A spliced ​​display unit and display screen

Abstract

The present application provides a spliced ​​display unit and a display screen, so as to visually eliminate the seams, improve the visual effect of users after splicing, and achieve the subjective feeling of users' visual seamlessness. The display screen includes a plurality of closely arranged display modules and a plurality of optical structures; each display module includes a display area and a black border area arranged around the display area, and the black border areas of two adjacent display modules are spliced ​​together to form a seam; the first surface of the optical structure is a first curved surface at one end close to the seam, and the first curved surface is used to refract the light emitted from the display area of ​​the display module and distribute it to the front view area corresponding to the seam.

Description

Technical Field

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

[0002] As market and user demands increase, spliced ​​screens are constantly pursuing extremely narrow borders to achieve a better visual experience. However, due to the structure of sealed liquid crystals in LCD screens, the black matrix at the edge and the technical limitations of the sealed area make it impossible to completely eliminate the black edge of the screen. After splicing, there will be an obvious black edge, i.e., a splicing seam. Figure 1 The B area in the image seriously affects the visual effect of users when viewing the displayed image.

[0003] Therefore, how to improve the user's visual effect and achieve the user's subjective feeling of seamless vision is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0004] The present application provides a splicing display unit and a display screen, which can visually eliminate splicing seams, improve the user's visual effect after splicing, and achieve the user's subjective feeling of seamless vision.

[0005] According to a first aspect of an embodiment of the present application, a display screen is provided, the display screen comprising a plurality of closely arranged display modules and a plurality of optical structures, each optical structure being arranged corresponding to one of the display modules and arranged on one side of a light emitting surface of the display module, two adjacent display modules being arranged closely together, and the optical structures on two adjacent display modules being arranged closely together;

[0006] Each of the display modules comprises a display area and a black border area arranged around the display area, and the black border areas of two adjacent display modules are spliced ​​together to form a splicing seam;

[0007] Each of the optical structures comprises a first surface and a second surface which are arranged opposite to each other, and the second surface of the optical structure is attached to the display module;

[0008] One end of the first surface of the optical structure close to the seam is a first curved surface, and the first curved surface is used to refract the light emitted from the display area of ​​the display module and distribute it to the front view area corresponding to the seam.

[0009] Optionally, the first curved surface is an outwardly convex curved surface structure.

[0010] Optionally, a dimension of the orthographic projection of the first curved surface on the display module along the width direction of the seam is greater than or equal to the width of the seam and less than or equal to the width of the seam plus 5 mm, and the width of the seam is 0.88 mm-3.9 mm; and / or,

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

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

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

[0014] The thickness of the optical structure is 3 mm-10 mm.

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

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

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

[0018] A distance between an end of the first curved surface close to the second surface and an end of the second curved surface close to the first surface is greater than or equal to 0.3 mm and less than or equal to 1 mm; and / or,

[0019] The radius of the second curved surface is 2 mm-8 mm.

[0020] According to a second aspect of an embodiment of the present application, a spliced ​​display unit is provided, the spliced ​​display unit comprising a stacked display module and an optical structure, wherein the optical structure is arranged on one side of a light emitting surface of the display module;

[0021] The display module includes a display area and a black border area arranged around the display area;

[0022] Each of the optical structures comprises a first surface and a second surface which are arranged opposite to each other, and the second surface of the optical structure is attached to the display module;

[0023] One end of the first surface of the optical structure close to the black border area of ​​the display module is a first curved surface, and the first curved surface is used to refract the light emitted from the display area of ​​the display module and distribute it to the front view area corresponding to the black border area.

[0024] Optionally, the first curved surface is an outwardly convex curved surface structure.

[0025] Optionally, the dimension of the orthographic projection of the first curved surface on the display module along the width direction of the joint is greater than or equal to twice the width of the black border area, and less than or equal to twice the width of the black border area plus 5 mm, and the width of the black border area is 0.44 mm-1.95 mm; and / or,

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

[0027] The radius of the first curved surface is greater than or equal to twice the width of the black border area, and less than or equal to twice the width of the black border area plus 5 mm, and the width of the black border area is 0.44 mm-1.95 mm; and / or,

[0028] The radius of the first curved surface is 2 mm-5 mm; and / or;

[0029] The thickness of the optical structure is 3 mm-10 mm.

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

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

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

[0033] A distance between one end of the first curved surface close to the second surface and one end of the second curved surface close to the first surface is greater than or equal to 0.3 mm and less than or equal to 1 mm; and / or;

[0034] The radius of the second curved surface is 2 mm-8 mm.

