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:
Mar. 09, 2010
Filed:
Jul. 08, 2005
Norimasa Furukawa, Tokyo, JP;
Hiroaki Ichikawa, Kanagawa, JP;
Kenichi Kikuchi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention is directed to a drive apparatus for a backlight unit () in which plural LED (Light Emitting Diode) elements are cascade-connected every three primary colors, which comprises a signal generating unit () for generating a signal having an arbitrary amplitude, an adjustment unit () for adjusting light emission quantities of groups of LED elements () on the basis of the signal which has been generated by the signal generating unit (), a voltage applying unit () for applying a predetermined voltage every the groups of LED elements (), light emission quantity detecting units () for detecting quantities of rays of light which have been emitted from the groups of LED elements (), calorific value detecting units () for detecting calorific values emitted from the groups of LED elements in accordance with the voltage which has been applied to the voltage applying unit (), and a control unit () for controlling the signal generating unit () on the basis of light emission quantities which have been detected by the light emission quantity detecting units () and calorific values which have been detected by the calorific value detecting units ().