CN118248048A - Curved surface display device - Google Patents

Abstract

The application provides a curved surface display device, which comprises two first edges oppositely arranged in a first direction and two second edges oppositely arranged in a second direction, wherein the first edges and the second edges are arranged in an end-to-end mode; in the first direction, the curved display device comprises a first middle area and first peripheral areas positioned at two sides of the first middle area; the curvature of the first intermediate region is less than the curvature of the first peripheral region; in the second direction, the curved surface display device comprises a second middle area and second peripheral areas positioned at two sides of the second middle area; the curvature of the second intermediate region is less than the curvature of the second peripheral region; therefore, the curvature of the central area of the curved surface display device is smaller than that of the peripheral area, so that the curved surface display device similar to a dome is formed, the dome design has a wide 3D space visual effect, visual fatigue can be effectively relieved, and visual fatigue during watching is relieved.

Description

Curved display device

Technical Field

The present application relates to the field of display technology, and in particular to a curved display device.

Background technique

With the development of display technology, the demand for various large-size display devices is increasing day by day, and their applications in various scenarios are becoming more and more extensive. One way to realize a large-size display device is to splice multiple small-size sub-display screens to form a large-size display device. At present, the large-size display device formed after splicing is usually flat, and the screen of a flat display device is flat. When watching, the audience needs to adjust their posture and viewing angle to adapt to the screen, and watching a flat display device will cause visual fatigue.

Summary of the invention

The present application provides a curved display device to achieve curved display, thereby reducing visual fatigue during viewing.

To solve the above problems, the technical solutions provided by this application are as follows:

An embodiment of the present application provides a curved display device, comprising two first sides arranged opposite to each other in a first direction, and two second sides arranged opposite to each other in a second direction, wherein the first sides and the second sides are arranged end to end;

The first side and the second side are both curved lines, and the curvature directions of the first side and the second side are toward the back side of the curved display device;

In the first direction, the curved display device includes a first middle area and first peripheral areas located on both sides of the first middle area; the curvature of the first middle area is smaller than the curvature of the first peripheral area; the first side is located at the edge of the first peripheral area;

In the second direction, the curved display device includes a second middle area and second peripheral areas located on both sides of the second middle area; the curvature of the second middle area is smaller than the curvature of the second peripheral area; the second side is located at the edge of the second peripheral area.

In the curved display device provided in an embodiment of the present application, the first middle area has a first center line, the first center line is arranged opposite to the first side and passes through the midpoints of the two second sides, and the curvature of the first center line is smaller than the curvature of the first side; the second middle area has a second center line, the second center line is arranged opposite to the second side and passes through the midpoints of the two first sides, and the curvature of the second center line is smaller than the curvature of the second side.

In the curved display device provided in the embodiment of the present application, the length of the first side is greater than the length of the second side, and the curvature of the first side is different from the curvature of the second side.

In the curved display device provided in the embodiment of the present application, the curvature of the first side is smaller than the curvature of the second side.

In the curved display device provided in the embodiment of the present application, the curvature of the first center line is greater than the curvature of the second center line.

In the curved display device provided in the embodiment of the present application, the curvature of the curved display device gradually increases as it moves away from the first middle area, and gradually increases as it moves away from the second middle area.

In the curved display device provided in an embodiment of the present application, the curved display device includes at least two sub-display screens spliced together, each of the sub-display screens includes two first sub-edges arranged opposite to each other in the first direction, and two second sub-edges arranged opposite to each other in the second direction, the first sub-edges and the second sub-edges are arranged end to end, the first sub-edges and the second sub-edges are both curves, the bending directions of the first sub-edges and the second sub-edges are toward the back side of the curved display device, and the curvature of the first sub-edge is different from the curvature of the second sub-edge.

In the curved display device provided in the embodiment of the present application, each of the sub-display screens further includes a display area and a splicing area located on one side of the display area, the splicing areas of two adjacent sub-display screens are spliced together, and the two spliced splicing areas overlap up and down.

In the curved display device provided in the embodiment of the present application, each of the sub-display screens further includes a flexible light-emitting substrate, a polarizer arranged on the light-emitting side of the flexible light-emitting substrate, and a backplane and an auxiliary supporting layer arranged on the side of the flexible light-emitting substrate away from the polarizer.

In the curved display device provided in the embodiment of the present application, the number of the sub-display screens is 6, and in the extension direction of the first side, the three sub-display screens are spliced in sequence; in the extension direction of the second side, the two sub-display screens are spliced in sequence.

In the curved display device provided in the embodiment of the present application, the radius of curvature of the first side is 1000 mm, the radius of curvature of the second side is 600 mm, the radius of curvature of the first center line is 1500 mm, and the radius of curvature of the second center line is 3000 mm.

In the curved display device provided in the embodiment of the present application, each of the sub-display screens also includes a display area and a splicing area located on one side of the display area, the splicing areas of two adjacent sub-display screens are spliced with each other, and the two spliced splicing areas overlap each other up and down; in the extension direction of the first side, among the three sub-display screens spliced in sequence, the splicing area of the middle sub-display screen covers the splicing areas of the sub-display screens on both sides.

In the curved display device provided in the embodiment of the present application, the curved display device further includes:

A support frame, arranged on one side of the sub-display screen;

The housing is arranged on a side of the support frame away from the sub-display screen.

The beneficial effects of the present application are as follows: in the curved display device provided by the present application, the curved display device includes two first sides arranged opposite to each other in a first direction, and two second sides arranged opposite to each other in a second direction, the first side and the second side are arranged end to end; the first side and the second side are both curves, and the bending directions of the first side and the second side are toward the back side of the curved display device; in the first direction, the curved display device includes a first middle area and a first peripheral area located on both sides of the first middle area; the curvature of the first middle area is smaller than the curvature of the first peripheral area; the first side is located at the edge of the first peripheral area; in the second direction, the curved display device includes a second middle area and a second peripheral area located on both sides of the second middle area; the curvature of the second middle area is smaller than the curvature of the second peripheral area; the second side is located at the edge of the second peripheral area; in this way, the curvature of the central area of the curved display device can be made smaller than the curvature of the surrounding areas, so as to form a curved display device similar to a "dome", and the dome design has a wide 3D space visual effect, which can effectively relieve visual fatigue, thereby reducing viewing angle fatigue during viewing.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG. 1 is a schematic diagram of a planar structure of a curved display device provided in an embodiment of the present application.

FIG. 2 is another schematic diagram of the planar structure of the curved display device provided in an embodiment of the present application.

Fig. 3 is a schematic diagram of a cross-sectional structure along the M-M' direction in Fig. 2.

FIG. 4 is a schematic diagram of another planar structure of the curved display device provided in an embodiment of the present application.

FIG. 5 is a schematic diagram of a planar structure of the curved display device in FIG. 4 before being bent.

FIG6 is a schematic diagram of the disassembly of the curved display device provided in an embodiment of the present application and a schematic diagram of an application scenario of the curved display device.

Detailed ways

The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be implemented in. The directional terms mentioned in the present application, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present application, rather than to limit the present application. In the figures, units with similar structures are represented by the same reference numerals. In the accompanying drawings, the thickness of some layers and regions is exaggerated for clear understanding and ease of description. That is, the size and thickness of each component shown in the drawings are arbitrarily shown, but the present application is not limited to this.

Please refer to FIG. 1, which is a schematic diagram of a planar structure of a curved display device provided in an embodiment of the present application. The curved display device 100 includes two first edges 1 arranged opposite to each other in a first direction X, and two second edges 2 arranged opposite to each other in a second direction Y, wherein the first direction X is perpendicular to the second direction Y. The first edge 1 and the second edge 2 are arranged end to end, that is, each of the first edges 1 is connected between two of the second edges 2, and each of the second edges 2 is connected between two of the first edges 1, and the two first edges 1 and the two second edges 2 are connected end to end in sequence to form the outer contour of the curved display device 100. Wherein, the first edge 1 and the second edge 2 are both curves, so that the edge areas of the curved display device 100 are all curved surfaces, and the bending directions of the first edge 1 and the second edge 2 are toward the back side of the curved display device 100.

