MULTI DISPLAY SYSTEM, AND DISPLAY DEVICE

• US 20140218918A1
• Filed: 05/09/2012
• Published: 08/07/2014
• Est. Priority Date: 05/16/2011
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Moriwaki, Hiroyuki
• Granted Patent: US 9,140,433 B2
• Time in Patent Office: Days
• US Class Current: 362/237
• CPC Class Codes: F21V 17/101 permanently, e.g. welding, gluing or riveting
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: G02F 1/13336 Combining plural substrates to produce large-area displays, e.g. tiled displays
• CPC Class Codes: G02F 2201/503 Arrangements improving the resistance to shock
• CPC Class Codes: G09G 2300/026 Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
• CPC Class Codes: H04N 5/64 Constructional details of receivers, e.g. cabinets or dust covers furniture aspects of television cabinets A47B81/06

Abstract

The present invention aims at mitigating a light guide member being peeled off and a display panel being damaged by stress exerted on an adhesive section or the like between the light guide members. A multi-display system has a plurality of display devices (100) arranged in a matrix such that a cushioning member (310) is arranged alongside a light guide member (150) and between the respective light guide members (150) of two of the adjacent display devices (100) among the plurality of display devices (100)

Claims

1. A multi-display system, comprising:

a plurality of display devices, each display device including;

a display panel;

a casing that houses the display panel, a surface on a viewing side of the display panel including a window-frame part at a periphery of the display panel, a display image of the display panel viewable externally via a window defined by the window-frame part, the casing including the window-frame part that covers part of the display panel on the viewing side; and

a light guide member covering a peripheral area of the surface on the viewing side of the display panel and covering a surface of the window-frame part, the light guide member guiding light for image display to outside of the display panel,

wherein the plurality of display devices are arranged in a matrix such that a cushioning member is arranged along the light guide member, the cushioning member being between the respective light guide members of two adjacent display devices of the plurality of display devices.

2. The multi-display system according to claim 1,

wherein in each display device an outer edge of the light guide member positioned further inside a periphery of the casing than an outer side face of the casing, and

wherein the cushioning member is in contact with the outer edge of the light guide member and the surface of the window-frame part.

3. The multi-display system according to claim 1,

wherein the cushioning member is made of a transparent elastic material.

4. The multi-display system according to claim 3,

wherein the transparent elastic material is an acrylic gel sheet or a urethane gel sheet.

14. The multi-display system according to claim 1,

wherein the surface of the display panel on the display viewing side is covered by a front covering part provided integrally with the light guide member, and

wherein the surface of the light guide member on the display viewing side and a surface of the front covering part on the display viewing side are connected by a smooth curved surface.

5. A multi-display system, comprising:

a plurality of display devices, each display device including;

a display panel;

a casing that houses the display panel, a surface on a viewing side of the display panel including a window-frame part at a periphery of the display panel, a display image of the display panel viewable externally via a window defined by the window frame part, the casing including the window-frame part that covers part of the display panel on the viewing side;

a light guide member covering a peripheral area of the surface on the viewing side of the display panel and covering a surface of the window-frame part, the light guide member guiding light for image display to outside of the display panel; and

a cushioning member provided so as to extend along the light guide member and to cover an outer side face of the light guide member,

wherein the plurality of display devices are arranged in a matrix such that the cushioning member is arranged between the respective light guide members of two adjacent display devices of the plurality of display devices.

6. The multi-display system according to claim 5,

where in each display device an outer edge of the light guide member positioned further inside a periphery of the casing than an outer side face of the casing, and

wherein the cushioning member is in contact with the outer edge of the light guide member and the surface of the window-frame part.

7. The multi-display system according to claim 5,

wherein the light guide member is a plano-convex lens including a first flat surface that faces the display panel side, a convex surface that bulges towards the display viewing side, and a second flat surface that forms an outer side face of the light guide member, and

wherein the cushioning member covers the second flat surface.

