The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 2011
Filed:
Jul. 26, 2007
Tetsuya Kobayashi, Kawasaki, JP;
Toshihiro Suzuki, Kawasaki, JP;
Mari Sugawara, Kawasaki, JP;
Tetsuya Hamada, Kawasaki, JP;
Keiji Hayashi, Kawasaki, JP;
Fumiaki Yamada, Kawasaki, JP;
Yasutake Furukoshi, Kawasaki, JP;
Masanori Nishido, Kawasaki, JP;
Tetsuya Kobayashi, Kawasaki, JP;
Toshihiro Suzuki, Kawasaki, JP;
Mari Sugawara, Kawasaki, JP;
Tetsuya Hamada, Kawasaki, JP;
Keiji Hayashi, Kawasaki, JP;
Fumiaki Yamada, Kawasaki, JP;
Yasutake Furukoshi, Kawasaki, JP;
Masanori Nishido, Kawasaki, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal display device including an LCD panel modulating light transmissivities of plural pixels disposed in a matrix form on the basis of respective gradation data; an illumination device for irradiating light to the respective pixels while a ratio (duty ratio) of a lighting time in one frame period is changed; and a display data conversion part for calculating respective lightnesses and a lightness histogram from the respective gradation data, determining a threshold lightness from the lightness histogram on the basis of a previously determined ratio of pixels to be saturated in brightness, processing the respective gradation data on the basis of the threshold lightness to output them to the LCD panel, and outputting duty ratio data to change the duty ratio to the illumination device.