Title:
DRIVE DEVICE FOR DISPLAY DEVICE, DRIVE METHOD, AND DISPLAY DEVICE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/081212
Kind Code:
A1
Abstract:
A gamma correction unit (11) performs gamma correction on input gradation data ranging from 0 to 255, and outputs converted gradation data ranging from 16 to 255, wherein the black levels have been clipped to a value of 16. An overdrive correction unit (12) outputs corrected gradation data ranging from 0 to 255 according to the gradation data for the current frame and the gradation for the previous frame. A liquid crystal panel drive circuit (15) outputs, as a black level voltage, a drive voltage of 1.0 V, which is the voltage (threshold voltage) when a change in the transmittance of a liquid crystal panel (16) arises when the drive voltage is made to rise sufficiently from a low voltage, when a corrected gradation data value is 16, and outputs a voltage lower than 1.0 V when a corrected gradation data value is 15 or less. Response speed can thus be easily increased for gradations near the lowest gradation and the highest gradation.
Inventors:
KIMURA KENICHI
Application Number:
PCT/JP2011/006898
Publication Date:
June 21, 2012
Filing Date:
December 09, 2011
Export Citation:
Assignee:
SHARP KK (JP)
KIMURA KENICHI
KIMURA KENICHI
International Classes:
G09G3/36; G02F1/133; G09G3/20
Foreign References:
| JP2008015123A | 2008-01-24 | |||
| JP2004302160A | 2004-10-28 | |||
| JP2003207762A | 2003-07-25 | |||
| JP2002107694A | 2002-04-10 |
Attorney, Agent or Firm:
MAEDA, Hiroshi et al. (JP)
Hiroshi Maeda (JP)
Hiroshi Maeda (JP)
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Claims: