Display device

Abstract

The present application provides a display device. The display device includes a base, a display panel and a plurality of top elevations. The display panel is disposed on the base. The display panel has a back surface with a central region and a peripheral region closer to a side edge of the display panel than the central region. The shortest distance between the central region and the base is greater than the shortest distance between the peripheral region and the base. At least one top elevation is disposed between the base and the back surface and corresponds to the central region so that a central portion of the display panel is raised relative to the side edge to reduce the likelihood of warping of the side edge.

Description

Technical Field

[0001] This invention relates to a display device; more specifically, it relates to a display device that enhances the quality of spliced ​​display images. Background Technology

[0002] With the continuous advancement of display technology, the maturity of various display panels is also increasing. Whether it's liquid crystal displays, organic light-emitting diode (OLED) displays, or micro-LED displays, these technologies have all undergone long-term development. However, in the development of large-size display technology, besides using single large-size panels, employing panel splicing to create large-size display devices is currently one of the mainstream technological trends.

[0003] However, after prolonged use, large-size display devices composed of spliced ​​panels may experience warping at the edges of each spliced ​​panel unit due to factors such as the manufacturing process of the display panels, the continued curing of the adhesive materials, and the hardness of the adhesive materials. Warped edges can cause light leakage, resulting in a decline in the quality of the image in both bright and dark states, thus affecting the user experience. Furthermore, the warped edges may also be noticeable to the user due to protrusions, affecting the overall appearance of the display device. Summary of the Invention

[0004] The purpose of this invention is to provide a display device to solve at least one of the above-mentioned problems.

[0005] To address the aforementioned problems, an embodiment of the present invention provides a display device comprising a base and a display panel disposed on the base, wherein the display panel has a back surface, the back surface having a central region and a peripheral region closer to the side of the display panel than the central region, the shortest distance between the central region and the base being greater than the shortest distance between the peripheral region and the base; and at least one lifting member disposed between the base and the back surface, corresponding to the central region.

[0006] Another embodiment of the present invention provides a display device, which includes a base, a first display panel disposed on the base, and a second display panel disposed on the base, wherein a first side of the first display panel and a second side of the second display panel abut against each other, and the central portions of the first display panel and the second display panel are respectively raised relative to the base than the first side and the second side.

[0007] Another embodiment of the present invention provides a display device, including a base, a first display panel disposed on the base, and a second display panel disposed on the base, wherein a first side of the first display panel and a second side of the second display panel abut against each other, and the portions of the first display panel and the second display panel near the first side and the second side respectively combine to form a groove extending along the first side and the second side and being wider at the top and narrower at the bottom.

[0008] The beneficial effects of the present invention are that the display device provided according to the various embodiments of the present invention can improve the quality of bright and dark images, reduce the visibility of the edges and splicing lines of the display panel, thereby enhancing the user's viewing experience and the overall aesthetic appearance. Attached Figure Description

[0009] Figure 1 This is an exploded schematic diagram of a display device according to an embodiment of the present invention.

[0010] Figure 2 This is a cross-sectional view of a display device according to another embodiment of the present invention.

[0011] Figures 3A to 3C Top view of different variations of the back of the display panel.

[0012] Figure 4A and Figure 4B Schematic diagrams of different embodiments for the location of the central area.

[0013] Figure 5A and Figure 5B This is a cross-sectional view of another embodiment of the display device.

[0014] Figure 6 This is a cross-sectional view of another embodiment of the display device.

[0015] Figure 7 This is a cross-sectional view of another embodiment of the display device.

[0016] The attached figures are labeled as follows:

[0017] 100 display devices

[0018] 110 Display Panel

[0019] 111 Functional Layer

[0020] 112 Optical Layer

[0021] 113 Central Area

[0022] 115 Surrounding Area

[0023] 119 Back

[0024] 120 base

[0025] 140, 141, 142 Top-mounted components

[0026] 143 First Connector

[0027] 144 Second Connector

[0028] 145 support point

[0029] 146 Elastic materials

[0030] 210 Long side

[0031] 220 Short side

[0032] 300 Assembly Components

[0033] 500 connectors

[0034] 610 First Display Panel

[0035] 611 First side

[0036] 613 First end face

[0037] 620 Second Display Panel

[0038] 622 Second side

[0039] 700 Groove Detailed Implementation

[0040] Various embodiments will be described below, and those skilled in the art should readily understand the spirit and principles of the invention by referring to the description and accompanying drawings. However, while specific embodiments will be described in detail herein, these embodiments are merely illustrative and are not intended to be limiting or exhaustive in any respect. Therefore, various changes and modifications to the invention will be readily apparent and easily achievable by those skilled in the art without departing from the spirit and principles of the invention.