In the first direction X, the curved display device 100 includes a first middle area MD1 and first peripheral areas SD1 located on both sides of the first middle area MD1. The curvature of the first middle area MD1 is smaller than the curvature of the first peripheral area SD1. The first side 1 is located at the edge of the first peripheral area SD1. Optionally, the two first peripheral areas SD1 are symmetrically arranged about the first middle area MD1. In this case, the curvatures of the two first peripheral areas SD1 are the same, for example, the curvature of the first middle area MD1 is R1500-R1350, and the curvature of the first peripheral area SD1 is R1350-R1000. Among them, the curvature of the first middle area MD1 and the curvature of the first peripheral area SD1 refer to the average values of the curvatures at various locations on the first middle area MD1 and the first peripheral area SD1, respectively. In addition, the curvature value of the example in this embodiment refers to the curvature corresponding to the curve with the value as the curvature radius. The smaller the value, the greater the corresponding curvature, and the corresponding degree of curvature is also greater. For example, the curvature R1500 of the first middle area MD1 refers to the curvature corresponding to a curve with a curvature radius of 1500 mm.

In the second direction Y, the curved display device 100 includes a second middle area MD2 and a second peripheral area SD2 located on both sides of the second middle area MD2; the curvature of the second middle area MD2 is smaller than the curvature of the second peripheral area SD2; the second side 2 is located at the edge of the second peripheral area SD2. Optionally, the two second peripheral areas SD2 are symmetrically arranged about the second middle area MD2. In this case, the curvatures of the two second peripheral areas SD2 are the same, for example, the curvature of the second middle area MD2 is R3000-R2200, and the curvature of the second peripheral area SD2 is R2200-R600. Among them, the curvature of the second middle area MD2 and the curvature of the second peripheral area SD2 refer to the average value of the curvatures at various locations on the second middle area MD2 and the second peripheral area SD2, respectively. In addition, the "curvature of some areas" described in the following text refers to the average value of the curvatures at various locations in the area, and will not be explained one by one later.

In this way, the curvature of the central area of the curved display device 100 can be made smaller than the curvature of the surrounding areas to form a curved display device 100 similar to a "dome". The dome design has a wide 3D space visual effect, which can effectively relieve visual fatigue, thereby reducing viewing angle fatigue during viewing.

In one embodiment, the curved display device 100 includes four corner regions, and the curvatures of the four corner regions are the same, so that the same viewing effect can be achieved at different viewing angles, thereby further reducing viewing fatigue during viewing. The corner region of the curved display device 100 refers to the region where the adjacent first side 1 and second side 2 are connected.

In one embodiment, the curvature of the curved display device 100 gradually increases as it moves away from the first middle area MD1, and gradually increases as it moves away from the second middle area MD2. In other words, the curvature of the curved display device 100 gradually increases from the center to the periphery, so that the curvature of the curved display device 100 changes evenly, which better reduces viewing fatigue during viewing.

Continuing to refer to FIG. 1 , the first middle region MD1 has a first center line 3, the first center line 3 is arranged opposite to the first side 1, and passes through the midpoints of the two second sides 2, the curvature of the first center line 3 is smaller than the curvature of the first side 1, and the extension direction of the first center line 3 is the same as the extension direction of the first side 1. The curvature of the first center line 3 refers to the average value of the curvatures of each point on the first center line 3, and correspondingly, the curvature of the first side 1 refers to the average value of the curvatures of each point on the first side 1. In addition, the "curvatures of some lines or sides" described in the following text all refer to the average value of the curvatures of each point on the line or side, and will not be explained one by one in the following.

Furthermore, the second middle area MD2 has a second center line 4, which is arranged opposite to the second edge 2 and passes through the midpoints of the two first edges 1. The curvature of the second center line 4 is smaller than the curvature of the second edge 2, and the extension direction of the second center line 4 is the same as the extension direction of the second edge 2. In this way, the curvature of the central area of the curved display device 100 can be smaller than the curvature of the surrounding area, so as to form a curved display device 100 similar to a "dome", and the dome design has a wide 3D space visual effect, which can effectively relieve visual fatigue, thereby reducing viewing fatigue during viewing.

It should be noted that the first center line 3 refers to the line connecting the midpoints of multiple curves on the display surface of the curved display device 100 that are parallel to the second side 2. The display surface of the curved display device 100 refers to the surface of one side of the curved display device 100 that displays the screen, that is, the surface of the light-emitting side of the curved display device 100, that is, the surface of the side of the curved display device 100 facing the viewer. The back side of the curved display device 100 refers to the side away from the display surface. The first center line 3 also passes through the midpoint of the second side 2, and the first center line 3 divides the display surface of the curved display device 100 into two substantially identical parts. Correspondingly, the second center line 4 refers to the line connecting the midpoints of multiple curves on the display surface of the curved display device 100 that are parallel to the first side 1, and the second center line 4 also passes through the midpoint of the first side 1, and the second center line 4 divides the display surface of the curved display device 100 into two substantially identical parts.

