface 22 closest to the seam 30 is configured as a convex arcuate structure, only a small portion of the light can exit the optical structure 20, thereby improving the appearance of the seam 30 when viewed at an oblique or wide viewing angle. Therefore, the improvement effect is low.

[0072] Only under the condition that the end of the second surface 22 of the optical structure 20 of this Example 2 close to the seam 30 has a concave arc structure, not only can a user not substantially observe the seam 30 at a normal viewing angle (see FIG. 9 ), but also when the user views the display module 10 at a 45-degree oblique viewing angle (as shown in FIG. 17 ), the seam 30 cannot be completely observed. That is, when the end of the second surface 22 close to the seam 30 is installed as a concave arc structure, all light rays can exit the optical structure 20, thereby improving the seam 30 at wide viewing angles, and the improvement effect is good.

[0073] Based on the above reasoning, the optimal optical structure 20 can simultaneously eliminate the seam problem at both normal and wide viewing angles when the end of the first surface 21 closest to the seam 30 is a convex arc surface structure and the end of the second surface 22 closest to the seam 30 is a concave arc surface structure.

[0074] Example 3

[0075] As shown in Figure 18, this embodiment provides a splicing display unit 2. A plurality of splicing display units 2 are closely arranged to form the display screen of embodiment 1. That is, the splicing display unit 2 of this embodiment is the smallest splicing unit of the display screen of embodiment 1.

[0076] The splicing display unit 2 includes a display module 10 and an optical structure 20 that are stacked together, and the optical structure 20 is disposed on the light-emitting surface side of the display module 10. The structure of the optical structure 20 in this embodiment may be seen in FIG.

[0077] The display module 10 includes a display area 11 and a black border area 12 surrounding the display area 11, i.e., the display area 11 is located at the center of the display module 10, and the black border area 12 is located at the edge of the display module 10 by surrounding the display area 11. When multiple splicing display units 2 are closely arranged, the black border areas 12 of two adjacent display modules 10 are spliced together to form the seam 30 of the display screen of Example 1.

[0078] Each optical structure 20 includes a first surface 21 and a second surface 22 facing each other, and the second surface 22 of the optical structure 20 is in close contact with the display module 10 .

[0079] The end of the first surface 21 of the optical structure 20 closest to the black border area 12 of the display module 10 is a first arcuate surface 23, which is used to refract light emitted from the display area 11 of the display module 10 and distribute it to the normal viewing area corresponding to the black border area 12.

[0080] As described, the normal viewing area corresponding to the black border area 12 refers to the area where the black border area 12 would be observed in the absence of an optical structure when a user views the display module 10 at a normal viewing angle (i.e., an angle perpendicular to the display module 10).

[0081] In this way, by providing the overall structure and providing the first arc surface 23 on the optical structure 20, the light emitted from the display area 11 of the display module 10 can be refracted and distributed to the normal viewing area corresponding to the black border area 12, visually eliminating the black border area 12 and improving the user's visual effect of splicing, thereby achieving the user's subjective feeling that there is no visually black border area 12. Specifically, by refracting the light rays through the first arc surface 23 of the optical structure 20, the display area 11 of the display module 10 is "enlarged" on the imaging plane, achieving the visual effect of eliminating the physical black border area 12 of the splicing display unit 2.

[0082] Furthermore, the distance from the first arc surface 23 to the plane on which the display module 10 is located gradually decreases from a direction away from the display module 10 to a direction closer to the display module 10, and the first arc surface 23 has a convex arc surface structure. The convex arc surface structure means that the arc surface protrudes in a direction away from the center of the optical structure.

[0083] That is, the first arcuate surface 23 extends from the plane where the first surface 21 is located toward the display module 10, forming a convex arcuate surface structure, thereby forming a structure similar to a convex lens, which refracts light emitted from the display area 11 of the display module 10 and distributes the refracted light to the normal viewing area corresponding to the black border area 12. Furthermore, by defining the parameters of the convex lens structure, it is possible to deflect the light path at a certain angle from the incident light direction, thereby achieving the effect of enlarging the image, thereby eliminating the black border area 12 and improving the user experience.