[0041] In the accompanying drawings, the thicknesses of layers, films, panels, regions, etc., are enlarged for clarity. Throughout the specification, the same element symbols denote the same elements. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected" to another element, it may be directly on or connected to the other element, or intermediate elements may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected" to another element, no intermediate elements are present. As used herein, "connection" can refer to a physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may mean that other elements exist between the two elements.

[0042] The terminology used herein is for the purpose of describing particular embodiments only and is not restrictive. As used herein, unless the content clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to include multiple forms, including “at least one.” “Or” means “and / or.” As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. It should also be understood that, when used in this specification, the terms “comprising” and / or “including” specify the presence or addition of the stated features, areas, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, areas, integrals, steps, operations, elements, components, and / or combinations thereof.

[0043] This document describes exemplary embodiments with reference to cross-sectional views, which are schematic diagrams of idealized embodiments. Therefore, variations in shape as a result of, for example, manufacturing techniques and / or tolerances, are contemplated. Consequently, the embodiments described herein should not be construed as limited to the specific shapes of the regions shown herein, but rather include, for example, shape deviations caused by manufacturing processes. For example, regions shown or described as flat may generally have rough and / or non-linear characteristics. Furthermore, acute angles shown may be rounded. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to show the precise shapes of the regions, nor are they intended to limit the claims.

[0044] like Figure 1 As shown, in this embodiment, the display device 100 includes a base 120, a display panel 110, and a lifting member 140. The display panel 110 is disposed on the base 120, while the lifting member 140 is disposed between the base 120 and the display panel 110 to lift the central portion of the display panel 110. Thus, the central portion of the display panel 110 can protrude from its surrounding edges, causing the outer surface (e.g., the display surface) of the display panel 110 to bulge and form an outwardly convex arch, such as a slightly convex turtle shell shape. In this embodiment, the base 120 can be a light box for assembling and splicing the display device 100; furthermore, this embodiment further includes an assembly 300 (submount), on which the display panel 110 is disposed, and then disposed on the base 120 via the assembly 300. The display panel 110 is preferably a micro-light-emitting diode display panel, but it can also be an organic light-emitting diode display panel, a liquid crystal display panel, or other types of display panels. This design allows multiple display panels 110 to be spliced ​​together to form a large display.

[0045] Figure 2The following description uses a single display panel 110 as an example. In this embodiment, the display panel 110 can also be directly connected to the base 120, without being indirectly assembled to the base 120 via the assembly 300. The display panel 110 has a back surface 119, which has a central area 113 and a peripheral area 115 closer to the side of the display panel 110 than the central area 113. The shortest distance between the central area 113 and the base 120 is greater than the shortest distance between the peripheral area 115 and the base 120. In this embodiment, the end of the peripheral area 115 is the edge of the display panel 110, which is connected to the base 120; therefore, the shortest distance between them is 0. Furthermore, when the side of the base 120 facing the display panel 110 is not a flat surface, such as when the surface of the base 120 is provided with an assembly mechanism or side wall, a virtual reference surface can be formed by taking the most protruding point or the most recessed point of the base 120 relative to the display panel 110 as a reference point, and then the distance between the base 120 and the central area 113 and the peripheral area 115 of the display device 110 can be measured based on this virtual reference surface.

