CN109584731B

CN109584731B - Spliced display screen

Info

Publication number: CN109584731B
Application number: CN201811550432.4A
Authority: CN
Inventors: 唐少拓; 石振华; 郑净远; 唐国富
Original assignee: Huizhou China Star Optoelectronics Technology Co Ltd
Current assignee: Huizhou China Star Optoelectronics Technology Co Ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2021-07-06
Anticipated expiration: 2038-12-18
Also published as: CN109584731A

Abstract

The utility model provides a tiled display screen, includes two piece at least mutual display panel that splice and sets up in the apron of display panel top, and adjacent display panel's edge forms the piece in concatenation department, and the apron covers each display panel, wherein, the first surface of apron with the region that the piece corresponds is the concave surface of indent, and the concave surface is formed by the tangent combination of the cambered surface of different curvature radii. The surface of the glass cover plate corresponding to the abutted seam is designed into a curved surface formed by combining different curvature radii, so that the abutted seam can be eliminated at a positive visual angle and a large visual angle within a certain range; in addition, the integrated glass cover plate can simplify the production process and the assembly flow.

Description

Spliced display screen

Technical Field

The invention relates to the technical field of display, in particular to a spliced display screen.

Background

With the rapid development of display technologies, the requirements of people on display devices are continuously increased, and in order to realize larger-area display, the application of splicing a plurality of display panels is more and more extensive.

However, when the tiled display is adopted, due to the existence of the borders of the single-screen display panels as the tiled units, the large tiled display screen formed by the single-screen display panels has split seams which cause serious split feeling on the whole screen, the whole effect of the implemented tiled display screen is seriously affected, and the size of the seams becomes an important index for evaluating the performance of the tiled display screen. In order to reduce or even eliminate the seam as much as possible, a feasible method is to add a layer of glass cover plate on the spliced screen, and eliminate the seam through a simple peripheral structure, but most of the methods have the problems of complicated preparation and deteriorated visual angle performance at the seam.

Disclosure of Invention

The invention provides a spliced display screen, which aims to solve the technical problem that the display effect is influenced because the visual angle performance of a spliced seam is deteriorated and the spliced seam cannot be completely eliminated in a large visual angle range in the conventional spliced display screen.

In order to solve the above problems, the technical scheme provided by the invention is as follows:

the invention provides a spliced display screen, which comprises: the display panel comprises at least two display panels which are spliced with each other and a cover plate arranged above the display panels; the edges of the adjacent display panels form a splicing seam at the splicing position; the cover plate covers each display panel; the first surface of the cover plate is an inwards concave surface in an area corresponding to the splicing seam, and the concave surface is formed by tangentially combining cambered surfaces with different curvature radiuses.

In at least one embodiment of the invention, the concave surface of the cover plate covers the seam.

In at least one embodiment of the present invention, the concave surface is an axisymmetric pattern, a symmetry axis of the concave surface is parallel to a length direction of the corresponding seam, and the concave surface includes a first sub-concave surface and a second sub-concave surface that are symmetric to each other.

In at least one embodiment of the present invention, the first/second sub-concave surface comprises a first arc surface and a second arc surface that are tangent, the first arc surface being close to the symmetry axis of the concave surface.

In at least one embodiment of the present invention, the radius of curvature of the first cambered surface is 0.5-2 mm.

In at least one embodiment of the invention, the width of the orthographic projection of the first cambered surface on the display panel is 0.2-5 mm.

In at least one embodiment of the invention, the curvature radius of the second cambered surface is 6-9 mm.

In at least one embodiment of the invention, the width of the orthographic projection of the first sub concave surface/the second sub concave surface on the display panel is 4-5 mm.

In at least one embodiment of the invention, the shortest distance between the cover plate and the display panel in the thickness direction of the display panel is 0.5-3 mm.

In at least one embodiment of the present invention, the cover plate is a high transmittance glass cover plate, and the cover plate is formed in one step by an injection molding process.

The invention has the beneficial effects that: according to the spliced display screen provided by the invention, the surface of the glass cover plate corresponding to the spliced seam is designed into the curved surface formed by combining different curvature radii, so that the spliced seam can be eliminated at a positive visual angle and a large visual angle within a certain range; in addition, the integrated glass cover plate can simplify the production process and the assembly flow.

Drawings

In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a tiled display screen according to the present invention;

FIG. 2 is a schematic structural view of a concave surface of a cover plate according to the present invention;

fig. 3 is a schematic diagram of an optical imaging effect of the tiled display screen of the present invention.

Detailed Description

The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.

Aiming at the technical problem that the display is affected due to the fact that the visual angle performance of a spliced display panel at a splicing seam is deteriorated and the splicing seam cannot be completely eliminated within a large visual angle range in the existing spliced display screen, the embodiment of the invention can solve the defect.

As shown in fig. 1, the present invention provides a tiled display screen 10, where the tiled display screen 10 includes a plurality of display panels 11 tiled with each other and a cover plate 12 disposed above the display panels 11.

The display panel 11 includes a display area 112 and a non-display area 111 (frame), the non-display area 111 is disposed around the display area 112, a seam 13 is formed at a joint between edges of adjacent display panels 11, the seam 13 is composed of the frames 111 of two display panels 11 at the joint and a slit between the two frames 111, fig. 1 only shows a schematic diagram of one joint, and schematic diagrams of other joints are the same as or similar to the joint.

The display panel 11 of each piece concatenation is covered to apron 12, the first surface of apron 12 include to the concave surface 121 of apron indent, the first surface does apron 12 is close to the surface of display panel 11 one side, concave surface 121 with piece 13 corresponds the setting, the concave surface is formed by the tangent combination of cambered surface optical structure of different curvature radii, through the optical structure combination of different curvature radii, can satisfy the formation of image needs of front view angle and big visual angle simultaneously.

