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:
Oct. 15, 2021
Applicant:
Lx Semicon Co., Ltd., Daejeon, KR;
Inventors:
Ji Hwan Kim, Daejeon, KR;
Jang Su Kim, Daejeon, KR;
Assignee:
LX SEMICON CO., LTD., Daejeon, KR;
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/32 (2016.01);
U.S. Cl.
CPC ...
G09G 3/32 (2013.01); G09G 2320/064 (2013.01);
Abstract
An embodiment relates to an LED driving technique. The embodiment provides a technique of measuring a forward voltage reaching time of a currently driven LED by comparing a forward voltage sensed in a previous scan line and an LED voltage sensed in a current scan line, and compensating an ON period of a pulse width modulation (PWM) signal by the measured forward voltage reaching time.