[0046] like Figure 1 and Figure 2 As shown, the display device may include multiple connectors 500. Connectors 500 are disposed on the base 120 or assembly 300 to connect and position the back surface 119 of the display panel 110 to the upper surface of the base 120 or assembly 300. In this embodiment, the connector 500 may include a strong magnet and an iron sheet, respectively disposed on the base 120 / assembly 300 and the display panel 110, to position the display device 110 and the base 120 / assembly 300 by magnetic force. However, in other embodiments, the connector 500 may also be a locking screw, achieving the connection effect by locking. Furthermore, in this embodiment, the connector 500 is embedded in the surface of the base 120; however, in other embodiments, the connector 500 may also protrude from the surface of the base 120, thereby increasing the distance between the peripheral area 115 of the display panel 110 and the base 120.

[0047] The position of the lifting member 140 corresponds to the central area 113, for example, it can directly or indirectly abut against the central area 113; the other end of the lifting member 140 can be directly or indirectly connected to the base 120. In one embodiment, the distance between the central area 113 of the display panel 110 and the substrate 110 can be within 200 μm, while the distance between the peripheral area 115 and the substrate 110 can be within 50 μm. Thus, the central area 113 of the display panel 110 can be raised relative to the peripheral area, so as to reduce the occurrence of situations where the side of the display panel 110 is warped, affecting the product appearance and viewing quality.

[0048] The lifting member 140 may be a column made of an elastic material, such as a rubber column. In one embodiment, the Shore A hardness of the lifting member 140 is 50 ± 5; while in another embodiment, the compression of the lifting member 140 may be approximately 5%. By setting the lifting member 140, the shortest distance between the display panel's center area and the base can be adjusted to be greater than the shortest distance between the peripheral area and the base, and scratches on the related circuit traces behind the display panel can be avoided, thus preventing short circuits. In different embodiments, the lifting member 140 may also be an adjusting screw, allowing adjustment of its extended length relative to the base 120 or the display panel 110.

[0049] like Figures 3A to 3C As shown, the cross-sectional shape of the top member 140 can be rectangular, circular, or polygonal. Furthermore, the location where the top member 140 contacts the back surface 119 of the display panel 110 is preferably a location on the back surface 119 where no circuit components are located, to reduce the chance of circuit problems. Figure 3A and Figure 3C In one embodiment, a single top member 140 is provided for each display panel 110; while Figure 3B In the illustrated embodiment, two top-mounting components 140 are provided and arranged side by side along the long side of the display panel 110. In other words, the number of top-mounting components 140 is not limited to one.

[0050] like Figure 2 As shown, the display panel 110 may include a functional layer 111 disposed on one side of the light emission direction. The functional layer 111 may have structures such as anti-glare low-reflection structure (AGAR), low-reflection (AR), low-reflection (AGLR), and anti-glare (AG). The display panel 110 may also have an optical layer 112, such as a polarizing material or a spectral absorption material. The polarizing material may be a polarizer or a phase shifter. In one embodiment, the optical layer 112 with the polarizing material has a transmittance of 40% to 60% in the light emission direction. In another embodiment, the optical layer 112 with the spectral absorption material has a transmittance of 20% to 70% in the light emission direction. Through the above-described configuration, the overall blackness of the display panel 110 can be increased; relatively speaking, the reduction in warpage caused by the bulge in the central area 113 of the display panel 110 has a greater effect on improving viewing quality.

[0051] like Figure 4A As shown, the back surface 119 of the display panel 110 is rectangular, and the central area 113 is located within a range of 42-58% of the length of the shortened side 220 from the long side 210 and 44-56% of the length of the long side 210 from the short side 220. In other words, the area of ​​the back surface 119 that the top member 140 can connect to or abut against is the middle section of the short side 220 (42-58%) and the middle section of the long side 210 (44-56%). In another embodiment, as... Figure 4B As shown, when the number of top-mounted components 140 is singular, the best effect is achieved when the central area 113 is located within 20% of the middle section of the back panel 110, that is, within a range of 10% outward from the center point of the back panel 119 in different directions. If the number of top-mounted components 140 is multiple, or if the display panel 110 cannot make room for the top-mounted components 140 to connect or contact due to the placement of components or other wiring on the back panel 119, the position of the central area 113 can be within 40% of the middle section of the width of the back panel 110, that is, within a range of 20% outward from the center point of the back panel 119 in different directions, which also achieves a good effect. The aforementioned "width" preferably includes the widest cross-sectional width among all cross-sections of the back panel 110 or the cross-sectional width passing through the centroid, but is not limited to this.