Optionally, the length of the first side 1 is greater than the length of the second side 2, that is, the first side 1 is the long side of the curved display device 100, and the second side 2 is the short side of the curved display device 100. The curvature of the first side 1 is different from the curvature of the second side 2, for example, the curvature of the first side 1 is smaller than the curvature of the second side 2, so that the curvature of the area where the long side of the curved display device 100 is located is smaller than the curvature of the area where the short side of the curved display device 100 is located, so as to further reduce viewing angle fatigue during viewing.

Furthermore, the curvature of the first center line 3 is greater than the curvature of the second center line 4, so that the degree of curvature of the curved display device 100 in the extension direction of the first edge 1 is greater than the degree of curvature of the curved display device 100 in the extension direction of the second edge 2, so as to further reduce viewing fatigue during viewing.

In one embodiment, referring to FIGS. 1 to 3, FIG. 2 is another schematic diagram of a planar structure of a curved display device provided in an embodiment of the present application, and FIG. 3 is a schematic diagram of a cross-sectional structure along the M-M' direction in FIG. 2. Different from the above-mentioned embodiment, the curved display device 100 includes at least two sub-display screens 10 spliced to each other, each of the sub-display screens 10 includes two first sub-edges 11 arranged opposite to each other in the first direction X, and two second sub-edges 12 arranged opposite to each other in the second direction Y, the first sub-edges 11 and the second sub-edges 12 are arranged end to end, the first sub-edges 11 and the second sub-edges 12 are both curves, and the bending directions of the first sub-edges 11 and the second sub-edges 12 are toward the back side of the curved display device 100. The extension direction of the first sub-edge 11 is the same as the extension direction of the first edge 1, the extension direction of the second sub-edge 12 is the same as the extension direction of the second edge 2, and the curvature of the first sub-edge 11 is different from the curvature of the second sub-edge 12.

Specifically, with reference to FIG. 2 , this embodiment is described by taking the curved display device 100 including two sub-display screens 10 spliced with each other as an example. Each of the sub-display screens 10 includes two first sub-edges 11 arranged opposite to each other in the first direction X, and two second sub-edges 12 arranged opposite to each other in the second direction Y. Each of the first sub-edges 11 is connected between two of the second sub-edges 12, and each of the second sub-edges 12 is connected between two of the first sub-edges 11. The two first sub-edges 11 and the two second sub-edges 12 are connected end to end in sequence to form the outer contour of the sub-display screen 10. The two opposite second sub-edges 12 in the two sub-display screens 10 are spliced with each other, and the two second sub-edges 12 not participating in the splicing are the second side 2 of the curved display device 100, and every two adjacent first sub-edges 11 constitute the first side 1 of the curved display device 100. The curvature of the first sub-edge 11 is the same as that of the first side 1, and the curvature of the second sub-edge 12 is the same as that of the second side 2.

In one embodiment, each of the sub-display screens 10 further includes a display area AA and a splicing area PA located on one side of the display area AA, and the splicing areas PA of two adjacent sub-display screens 10 are spliced with each other, and the two spliced splicing areas PA overlap up and down to reduce the splicing seam of the curved display device 100. That is, the two spliced sub-display screens 10 adopt an overlapping design, so that the splicing area PA of one sub-display screen 10 covers the splicing area PA of another sub-display screen 10, so that the two splicing areas PA overlap up and down, thereby reducing the position occupied by the splicing area PA, so as to reduce the splicing seam. For example, as shown in FIG. 2, the splicing area PA of the right sub-display screen 10 covers the splicing area PA of the left sub-display screen 10, and the second sub-edge 12 of the left sub-display screen 10 is covered by the right sub-display screen 10, so the second sub-edge 12 of the left sub-display screen 10 participating in the splicing is indicated by a dotted line. The area between the two second sub-edges 12 that are spliced together is the splicing area PA, and the second center line 4 is located in the middle of the splicing area PA.

