US 11,443,705 B2Granted

Image display device for displaying moving images

AssigneeSony Group Corporation

InventorsYoshihisa Sato, Takahiro Mochizuki

Life of this patent

Estimating the term…

Loading patent…

Abstract

Provided is a device that displays a moving image with high dynamic range. A control unit controls drive of at least one of a light source unit, a phase modulation unit, or an intensity modulation unit in accordance with an image signal. The light source unit applies first illumination light to a phase modulation panel of the phase modulation unit, which modulates a phase of the first illumination light applied from the light source unit, divides second illumination light for each predetermined phase modulation pixel group of the phase modulation panel, and applies the second illumination light to the intensity modulation panel for each predetermined intensity modulation pixel group of the intensity modulation panel, and the intensity modulation panel modulates an intensity of the second illumination light applied from the phase modulation panel.

Claims20

Dependent claims

An image display device comprising at least:

a control unit;
a light source unit;
a phase modulation unit;
and
an intensity modulation unit,
wherein the control unit controls drive of at least one of the light source unit, the phase modulation unit, or the intensity modulation unit in accordance with an image signal,
wherein the light source unit emits invisible light,
wherein the phase modulation unit includes a phase modulation panel constituted by a plurality of phase modulation pixel groups,
wherein the intensity modulation unit includes an intensity modulation panel constituted by a plurality of intensity modulation pixel groups, wherein the light source unit applies first illumination light to the phase modulation panel,
wherein the phase modulation panel modulates a phase of the first illumination light applied from the light source unit, divides second illumination light for each predetermined phase modulation pixel group, and applies the second illumination light to the intensity modulation panel for each predetermined intensity modulation pixel group, and
wherein the intensity modulation panel modulates an intensity of the second illumination light applied from the phase modulation panel.

8 more elements

An image display device comprising at least:

a control unit;
a plurality of light source units;
a plurality of phase modulation units;
a plurality of intensity modulation units;
and
a multiplexer,
wherein the control unit controls drive of at least one of the plurality of light source units, the plurality of phase modulation units, or the plurality of intensity modulation units in accordance with an image signal,
wherein each of the plurality of phase modulation units include a phase modulation panel constituted by a plurality of phase modulation pixel groups,
wherein each of the plurality of intensity modulation units include an intensity modulation panel constituted by a plurality of intensity modulation pixel groups,
wherein each of the plurality of light source units apply a first illumination light to each of the plurality of phase modulation panels,
wherein each of the plurality of phase modulation panels modulates a phase of the first illumination light applied from each of the plurality of light source units, divides second illumination light for each predetermined phase modulation pixel group, and applies the second illumination light to each of the plurality of intensity modulation panels for each predetermined intensity modulation pixel group,
wherein each of the plurality of intensity modulation panels modulates an intensity of the second illumination light applied from each of the plurality of phase modulation panels,
wherein each of the plurality of light source units emits the first illumination light in red, green, or blue,
wherein each of the plurality of phase modulation panels emits the second illumination light in red, green, or blue,
wherein each of the plurality of intensity modulation panels emits third illumination light in red, green, or blue, and
wherein the multiplexer combines and emits the third illumination light emitted from each of the plurality of intensity modulation panels.

13 more elements

An image display device comprising at least:

a control unit;
a plurality of light source units;
a plurality of phase modulation units;
a plurality of intensity modulation units;
a multiplexer;
and
a color separator,
wherein the control unit controls drive of at least one of the plurality of light source units, the plurality of phase modulation units, or the plurality of intensity modulation units in accordance with an image signal,
wherein each of the plurality of phase modulation units include a phase modulation panel constituted by a plurality of phase modulation pixel groups,
wherein each of the plurality of intensity modulation units include an intensity modulation panel constituted by a plurality of intensity modulation pixel groups,
wherein each of the plurality of light source units apply a first illumination light to each of the plurality of phase modulation panels,
wherein each of the plurality of phase modulation panels modulates a phase of the first illumination light applied from each of the plurality of light source units, divides second illumination light for each predetermined phase modulation pixel group, and applies the second illumination light to each of the plurality of intensity modulation panels for each predetermined intensity modulation pixel group,
wherein each of the plurality of intensity modulation panels modulates an intensity of the second illumination light applied from each of the plurality of phase modulation panels,
wherein the color separator separates color elements of white illumination light emitted from a light source unit of the plurality of light source units into red, green, or blue, and applies the first illumination light to each of the phase modulation panels,
wherein each of the plurality of phase modulation panels emits the second illumination light in at least red, green, and blue,
wherein each of the plurality of intensity modulation panels emits third illumination light in at least red, green, and blue, and
wherein the multiplexer combines and emits the third illumination light emitted from each of the plurality of intensity modulation panels.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/291,311Filed 6 Nov 2019
Priority: JP JP2018-21266713 Nov 2018
Published: US 2022/0005424 A16 Jan 2022
Granted: 13 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

G09G 3/3406
By control of light from an independent source: control of illumination source
G09G 3/36
By control of light from an independent source: using liquid crystals
G02F 1/13306
Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements: circuit arrangements or driving methods for the control of…
G02F 1/133607
Including a specially adapted diffusing, scattering or light controlling members: the light controlling member including light directing or…

Family

US 2022/0005424 A1Pre-grant publication · published 6 Jan 2022
US 11,443,705 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key