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:
Feb. 04, 2014
Filed:
Dec. 04, 2006
Chang Woo Ha, Kyungki-do, KR;
Byoung Own Min, Kyungki-do, KR;
Jeong IN Cheon, Seoul, KR;
Yu Jin Jang, Kyungki-do, KR;
Chang Woo Ha, Kyungki-do, KR;
Byoung Own Min, Kyungki-do, KR;
Jeong In Cheon, Seoul, KR;
Yu Jin Jang, Kyungki-do, KR;
Samsung Electronics Co., Ltd., Seoul, KR;
Abstract
In an FSC mode LCD, a controller operates in response to an external adjustment, and a DC/DC converter converts a battery voltage into a driving voltage under control of the controller. A color LED backlight includes first, second and third color LED arrays connected in parallel, which are operated by the driving voltage. An FSC generator generates first, second and third color PWM signals according to an internal sawtooth voltage and a dimming voltage. A 3-channel current source generates first, second and third driving currents under control of the controller, and on/off switches paths of the first, second and third driving currents flowing through the first, second and third color LED arrays according to the first, second and third color PWM signals generated from the FSC generator, thereby adjusting luminance of the first, second and third color LED arrays of the color LED backlight.