Display device

Patent metadata

Field	Value
Publication number	US-2020152139-A1
Application number	US-202016738622-A
Country	US
Kind code	A1
Filing date	Jan 9, 2020
Priority date	May 18, 2016
Publication date	May 14, 2020
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; and a partition arranged between the first light source and the second light source, wherein the partition includes a first side surface facing the first light source, a second side surface facing the second light source, a connector which connects the first side surface and the second side surface and is parallel to a display panel as seen in a cross section perpendicular to a main surface in the display panel, and an optical adjustor which is positioned on the connector to diffuse or absorb light.

2 . The illumination device of claim 1 , wherein
the optical adjustor is in contact with the connector.

3 . The illumination device of claim 1 , wherein
the optical adjustor is a light absorbing material.

4 . The illumination device of claim 1 , wherein
the optical adjustor is a light diffusing material.

5 . The illumination device of claim 1 , further comprising a light diffusing layer positioned between the partition and the display panel, wherein a haze value of the optical adjustor is less than that of the light diffusing layer.

6 . The illumination device of claim 1 , wherein the optical adjustor is a sheet extending from an upper surface to positions opposed to the first light source and the second light source.

7 . The illumination device of claim 1 , wherein
the optical adjustor is formed as dots.

8 . The illumination device of claim 7 , wherein
the dots of the optical adjustor are arranged at an even density.

9 . The illumination device of claim 7 , wherein
the dots of the optical adjustor are arranged at densities differing from place to place.

10 . The illumination device of claim 1 , wherein
the optical adjustor is arranged as stripes.

11 . The illumination device of claim 3 , wherein
the optical adjustor is arranged as stripes.

12 . The illumination device of claim 4 , wherein
the optical adjustor is arranged as stripes.

13 . The illumination device of claim 10 , wherein
the optical adjustor is a light absorbing material or a light diffusing material.

14 . The illumination device of claim 13 , wherein
a plurality of light sources are partitioned by a plurality of connectors extending in a first direction and a plurality of connectors extending in a second direction differing from the first direction, the connectors extending in the first direction are light diffusing materials, and the connectors extending in the second direction are light absorbing materials.

15 . A display device comprising:
a first light source; a second light source; and a partition arranged between the first light source and the second light source, wherein the partition includes a first side surface facing the first light source, a second side surface facing the second light source, a connector which connects the first side surface and the second side surface and is parallel to a display panel as seen in a cross section perpendicular to a main surface in the display panel, and an optical adjustor which is positioned on the connector to diffuse or absorb light.

16 . The display device of claim 15 , wherein
the optical adjustor is formed as dots, and the dots of the optical adjustor are arranged at an even density.

17 . The display device of claim 15 , wherein
the optical adjustor is formed as dots, and the dots of the optical adjustor are arranged at densities differing from place to place.

18 . The display device of claim 15 , wherein
the optical adjustor is arranged as stripes, the optical adjustor is a light absorbing material or a light diffusing material, a plurality of light sources are partitioned by a plurality of connectors extending in a first direction and a plurality of connectors extending in a second direction differing from the first direction, the connectors extending in the first direction are light diffusing materials, and the connectors extending in the second direction are light absorbing materials.

19 . A head-up display device comprising:
a first light source; a second light source; and a partition arranged between the first light source and the second light source, wherein the partition includes a first side surface facing the first light source, a second side surface facing the second light source, a connector which connects the first side surface and the second side surface and is parallel to a display panel as seen in a cross section perpendicular to a main surface in the display panel, and an optical adjustor which is positioned on the connector to diffuse or absorb light.

20 . The head-up display device of claim 19 , wherein
the optical adjustor is a light absorbing material or a light diffusing material.

Assignees

• Japan Display Inc

Inventors

• Aoki Shigenori
• Yata Tatsuya
• Harada Tsutomu

Classifications

• G02F1/133606 Primary

  including a specially adapted diffusing, scattering or light controlling members · 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

• G02F1/133611 Primary

  including means for improving the brightness uniformity · CPC title

• G09G2310/08

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