The number of the concave surfaces 121 on the cover plate 12 depends on the number of the seams 13, that is, a structure that one concave surface 121 is arranged in a corresponding area above each seam 13, the concave surface 121 covers the seam 13, and the concave surface 121 is used for eliminating the seam in a large angle range from a visual angle.

The concave surface 121 is an axisymmetric figure, a symmetry axis of the concave surface 121 is parallel to a length direction (extending direction) of the corresponding seam 13, and specifically, an orthogonal projection of the symmetry axis of the concave surface 121 on the display panel 11 coincides with a symmetry axis of the corresponding seam 13 in the length direction.

The concave surfaces comprise a first concave sub-surface 123 and a second concave sub-surface 122, and the first concave sub-surface 123 and the second concave sub-surface 122 are arranged symmetrically with each other.

The cover plate 12 is fixed on the display panel 11 through a support fixing structure such as a pin or a screw, and supports a certain height, and the shortest distance H between the cover plate 12 and the display panel in the thickness direction of the display panel 11 is 0.5-3 mm.

The cover plate 12 is a glass cover plate with high transmittance, the whole-surface structure of the cover plate 12 is formed in one step through an injection molding process, and compared with the case that the piece joint 13 is divided into two glass cover plates, the whole-surface structure formed in one step can simplify the manufacturing process and the assembly process.

In this embodiment, the number of the display panels 11 to be spliced with each other is 2, and the number of the splices 13 is 1.

As shown in fig. 2, in this embodiment, taking the first sub-concave surface 123 as an example, the first sub-concave surface 123 includes a first arc surface 1231 and a second arc surface 1232 that are tangent to each other, the first arc surface 1231 is close to a symmetry axis of the concave surface 121, and both the first arc surface 1231 and the second arc surface 1232 are arc surfaces.

The curvature radius R1 of the first cambered surface 1231 is 0.5-2 mm, and the width D1 of the orthographic projection of the first cambered surface 1231 on the display panel 11 is 0.2-5 mm.

The curvature radius R2 of the second arc surface 1232 is 6-9 mm, the width D2 of the orthographic projection of the first concave sub-surface 123/the second concave sub-surface 122 on the display panel 11 is 4-5 mm, that is, the sum of the widths of the orthographic projections of the first arc surface 1231 and the second arc surface 1232 on the display panel 11 is 4-5 mm, and the specific width of the concave surface 121 depends on the width of the seam 13.

As shown in fig. 3, after the light emitted from the display area 112 of the display panel 11 is refracted when the light propagates through the air medium and reaches the first surface of the cover plate 12, the light propagates through the glass medium and reaches the surface of the cover plate 12 on the side away from the display panel 11, and is refracted again, so as to display the picture.

The process the big some of angle of refraction takes place for the light of concave surface 121 department on the first surface of apron 11, with regional A on the apron 11 that the piece 13 corresponds shows the virtual image, and then eliminates the piece the regional image that becomes of correspondence outside the piece 13 is real image, if the image that becomes at regional B is real image, makes the light of big visual angle become the virtual image at big visual angle when the positive visual angle becomes real image through the combination of the optical surface of different curvatures, has satisfied the seam elimination function of big visual angle within positive visual angle and the 30 degrees simultaneously.

Has the advantages that: according to the spliced display screen provided by the invention, the surface of the glass cover plate corresponding to the spliced seam is designed into the curved surface formed by combining different curvature radii, so that the spliced seam can be eliminated at a positive visual angle and a large visual angle within a certain range; in addition, the integrated glass cover plate can simplify the production process and the assembly flow.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A tiled display screen, comprising:

the display panel comprises at least two display panels which are spliced with each other, wherein the edges of the adjacent display panels form a splicing seam at the splicing position;

the cover plate is arranged above the display panels and covers each display panel; wherein the content of the first and second substances,

the first surface of the cover plate is an inwards concave surface in an area corresponding to the abutted seam, the concave surface is formed by tangentially combining cambered surfaces with different curvature radiuses, and the first surface is the surface of the cover plate close to one side of the display panel;

the concave surface includes first sub-concave surface and the sub-concave surface of second of mutual symmetry, first sub-concave surface includes tangent first cambered surface and second cambered surface, first cambered surface is close to the symmetry axis of concave surface, first cambered surface for the cambered surface of apron indent, the second cambered surface for the cambered surface of apron evagination.

2. The tiled display screen of claim 1, wherein the concave surface of the cover plate covers the seam.

3. The tiled display screen of claim 1, wherein the recessed surface is an axisymmetric pattern, and the axis of symmetry of the recessed surface is parallel to the length direction of the corresponding tile.

4. The spliced display screen of claim 3, wherein the radius of curvature of the first cambered surface is 0.5-2 mm.

5. The spliced display screen of claim 4, wherein the width of the orthographic projection of the first cambered surface on the display panel is 0.2-5 mm.

6. The spliced display screen of claim 3, wherein the radius of curvature of the second cambered surface is 6-9 mm.

7. The spliced display screen of claim 3, wherein the width of the orthographic projection of the first sub-concave surface/the second sub-concave surface on the display panel is 4-5 mm.

8. The spliced display screen of claim 1, wherein the shortest distance between the cover plate and the display panel in the thickness direction of the display panel is 0.5-3 mm.

9. The tiled display screen of claim 1, wherein the cover plate is a high-transmittance glass cover plate that is formed in one piece by an injection molding process.