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:
Aug. 23, 2016
Filed:
Jan. 27, 2012
Young DO Jong, Ansan-si, KR;
Hyun Gu Kang, Yongin-si, KR;
Hye Man Jung, Suwon-si, KR;
Kang Nyung Lee, Seoul, KR;
Young Do Jong, Ansan-si, KR;
Hyun Gu Kang, Yongin-si, KR;
Hye Man Jung, Suwon-si, KR;
Kang Nyung Lee, Seoul, KR;
Seoul Semiconductor Co., Ltd., Ansan-si, KR;
Abstract
An LED driving circuit package includes a rectification unit to receive an AC power voltage and rectify the AC power voltage to generate a ripple voltage, an LED driving switching unit including a plurality of switch units and a plurality of current control units. The LED driving circuit package further includes a low voltage control unit including a circuit power supply unit to generate low voltage power, a voltage detection unit to detect a magnitude of the ripple voltage, a reference frequency generation unit to generate a reference frequency, and a reference pulse generation unit to generate a reference pulse for controlling the operation of the LED driving switch unit according to the reference frequency and a magnitude of the voltage detected by the voltage detection unit.