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. 03, 2015
Filed:
Jun. 15, 2011
Applicant:
Tsukasa Fujita, Osaka, JP;
Inventor:
Tsukasa Fujita, Osaka, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); G09G 3/34 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 37/02 (2013.01); G09G 3/3406 (2013.01); H05B 33/0887 (2013.01); G09G 2320/041 (2013.01); G09G 2330/04 (2013.01); G09G 2330/02 (2013.01);
Abstract
An LED backlight includes a light emitting unit, a driver, a current divider, and a power supply unit. The lighting unit includes a plurality of LEDs connected in series. The driver is connected in series with the LEDs and configured to control driving of the light emitting unit. The current divider is connected in parallel to the driver of a series circuit including the light emitting unit and the driver. The power supply unit is configured to apply a voltage to the series circuit.