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:
Apr. 01, 2011
Yong Keun Jee, Gyunggi-do, KR;
Byung Kwan Song, Gyunggi-do, KR;
Yun Whan NA, Gyunggi-do, KR;
Jin Jong Kim, Gyunggi-do, KR;
Sun Woo Im, Gyeongsangnam-do, KR;
Seok Kyu Kim, Incheon, KR;
Hyun Kyung Kim, Gyunggi-do, KR;
Yong Keun Jee, Gyunggi-do, KR;
Byung Kwan Song, Gyunggi-do, KR;
Yun Whan Na, Gyunggi-do, KR;
Jin Jong Kim, Gyunggi-do, KR;
Sun Woo Im, Gyeongsangnam-do, KR;
Seok Kyu Kim, Incheon, KR;
Hyun Kyung Kim, Gyunggi-do, KR;
Samsung Electronics Co., Ltd., Seoul, KR;
Abstract
An LED lamp driving circuit includes: a thermistor having one terminal through which an external voltage is applied; an AC-DC conversion unit connected to the other terminal of the thermistor and converting an AC voltage applied to the other terminal of the thermistor into a DC voltage; and a DC-DC conversion unit converting the DC voltage from the AC-DC conversion unit into a DC voltage required to drive the LED lamp.