Title:
IMAGE DISPLAY DEVICE AND LIGHT SOURCE CONTROL CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2023/112485
Kind Code:
A1
Abstract:
An image display device (1) comprises: light sources (11-13); a display element (30) that modulates light emitted from the light sources (11-13) on the basis of a video signal; an illumination optical system that guides the light emitted from the light sources (11-13) to the display element (30); and a control unit (101) that controls the duty and the output of the pulse light emission from the light sources (11-13) in accordance with the brightness of a displayed image. The control unit (101) changes one of the duty and the output from the minimum value to the maximum value in one direction in accordance with the change of the brightness, and changes the other of the duty and the output so as to obtain a corresponding brightness gamma correction value.
Inventors:
YAMAMOTO YUTA
KUROZUKA AKIRA
HAMANO TAKAFUMI
YAMAGUCHI MITSUTAKA
KUROZUKA AKIRA
HAMANO TAKAFUMI
YAMAGUCHI MITSUTAKA
Application Number:
PCT/JP2022/039381
Publication Date:
June 22, 2023
Filing Date:
October 21, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G09G3/34; G02F1/13; G09G3/20; G09G3/36; H04N5/66; H04N5/74
Domestic Patent References:
| WO2018097121A1 | 2018-05-31 | |||
| WO2014050497A1 | 2014-04-03 | |||
| WO2018123554A1 | 2018-07-05 |
Foreign References:
| JP2014106420A | 2014-06-09 | |||
| US20160203774A1 | 2016-07-14 | |||
| US20180061333A1 | 2018-03-01 |
Attorney, Agent or Firm:
SHIBANO, Masanori et al. (JP)
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