Tiling display device

Abstract

The present application discloses a tiling display device including at least two tiling-connected first display units having a non-display area, and a second display unit located on the light-emitting side of the first display units and adsorbed and fixed to the non-display area of ​​the junction of two adjacent first display units.

Description

[Technical field]

[0001] This application relates to the field of display technology, and in particular to tiling display devices. [Background technology]

[0002] Currently, a LED light bar is provided at the junction of two tiled LCD panels, which is one of the methods to realize seamless tiling of the viewing angle of a large display screen. However, the flatness of the LED light bar fixed to the LCD panel directly affects the display effect of the large display screen.

[0003] Therefore, it is necessary to propose a technical solution to improve the flatness with which the LED light bar is fixed to the liquid crystal display panel. Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present application is to provide a tiling display device that improves the flatness in which a second display unit is fixed to a non-display area of ​​a joint between two adjacent first display units. [Means for solving the problem]

[0005] The tiling display device has a non-display area and includes at least two tiling-connected first display units, and a second display unit located on the light emission side of the first display units and adsorbed and fixed to the non-display area of ​​the junction of two adjacent first display units.

[0006] In some embodiments, the tiling display device further includes a vacuum suction member located in a non-display area of ​​the first display unit, corresponding to the second display unit, and used to adsorb the second display unit, and a vacuum drawing unit located on the side of the first display unit away from the second display unit, connected to the vacuum suction member, and used to draw a vacuum on the vacuum suction member.

[0007] In some embodiments of the tiling display device, the vacuum suction member includes an suction hole extending in the thickness direction of the first display unit, and the tiling display device further includes a connecting tube, one end of the connecting tube is connected to the vacuum unit, and the other end of the connecting tube is inserted into the suction hole.

[0008] In some embodiments, the first display unit is located in the non-display area of ​​the first display unit, is located on a surface of the first display unit close to the second display unit, and further includes a first accommodating groove corresponding to the second display unit, and a through hole corresponding to the first accommodating groove, communicating with the first accommodating groove, and extending in the thickness direction of the first display unit, the vacuum suction member includes a vacuum chuck provided in the first accommodating groove, the tiling display device further includes a connecting tube, at least a portion of the connecting tube is provided in the through hole, one end of the connecting tube is connected to the vacuum chuck, and the other end of the connecting tube is connected to the vacuum drawing unit.

[0009] In some embodiments, in the tiling display device, the first display unit is a liquid crystal display module, and the second display unit is a light emitting diode light board.

[0010] In some embodiments of the tiling display device, the first display unit includes a liquid crystal display panel and a backlight module, the backlight module includes a back panel, the back panel includes a bottom panel and a side panel arranged along an edge of the bottom panel, the side panel of the back panel is arranged to surround the periphery of the liquid crystal display panel and is located in the non-display area of ​​the first display unit, and the vacuum suction member is provided on the side panel.

[0011] In some embodiments, the tiling display device further includes a vacuum valve connected between the vacuum suction member and the vacuum drawing unit.

[0012] In some embodiments of a tiling display device, a set of the vacuum suction members is provided in the non-display area of ​​the joint between two adjacent first display units, each set of the vacuum suction members includes a plurality of the vacuum suction members, and one vacuum valve is connected to the set of the vacuum suction members.

[0013] In some embodiments, in the tiling display device, the two sets of vacuum suction members located in the non-display areas of the joints of the two adjacent first display units are symmetrically arranged.

[0014] In some embodiments, in a tiling display device, the first display unit includes a second accommodating groove located on a rear surface of the first display unit away from the second display unit, and the vacuum valve is removably fixed to the second accommodating groove.

[0015] In some embodiments, the tiling display device further includes a rear casing located behind the light-emitting surface of at least two of the tiling-connected first display units, the rear casing having an accommodating cavity, and the vacuum valve and the vacuum drawing unit are arranged in the accommodating cavity of the rear casing. Effect of the Invention

[0016] The present application provides a tiling display device in which a second display unit is adsorbed and fixed to the non-display area of ​​the junction of two adjacent first display units, thereby improving the flatness at which the second display unit is fixed to the non-display area of ​​the junction of two adjacent first display units, and thereby improving the display effect of the tiling display device. [Brief description of the drawings]

[0017] [Figure 1] 1 is a schematic cross-sectional view of a tiling display device according to an embodiment of the present application. [Diagram 2] 2 is a schematic plan view of a first display unit and a vacuum interrupter in the tiling display device of FIG. 1. [Diagram 3] FIG. 3 is a schematic cross-sectional view taken along the line AA in FIG. 2. [Figure 4] FIG. 2 is a schematic cross-sectional view of a tiling display device according to another embodiment of the present application. [Diagram 5] 5 is a partially enlarged schematic diagram of the tiling display device of FIG. 4. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The technical solutions in the embodiments of the present application are described below in a clear and thorough manner in conjunction with the drawings of the embodiments of the present application. It is clear that the described embodiments are only some of the embodiments of the present application, and are not all of the embodiments. Based on the embodiments of the present application, all other embodiments that can be obtained by those skilled in the art without paying any creative effort are all within the scope of protection of the present application.

