Title:
画像表示装置
Document Type and Number:
Japanese Patent JP5227884
Kind Code:
B2
Abstract:
An image display apparatus includes a dimming value determination circuit for determining a dimming value of a backlight based on an input image signal, an image signal compensation circuit for compensating the input image signal supplied to a liquid crystal panel in accordance with the dimming value, and a backlight drive circuit for driving and controlling the backlight in accordance with the dimming value. When the light emitting luminance of the present frame of the backlight increases relative to the light emitting luminance of the previous frame, the backlight drive circuit delays the timing for applying the dimming value of the present frame. This makes it possible to reduce power consumption of the backlight by suppressing deterioration in the image quality in spite of the sharp change in the display image luminance.
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Inventors:
Kazuhiko Tanaka
Yasutaka Tsuru
Yuuki Oki
Yasutaka Tsuru
Yuuki Oki
Application Number:
JP2009120969A
Publication Date:
July 03, 2013
Filing Date:
May 19, 2009
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G09G3/36; G02F1/133; G09G3/20; G09G3/34
Domestic Patent References:
| JP2009037000A |
Foreign References:
| WO2009044828A1 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation