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. 25, 2019
Filed:
Nov. 05, 2015
Lg Innotek Co., Ltd., Seoul, KR;
Jae Hun Yoon, Seoul, KR;
Do Yub Kim, Seoul, KR;
Min Hak Kim, Seoul, KR;
Seung Beom Jeong, Seoul, KR;
LG INNOTEK CO., LTD., Seoul, KR;
Abstract
An embodiment comprises: a voltage generation unit for providing a direct current signal for driving a light emitting unit; a sensing resistor; and a dimming unit which is connected between the light emitting unit and the sensing resistor and controls a current flowing in the sensing resistor and the light emitting unit, wherein the dimming unit adjusts the level of the direct current signal on the basis of a first sensing voltage as a result of sensing the voltage of a first node where a switch is connected to the light emitting unit, and a second sensing voltage as a result of sensing the voltage of a second node where the switch is connected to the sensing resistor.