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:
Jul. 24, 2012
Filed:
Mar. 03, 2008
Tomoo Furukawa, Osaka, JP;
Kazuyoshi Fujioka, Osaka, JP;
Katsuya Ogawa, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
With the present invention, a fitting curve (f) of the gamma curve (e) arranged to be above a fitting curve of the gamma curve (e), except in a region where the fitting curve (f) shows a reflectivity of 0 and the fitting curve of the gamma curve (e) shows a transmissivity of 0, and a gamma curve (e) of reflective display and a gamma curve (e) of transmissive display are obtained from measurement. Further, the fitting curve (f) includes no gray scale inversion but at least one point of inflection (P) where a sign of a differential coefficient is switched over. Thereby, it becomes possible to realize a liquid crystal display panel and a liquid crystal display device, for displaying images in a transmissive mode and a reflective mode, each of the liquid crystal display panel and the liquid crystal display device easily having an improvement in display quality of reflective display.