[0052] exist Figure 5A In the illustrated embodiment, the display device has an adjacent first display panel 610 and a second display panel 620. The first display panel 610 and the second display panel 620 are arranged side by side on the base 120, and the first side 611 of the first display panel 610 and the second side 622 of the second display panel abut against each other. Figure 5A As shown, the central portions of the first display panel 610 and the second display panel 620 are raised relative to the base 120 by the first side edge 611 and the second side edge 622, respectively. In this embodiment, the central portions of the first display panel 610 and the second display panel 620 are raised by the provision of the lifting members 141 and 142; however, in other embodiments, other methods, such as pressing or magnetic attraction, can also be used to raise the central portions of the first display panel 610 and the second display panel 620. Furthermore, as... Figure 5A As shown, the portions of the first display panel 610 and the second display panel 620 near the first side 611 and the second side 622, respectively, combine to form a groove 700 that extends along the directions of the first side 611 and the second side 622 (i.e., perpendicular to the paper surface) and is wider at the top and narrower at the bottom. When multiple display panels are arranged in a matrix, the groove 700 will be distributed in multiple rows and columns. This reduces the occurrence of viewing quality issues caused by outward warping of the first side 611 of the first display panel 610 and the second side 622 of the second display panel 620.

[0053] like Figure 5BAs shown, the first side 611 of the first display panel 610 has a first end face 613, which is perpendicular to the back surface 119. The first end face 613 is inclined relative to the base 120 in the direction opposite to the image display direction of the first display panel 610 (i.e., the opposite direction of the back surface 119); in other words, the first end face 613 is rotated from its original position perpendicular to the extended plane of the base 120 to the extended plane of the base 120, forming an acute angle θ with the extended plane of the base 120. This arrangement allows light to emanate from the edge of the display panel in a non-viewing direction, avoiding bright lines at the splicing lines between adjacent display panels, thereby improving the quality of dark images.

[0054] In addition, Figure 5A and Figure 5B In this embodiment, the connector 500 is provided to protrude from the base 120. In this embodiment, the extending plane on which the base 120 is located is a virtual plane, which may be, for example, the plane formed by the vertices of each side of the base 120, or, for example, the plane on which the main base plate of the base 120 is located.

[0055] exist Figure 6 In another embodiment shown, the riser 140 may comprise a first connector 143 and a second connector 144 electrically connected to each other, which are respectively the male and female heads of an electrical connector. The first connector 143 is disposed on the back surface 119 of the display panel 110 and electrically connected to the circuitry on the display panel 110; the second connector 144 is disposed on the base 120 and electrically connected to the circuitry on the base 120. This arrangement allows the riser 140 to also function as a signal transmission device.

[0056] In another embodiment, such as Figure 7 As shown, the top support 140 may include a support point 145 protruding from the base 120, such as a screw. The support point 145 may be externally mounted on the base 120 or integrally formed on the base 120. The support point 145 may be cylindrical or rectangular, but is not limited thereto. An elastic object 146, such as a rubber pad, is provided at the top of the support point 145 for connection or contact with the back surface 110 of the display device 110. The rigidity of the support point 145 is greater than that of the elastic object 146 to provide sufficient support force. This arrangement better maintains the height distance while the cushioning ability of the elastic object 146 reduces damage to the back surface 119 of the display panel 110.

[0057] The above description is merely a few preferred embodiments of the present invention. It should be noted that various changes and modifications can be made to the present invention without departing from its spirit and principles. Those skilled in the art should understand that the present invention is defined by the appended claims, and that various possible substitutions, combinations, modifications, and uses, etc., within the scope defined by the appended claims, do not exceed the intended meaning of the present invention.