[0019] Referring to Figures 1, 2 and 3, the present application provides a tiling display device 100, which includes at least two first display units 10, a second display unit 20, a vacuum suction member 30, a vacuum valve 40, a vacuum drawing unit 50, a rear casing 60, a first connecting pipe 701, and a second connecting pipe 702.

[0020] The first display unit 10 is used for display. The first display unit 10 has a display area 10a and a non-display area 10b, and the non-display area 10b is located on the outer periphery of the display area 10a and is provided so as to surround the display area 10a.

[0021] The first display unit 10 is a liquid crystal display module, and includes a liquid crystal display panel 102 and a backlight module 103 located behind the light exit surface of the liquid crystal display panel 102.

[0022] The backlight module 103 includes a back panel 1031, a light board, a diffusion plate, an optical film, etc. The back panel 1031 includes a bottom panel 1032 and four first side panels 1033, the bottom panel 1032 has a rectangular shape, the four first side panels 1033 are arranged along the four edges of the bottom panel 1032, the four first side panels 1033 and the bottom panel 1032 surround a first accommodating cavity 1031a, and the light board, diffusion plate, optical film, etc. are arranged in the first accommodating cavity 1031a.

[0023] The liquid crystal display panel 102 is fixed to a first side plate 1033 of a back plate 1031, and the first side plate 1033 is provided so as to surround the periphery of the liquid crystal display panel 102. The display area of ​​the liquid crystal display panel 102 is the display area 10a of the first display unit 10, and the non-display area 10b of the first display unit 10 includes the non-display area of ​​the liquid crystal display panel 102, and the first side plate 1033 of the back plate 1031 is provided in the non-display area 10b of the first display unit 10.

[0024] It can be understood that the first display unit 10 can be a micro light-emitting diode display, a mini light-emitting diode display, an organic light-emitting diode display or a quantum dot display.

[0025] At least two first display units 10 may be tile-connected along the same direction, or may be tile-connected along two perpendicular intersecting directions. Specifically, at least two first display units 10 are tile-connected along the same direction, and two adjacent tile-connected first display units have a joint M, and the joint M includes a seam and a non-display area 10b of the first display unit 10.

[0026] In order to prevent the seam of the joint M of two adjacent tiled first display units and the non-display area 10b of the first display unit 10 from being recognized by the human eye, each second display unit 20 is positioned on the light emission side of the first display unit 10 and is fixed by suction to the non-display area 10b of the joint M of two adjacent first display units 10.

[0027] The second display unit 20 is a light-emitting diode light board. The second display unit 20 includes a substrate and a plurality of inorganic light-emitting diodes disposed on the substrate. The substrate is a printed circuit board, and the inorganic light-emitting diodes can be micro light-emitting diodes or mini light-emitting diodes.

[0028] The tiling display device 100 further includes a flexible printed circuit board 80 and a control circuit board 90. One end of the flexible printed circuit board 80 is connected to the rear of the light-emitting surface of the second display unit 20, and the other end of the flexible printed circuit board 80 is connected to the control circuit board 90, so that the control circuit board 90 can control the emission of the second display unit 20.

[0029] The tiling display device 100 further includes a middle frame 110, which includes a frame body 1101 and four second side panels 1102 connected to the frame body 1101. The frame body 1101 is a rectangular frame body, which is located on one side of the liquid crystal display panel 102 away from the backlight module 103 and is arranged parallel to the liquid crystal display panel 102, and is located in the non-display area of ​​the tiling display device 100, and the opening of the frame body 1101 overlaps the display area 10a of at least two first display units 10 and the second display unit 20. The four second side panels 1102 are vertically connected to the frame body 1101, arranged in a one-to-one relationship with the four first side panels 1033, and located around the four first side panels 1033, and the second side panels 1102 are removably fixed to the first side panels 1033.

[0030] The rear casing 60 is located behind at least two of the first display units 10 that are tiled and is removably fixed to the rear surface of the first display unit 10. The rear casing 60 has a second accommodating cavity 60a. Specifically, the rear casing 60 is removably fixed to the bottom plate 1032 of the back plate 1031.

