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:
Oct. 28, 2014
Filed:
Mar. 10, 2010
Kohji Fujiwara, Osaka, JP;
Takayuki Murai, Osaka, JP;
Kohji Fujiwara, Osaka, JP;
Takayuki Murai, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A backlight unit according to the present invention includes a plurality of LED drivers () to (), an LED controller () that generates a control information group in which lighting control information for selected LED drivers is arranged and a cascade line that connects the LED drivers in cascade. The LED controller () enables the selected LED drivers (), and feeds the control information group to the cascade line, and the enabled LED drivers () perform an operation (acquisition operation) of acquiring the lighting control information on itself among the control information group whereas the LED drivers () that are not enabled do not perform the acquisition operation. According to the present invention, it is possible to reduce the performance of unnecessary operations of the backlight unit. The present invention can be utilized in a liquid crystal display device that uses LEDs as a light source of backlight.