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. 23, 2013
Filed:
Jun. 11, 2008
Yusuke Ohashi, Kanagawa, JP;
Yukito Saitoh, Kanagawa, JP;
Junichi Hirakata, Kanagawa, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
Disclosed are a backlight unit and a liquid crystal display capable of improving viewing angle dependency of tint of a liquid crystal display image, thereby obtaining a high-quality liquid crystal display image with no tint when viewed from a slanting direction. A backlight unitof a just-beneath type with a plurality of light sources arranged below a light emission surfaceincludes a light emission spectrum controlling unitfor controlling separately light emission spectra in a front direction which becomes a normal direction to the light emission surfaceand a slanting direction inclined at a predetermined angle from the front direction. The plurality of light sources are a plurality of LED light sources which are different in a light emission color, and each LED light source includes a first LED element with the front direction as an optical axis of emission light and a second LED element with the slanting direction as an optical axis of emission light for each light emission color. The light emission spectrum controlling unitchanges light emission intensity of the second LED element for each light emission color.