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. 11, 2014
Filed:
Jun. 29, 2010
Dong-hun Lee, Bucheon, KR;
Dong-hee Kim, Bucheon, KR;
Kyung-goo Lee, Incheon, KR;
Seok-mun Choi, Seoul, KR;
Dong-Hun Lee, Bucheon, KR;
Dong-Hee Kim, Bucheon, KR;
Kyung-Goo Lee, Incheon, KR;
Seok-Mun Choi, Seoul, KR;
Silicon Mitus, Inc., Seoul, KR;
Abstract
A control device and an LED light emitting device using the same are provided and technology of providing a high contrast ratio to the LED light emitting device and allowing the LED light emitting device to perform a stable operation is disclosed. The LED light emitting device includes a DC/DC converter reference voltage generator that generates a DC/DC converter reference voltage so that a minimum level of a channel voltage having a largest LED voltage drop agrees with a predetermined minimum reference voltage by detecting a plurality of channel voltages corresponding to LED voltage drops of each of a plurality of LED channels LED and an output voltage controller that controls an output voltage of the DC/DC converter using a distribution voltage corresponding to an output voltage and the DC/DC converter reference voltage.