Spacer A for display apparatus

Patent metadata

Field	Value
Publication number	US-10371886-B2
Application number	US-201415320308-A
Country	US
Kind code	B2
Filing date	Sep 26, 2014
Priority date	Sep 26, 2014
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

Provided is a display apparatus capable of preventing the warp and the optical leak of an optical sheet. The display apparatus includes: a display panel which displays an image; a light guide plate which faces the display panel and emits light towards the display panel; a spacer which forms a gap between the light guide plate and the display panel; and an optical sheet arranged at the gap. A peripheral portion of the light guide plate is located outside with respect to the display panel, and the spacer includes a panel attaching part which is attached at an edge portion of one surface of the display panel and with a light-guide-plate attaching part which continues to the panel attaching part and is attached at an edge portion in one surface of the light guide plate.

First claim

The invention claimed is:

1. A display apparatus comprising:
a display panel having a rectangular shape which has (i) a front surface comprising a display area for displaying an image and a non-display area surrounding the display area, and (ii) a rear surface which is opposite to the front surface;
an optical sheet having a rectangular shape which has (i) a front surface facing the rear surface of the display panel, and (ii) a rear surface which is opposite to the front surface;
a light guide plate having a rectangular shape which has a front surface facing the rear surface of the optical sheet, the front surface of the light guide plate has (i) a central region which is contact with the rear surface of the optical sheet and (ii) a peripheral region out of the central region which is not in contact with the rear surface of the optical sheet;
a spacer which extends in a longitudinal direction of a side surface of the light guide plate and is disposed between the light guide plate and the display panel so as to form a space between the front surface of the light guide plate and the rear surface of the display panel at which the optical sheet is arranged,
wherein
the rear surface of the display panel has an attached region which is opposite to the non-display area of the front surface of the display panel,
the spacer consists of:
a panel attaching part having a flat plate shape elongating in the longitudinal direction which has a front surface in contact with the attached region in the rear surface of the display panel; and
a light-guide-plate attaching part having a flat plate shape elongating in the longitudinal direction which continues to the panel attaching part and has a rear surface in contact with the peripheral region in the front surface of the light guide plate; and
a connecting part having a flat plate shape elongating in the longitudinal direction which connects the panel attaching part and the light-guide-plate attaching part, and

wherein the spacer has a crank-shaped cross-section orthogonal to the longitudinal direction such that the panel attaching part and the light-guide-plate attaching part extend away from the connecting part in opposite directions, and
in a view along a front-rear direction, an outer edge of the light-guide-plate attaching part is located outside an outer edge of the panel attaching part or is located at the same as the outer edge of the panel attaching part,
in the view along the front-rear direction, the spacer is arranged outside the display area of the front surface of the display panel and inside the front surface of the light guide plate,
the spacer does not connect to any portions which are configured outside of the light guide plate, and
the spacer contacts with the display panel via only the front surface of the panel attaching part, and contacts with the light guide plate via only the rear surface of the light-guide-plate attaching part.

2. The display apparatus according to claim 1 , wherein in the view along the front-rear direction, an inner edge of the light-guide-plate attaching part is located outside an inner edge of the panel attaching part.

3. The display apparatus according to claim 1 , wherein in the view along the front-rear direction, a black matrix in the display panel and a part of the panel attaching part overlap.

4. The display apparatus according to claim 1 , wherein in the view along the front-rear direction, the light-guide-plate attaching part and a black matrix in the display panel do not overlap.

5. The display apparatus according to claim 1 , wherein
the light-guide-plate attaching part has a thickness thicker than that of the panel attaching part.

6. The display apparatus according to claim 1 , wherein the light guide plate is made of glass, and
the spacer is made of metal or foamed polymer.

7. The display apparatus according to claim 1 , wherein the spacer does not contact with the optical sheet.

8. The display apparatus according to claim 1 , wherein an entire of the rear surface of the light-guide-plate attaching part is attached to the front surface of the light guide plate.

9. The display apparatus according to claim 1 , wherein a part or an entire of the front surface of the panel attaching part is attached to the rear surface of the display panel.

10. The display apparatus according to claim 1 , wherein the spacer comprises four spacers provided on the front surface of the light guide plate along four edge portions of the light guide plate respectively.

11. The display apparatus according to claim 1 , wherein in a view along a front-rear direction, an outer edge of the spacer is located at the same position as an edge of the light guide plate.

12. The display apparatus according to claim 1 , wherein
the connecting part is rectangular plate-shaped having a first side and a second side parallel to the first side, the first side being attached to the panel attaching part and a second side being attached to the light-guide plate attaching part, so that the light-guide-plate attaching part continues to the panel attaching part via the connecting part.

13. The display apparatus according to claim 12 , wherein the connecting part is orthogonal to the panel attaching part and to the light-guide-plate attaching part.

14. The display apparatus according to claim 13 , wherein the first side of the connecting part is attached to the outer edge of the panel attaching part, and the second side of the connecting part is attached to the inner edge of the light-guide-plate attaching part.

15. The display apparatus according to claim 12 , wherein the connecting part is plate-shaped and is inclined with respect to the panel attaching part and to the light-guide-plate attaching part to form an acute angle or an obtuse angle.

16. The display apparatus according to claim 15 , wherein the first side of the connecting part is attached to the outer edge of the panel attaching part, and the second side of the connecting part is attached to the inner edge of the light-guide-plate attaching part.

Assignees

• Sakai Display Products Corp

Inventors

• Sugimoto Arimasa
• Minakuchi Yasunori

Classifications

• G02F2201/54

  Arrangements for reducing warping-twist · CPC title

• G02B6/0088 Primary

  of the light guide or other optical sheets in the package · CPC title

• G02F2001/133388

  Physics · mapped topic

• G02F1/133615

  Edge-illuminating devices, i.e. illuminating from the side · CPC title

• G02F1/133308

  Support structures for LCD panels, e.g. frames or bezels · CPC title