[0035] The display screen of the present application, by setting an overall structure and setting a first curved surface in the optical structure, can refract the light emitted from the display area of ​​the display module and distribute it to the front viewing area corresponding to the seam, thereby visually eliminating the seam, improving the user's visual effect after splicing, and achieving the user's subjective feeling of seamless vision.

[0036] The spliced ​​display unit of the present application is provided with an overall structure and a first curved surface in the optical structure, so that the light emitted from the display area of ​​the display module can be refracted and distributed in the front view area corresponding to the black border area, so that the black border area can be visually eliminated, the visual effect of the user after splicing is improved, and the user's subjective feeling of no black border area is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a front view simulated brightness distribution diagram of a display screen in the prior art.

[0038] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the display screen of Example 1 of the present application.

[0039] Figure 3 It is a schematic diagram of the light path emitted by the display module of the display screen of Example 1 of the present application.

[0040] Figure 4 It is a schematic diagram of a partial cross-sectional structure of the optical structure of the display screen of Example 1 of the present application.

[0041] Figure 5 This is a front view simulated brightness distribution diagram of the display screen of Example 1 of the present application.

[0042] Figure 6 It is a schematic diagram of a partial cross-sectional structure of the display screen of Example 2 of the present application.

[0043] Figure 7 It is a schematic diagram of the light path emitted by the display module of the display screen of Example 2 of the present application.

[0044] Figure 8 It is a schematic diagram of a partial cross-sectional structure of the optical structure of the display screen of Example 2 of the present application.

[0045] Fig. 9 This is a front view simulated brightness distribution diagram of the display screen of Example 2 of the present application.

[0046] Fig.10 It is a 45-degree light path diagram of the optical structure of the display screen of Example 1 of the present application.

[0047] Fig.11It is a schematic diagram of the optical structure of another embodiment of the display screen of the present application.

[0048] Fig.12 It is a front view simulated brightness distribution diagram of the optical structure of another embodiment of the display screen of the present application.

[0049] Fig.13 It is a 45-degree light path diagram of the optical structure of another embodiment of the display screen of the present application.

[0050] Fig.14 It is a schematic diagram of the optical structure of another embodiment of the display screen of the present application.

[0051] Fig.15 This is a front view simulated brightness distribution diagram of the optical structure of another embodiment of the display screen of the present application.

[0052] Fig.16 This is a 45-degree light path diagram of the optical structure of another embodiment of the display screen of the present application.

[0053] Fig.17 This is a 45-degree light path diagram of the optical structure of the display screen of Example 2 of the present application.

[0054] Fig.18 It is a schematic cross-sectional structure diagram of the spliced ​​display unit of Example 3 of the present application.

[0055] Fig.19 It is a schematic diagram of the cross-sectional structure of the spliced ​​display unit of Example 4 of the present application. DETAILED DESCRIPTION

[0056] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0057] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. Similar words such as "one" or "one" used in this application specification and claims do not indicate a quantitative limitation, but indicate that there is at least one. Similar words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" cover the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. "Multiple" includes two, which is equivalent to at least two. The singular forms of "one", "" and "the" used in this application specification and the attached claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in this article refers to and includes any or all possible combinations of one or more associated listed items.

[0058] Example 1

[0059] like Figures 2 to 4 As shown, the present 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 is arranged corresponding to a display module 10 and is arranged on one side of the light emitting surface of the display module 10, two adjacent display modules 10 are arranged closely, and the optical structures 20 on two adjacent display modules 10 are arranged closely.

[0060] Each display module 10 includes a display area 11 and a black border area 12 arranged around the display area 11, that is, the display area 11 is located at the center of the display module, and the black border area 12 is arranged around the display area 11, so as to be located at the edge of the display module. The black border areas 12 of two adjacent display modules 10 are spliced ​​together to form a splicing seam 30.

[0061] Each optical structure 20 includes a first surface 21 and a second surface 22 that are oppositely disposed. The second surface 22 of the optical structure 20 is attached to the display module 10 .

[0062] The first surface 21 of the optical structure 20 is provided at one end close to the seam 30 as a first curved surface 23, and the first curved surface 23 is used to refract the light emitted from the display area 11 of the display module 10 and distribute it to the front view area corresponding to the seam 30. Figure 2As shown, the arrow direction in the figure is the propagation direction of the light emitted from the display area 11 of the display module 10. In order to better illustrate the propagation direction of the light emitted from the display area 11 of the display module 10, the section line in the figure is removed.

