IP Library Granted Patent US 11,942,048
Granted Patent B2
US 11,942,048 · App. 18/133,041 · Granted Mar 26, 2024

Display device

Inventors: Tomoyuki Ishihara (Tokyo, JP); Tomohide Oohira (Tokyo, JP); Yasuhiko Yamagishi (Tokyo, JP)
Assignee: Japan Display Inc.
G09G3/34G09G3/36G09G2300/023G09G2320/0233G09G2320/028G09G2320/0626
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Quick Facts
Patent No.
US 11,942,048
App. No.
18/133,041
Granted
Mar 26, 2024
Kind
B2
Abstract

A display device includes: a display panel with pixels; a dimming panel with dimming pixels; and a light source. When a pixel is controlled to be lit in white and a predetermined condition is satisfied, a blurring region is formed, and light from the light source is transmitted through the blurring region and the pixel. When a pixel is controlled to be lit up in white and the predetermined condition is not satisfied, the blurring region is not formed, the dimming pixel overlapping the pixel on a straight line along a direction in which the display panel faces the dimming panel is controlled to transmit light, and light from the light source is transmitted through the dimming pixel and the pixel. The predetermined condition is satisfied when the pixel controlled to be lit in white is at a predetermined distance or farther from an outer edge of a display area.

Claims (11)

1. A display device comprising:

a display panel comprising a plurality of pixels;

a dimming panel that is disposed so as to face the display panel on one surface side of the display panel and comprises a plurality of dimming pixels; and

a light source configured to emit light that travels from the dimming panel toward the display panel, wherein

when any of the pixels is controlled to be lit up in white in accordance with an input image signal, and a predetermined condition is satisfied, a blurring process is applied so that more than one of the dimming pixels transmit light, a blurring region is formed that is a region including the dimming pixels to which the blurring process is applied, and light from the light source is transmitted through the blurring region and the pixel and emitted to another surface side of the display panel,

when any of the pixels is controlled to be lit up in white in accordance with the input image signal and the predetermined condition is not satisfied, the blurring region is not formed, any of the dimming pixels located in a position overlapping the pixel on a straight line along a direction in which the display panel faces the dimming panel is controlled to transmit light, and light from the light source is transmitted through the dimming pixel and the pixel and emitted to the other surface side of the display panel, and

the predetermined condition is satisfied when the pixel that is controlled to be lit up in white is at a predetermined distance or farther from an outer edge of a display area provided with the pixels on the display panel.

2. The display device according to claim 1 , wherein the predetermined condition is not satisfied when the pixel that is controlled to be lit up in white is located adjacent to the outer edge.

3. The display device according to claim 1 , wherein information indicating the predetermined distance is set in advance in a register.

4. The display device according to claim 1 , further comprising an imaging device with an imaging region in which a space facing the display panel is included, wherein

when a point of view of a user is identified as being within a predetermined region based on an image captured by the imaging device, the blurring process is applied so that the dimming pixels transmit light, the blurring region is formed that is a region including the dimming pixels to which the blurring process is applied, and light from the light source is transmitted through the blurring region and the pixel and emitted to the other surface side of the display panel, even when the pixel not satisfying the predetermined condition is controlled to be lit up in white.

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 Apr 11, 2023
From: ISHIHARA, TOMOYUKI; OOHIRA, TOMOHIDE; YAMAGISHI, YASUHIKO
To: JAPAN DISPLAY INC.
Reel/Frame 063290/0769 →
Priority Claims (1)
JP 2022-066993 · Apr 14, 2022 · national
Continuity (1)
Related Publication 20230335070A1 · Oct 19, 2023