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:
Oct. 02, 2007
Filed:
Nov. 10, 2000
Satoshi Hirano, Itabashiku, JP;
Masaru Yasui, Kobe, JP;
Takeo Kamiya, Deceased, Kobe, JP;
Akira Kumiya, Legal Representative, Anio, JP;
Satoshi Hirano, Itabashiku, JP;
Masaru Yasui, Kobe, JP;
Takeo Kamiya, deceased, Kobe, JP;
Akira Kumiya, legal representative, Anio, JP;
TPO Hong Kong Holding Limited, Shatin, HK;
Abstract
In an RGBW-type liquid crystal display device, luminance is improved by the addition of W sub-pixels while an image is displayed without any change in chromaticity of halftones. Digital corrected values of red, green and blue are obtained by adding a predetermined digital value for driving a W sub-pixel to each of RGB digital values which correspond respectively to pixels of an acquired image. A converting calculation is effected on the digital corrected values such that the ratio of these digital corrected values for red, green and blue is made equal to the ratio of the red, green and blue digital values corresponding to the pixels of said acquired image. The RGBW sub-pixels are driven with the converted values and the predetermined digital value of driving W sub-pixel to thereby display an image.