[0084] In addition, compared with the prior art optical structures formed by stacking multiple sets of prism structures, and the technical solution of providing multiple sets of prism structures to translate the image into the area of the black border region, the optical structure 20 of the splicing display unit 2 of this embodiment has an image enlargement effect, is compatible with N*N splicing, and is a single structure, which avoids the change in screen effect caused by the assembly offset of multiple structures.

[0085] 3, the hatching has been removed to better illustrate the installation of the first arcuate surface 23 of the optical structure 20. The size L2 of the first arcuate surface 23 along the width direction of the black border region 12 in orthogonal projection on the display module 10 is at least twice the width w of the black border region 12 and is not greater than twice the width w of the black border region 12 plus 5 mm, with the width of the black border region 12 being 0.44 mm to 1.95 mm. By setting the size L2 of the first arcuate surface 23 along the width direction of the black border region 12 in orthogonal projection on the display module 10 to at least twice the width w of the black border region 12, the black border region 12 is shielded, but if L2 is too large, the refraction effect is reduced.

[0086] The first arcuate surface 23 includes a first end 231 closer to the display module 10 and a second end 232 further away from the display module 10. The distance D3 from the horizontal plane where the first end 231 of the first arcuate surface 23 is located to the horizontal plane where the second end 232 of the first arcuate surface 23 is located is less than half the thickness D1 of the optical structure 20. Within this range, the greater the value of the distance D3 from the horizontal plane where the first end 231 of the first arcuate surface 23 is located to the horizontal plane where the second end 232 of the first arcuate surface 23 is located, the higher the refractive effect and the emmetropia effect. However, the thickness of the optical structure increases, which increases the weight and material costs. Therefore, the design must be comprehensively considered. Preferably, the distance D3 from the horizontal plane where the first end 231 of the first arcuate surface 23 is located to the horizontal plane where the second end 232 of the first arcuate surface 23 is located is 2 mm to 4 mm.

[0087] The radius R1 of the first arcuate surface 23 is at least twice the width w of the black border region 12 and is not more than 5 mm plus twice the width w of the black border region 12. Preferably, the radius R1 of the first arcuate surface 23 is 2 mm to 5 mm.

[0088] The arc length L1 of the first arc surface 23 is jointly determined by the size L2 of the first arc surface 23 along the width direction of the black border area 12 of the display module 10 in orthogonal projection, the distance D3 from the horizontal plane on which the first end 231 of the first arc surface 23 is located to the horizontal plane on which the second end 232 of the first arc surface 23 is located, and the radius R1 of the first arc surface 23. The longer the arc length L1 of the first arc surface 23, the longer the seam length that can be covered, so the seam length needs to be designed comprehensively.

[0089] In this embodiment, the thickness D1 of the optical structure 20 is 3 mm to 10 mm. The material of the optical structure 20 is glass, PMMA (polymethyl methacrylate), PC (polycarbonate), etc. The optical structure 20 is fixed to the display module 10 via an optical adhesive layer 40.

[0090] The second surface 22 of the optical structure 20 in this embodiment is a generally flat plane.

[0091] The splicing display unit 2 of this embodiment can visually eliminate the black border area 12, improve the user's visual effect on splicing, and achieve the user's subjective feeling that there is no black border area 12 visually.

[0092] Example 4

[0093] 19, the overall structure of the splicing display unit of this embodiment is substantially the same as that of the third embodiment, except that the end of the second surface 22 of the optical structure 20 close to the black border area 12 is a second arcuate surface 24, and the light emitted from the display area 11 of the display module 10 is reflected by the second arcuate surface 24 to supplement the light rays in the non-normal viewing area corresponding to the black border area 12. The structure of the optical structure 20 of this embodiment may be seen in FIG.

[0094] As explained, the non-normal viewing area corresponding to the black border area 12 refers to the area where the black border area 12 would be observed in the absence of the optical structure when the user views the display module 10 at a non-normal viewing angle (i.e., an angle that is not perpendicular to the display module 10, i.e., an oblique or wide viewing angle).

[0095] In this way, by providing the second arc surface 24, the light emitted from the display area 11 of the display module 10 can be reflected, and the light rays can be emitted through the first surface 21 of the optical structure, thereby supplementing the light rays in the non-normal viewing area corresponding to the black border area 12, and visually eliminating the black border area 12 even in the non-normal viewing area corresponding to the black border area 12, further improving the user's visual effect of splicing and achieving the user's subjective feeling that there is no black border area 12 visually.

[0096] Furthermore, the second arcuate surface 24 has a concave arcuate structure. The concave arcuate structure means that the arcuate surface is concave toward the center of the optical structure.

[0097] Specifically, in order to cover the length of the seam from an oblique viewing angle, the size L4 along the width direction of the black border area 12 of the orthogonal projection on the display module 10 of the second arc surface 24 is greater than the width w of the black border area 12 and less than the width w of the black border area 12 plus 0.5 mm.

[0098] The second arcuate surface 24 includes a third end 241 that is closer to the display module 10 and a fourth end 242 that is farther away from the display module 10 .

[0099] The distance D2 from the horizontal plane where the fourth end 242 is located to the horizontal plane where the third end 241 is located is at least the width w of the black border area 12 plus 0.5 mm. The larger the value of D2, the better the display effect at the oblique angle, but the thickness of the optical structure will increase, resulting in increased weight and material costs. Therefore, the design must take into consideration the oblique angle and the thickness of the model comprehensively. Generally, the distance D2 from the horizontal plane where the fourth end 242 is located to the horizontal plane where the third end 241 is located is set to be at least the width w of the black border area 12 and no greater than the thickness of the optical structure minus 1 mm.

[0100] The distance D4 between the end of the first arcuate surface 23 closest to the second surface 22 (the first end 231 of the first arcuate surface 23) and the end of the second arcuate surface 24 closest to the first surface 21 (the fourth end 242 of the second arcuate surface 24) is greater than 0. Preferably, the distance D4 between the first end 231 of the first arcuate surface 23 and the fourth end 242 of the second arcuate surface 24 is greater than or equal to 0.3 mm and less than or equal to 1 mm, thereby avoiding sharp corners that may cause damage during assembly and operation and facilitating material processing. As described above, when the side edge 25 connected between the first surface 21 and the second surface 22 is perpendicular to the display module 10, the length of the side edge 25 is the distance D4 between the first end 231 of the first arcuate surface 23 and the fourth end 242 of the second arcuate surface 24.

[0101] The radius R2 of the second arcuate surface 24 is 2mm to 8mm. The smaller the radius R2 of the second arcuate surface 24, the better the display effect at an oblique angle but the worse the display effect at a normal angle, and vice versa. Therefore, it is necessary to balance the display effects at normal and oblique angles in the design, and the optimal effect is achieved when the radius R2 of the second arcuate surface 24 is 2mm to 8mm. The arc length L3 of the second arcuate surface 24 is jointly determined by the size L4 of the second arcuate surface 24 along the width direction of the black border area 12 of the orthogonal projection on the display module 10, the distance D2 from the horizontal plane where the fourth end 242 is located to the horizontal plane where the third end 241 is located, and the radius R2 of the second arcuate surface 24.

[0102] In this second embodiment, when the end of the second surface 22 of the optical structure 20 close to the black border area 12 is configured as a concave arc surface, the user cannot substantially observe the black border area 12 at a normal viewing angle, and when the user views the display module 10 at a 45-degree oblique viewing angle, the user cannot fully observe the black border area 12. That is, when the end of the second surface 22 close to the black border area 12 is configured as a concave arc surface, all light rays can exit the optical structure 20, thereby improving the black border area 12 at wide viewing angles, and the improvement effect is good.

[0103] In the optical structure 20 of this embodiment, the end of the first surface 21 close to the black border region 12 is configured as a convex arc surface structure, and the end of the second surface 22 close to the black border region 12 is configured as a concave arc surface structure, thereby simultaneously eliminating the seam problems at both normal and wide viewing angles.

[0104] The above are only preferred embodiments of the present invention, and do not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention. [Explanation of symbols]

[0105] 1 display screen 2 Display Unit 10 Display Module 11 Display area 12 Black border area 20 Optical structure 21 1st surface 22 Second surface 23 First circular arc surface 24 Second circular arc surface 30 seams 40 Optical adhesive layer 231 1st end 232 2nd end

Claims

1. 1. A display screen, comprising: The display device includes a plurality of closely arranged display modules and a plurality of optical structures, each optical structure being provided corresponding to one of the display modules and being provided on the light output surface side of the display module, two adjacent display modules being provided in close contact with each other, and the optical structures on the two adjacent display modules being provided in close contact with each other, Each of the display modules includes a display area and a black border area surrounding the display area, and the black border areas of two adjacent display modules are spliced together to form a seam; Each of the optical structures includes a first surface and a second surface facing each other, and the second surface of the optical structure is in close contact with the display module; an end of the first surface of the optical structure close to the seam is a first arcuate surface, the first arcuate surface is a convex arcuate surface structure, and the first arcuate surface is used to refract light emitted from a display area of the display module and distribute it to a normal viewing area corresponding to the seam; an end of the second surface of the optical structure close to the seam is a second arcuate surface, the second arcuate surface is a concave arcuate surface structure, and the light emitted from the display area of the display module is reflected by the second arcuate surface to supplement the light rays in the non-normal viewing area corresponding to the seam; The radius of the first arcuate surface is 2 mm to 5 mm, A display screen, characterized in that a distance between an end of the first arcuate surface close to the second surface and an end of the second arcuate surface close to the first surface is 0.3 mm or more and 1 mm or less.

2. a size of the orthogonal projection of the first arc surface on the display module along a width direction of the seam is equal to or greater than the width of the seam and is equal to or smaller than the width of the seam plus 5 mm, and the width of the seam is 0.88 mm to 3.9 mm; the first arcuate surface includes a first end close to the display module and a second end away from the display module, a distance from a horizontal plane on which the first end of the first arcuate surface is located to a horizontal plane on which the second end of the first arcuate surface is located is not more than half the thickness of the optical structure, a radius of the first arcuate surface is not less than the width of the seam and not more than the width of the seam plus 5 mm, and the width of the seam is 0.88 mm to 3.9 mm; 2. The display screen of claim 1, wherein the optical structure has a thickness of 3 mm to 10 mm.

3. the second arcuate surface includes a third end close to the display module and a fourth end away from the display module, and a distance from a horizontal plane on which the fourth end is located to a horizontal plane on which the third end is located is equal to or greater than half the width of the seam and is equal to or less than a thickness of the optical structure minus 1 mm; 2. The display screen according to claim 1, wherein the radius of the second arcuate surface is 2 mm to 8 mm.

4. A splicing display unit, The display module and the optical structure are stacked together, and the optical structure is provided on the light output surface side of the display module. the display module includes a display area and a black border area surrounding the display area; Each of the optical structures includes a first surface and a second surface facing each other, and the second surface of the optical structure is in close contact with the display module; an end of the first surface of the optical structure close to the black border area of the display module is a first arcuate surface, the first arcuate surface has a convex arcuate structure, and the first arcuate surface is used to refract light emitted from the display area of the display module and distribute it to a normal viewing area corresponding to the black border area; an end of the second surface of the optical structure close to the black border area of the display module is a second arcuate surface, the second arcuate surface is a concave arcuate surface structure, and the light emitted from the display area of the display module is reflected by the second arcuate surface to supplement the light rays of the non-normal viewing area corresponding to the black border area; The radius of the first arcuate surface is 2 mm to 5 mm, A splicing display unit, characterized in that the distance between the end of the first arcuate surface closest to the second surface and the end of the second arcuate surface closest to the first surface is 0.3 mm or more and 1 mm or less.

5. a size of the first arcuate surface in the width direction of the black border area when projected orthogonally on the display module is at least twice the width of the black border area and is not more than twice the width of the black border area plus 5 mm, and the width of the black border area is 0.44 mm to 1.95 mm; the first arcuate surface includes a first end close to the display module and a second end away from the display module, and a distance from a horizontal plane on which the first end of the first arcuate surface is located to a horizontal plane on which the second end of the first arcuate surface is located is equal to or less than half the thickness of the optical structure; the radius of the first arcuate surface is equal to or greater than twice the width of the black border region and equal to or less than twice the width of the black border region plus 5 mm, and the width of the black border region is 0.44 mm to 1.95 mm; The splicing display unit according to claim 4, wherein the thickness of the optical structure is 3 mm to 10 mm.

6. the second arcuate surface includes a third end close to the display module and a fourth end away from the display module, the distance from the fourth end to the third end being equal to or greater than the width of the black border area and equal to or less than the thickness of the optical structure minus 1 mm, and the width of the black border area is 0.44 mm to 1.95 mm; The splicing display unit according to claim 4, wherein the radius of the second arc surface is 2 mm to 8 mm.

Images