IP Library › Granted Patent US 11,841,582
Granted Patent B2
US 11,841,582 · App. 17/144,804 · Granted Dec 12, 2023

Display device

Inventors: Tsutomu Harada (Tokyo, JP); Shigenori Aoki (Tokyo, JP); Koji Yoshida (Tokyo, JP); Masayuki Mifune (Tokyo, JP)
Assignee: Japan Display Inc.
G02F1/133606G02B27/0101G02F1/133603G02B2027/0121G02F1/133605G09G3/32G09G2320/066
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Quick Facts
Patent No.
US 11,841,582
App. No.
17/144,804
Granted
Dec 12, 2023
Kind
B2
Abstract

A display device is provided and including a backlight device including a plurality of light sources; a display panel disposed to oppose the backlight device and incline with respect to a direction perpendicular to an optical axis of the backlight device; a first diffusion plate between the display panel and the backlight device; and a second diffusion plate arranged at a predetermined angle with respect to the first diffusion plate.

Claims (35)

1. A display device comprising:

a backlight device comprising a plurality of light sources;

a display panel disposed to oppose the backlight device and incline with respect to a direction perpendicular to an optical axis of the backlight device;

a first diffusion plate between the display panel and the backlight device, opposed to the display panel and the backlight device, the first diffusion plate being inclined by −10 to +10 degrees with respect to a direction perpendicular to the optical axis of the backlight device; and

a second diffusion plate disposed to oppose the first diffusion plate and incline with respect to the first diffusion plate at an angle less than 90 degrees.

2. The display device according to claim 1 , wherein

the first diffusion plate is arranged in substantially parallel with the backlight device.

3. The display device according to claim 1 , wherein

the first diffusion plate is provided adjacent to a backlight device side with respect to a middle position between the display panel and the backlight device on a central axis of the display panel.

4. The display device according to claim 1 , wherein

an inclination angle of the display panel is 1 to 30 degrees.

5. The display device according to claim 4 , wherein

the first diffusion plate is provided substantially perpendicular to the optical axis of the backlight device.

6. The display device of claim 1 , wherein

the first diffusion plate comprises a glossy surface which opposes the display panel.

7. The display device of claim 1 , wherein

the backlight device is configured to turn on the plurality of light sources individually and control a lighting portion according to a display image.

8. The display device of claim 1 , wherein the second diffusion plate is provided between the first diffusion plate and the display panel.

9. A head-up display device comprising:

a backlight device comprising:

a plurality of light sources;

a display panel disposed to oppose the backlight device and incline with respect to a direction perpendicular to an optical axis of the backlight device;

a first diffusion plate between the display panel and the backlight device, opposed to the display panel and the backlight device, the first diffusion plate being inclined by −10 to +10 degrees with respect to a direction perpendicular to the optical axis of the backlight device;

a second diffusion plate disposed to oppose the first diffusion plate and incline with respect to the first diffusion plate at an angle less than 90 degrees; and

a projection surface on which a display image of the display panel is projected.

10. The head-up display device of claim 9 , wherein

the first diffusion plate is provided adjacent to a backlight device side with respect to a middle position between the display panel and the backlight device on a central axis of the display panel.

11. The head-up display device of claim 9 , wherein

an inclination angle of the display panel is 1 to 30 degrees.

12. The head-up display device of claim 9 , wherein

the first diffusion plate is provided substantially perpendicular to the optical axis of the backlight device.

13. The head-up display device of claim 9 , wherein

a surface of the diffusion plate, which opposes the display panel is a glossy surface.

14. The head-up display device of claim 9 , wherein

the backlight device is configured to turn on the plurality of light sources individually and control a lighting portion according to a display image.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 25, 2021
From: HARADA, TSUTOMU; AOKI, SHIGENORI; YOSHIDA, KOJI; MIFUNE, MASAYUKI
To: JAPAN DISPLAY INC.
Reel/Frame 056667/0820 →
Priority Claims (1)
JP 2017-186528 · Sep 27, 2017 · national
Continuity (2)
Continuation 16142926 · Sep 26, 2018
Related Publication 20210132442A1 · May 6, 2021
Cited By (1)
US 12,504,659