[0063] It should be noted that the front-view area corresponding to the seam 30 refers to the area where the seam 30 is observed when the user views the display module 10 at a front-view angle (ie, an angle perpendicular to the display module 10 ) in the absence of an optical structure.

[0064] In this way, by setting the overall structure and setting the first curved surface 23 in the optical structure 20, the light emitted from the display area 11 of the display module 10 can be refracted and distributed in the front view area corresponding to the joint 30, so that the joint 30 can be visually eliminated, and the visual effect of the user after the joint is improved, so as to achieve the subjective feeling of the user that there is no joint 30. Specifically, the light is refracted by the first curved surface 23 of the optical structure 20, so that the display area 11 of the display module 10 is "enlarged" to the imaging surface, so as to achieve the visual effect that the physical joint 30 of the display screen 1 is eliminated.

[0065] Furthermore, the first arc surface 23 is an outwardly convex arc surface structure, wherein the outwardly convex arc surface structure means that the arc surface bulges away from the center direction of the optical structure, and the end surface of the first arc surface 23 is located within the edge of the optical structure 20 .

[0066] That is, the first curved surface 23 extends from the plane where the first surface 21 is located toward the direction close to the display module 10 to form an outward convex curved surface structure, thereby forming a structure similar to a convex lens, so as to refract the light emitted from the display area 11 of the display module 10, so that the refracted light is distributed in the front view area corresponding to the joint 30. Further, by defining the parameters of the convex lens structure, the light path can be deviated from the incident light direction by a specific angle to achieve the effect of magnifying the image, thereby eliminating the joint 30 and improving the user experience.

[0067] Furthermore, compared to some optical structures 20 in the prior art that are formed by overlapping several groups of prism structures, and technical solutions in which several groups of prism structures are set to translate the image to the area of ​​the seam 30, the optical structure 20 of the display screen 1 of this embodiment has an image magnification effect, is suitable for N*N splicing, and is a single structure, thereby avoiding changes in picture effects caused by offset of multi-structure assembly.

[0068] Specifically, Figure 3As shown, in order to better illustrate the setting of the first curved surface 23 in the optical structure 20, the section line in the figure is removed. The dimension L2 of the orthographic projection of the first curved surface 23 on the display module 10 along the width direction of the joint 30 is greater than or equal to the width W of the joint 30, and less than or equal to the width W of the joint 30 plus 5mm, and the width W of the joint 30 is 0.88mm-3.9mm. By setting the dimension L2 of the orthographic projection of the first curved surface 23 on the display module 10 along the width direction of the joint 30 to be greater than or equal to the width W of the joint 30, the joint 30 can be blocked, but if it is too large, the refraction effect will be reduced.

[0069] The first curved surface 23 includes a first end 231 close to the display module 10 and a second end 232 away from the display module 10. The distance D3 from the horizontal plane where the first end 231 of the first curved surface 23 is located to the horizontal plane where the second end 232 of the first curved surface 23 is located is less than or equal to half of the thickness D1 of the optical structure 20. Within this range, the larger the value of the distance D3 from the horizontal plane where the first end 231 of the first curved surface 23 is located to the horizontal plane where the second end 232 of the first curved surface 23 is located, the better the refraction effect and the better the front view effect are, but the thickness of the optical structure will be larger, increasing the weight and material cost; comprehensive considerations are required during design. Preferably, the distance D3 from the horizontal plane where the first end 231 of the first curved surface 23 is located to the horizontal plane where the second end 232 of the first curved surface 23 is located is 2mm-4mm.

[0070] The radius R1 of the first curved surface 23 is greater than or equal to the width W of the joint 30, and less than or equal to the width W of the joint 30 plus 5 mm. Preferably, the radius R1 of the first curved surface 23 is 2 mm-5 mm.

[0071] The arc length L1 of the first arc surface 23 is defined by the dimension L2 of the orthographic projection of the first arc surface 23 on the display module 10 along the width direction of the joint 30, the distance D3 from the horizontal plane where the first end 231 of the first arc surface 23 is located to the horizontal plane where the second end 232 of the first arc surface 23 is located, and the radius R1 of the first arc surface 23. The larger the arc length L1 of the first arc surface 23 is, the longer the length of the joint that can be covered is, and the joint length needs to be comprehensively designed.

[0072] In this embodiment, the thickness D1 of the optical structure 20 is 3 mm-10 mm. The material of the optical structure 20 is glass, or PMMA (full name: polymethyl methacrylate, Chinese name: polymethyl methacrylate), or PC (polycarbonate). The optical structure 20 is fixed to the display module 10 through the optical adhesive layer 40.

[0073] The second surface 22 of the optical structure 20 in this embodiment is an overall flat plane.

[0074] The front view simulation brightness distribution diagram of the display screen 1 of this embodiment is as follows Figure 5 As shown, from Figure 5 It can be seen that at a normal viewing angle, the user will basically not observe the joint 30 at the normal viewing angle, so that the joint 30 can be visually eliminated, the user's visual effect after splicing is improved, and the user's subjective feeling of no joint 30 is achieved.

[0075] Example 2

[0076] like Figure 6-Figure 9 As shown, the overall structure of the display screen of this embodiment is basically the same as the structure in Example 1, the difference is that the end of the second surface 22 of the optical structure 20 close to the joint 30 is a second curved surface 24, and the light emitted from the display area 11 of the display module 10 is reflected by the second curved surface 24 to supplement the light of the non-frontal area corresponding to the joint 30.

[0077] It should be noted that the non-orthogonal area corresponding to the seam 30 refers to the area where the seam 30 is observed when the user views the display module 10 at a non-orthogonal angle (i.e., an angle not perpendicular to the display module 10, i.e., an oblique angle or a wide angle) in the absence of an optical structure.

[0078] In this way, by setting the second curved surface 24, the light emitted from the display area 11 of the display module 10 can be reflected, and the light is then emitted through the first surface 21 of the light structure, so as to supplement the light in the non-frontal area corresponding to the seam 30, and achieve the goal of visually eliminating the seam 30 in the non-frontal area corresponding to the seam 30, further improving the user's visual effect after splicing, and achieving the user's subjective feeling of no visual seam 30.

[0079] Furthermore, the second arc surface 24 is a concave arc surface structure, wherein the concave arc surface structure refers to the arc surface being concave toward the center direction of the optical structure.

[0080] Specifically, the dimension L4 of the orthographic projection of the second curved surface 24 on the display module 10 along the width direction of the seam 30 is greater than or equal to one-half the width W of the seam 30, and less than or equal to one-half the width W of the seam 30 plus 0.5 mm, so as to cover the length of the seam from an oblique viewing angle.

[0081] The second curved surface 24 includes a third end 241 close to the display module 10 and a fourth end 242 far from the display module 10 .

[0082] 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 greater than or equal to half of the width W of the joint 30 plus 0.5 mm. The larger the value of D2, the better the oblique viewing angle effect, but the thickness of the optical structure is greater, which increases the weight and material cost. The oblique viewing angle and the thickness of the model need to be comprehensively considered during design. 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 greater than or equal to half of the width of the joint, and less than or equal to the thickness of the optical structure minus 1 mm.

[0083] The distance D4 between the end of the first curved surface 23 closest to the second surface 22 (the first end 231 of the first curved surface 23) and the end of the second curved surface 24 closest to the first surface 21 (the fourth end 242 of the second curved surface 24) is greater than 0. Preferably, the distance D4 between the first end 231 of the first curved surface 23 and the fourth end 242 of the second curved surface 24 is greater than or equal to 0.3 mm and less than or equal to 1 mm, so as to avoid scratches caused by sharp corners during assembly and operation, and facilitate material processing. It should be noted that when the side edge 25 connected between the first surface 21 and the second surface 22 is arranged 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 curved surface 23 and the fourth end 242 of the second curved surface 24.

[0084] The radius R2 of the second curved surface 24 is 2mm-8mm. The smaller the value of the radius R2 of the second curved surface 24, the better the oblique viewing effect, but the worse the front viewing effect; vice versa; therefore, the design needs to balance the front and oblique viewing effects, and the radius R2 of the second curved surface 24 is 2mm-8mm for the best effect. The arc length L3 of the second curved surface 24 is defined by the dimension L4 of the orthographic projection of the second curved surface 24 on the display module 10 along the width direction of the joint 30, 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 curved surface 24.

[0085] The end of the second surface 22 of the optical structure 20 in this embodiment close to the seam 30 is a concave arc surface structure. The front view simulation brightness distribution diagram of the display screen 1 in this embodiment is as follows: Fig. 9 As shown, from Fig. 9 It can be seen that at a normal viewing angle, the user will basically not observe the joint 30 at the normal viewing angle, so that the joint 30 can be visually eliminated, the user's visual effect after splicing is improved, and the user's subjective feeling of no joint 30 is achieved.

[0086] It should be noted that the end of the second surface 22 close to the seam 30 may also be in other structural forms, but they have different effects on the light path at oblique viewing angles.

