US 2019/0172400 A1Published application

Display device

AssigneeSharp Kabushiki Kaisha

InventorsHARUYOSHI KOBAYASHI, KENJI HORIUCHI

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Abstract

A display includes light sources, a light guide plate, a display panel, a light source controller, and a display controller. The light guide plate has a light input surface and a light output surface. The display panel overlaps the light output surface and is configured to display an image by using light from the light output surface. The light source controller is configured to switch between a first lighting mode and a second lighting mode. The first lighting mode allows the light sources to be turned on. The second lighting mode allows at least one of the light sources to be turned on and another one to be turned off. The display controller is configured to provide a black display in an end portion of a display area of the display panel adjacent to the light sources in the second lighting mode.

Claims4

Dependent claims

A display device comprising:

a plurality of light sources spaced apart from each other;
a light guide plate having a light input surface that faces the plurality of light sources to receive light from the plurality of light sources and a light output surface through which the light exits, the light input surface and the light output surface being, respectively, a side surface and a plate surface of the light guide plate,
a display panel overlapping the light output surface and configured to display an image by using light from the light output surface;
a light source controller configured to switch between a first lighting mode and a second lighting mode, the first lighting mode allowing the plurality of light sources to be turned on, the second lighting mode allowing at least one of the plurality of light sources to be turned on and another one of the plurality of light sources to be turned off;
and
a display controller configured to provide a black display in an end portion of a display area of the display panel, the end portion being adjacent to the plurality of light sources in the second lighting mode.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/211,026Filed 5 Dec 2018
Priority: JP 2017-2332715 Dec 2017
Published: 6 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G09G 3/342
Control of illumination source: using several illumination sources separately controlled corresponding to different display panel areas, e.g.…
G02B 6/0068
Characterised by the light source being coupled to the light guide: arrangements of plural sources, e.g. multi-colour light sources
G02B 6/0083
Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides,…:…
G09G 3/36
By control of light from an independent source: using liquid crystals

Family

No related US applications are recorded in the indexed filing history.

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