8. The multi-display system according to claim 5,

wherein the light guide member is a plano-convex lens including a first flat surface that faces the display panel side, a convex surface that bulges towards the display viewing side, and a second flat surface that forms an outer side face of the light guide member, and

wherein the cushioning member covers the entire convex surface and second flat surface.

9. The multi-display system according to claim 5,

wherein the light guide member is a plano-convex lens including a first flat surface that faces the display panel side, a convex surface that bulges towards the display viewing side, and a second flat surface that forms an outer side face of the light guide member, and

wherein the cushioning member covers the second flat surface and a portion of the convex surface.

10. The multi-display system according to claim 5,

wherein the cushioning member includes a cushioning member part having adhesive characteristics, and a non-adhesive film covering a surface of the cushioning member part, said surface being opposite to the light guide member.

11. The multi-display system according to claim 10,

wherein the cushioning member part is made of a transparent elastic material.

12. The multi-display system according to claim 11,

wherein the transparent elastic material is an acrylic gel sheet or an urethane gel sheet.

13. The multi-display system according to claim 10,

wherein the non-adhesive film is made of a polyethylene terephthalate film or a triacetyl cellulose film.

25. The multi-display system according to claim 5,

wherein the surface of the display panel on the display viewing side is covered by a front covering part provided integrally with the light guide member, and

wherein the surface of the light guide member on the display viewing side and a surface of the front covering part on the display viewing side are connected by a smooth curved surface.

15. A display device, comprising:

a display panel;

a casing that houses the display panel, a surface on a viewing side of the display panel including a window-frame part at a periphery of the display panel, a display image of the display panel viewable externally via a window defined by the window frame part;

a light guide member covering a peripheral area of the surface on the viewing side of the display panel and covering a surface of the window-frame part, the light guide member guiding light for image display to outside of the display panel, the casing including the window-frame part that covers part of the display panel on the viewing side; and

a cushioning member arranged so as to extend along the light guide member and to cover an outer side face of the light guide member.

16. The display device according to claim 15,

wherein an outer edge of the light guide member is positioned further inside a periphery of the casing than an outer side face of the casing, and

wherein the cushioning member is in contact with the outer edge of the light guide member and the surface of the window-frame part.

17. The display device according to claim 15,

wherein the light guide member is a plano-convex lens including a first flat surface that faces the display panel side, a convex surface that bulges towards the display viewing side, and a second flat surface that forms an outer side face of the light guide member, and

wherein the cushioning member covers the second flat surface.

18. The display device according to claim 15,

wherein the light guide member is a plano-convex lens including a first flat surface that faces the display panel side, a convex surface that bulges towards the display viewing side, and a second flat surface that forms an outer side face of the light guide member, and

wherein the cushioning member covers the entire convex surface and second flat surface.

19. The display device according to claim 15,

wherein the light guide member is a plano-convex lens including a first flat surface that faces the display panel side, a convex surface that bulges towards the display viewing side, and a second flat surface that forms an outer side face of the light guide member, and

wherein the cushioning member covers the second flat surface and a portion of the convex surface.

20. The display device according to claim 15,

wherein the cushioning member includes a cushioning member part having adhesive characteristics, and a non-adhesive film covering a surface of the cushioning member part, said surface being opposite to the light guide member.

21. The display device according to claim 20,

wherein the cushioning member part is made of a transparent elastic material.

22. The display device according to claim 21,

wherein the transparent elastic material is an acrylic gel sheet or an urethane gel sheet.

23. The display device according to claim 20,

wherein the non-adhesive film is made of a polyethylene terephthalate film, triacetyl cellulose film, an acrylic film, or a polycarbonate film.

24. The display device according to claim 15,

wherein the surface of the display panel on the display viewing side is covered by a front covering part provided integrally with the light guide member, and

wherein the surface of the light guide member on the display viewing side and a surface of the front covering part on the display viewing side are connected by a smooth curved surface.