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:
Feb. 06, 2018
Filed:
Oct. 22, 2015
Japan Display Inc., Tokyo, JP;
Yasuhisa Shiraishi, Tokyo, JP;
Tomohisa Onishi, Tokyo, JP;
Japan Display Inc., Tokyo, JP;
Abstract
This invention reduces or prevents a phenomenon where a screen close to a light source becomes yellowed. A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide plateand white LEDsarrayed in a first direction on a plane of incidenceof the light guide plate. The white LEDseach includes, in the first direction on a light-emitting surface, a central area occupied by a blue spectrum more densely than at adjacent sides of the central area. Incident plane protrusions, each extending in a thickness direction of the light guide plate, are formed on a section corresponding to the area having the dense blue spectrum of each LED, at the plane of incidenceof the light guide plate