[0087] For example, in the optical structure 20 in Embodiment 1, when the second surface 22 is an integral flat plane, please refer to Figure 5 , the user will hardly observe the seam 30 at a straight-on angle. Fig.10 As shown, when the user views the display module 10 at an oblique viewing angle of 45 degrees, the user can observe a structure of a portion of the seam 30, namely, the portion O in the figure. That is, the optical structure 20 in Example 1 can visually eliminate the seam 30 seen at a normal viewing angle through the first curved surface 23, but cannot solve the seam 30 seen by the user at an oblique viewing angle or a wide viewing angle.

[0088] Likewise, in another embodiment, if Fig.11 As shown, when the end of the second surface 22 of the optical structure 20 close to the seam 30 is a straight surface that forms a certain angle with the plane where the display module 10 is located, as shown in FIG. Fig.12 As shown in FIG. 3 , the user will hardly observe the seam 30 at a straight-on angle. Fig.13 As shown, when the user views the display module 10 at an oblique viewing angle of 45 degrees, the user can also observe the structure of part of the joint 30, i.e., part P in the figure. That is, when the end of the second surface 22 close to the joint 30 is set as a flat surface forming a certain angle with the plane where the display module 10 is located, only part of the light can be emitted from the optical structure 20 to improve the joint 30 seen by the user at an oblique viewing angle or a wide viewing angle, and the improvement effect is general.

[0089] In another embodiment, Fig.14 As shown, when the end of the second surface 22 of the optical structure 20 close to the seam 30 is a convex curved surface structure, as shown in FIG. Fig.15 As shown in FIG. 3 , the user will hardly observe the seam 30 at a straight-on angle. Fig.16 As shown, when the user views the display module 10 at an oblique viewing angle of 45 degrees, the user can still observe the structure of part of the joint 30, i.e., part Q in the figure. That is, when the end of the second surface 22 close to the joint 30 is set as an outward convex arc surface structure, only a very small part of the light can be emitted from the optical structure 20 to improve the joint 30 seen by the user at an oblique viewing angle or a wide viewing angle, and the improvement effect is not good.

[0090] Only when the end of the second surface 22 of the optical structure 20 of the second embodiment close to the seam 30 is a concave arc structure, not only the user will not be able to see the seam 30 at a straight-view angle (see also Fig. 9 Moreover, when the user views the display module 10 at a 45-degree oblique viewing angle (such as Fig.17 That is, when the end of the second surface 22 close to the joint 30 is set as a concave arc structure, all light can be emitted from the optical structure 20 to improve the large viewing angle joint 30, and the improvement effect is good.

[0091] Through the above deduction, it can be obtained that the optimal optical structure 20 is when the end of the first surface 21 close to the seam 30 is a convex arc surface structure, and the end of the second surface 22 close to the seam 30 is a concave arc surface structure, which can eliminate the seam problem of both the positive viewing angle and the large viewing angle.

[0092] Example 3

[0093] like Fig.18 As shown, this embodiment provides a splicing display unit 2. A plurality of splicing display units 2 are closely arranged to form the display screen in Embodiment 1. That is, the splicing display unit 2 in this embodiment is the smallest splicing unit of the display screen in Embodiment 1.

[0094] The spliced ​​display unit 2 includes a stacked display module 10 and an optical structure 20, wherein the optical structure 20 is disposed on one side of the light emitting surface of the display module 10. For the structure of the optical structure 20 of this embodiment, please refer to Figure 4 .

[0095] The display module 10 includes a display area 11 and a black border area 12 arranged around the display area 11, that is, the display area 11 is located at the center of the display module 10, and the black border area 12 is arranged around the display area 11, so as to be located at the edge of the display module 10. When a plurality of spliced ​​display units 2 are closely arranged, the black border areas 12 of two adjacent display modules 10 are spliced ​​together to form a splicing seam 30 of the display screen in Example 1.

[0096] Each optical structure 20 includes a first surface 21 and a second surface 22 that are oppositely disposed. The second surface 22 of the optical structure 20 is attached to the display module 10 .

[0097] The first surface 21 of the optical structure 20 has a first curved surface 23 at one end close to the black border area 12 of the display module 10 . The first curved surface 23 is used to refract the light emitted from the display area 11 of the display module 10 and distribute it to the front view area corresponding to the black border area 12 .

[0098] It should be noted that the normal viewing area corresponding to the black border area 12 refers to the area where the black border area 12 is observed when the user views the display module 10 at a normal viewing angle (ie, an angle perpendicular to the display module 10 ) without an optical structure.

