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:
Dec. 13, 2011
Filed:
May. 30, 2007
Sang Yun Lee, Gyunggi-do, KR;
Sang Yun Lee, Gyunggi-do, KR;
Samsung LED Co., Ltd., Gyunggi-Do, KR;
Abstract
An LCD driving system using at least one of each of red, green and blue LED arrays composed of red LEDs, green LEDs, and blue LEDs connected in series, respectively. An SMPS includes an AC-DC converter for converting an externally inputted AC voltage to a DC voltage, and red, green and blue LED DC-DC converters for converting the DC voltage to a predetermined magnitude of DC voltage for driving the red, green and blue LED arrays. A light source includes a substrate with the red, green and blue LED arranged thereon, and each of red, green and blue LED constant current controllers for controlling the current running through the red, green and blue LED arrays so as to maintain predetermined outputs of the LEDs. A bridge board electrically connects the red, green and blue LED DC-DC converters with the red, green and blue LED constant current controllers, respectively.