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.

Date of Patent:
Oct. 15, 2019

Filed:

Sep. 05, 2017
Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventor:

Hiroyuki Yoneyama, Kanagawa, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01); F21V 9/30 (2018.01); G02F 1/1335 (2006.01); G02F 1/1343 (2006.01); G09G 3/34 (2006.01);
U.S. Cl.
CPC ...
F21V 9/30 (2018.02); G02F 1/133603 (2013.01); G02F 1/133605 (2013.01); G02F 1/133606 (2013.01); G02F 1/133611 (2013.01); G02F 1/134309 (2013.01); G09G 3/3413 (2013.01); G02F 2001/133601 (2013.01); G02F 2001/133607 (2013.01); G02F 2001/133614 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0238 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/064 (2013.01); G09G 2320/0626 (2013.01); G09G 2320/0686 (2013.01);
Abstract

The backlight unit includes a light source unit, and a wavelength conversion member disposed on an optical path of light emitted from the light source unit. The light source unit includes a light source allocated to each of the areas, a control of the backlight brightness for each area is performed by controlling a light emission intensity of each light source allocated to each area independently of a light emission intensity of a light source allocated to a different area, and a light source allocated to at least one area includes a light source group including two or more kinds of light sources having different light emission maximum wavelengths, and a light emission intensity of at least one kind of light source included in the light source group is capable of being controlled independently of a light emission intensity of a different light source included in the light source group.


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