[0099] In this way, by setting the overall structure and setting the first curved surface 23 in the optical structure 20, the light emitted from the display area 11 of the display module 10 can be refracted and distributed in the front view area corresponding to the black border area 12, so that the black border area 12 can be visually eliminated, and the visual effect of the user after splicing is improved, so as to achieve the subjective feeling of the user's visual absence of the black border area 12. Specifically, the light is refracted by the first curved surface 23 of the optical structure 20, so that the display area 11 of the display module 10 is "enlarged" to the imaging surface, so as to achieve the visual effect that the physical black border area 12 of the spliced ​​display unit 2 is eliminated.

[0100] Furthermore, the distance between the first curved surface 23 and the plane where the display module 10 is located gradually decreases from the direction away from the display module 10 to the direction close to the display module 10, and the first curved surface 23 is a convex curved surface structure. The convex curved surface structure means that the curved surface is convex in the direction away from the center of the optical structure.

[0101] That is, the first curved surface 23 extends from the plane where the first surface 21 is located toward the direction close to the display module 10 to form an outward convex curved surface structure, thereby forming a structure similar to a convex lens, so as to refract the light emitted from the display area 11 of the display module 10, so that the refracted light is distributed in the normal viewing area corresponding to the black border area 12. Further, by defining the parameters of the convex lens structure, the light path can be deviated from the incident light direction by a specific angle to achieve the effect of magnifying the image, thereby eliminating the black border area 12 and improving the user experience.

[0102] Furthermore, compared to some optical structures 20 in the prior art that are formed by overlapping several groups of prism structures, and technical solutions in which several groups of prism structures are set to translate the image to the black border area 12, the optical structure 20 of the spliced ​​display unit 2 of this embodiment has an image magnification effect, is suitable for N*N splicing, and is a single structure, thereby avoiding changes in picture effects caused by offset of multi-structure assembly.

[0103] Specifically, Figure 3 As shown, in order to better show the setting of the first curved surface 23 in the optical structure 20, the section line in the figure is removed. The dimension L2 of the orthographic projection of the first curved surface 23 on the display module 10 along the width direction of the black border area 12 is greater than or equal to twice the width w of the black border area 12, and less than or equal to twice the width w of the black border area 12 plus 5mm, and the width of the black border area 12 is 0.44mm-1.95mm. By setting the dimension L2 of the orthographic projection of the first curved surface 23 on the display module 10 along the width direction of the black border area 12 to be greater than or equal to twice the width w of the black border area 12, the black border area 12 can be blocked, but if it is too large, the refraction effect will be reduced.

[0104] The first curved surface 23 includes a first end 231 close to the display module 10 and a second end 232 away from the display module 10. The distance D3 from the horizontal plane where the first end 231 of the first curved surface 23 is located to the horizontal plane where the second end 232 of the first curved surface 23 is located is less than or equal to half of the thickness D1 of the optical structure 20. Within this range, the larger the value of the distance D3 from the horizontal plane where the first end 231 of the first curved surface 23 is located to the horizontal plane where the second end 232 of the first curved surface 23 is located, the better the refraction effect and the better the front view effect are, but the thickness of the optical structure will be larger, increasing the weight and material cost; comprehensive considerations are required during design. Preferably, the distance D3 from the horizontal plane where the first end 231 of the first curved surface 23 is located to the horizontal plane where the second end 232 of the first curved surface 23 is located is 2mm-4mm.

[0105] The radius R1 of the first curved surface 23 is greater than or equal to twice the width w of the black border area 12, and less than or equal to twice the width w of the black border area 12 plus 5 mm. Preferably, the radius R1 of the first curved surface 23 is 2 mm-5 mm.

[0106] The arc length L1 of the first arc surface 23 is defined by the dimension L2 of the orthographic projection of the first arc surface 23 on the display module 10 along the width direction of the black border region 12, the distance D3 from the horizontal plane where the first end 231 of the first arc surface 23 is located to the horizontal plane where the second end 232 of the first arc surface 23 is located, and the radius R1 of the first arc surface 23. The larger the arc length L1 of the first arc surface 23 is, the longer the length of the seam that can be covered is, and the seam length needs to be comprehensively considered for design.

[0107] In this embodiment, the thickness D1 of the optical structure 20 is 3 mm-10 mm. The material of the optical structure 20 is glass, or PMMA (full name: polymethyl methacrylate, Chinese name: polymethyl methacrylate), or PC (polycarbonate). The optical structure 20 is fixed to the display module 10 through the optical adhesive layer 40.

[0108] The second surface 22 of the optical structure 20 in this embodiment is an overall flat plane.

[0109] The splicing display unit 2 of the present embodiment can visually eliminate the black border area 12 , thereby improving the visual effect of the user after splicing, and achieving the user's subjective feeling of having no black border area 12 .

[0110] Example 4

[0111] like Fig.19As shown, the overall structure of the spliced ​​display unit of this embodiment is basically the same as the structure in Embodiment 3, except that the second surface 22 of the optical structure 20 is close to the black border area 12 at one end thereof as a second curved surface 24, and the light emitted from the display area 11 of the display module 10 is reflected by the second curved surface 24 to supplement the light of the non-normal viewing area corresponding to the black border area 12. For the structure of the optical structure 20 of this embodiment, please refer to Figure 8 .

[0112] It should be noted that the non-frontal area corresponding to the black border area 12 refers to the area where the black border area 12 is observed when the user views the display module 10 at a non-frontal angle (i.e., an angle not perpendicular to the display module 10, i.e., an oblique angle or a wide angle) in the absence of an optical structure.

[0113] In this way, by setting the second curved surface 24, the light emitted from the display area 11 of the display module 10 can be reflected, and the light is then emitted through the first surface 21 of the light structure, so as to supplement the light in the non-direct view area corresponding to the black-border area 12, and the non-direct view area corresponding to the black-border area 12 can also visually eliminate the black-border area 12, further improving the user's visual effect after splicing, and achieving the user's subjective feeling of no black-border area 12.

[0114] Furthermore, the second arc surface 24 is a concave arc surface structure, wherein the concave arc surface structure refers to the arc surface being concave toward the center direction of the optical structure.

[0115] Specifically, the dimension L4 of the orthographic projection of the second curved surface 24 on the display module 10 along the width direction of the black border area 12 is greater than or equal to the width w of the black border area 12, and less than or equal to the width w of the black border area 12 plus 0.5 mm, so as to cover the length of the seam from an oblique viewing angle.

[0116] The second curved surface 24 includes a third end 241 close to the display module 10 and a fourth end 242 far from the display module 10 .

[0117] 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 greater than or equal to the width w of the black border area 12 plus 0.5 mm. The larger the value of D2, the better the oblique viewing angle effect, but the thickness of the optical structure is greater, which increases the weight and material cost. The oblique viewing angle and the thickness of the model need to be comprehensively considered during design. 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 greater than or equal to the width w of the black border area 12, and less than or equal to the thickness of the optical structure minus 1 mm.

[0118] The distance D4 between the end of the first curved surface 23 closest to the second surface 22 (the first end 231 of the first curved surface 23) and the end of the second curved surface 24 closest to the first surface 21 (the fourth end 242 of the second curved surface 24) is greater than 0. Preferably, the distance D4 between the first end 231 of the first curved surface 23 and the fourth end 242 of the second curved surface 24 is greater than or equal to 0.3 mm and less than or equal to 1 mm, so as to avoid scratches caused by sharp corners during assembly and operation, and facilitate material processing. It should be noted that when the side edge 25 connected between the first surface 21 and the second surface 22 is arranged 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 curved surface 23 and the fourth end 242 of the second curved surface 24.

[0119] The radius R2 of the second curved surface 24 is 2mm-8mm. The smaller the value of the radius R2 of the second curved surface 24, the better the oblique viewing effect, but the worse the front viewing effect; vice versa; therefore, the design needs to balance the front and oblique viewing effects, and the radius R2 of the second curved surface 24 is 2mm-8mm for the best effect. The arc length L3 of the second curved surface 24 is defined by the dimension L4 of the orthographic projection of the second curved surface 24 on the display module 10 along the width direction of the black border area 12, 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 curved surface 24.

[0120] Under the setting condition that the end of the second surface 22 of the optical structure 20 close to the black border area 12 is a concave arc surface structure, not only the user will basically not observe the black border area 12 at the normal viewing angle; but also the user will not observe the black border area 12 at all when viewing the display module 10 at a 45-degree oblique viewing angle. That is, by setting the end of the second surface 22 close to the black border area 12 as a concave arc surface structure, the light can be emitted from the optical structure 20 to improve the black border area 12 at a large viewing angle, and the improvement effect is good.

[0121] The optical structure 20 of this embodiment can eliminate the stitching problem of both the normal viewing angle and the wide viewing angle by setting the end of the first surface 21 close to the black border area 12 to be a convex arc surface structure and the end of the second surface 22 close to the black border area 12 to be a concave arc surface structure.

[0122] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display screen, characterized in that: The display screen includes a plurality of closely arranged display modules and a plurality of optical structures, each optical structure is arranged corresponding to one of the display modules and is arranged on one side of the light emitting surface of the display module, two adjacent display modules are arranged closely, and the optical structures on the two adjacent display modules are arranged closely; Each of the display modules comprises a display area and a black border area arranged around the display area, and the black border areas of two adjacent display modules are spliced ​​together to form a splicing seam; Each of the optical structures comprises a first surface and a second surface which are arranged opposite to each other, and the second surface of the optical structure is attached to the display module; One end of the first surface of the optical structure close to the seam is a first curved surface, the first curved surface is an outward convex curved surface structure, and the first curved surface is used to refract the light emitted from the display area of ​​the display module and distribute it to the front view area corresponding to the seam; The second surface of the optical structure has a second curved surface at one end close to the seam, and the second curved surface is a concave curved surface structure, and the light emitted from the display area of ​​the display module is reflected by the second curved surface to supplement the light of the non-normal viewing area corresponding to the seam; The second curved surface includes a third end close to the display module and a fourth end away from the display module; the distance from the horizontal plane where the fourth end is located to the horizontal plane where the third end is located is greater than or equal to half of the width of the joint and less than or equal to the thickness of the optical structure minus 1 mm; and / or, A distance between one end of the first curved surface close to the second surface and one end of the second curved surface close to the first surface is greater than or equal to 0.3 mm and less than or equal to 1 mm; and / or, The radius of the second curved surface is 2 mm-8 mm.

2. The display screen according to claim 1, characterized in that: The dimension of the orthographic projection of the first curved surface on the display module along the width direction of the seam is greater than or equal to the width of the seam and less than or equal to the width of the seam plus 5 mm, and the width of the seam is 0.88 mm-3.9 mm; and / or, The first curved surface includes a first end close to the display module and a second end away from the display module; the distance from the horizontal plane where the first end of the first curved surface is located to the horizontal plane where the second end of the first curved surface is located is less than or equal to half of the thickness of the optical structure and / or the radius of the first curved surface is greater than or equal to the width of the seam and less than or equal to the width of the seam plus 5 mm, and the width of the seam is 0.88 mm-3.9 mm; and / or, The radius of the first curved surface is 2 mm to 5 mm; and / or, The thickness of the optical structure is 3 mm-10 mm.

3. A spliced ​​display unit, characterized in that: It comprises a stacked display module and an optical structure, wherein the optical structure is arranged on one side of the light emitting surface of the display module; The display module includes a display area and a black border area arranged around the display area; Each of the optical structures comprises a first surface and a second surface which are arranged opposite to each other, and the second surface of the optical structure is attached to the display module; One end of the first surface of the optical structure close to the black border area of ​​the display module is a first curved surface, and the first curved surface is an outward convex curved surface structure, and the first curved surface is used to refract the light emitted from the display area of ​​the display module and distribute it to the front view area corresponding to the black border area; One end of the second surface of the optical structure close to the black border area of ​​the display module is a second curved surface, and the second curved surface is a concave curved surface structure. The light emitted from the display area of ​​the display module is reflected by the second curved surface to supplement the light of the non-normal viewing area corresponding to the black border area; The second curved surface includes a third end close to the display module and a fourth end away from the display module; the distance from the horizontal plane where the fourth end is located to the horizontal plane where the third end is located is greater than or equal to the width of the black border area and less than or equal to the thickness of the optical structure minus 1 mm, and the width of the black border area is 0.44 mm-1.95 mm; and / or, A distance between one end of the first curved surface close to the second surface and one end of the second curved surface close to the first surface is greater than or equal to 0.3 mm and less than or equal to 1 mm; and / or; The radius of the second curved surface is 2 mm-8 mm.

4. The splicing display unit according to claim 3, characterized in that: The dimension of the orthographic projection of the first curved surface on the display module along the width direction of the black border area is greater than or equal to twice the width of the black border area, and less than or equal to twice the width of the black border area plus 5 mm, and the width of the black border area is 0.44 mm-1.95 mm; and / or, The first curved surface includes a first end close to the display module and a second end away from the display module; the distance from the horizontal plane where the first end of the first curved surface is located to the horizontal plane where the second end of the first curved surface is located is less than or equal to half of the thickness of the optical structure; and / or, The radius of the first curved surface is greater than or equal to twice the width of the black border area, and less than or equal to twice the width of the black border area plus 5 mm, and the width of the black border area is 0.44 mm-1.95 mm; and / or, The radius of the first curved surface is 2 mm-5 mm; and / or; The thickness of the optical structure is 3 mm-10 mm.

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