Display device having backlight

Patent metadata

Field	Value
Publication number	US-2022343868-A1
Application number	US-202217861924-A
Country	US
Kind code	A1
Filing date	Jul 11, 2022
Priority date	May 18, 2016
Publication date	Oct 27, 2022
Grant date	—

Abstract

According to one embodiment, a display device includes a display panel including a first sub display area and a second sub display area, and an illumination device, wherein the illumination device includes a first light source opposed to the first sub display area, a second light source opposed to the second sub display area, and a partition positioned between the first and second light sources and the display panel, and the partition includes a first side surface surrounding the first light source, a second side surface surrounding the second light source, and a connector which connects the first side surface and the second side surface, and the connector is formed of curved surfaces, or two or more flat surfaces, or a combination of curved surfaces and flat surfaces.

First claim

What is claimed is:

1 . An illumination device comprising:
a first light source; a second light source; a third light source; a first partition arranged between the first light source and the second light source and including a first side surface facing the first light source, a second side surface facing the second light source, and a first connector connecting the first side surface and the second side surface, and a second partition arranged between the first light source and the third light source and including a third side surface facing the first light source, a fourth side surface facing the third light source, and a second connector connecting the third side surface and the fourth side surface, wherein the first partition includes a first optical adjustor on the first connector, the second partition includes a second optical adjustor on the second connector, and a first density of the first optical adjustor is different from a second density of the second optical adjustor.

2 . The illumination device of claim 1 , wherein
the first density of the first optical adjustor is higher than the second density of the second optical adjustor.

3 . The illumination device of claim 1 , wherein
the first light source and the second light source are arranged in a first direction, and the first light source and the third light source are arranged in a second direction crossing the first direction.

4 . The illumination device of claim 1 , wherein
the first optical adjustor and the second optical adjustor diffuse light.

5 . The illumination device of claim 1 , wherein
the first optical adjustor and the second optical adjustor absorb light.

6 . The illumination device of claim 1 , further comprising,
a light diffusing layer opposed to the first light source, the second light source, the third light source, the first connector, and the second connector.

7 . An optical device comprising:
a liquid crystal device; an illumination device comprising: a first light source; a second light source; a third light source; a first partition arranged between the first light source and the second light source and including a first side surface facing the first light source, a second side surface facing the second light source, and a first connector connecting the first side surface and the second side surface, and a second partition arranged between the first light source and the third light source and including a third side surface facing the first light source, a fourth side surface facing the third light source, and a second connector connecting the third side surface and the fourth side surface, wherein the first partition includes a first optical adjustor on the first connector, the second partition includes a second optical adjustor on the second connector, and a first density of the first optical adjustor is different from a second density of the second optical adjustor.

8 . The optical device of claim 7 , wherein
the first density of the first optical adjustor is higher than the second density of the second optical adjustor.

9 . The optical device of claim 7 , wherein
the first light source and the second light source are arranged in a first direction, and the first light source and the third light source are arranged in a second direction crossing the first direction.

10 . The optical device of claim 7 , wherein
the first optical adjustor and the second optical adjustor diffuse light.

11 . The optical device of claim 7 , wherein
the first optical adjustor and the second optical adjustor absorb light.

12 . The optical device of claim 7 , further comprising,
a light diffusing layer disposed between the liquid crystal device and the illumination device.

13 . An optical device comprising:
a liquid crystal device; an illumination device comprising: a first light source; a second light source; a third light source; a first partition arranged between the first light source and the second light source and including a first side surface facing the first light source, a second side surface facing the second light source, and a first connector connecting the first side surface and the second side surface, and a second partition arranged between the first light source and the third light source and including a third side surface facing the first light source, a fourth side surface facing the third light source, and a second connector connecting the third side surface and the fourth side surface, wherein the first partition includes a first optical adjustor on the first connector, the second partition includes a second optical adjustor on the second connector, the first optical adjustor is arranged in different densities from place to place, and the second optical adjustor is arranged in different densities from place to place.

14 . The optical device of claim 13 , wherein
the first light source and the second light source are arranged in a first direction, and the first light source and the third light source are arranged in a second direction crossing the first direction.

15 . The optical device of claim 13 , wherein
the first optical adjustor and the second optical adjustor diffuse light.

16 . The optical device of claim 13 , wherein
the first optical adjustor and the second optical adjustor absorb light.

17 . The optical device of claim 13 , further comprising,
a light diffusing layer opposed to the first light source, the second light source, the third light source, the first connector, and the second connector.

Assignees

• Japan Display Inc

Inventors

• Aoki Shigenori
• Yata Tatsuya
• Harada Tsutomu

Classifications

• G09G2300/0452

  Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components · CPC title

• G09G2310/08

  Details of timing specific for flat panels, other than clock recovery · CPC title

• G02F1/133605

  including specially adapted reflectors · CPC title

• G09G3/3426 Primary

  the different display panel areas being distributed in two dimensions, e.g. matrix · CPC title

• G02F1/133603

  with LEDs · CPC title