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:
May. 05, 2015
Filed:
Mar. 14, 2013
Samsung Electro-mechanics Co., Ltd., Suwon, Gyunggi-do, KR;
Jong Tae Hwang, Gyunggi-do, KR;
Deuk Hee Park, Gyunggi-do, KR;
Jae Shin Lee, Gyunggi-do, KR;
Yun Joong Lee, Gyunggi-do, KR;
Sang Hyun Cha, Gyunggi-do, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon, Gyeunggi-Do, KR;
Abstract
There is provided an apparatus for driving a light emitting diode (LED), capable of distributing current stress applied to the LED. The apparatus includes an LED part including a plurality of LED units respectively including at least one LED, the plurality of LED units being connected in parallel to a power input terminal to which rectified power in sine wave form is supplied, and, among the plurality of LED units connected in parallel, a termination end of the LED unit in a front end being connected to a middle of an adjacent LED unit; and a current source unit including a plurality of current sources respectively connected to termination ends of the plurality of LED units and allowing corresponding current to flow through the plurality of LED units.