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:
Mar. 21, 2023
Filed:
Jul. 15, 2021
Applicant:
Silicon Works Co., Ltd., Daejeon, KR;
Inventors:
Ji Hwan Kim, Daejeon, KR;
Jong Min Lee, Daejeon, KR;
Assignee:
SILICON WORKS CO., LTD., Daejeon, KR;
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/00 (2006.01); H05B 45/50 (2022.01); H05B 45/10 (2020.01); G09G 3/32 (2016.01);
U.S. Cl.
CPC ...
G09G 3/006 (2013.01); G09G 3/32 (2013.01); H05B 45/10 (2020.01); H05B 45/50 (2020.01); G09G 2300/0842 (2013.01); G09G 2320/064 (2013.01); G09G 2330/04 (2013.01); G09G 2330/12 (2013.01);
Abstract
The present disclosure relates to a technology for driving an LED, comprising sensing a forward-direction voltage of an LED and determining whether or not the LED is defective by comparing the forward-direction voltage with a comparative object voltage, wherein the comparative object voltage is continuously updated using a sensed forward-direction voltage so that the comparative object voltage may be set to be an unfixed value, that is, a value reflecting a current state of an LED. This allows a more accurate detection of a defect of an LED.