Optionally, referring to FIG. 3 , each of the sub-display screens 10 further includes a flexible light-emitting substrate 13, a polarizer 14 disposed on the light-emitting side of the flexible light-emitting substrate 13, and a backplane 15 and an auxiliary support layer 16 disposed on the side of the flexible light-emitting substrate 13 away from the polarizer 14. The auxiliary support layer 16 is located on the side of the backplane 15 away from the flexible light-emitting substrate 13, and the auxiliary support layer 16 includes stainless steel (such as SUS), etc., and the backplane 15 includes a PET (Poly ethyleneterephthalate) substrate, etc. The auxiliary support layer 16 can assist the backplane 15 in supporting the flexible light-emitting substrate 13 and can maintain the curved shape of the flexible light-emitting substrate 13.

The flexible light-emitting substrate 13 includes one of an organic light emitting diode (OLED) substrate and a micro light emitting diode (Mini/Micro Light Emitting Diode, Mini/-LED/MicroLED, collectively referred to as MLED) substrate. In this embodiment, the curved display device 100 is an organic light emitting diode substrate as an example, and the flexible light-emitting substrate 13 may include a substrate, a driving circuit layer arranged on one side of the substrate, a light-emitting functional layer arranged on a side of the driving circuit layer away from the substrate, and an encapsulation layer arranged on a side of the light-emitting functional layer away from the driving circuit layer. It should be noted that the specific structure of the flexible light-emitting substrate 13 is only an example in this embodiment, but the present application is not limited thereto.

In one embodiment, referring to Figures 1 to 5, Figure 4 is another schematic diagram of a planar structure of a curved display device provided in an embodiment of the present application, and Figure 5 is a schematic diagram of a planar structure of the curved display device before being bent in Figure 4. Different from the above embodiment, the number of the sub-display screens 10 is 6, and in the extension direction of the first side 1, three of the sub-display screens 10 are spliced in sequence; in the extension direction of the second side 2, two of the sub-display screens 10 are spliced in sequence.

Specifically, referring to FIG. 4 , the curved display device 100 includes 6 sub-display screens 10, and each two adjacent sub-display screens 10 are spliced together. In the extension direction of the first side 1, three sub-display screens 10 are spliced in sequence, wherein the two opposite second sub-sides 12 of two adjacent sub-display screens 10 are spliced together, and the first sub-sides 11 of the three sub-display screens 10 constitute the first side 1 of the curved display device 100, and the area of the first sub-side 11 of each sub-display screen 10 is equal to the curvature of the first side 1. In the extension direction of the second side 2, two sub-display screens 10 are spliced in sequence, wherein the two opposite first sub-sides 11 of two adjacent sub-display screens 10 are spliced together, and the second sub-sides 12 of the two sub-display screens 10 constitute the second side 2 of the curved display device 100, and the area of the second sub-side 12 of each sub-display screen 10 is equal to the curvature of the second side 2.

Optionally, the curvature of the first side 1 is R1000, the curvature of the second side 2 is R600, the curvature of the first center line 3 is R1500, and the curvature of the second center line 4 is R3000, that is, the curvature radius of the first side 1 is 1000 mm, the curvature radius of the second side 2 is 600 mm, the curvature radius of the first center line 3 is 1500 mm, and the curvature radius of the second center line 4 is 3000 mm. It should be noted that the curvature value of the example in this embodiment refers to the curvature corresponding to the curve with the value as the curvature radius. The smaller the value, the greater the corresponding curvature, and the corresponding degree of bending is also greater. For example, the curvature R1000 of the first side 1 refers to the curvature corresponding to a curve with a curvature radius of 1000 mm, and correspondingly, the curvature R600 of the second side 2 refers to the curvature corresponding to a curve with a curvature radius of 600 mm, the curvature R3000 of the second center line 4 refers to the curvature corresponding to a curve with a curvature radius of 3000 mm, and the curvature R3000 of the second center line 4 refers to the curvature corresponding to a curve with a curvature radius of 1000 mm.

5 , each of the sub-display screens 10 further includes a display area AA and a splicing area PA located on one side of the display area AA, and the splicing areas PA of two adjacent sub-display screens 10 are spliced together, and the two spliced splicing areas PA overlap each other. In the extension direction of the first side 1, among the three sub-display screens 10 spliced in sequence, the splicing area PA of the middle sub-display screen 10 covers the splicing areas PA of the sub-display screens 10 on both sides.

Specifically, for ease of description, this embodiment defines six sub-display screens 10 as a first sub-display screen 10-1, a second sub-display screen 10-2, a third sub-display screen 10-3, a fourth sub-display screen 10-4, a fifth sub-display screen 10-5, and a sixth sub-display screen 10-6. The first sub-display screen 10-1, the second sub-display screen 10-2, and the third sub-display screen 10-3 are sequentially spliced in the extension direction of the first side 1, and the first sub-display screen 10-1 and the fourth sub-display screen 10-4 are spliced with each other in the extension direction of the second side 2.

The stitching area PA where the second sub-edge 12-2 of the second sub-display screen 10-2 is located covers the stitching area PA where the second sub-edge 12-1 of the first sub-display screen 10-1 is located and the stitching area PA where the second sub-edge 12-3 of the third sub-display screen 10-3 is located. The stitching area PA where the second sub-edge 12-5 of the fifth sub-display screen 10-5 is located covers the stitching area PA where the second sub-edge 12-4 of the fourth sub-display screen 10-4 is located and the stitching area PA where the second sub-edge 12-6 of the sixth sub-display screen 10-6 is located. The stitching area PA where the first sub-edge 11-1 of the first sub-display screen 10-1 is located covers the stitching area PA where the second sub-edge 11-1 of the fourth sub-display screen 10-4 is located. On the splicing area PA where the first sub-edge 11-4 of the display screen 10-4 is located, the splicing area PA where the first sub-edge 11-2 of the second sub-display screen 10-2 is located covers the splicing area PA where the first sub-edge 11-5 of the fifth sub-display screen 10-5 is located, and the splicing area PA where the first sub-edge 11-3 of the third sub-display screen 10-3 is located covers the splicing area PA where the first sub-edge 11-6 of the sixth sub-display screen 10-6 is located, that is, the splicing area PA of the middle sub-display screen 10 is used to cover the splicing areas PA of the left and right sub-display screens 10, and the splicing area PA of the upper sub-display screen 10 covers the splicing area PA of the lower sub-display screen 10, so as to better reduce the splicing seam.

Optionally, each of the sub-display screens 10 may further include a source driving circuit 20, and the source driving circuit 20 is disposed on an edge of the sub-display screen 10 that is not involved in the splicing, so as to further reduce the splicing seam.

In addition, it should be noted that the number of the sub-display screens 10 included in the curved display device 100 of the present application is not limited to the example of the embodiment of the present application. For example, the number of the sub-display screens 10 included in the curved display device 100 of the present application may also be 4, 8, 9, 10, etc. Moreover, when the number of the sub-display screens 10 included in the curved display device 100 is large, such as 4, 6, 8, etc., the inkjet printing process compatible with OLED can realize an ultra-large-sized curved display device 100.

In one embodiment, referring to FIGS. 1 to 6, FIG. 6 is a schematic diagram of the disassembly of the curved display device provided in the embodiment of the present application and a schematic diagram of the application scenario of the curved display device. Referring to FIG. 6, the curved display device 100 also includes a support frame 30 and a shell 40. The support frame 30 is arranged on one side of the sub-display screen 10, for supporting the sub-display screen 10 and keeping the sub-display screen 10 in a curved shape. The shell 40 is arranged on the side of the support frame 30 away from the sub-display screen 10, and the shell 40 and the support frame 30 are both located on the back side of the sub-display screen 10, that is, on the side away from the display surface of the sub-display screen 10. The shell 40 is used to accommodate and protect the sub-display screen 10. Of course, the curved display device 100 may also include a controller 50, which is arranged between the support frame 30 and the shell 40, and is electrically connected to the sub-display screen 10, for providing a control signal to the sub-display screen 10.

Optionally, the curved display device 100 may be a large-sized electronic device with a display function, such as a television or a billboard. When the curved display device 100 is a television, the curved display device 100 may be fixed on a fixing platform 200, such as a wall. Optionally, the curved display device 100 may be fixed on the fixing platform 200 by a fixing bracket 300.

According to the above embodiments, it can be seen that:

The present application provides a curved display device and a curved display device, wherein the curved display device includes two first sides arranged opposite to each other in a first direction, and two second sides arranged opposite to each other in a second direction, wherein the first side and the second side are arranged end to end; the first side and the second side are both curves, and the bending directions of the first side and the second side are toward the back side of the curved display device; in the first direction, the curved display device includes a first middle area and first peripheral areas located on both sides of the first middle area; the curvature of the first middle area is smaller than the curvature of the first peripheral area; the first side is located at the edge of the first peripheral area; in the second direction, the curved display device includes a second middle area and second peripheral areas located on both sides of the second middle area; the curvature of the second middle area is smaller than the curvature of the second peripheral area; the second side is located at the edge of the second peripheral area, so that the curvature of the central area of the curved display device can be made smaller than the curvature of the surrounding areas, so as to form a curved display device similar to a "dome", and the dome design has a wide 3D space visual effect, which can effectively relieve visual fatigue, thereby reducing viewing angle fatigue during viewing.