[0031] In this embodiment, the second display unit 20 covers the seam of the joint M and the non-display area 10b of the first display unit 10, and the second display unit 20 displays, thereby preventing the seam of the joint M of two adjacent first display units connected in tiling and the non-display area 10b of the first display unit 10 from being recognized by the human eye. Furthermore, when the second display unit and the first display unit are bonded together with an adhesive layer having a thickness on the order of millimeters, the thickness of the adhesive layer is not uniform, which causes a problem of the units not being fixed flat. In this embodiment, however, each second display unit 20 is adsorbed and fixed to the non-display area 10b of the first display unit 10, so that the second display unit 20 is fixed flat to the non-display area 10b of the first display unit 10, thereby improving the display effect of the tiling display device 100.

[0032] The vacuum suction member 30 is used to suction the second display unit 20. The vacuum suction member 30 is located in the non-display area 10b of the first display unit 10, and is provided to face the second display unit 20.

[0033] 2 and 3, a set of vacuum suction members 30a is provided in each of the non-display areas 10b of the joints M of two adjacent first display units 10, and each set of vacuum suction members 30a includes a plurality of vacuum suction members 30.

[0034] The plurality of vacuum suction members 30 of one set of vacuum suction members 30a are arranged in parallel along the extension direction of the seam. The plurality of vacuum suction members 30 of one set of vacuum suction members 30a may be arranged in one row, two rows or multiple rows. The plurality of vacuum suction members 30 of one set of vacuum suction members 30a may be arranged to have a rectangular or other shape.

[0035] When a plurality of vacuum suction members 30 of one set of vacuum suction members 30a are arranged in parallel along the extension direction of the seam, the intervals between any two adjacent vacuum suction members 30 in the extension direction of the seam are equal.

[0036] The two sets of vacuum suction members 30a located in the non-display areas 10b of the joints M of two adjacent first display units 10 are arranged symmetrically so that the suction forces of the two sets of vacuum suction members 30a on the second display unit 20 are the same, and the second display unit 20 can be fixed more flatly to the non-display areas 10b of the two adjacent first display units 10.

[0037] The vacuum suction member 30 includes a suction hole 301 , which is located in the first side plate 1033 near the seam of the back plate 1031 , extends in the thickness direction of the first display unit 10 , and penetrates the first side plate 1033 .

[0038] The suction hole 301 is a cylindrical hole. It can be understood that the suction hole 301 can also be a square prism hole or a triangular prism hole.

[0039] The vacuuming unit 50 is used to draw a vacuum on the vacuum suction member 30. The vacuuming unit 50 is located on the side of the first display unit 10 away from the second display unit 20. The vacuuming unit 50 is provided in the second accommodating cavity 60a of the rear casing 60. The vacuuming unit 50 may be a vacuum compressor.

[0040] The vacuum valve 40 is used to adjust the negative pressure condition in the vacuum suction member 30. The vacuum valve 40 is connected between the vacuum suction member 30 and the evacuation unit 50, and one vacuum valve 40 is connected to one set of vacuum suction members 30a.

[0041] Specifically, one end of each of the first connecting pipes 701 is connected to each of the first ends of the vacuum valves 40 in a one-to-one relationship, and the other end of each of the first connecting pipes 701 is inserted into the suction hole 301, providing good sealing between the other end of the first connecting pipe 701 and the suction hole 301, which is advantageous for maintaining a negative pressure condition in the vacuum suction member 30. One end of each of the second connecting pipes 702 is connected to the second end of the vacuum valve 40, and the other end of each of the second connecting pipes 702 is connected to the evacuation unit 50. Both the first connecting pipe 701 and the second connecting pipe 702 are soft plastic pipes and may be used for ventilation.

[0042] As shown in FIG. 3, the first display unit 10 includes a second accommodating groove 1032c, which is located on the back side of the first display unit 10 away from the second display unit 20 and corresponds to the vacuum suction member 30, and the vacuum valve 40 is removably fixed to the second accommodating groove 1032c.

[0043] Specifically, a second accommodating groove 1032c is provided on the surface of the bottom plate 1032 of the back plate 1031 that faces away from the liquid crystal display panel 102, and the vacuum valve 40 is provided in the second accommodating groove 1032c.

[0044] It can be understood that the vacuum valve 40 may be provided in the second receiving cavity 60 a of the rear casing 60 .

[0045] In the tiling display device of this embodiment, the vacuum unit 50 draws a vacuum into the suction holes 301 to make the pressure in the suction holes 301 lower than atmospheric pressure, and the pressure difference between the pressure in the suction holes 301 and the atmospheric pressure acts to suction the second display unit 20 to the suction holes 301 and to suction-fix it to the non-display area 10b of the first display unit 10. Furthermore, the vacuum valve 40 adjusts the negative pressure conditions in the suction holes 301 to adjust the flatness at which the second display unit 20 is suction-fixed to the non-display area 10b of the first display unit 10.

[0046] 4 and 5, the tiling display device of FIG. 4 and the tiling display device of FIG. 1 are basically similar to each other, but are different in the following respects: the first display unit 10 further includes a first accommodating groove 1033a and a through hole 1033b, the first accommodating groove 1033a is located on a surface of the first display unit 10 close to the second display unit 20, and is located in the non-display area 10b of the first display unit 10 and corresponds to the second display unit 20; the through hole 1033b is located in correspondence with the first accommodating groove 1033a, communicates with the first accommodating groove 1033a, and extends in the thickness direction of the first display unit 10; The vacuum suction member 30 includes a vacuum chuck 302, the vacuum chuck 302 is provided in the first accommodating groove 1033a, a first connecting pipe 701 is provided in the through hole 1033b, one end of the first connecting pipe 701 is connected to the vacuum chuck 302, the other end of the first connecting pipe 701 is connected to the vacuum valve 40, and the second connecting pipe 702 is connected to the vacuum valve 40 and the vacuum pumping unit 50, and is located in the second accommodating cavity 60a of the rear casing 60.

[0047] Specifically, the first accommodating groove 1033a and the through hole 1033b are provided in the first side plate 1033 of the back plate 1031, the first accommodating groove 1033a is located on the surface of the first side plate 1033 closer to the second display unit 20, the cross-sectional area of ​​the first accommodating groove 1033a in a direction parallel to the bottom plate 1032 decreases from the side closer to the second display unit 20 to the side away from the second display unit 20, the first accommodating groove 1033a is funnel-shaped, and the through hole 1033b extends in the thickness direction of the first display unit 10 and is connected to the first accommodating groove 1033a. The shape of the vacuum chuck 302 is the same as that of the first accommodating groove 1033a, the vacuum chuck 302 is disposed in the first accommodating groove 1033a, one end of the first connecting pipe 701 is connected to the vacuum chuck 302, the other end of the first connecting pipe 701 is connected to the vacuum valve 40, and the second connecting pipe 702 is connected to the vacuum valve 40 and the vacuum pumping unit 50, and is located in the second accommodating cavity 60a of the rear casing 60.

[0048] In this embodiment, the vacuum chuck 302 adsorbs the second display unit 20, which is advantageous in improving the adsorption effect on the second display unit 20.

[0049] The above description of the embodiments is only intended to help understand the technical solutions and the core ideas of the present application. Those skilled in the art may still make modifications or replace partial technical features based on the technical solutions described in the above embodiments, but these modifications or replacements should be understood to not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application. [Explanation of symbols]

[0050] 10: First display unit 10a:Display area 10b: Hidden area 100: Tiling display device 102: Liquid crystal display panel 103: Backlight module 1031:Backboard 1031a: First containment cavity 1032: Bottom plate 1032c: Second storage groove 1033:First side plate 1033a: First storage groove 1033b:Through hole 110: Medium frame 1101:Frame body 1102:Second side plate 20: Second display unit 30: Vacuum suction member 30a: Vacuum suction member 301: Adsorption hole 302: Vacuum chuck 40: Vacuum valve 50: Vacuum unit 60: Rear casing 60a: Second storage cavity 701: First connecting pipe 702: Second connecting pipe 80: Flexible printed circuit board 90: Control circuit board M: Joint

Claims

1. A tiling display device comprising: at least two tiled first display units each having a non-display area and being a liquid crystal display module; and a second display unit located on the light emission side of the first display unit and adsorbed and fixed to the non-display area of ​​the joint between two adjacent first display units, the second display unit comprising a substrate and a plurality of inorganic light-emitting diodes provided on the substrate, the inorganic light-emitting diodes being micro light-emitting diodes or mini light-emitting diodes.

2. The tiling display device of claim 1, further comprising: a vacuum suction member located in a non-display area of ​​the first display unit, corresponding to the second display unit, and used to suction the second display unit; and a vacuum drawing unit located on the side of the first display unit away from the second display unit, connected to the vacuum suction member, and used to suction the vacuum suction member.

3. The tiling display device of claim 2, wherein the vacuum suction member includes a suction hole extending in a thickness direction of the first display unit, and the tiling display device further includes a connecting tube, one end of the connecting tube being connected to the vacuum unit and the other end of the connecting tube being inserted into the suction hole.

4. The tiling display device of claim 2, wherein the first display unit further includes: a first accommodating groove located in the non-display area of ​​the first display unit, located on a surface of the first display unit close to the second display unit, and corresponding to the second display unit; and a through hole corresponding to the first accommodating groove, communicating with the first accommodating groove, and extending in the thickness direction of the first display unit; the vacuum suction member includes a vacuum chuck provided in the first accommodating groove; and the tiling display device further includes a connecting tube, at least a portion of which is provided in the through hole, one end of the connecting tube being connected to the vacuum chuck, and the other end of the connecting tube being connected to the vacuum drawing unit.

5. 3. The tiling display device of claim 2, wherein the first display unit includes a liquid crystal display panel and a backlight module, the backlight module includes a back panel, the back panel includes a bottom panel and a side panel arranged along the edge of the bottom panel, the side panel of the back panel is arranged to surround the periphery of the liquid crystal display panel and is located in the non-display area of ​​the first display unit, and the vacuum suction member is provided on the side panel.

6. The tiling display device according to claim 2 , further comprising a vacuum valve connected between the vacuum suction member and the vacuum drawing unit.

7. The tiling display device described in claim 6, wherein a set of the vacuum suction members is provided in each non-display area of ​​the joint of two adjacent first display units, each set of the vacuum suction members includes a plurality of the vacuum suction members, and one vacuum valve is connected to one set of the vacuum suction members.

8. The tiling display device according to claim 7 , wherein the two sets of vacuum suction members located in the non-display areas of the joints of the two adjacent first display units are provided symmetrically.

9. A tiling display device comprising: at least two first display units having a non-display area and connected in a tiling; and a second display unit located on the light emission side of the first display unit and adsorbed and fixed to the non-display area of ​​the joint of two adjacent first display units, wherein the first display unit is a liquid crystal display module and the second display unit is a light emitting diode light board.

10. The tiling display device of claim 9, further comprising: a vacuum suction member located in a non-display area of ​​the first display unit, corresponding to the second display unit, and used to suction the second display unit; and a vacuum drawing unit located on the side of the first display unit away from the second display unit, connected to the vacuum suction member, and used to suction the vacuum suction member.

11. The tiling display device of claim 10, wherein the vacuum suction member includes a suction hole extending in a thickness direction of the first display unit, and the tiling display device further includes a connecting tube, one end of the connecting tube being connected to the vacuum unit and the other end of the connecting tube being inserted into the suction hole.

12. The tiling display device of claim 10, wherein the first display unit further includes: a first accommodating groove located in the non-display area of ​​the first display unit, located on a surface of the first display unit close to the second display unit, and corresponding to the second display unit; and a through hole corresponding to the first accommodating groove, communicating with the first accommodating groove, and extending in the thickness direction of the first display unit; the vacuum suction member includes a vacuum chuck provided in the first accommodating groove; and the tiling display device further includes a connecting tube, at least a portion of which is provided in the through hole, one end of the connecting tube being connected to the vacuum chuck, and the other end of the connecting tube being connected to the vacuum drawing unit.

13. The tiling display device of claim 10, wherein the first display unit includes a liquid crystal display panel and a backlight module, the backlight module includes a back panel, the back panel includes a bottom panel and a side panel arranged along the edge of the bottom panel, the side panel of the back panel is arranged to surround the periphery of the liquid crystal display panel and is located in the non-display area of ​​the first display unit, and the vacuum suction member is provided on the side panel.

14. The tiling display device according to claim 10 , further comprising a vacuum valve connected between the vacuum suction member and the vacuum drawing unit.

15. A tiling display device as described in claim 14, wherein a set of the vacuum suction members is provided in each non-display area of ​​the joint of two adjacent first display units, each set of the vacuum suction members includes a plurality of the vacuum suction members, and one vacuum valve is connected to one set of the vacuum suction members.

16. The tiling display device according to claim 15 , wherein the two sets of vacuum suction members located in the non-display areas of the joints of the two adjacent first display units are provided symmetrically.

17. The tiling display device according to claim 15 , wherein the plurality of vacuum suction members of one set of vacuum suction members are arranged in parallel along an extension direction of the seam of the joint portion.

18. The tiling display device of claim 14, wherein the first display unit includes a second accommodating groove located on a back surface of the first display unit away from the second display unit, and the vacuum valve is removably fixed to the second accommodating groove.

19. The tiling display device of claim 14, further comprising a rear casing located behind the light-emitting surfaces of at least two of the tiling-connected first display units, the rear casing having an accommodating cavity, and the vacuum valve and the vacuum drawing unit being arranged in the accommodating cavity of the rear casing.

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