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, 2019
Filed:
Feb. 11, 2015
Nlt Technologies, Ltd., Kawasaki, Kanagawa, JP;
Hiroki Sugaya, Kanagawa, JP;
NLT TECHNOLOGIES, LTD., Kanagawa, JP;
Abstract
Provided are a backlight unit and a liquid crystal display device. The backlight unit includes: one or plural LED light sources including N-colored LEDs; a photo-detecting section which measures light intensities of red, green and blue colors of received light and outputs corresponding signals; a driver section including N LED-drivers; and a control section including a drive-condition calculating section and a memory. The drive-condition calculating section calculates control signals for three colors among the N colors, on the basis of information stored in the memory and the signals outputted by the photo-detecting section, makes a pair of each remaining color and one of the three colors, outputs the control signals for three colors to the corresponding three LED drivers, and outputs a control signal determined by using the control signal for a color paired with each remaining color to the LED driver for the each remaining color.