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:
Sep. 25, 2018
Filed:
Jan. 15, 2015
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
Makoto Shiomi, Osaka, JP;
SHARP KABUSHIKI KAISHA, Sakai, Osaka, JP;
Abstract
A liquid-crystal display device includes red pixels with red color filters, green pixels with green filters, blue pixels with blue filters, and a light projecting unit to project light upon the pixels. The light projecting unit includes first and second light sources wherein the light emission peak wavelength is in the green region, and a third light source wherein the light emission peak wavelength is in the blue region. The second light source includes a light emission peak wavelength greater than the first light source. In a first term, the first source emits light, and the blue pixel liquid-crystal layer is controlled to a transmissibility less than or equal to a threshold regardless of frame data. In a second term, the first light source is effectively not and the second and third sources are emitting light. The blue pixel liquid-crystal layer is controlled to a transmissibility according to frame data.