In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

The above is a detailed introduction to the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core idea of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims (13)

1. The curved surface display device is characterized by comprising two first edges which are oppositely arranged in a first direction and two second edges which are oppositely arranged in a second direction, wherein the first edges and the second edges are arranged in an end-to-end mode;

the first side and the second side are curved, and the bending directions of the first side and the second side face the back side of the curved surface display device;

In the first direction, the curved surface display device comprises a first middle area and first peripheral areas positioned at two sides of the first middle area; the curvature of the first intermediate region is less than the curvature of the first peripheral region; the first edge is positioned at the edge of the first peripheral area;

In the second direction, the curved surface display device comprises a second middle area and second peripheral areas positioned at two sides of the second middle area; the curvature of the second intermediate region is less than the curvature of the second peripheral region; the second edge is located at an edge of the second peripheral region.

2. The curved display device of claim 1, wherein said first intermediate region has a first centerline, said first centerline being disposed opposite said first edge and passing through a midpoint of two of said second edges, said first centerline having a curvature that is less than a curvature of said first edge; the second middle area is provided with a second central line, the second central line is opposite to the second edge and passes through the middle points of the two first edges, and the curvature of the second central line is smaller than that of the second edge.

3. The curved display device of claim 2, wherein the first edge has a greater side length than the second edge, and wherein the curvature of the first edge is different from the curvature of the second edge.

4. A curved display device as claimed in claim 3 wherein the curvature of the first edge is less than the curvature of the second edge.

5. The curved display device of claim 3, wherein the curvature of the first centerline is greater than the curvature of the second centerline.

6. The curved display device of claim 1, wherein the curvature of the curved display device increases progressively with distance from the first intermediate region and increases progressively with distance from the second intermediate region.

7. The curved surface display device according to any one of claims 2 to 6, wherein the curved surface display device comprises at least two sub-display screens spliced with each other, each sub-display screen comprises two first sub-edges arranged opposite to each other in the first direction and two second sub-edges arranged opposite to each other in the second direction, the first sub-edges and the second sub-edges are arranged end to end, the first sub-edges and the second sub-edges are curved, the curved directions of the first sub-edges and the second sub-edges are toward the back side of the curved surface display device, and the curvature of the first sub-edges is different from the curvature of the second sub-edges.

8. The curved display device of claim 7, wherein each of said sub-displays further comprises a display area and a stitching area located on one side of said display area, wherein the stitching areas of two adjacent sub-displays are stitched to each other, and wherein the two stitching areas are superimposed one on top of the other.

9. The curved display device of claim 7, wherein each of said sub-displays further comprises a flexible light-emitting substrate, a polarizer disposed on a light-emitting side of said flexible light-emitting substrate, and a back plate and an auxiliary support layer disposed on a side of said flexible light-emitting substrate facing away from said polarizer.

10. The curved surface display device according to claim 7, wherein the number of the sub-display screens is 6, and three sub-display screens are sequentially spliced in the extending direction of the first edge; and in the extending direction of the second side, the two sub display screens are spliced in sequence.

11. The curved display device of claim 10, wherein the radius of curvature of the first edge is 1000 millimeters, the radius of curvature of the second edge is 600 millimeters, the radius of curvature of the first centerline is 1500 millimeters, and the radius of curvature of the second centerline is 3000 millimeters.

12. The curved surface display device according to claim 10, wherein each of said sub-displays further comprises a display area and a stitching area located at one side of said display area, the stitching areas of two adjacent sub-displays are stitched to each other, and the two stitching areas are overlapped with each other;

And in the three sub-display screens spliced in sequence in the extending direction of the first edge, the splicing area of the middle sub-display screen is covered on the splicing areas of the sub-display screens at the two sides.

13. The curved display device of claim 7, further comprising:

the support frame is arranged at one side of the sub display screen; and

The shell is arranged on one side, far away from the sub-display screen, of the supporting frame.