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:
Jun. 23, 2015
Filed:
Mar. 15, 2013
Samsung Electro-mechanics Co., Ltd., Suwon, Gyunggi-do, KR;
University of Seoul Industry Cooperation Foundation, Seoul, KR;
Deuk Hee Park, Gyunggi-do, KR;
Joong Ho Choi, Gyunggi-do, KR;
Sang Hyun Cha, Gyunggi-do, KR;
Jae Shin Lee, Gyunggi-do, KR;
Chang Seok Lee, Gyunggi-do, KR;
Yun Joong Lee, Gyunggi-do, KR;
SAMSUNG ELECTRO-MECHANICS CO., LTD., Suwon-Si, Gyeonggi-Do, KR;
UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION, Seoul, KR;
Abstract
There is provided an illumination driving apparatus for a light emitting diode, the apparatus including: a light emitting unit including M number of light emitting diodes (LEDs) connected in series and driven by an output voltage rectified in a rectifying unit; an LED switch unit including N number of LED switches connected in parallel with at least N number of the M LEDs, respectively, and connected in series; an LED switch control signal generating unit comparing the output voltage of the rectifying unit with each of the first to Nth preset reference voltages to generate N number of LED switch control signals controlling the LED switch unit; and an LED switch controlling unit transferring the N number of LED switch control signals to the LED switch unit.