Claims

1. A display device comprising: A base; A display panel is disposed on the base, wherein the display panel has a back surface, the back surface has a central area and a peripheral area closer to the side of the display panel than the central area, and the shortest distance between the central area and the base is greater than the shortest distance between the peripheral area and the base; as well as At least one top member is disposed between the base and the back surface, and is disposed corresponding to the central area; The top component includes a first connector and a second connector that are electrically connected to each other. The first connector is electrically connected to the circuitry on the display panel, and the second connector is electrically connected to the circuitry on the base.

2. The display device as claimed in claim 1, wherein the base includes a light box.

3. The display device as claimed in claim 1, further comprising an assembly, wherein the display panel is disposed on the assembly and then disposed on the base via the assembly.

4. The display device as claimed in claim 1, comprising a plurality of connectors respectively connected to the base and the display panel, and located closer to or in the peripheral area of ​​the display panel than the top member.

5. The display device of claim 1, wherein the top member comprises an elastomer having a Shore A hardness between 45 and 55.

6. The display device as claimed in claim 1, wherein the lifting member includes an elastic body, the compression of which is not greater than 5%.

7. The display device of claim 1, wherein the back surface is formed as a rectangle and has a long side and a short side, the central region being located in the range of 42-58% of the length of the shortened side from the long side and 44-56% of the length of the shortened side from the short side.

8. The display device as claimed in claim 1, wherein the display panel has a light-emitting side, the light-emitting side has an optical layer, the optical layer includes a polarizer or a phase deviation plate, and the transmittance in the light-emitting direction is 40% to 60%.

9. The display device of claim 1, wherein the display panel has a light-emitting side, the light-emitting side has an optical layer, the optical layer comprises a spectrum-absorbing material, and has a transmittance of 20% to 70% in the light-emitting direction.

10. The display device of claim 1, wherein the central region is located within 20% of the middle section of the width of the rear surface.

11. The display device of claim 1, wherein the display panel has a side end face that is inclined relative to the base in a direction opposite to the image display direction and forms an acute angle with the base.

12. A display device comprising: A base; A first display panel is mounted on the base; as well as A second display panel is disposed on the base, wherein a first side of the first display panel and a second side of the second display panel abut against each other, and the central portions of the first display panel and the second display panel are respectively raised relative to the base compared to the first side and the second side; It also includes a lifting component, which is disposed in the center portion of the first display panel and the second display panel; The top component includes a first connector and a second connector that are electrically connected to each other. The first connector is electrically connected to the circuitry on the display panel, and the second connector is electrically connected to the circuitry on the base.

13. The display device of claim 12, wherein the first display panel has a light-emitting side, the light-emitting side having an optical layer, the optical layer comprising a polarizer or a phase-deflection plate, and having a transmittance of 40% to 60% in the light-emitting direction.

14. The display device of claim 12, wherein the first display panel has a light-emitting side, the light-emitting side has an optical layer, the optical layer comprising a spectrum-absorbing material, and having a transmittance of 20% to 70% in the light-emitting direction.

15. The display device of claim 12, wherein the first display panel has a side end face that is inclined relative to the base in a direction opposite to the image display direction and forms an acute angle with the base.

16. A display device, comprising: A base; A first display panel is mounted on the base; as well as A second display panel is disposed on the base, wherein a first side of the first display panel and a second side of the second display panel abut against each other, and the portions of the first display panel and the second display panel close to the first side and the second side respectively combine to form a groove that extends along the first side and the second side and is wider at the top and narrower at the bottom; It also includes a lifting component, which is disposed in the center portion of the first display panel and the second display panel; The top component includes a first connector and a second connector that are electrically connected to each other. The first connector is electrically connected to the circuitry on the display panel, and the second connector is electrically connected to the circuitry on the base.

17. The display device of claim 16, wherein the first display panel has a light-emitting side, the light-emitting side having an optical layer, the optical layer comprising a polarizer or a phase-deflecting plate, and having a transmittance of 40% to 60% in the light-emitting direction.

18. The display device of claim 16, wherein the first display panel has a light-emitting side, the light-emitting side has an optical layer, the optical layer comprising a spectrum-absorbing material and having a transmittance of 20% to 70% in the light-emitting direction.

19. The display device of claim 16, wherein the first display panel has a side end face that is inclined relative to the base in a direction opposite to the image display direction and forms an acute angle with the base.

Images