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:
Dec. 22, 2015
Filed:
Nov. 18, 2013
Lg Display Co., Ltd., Seoul, KR;
Min-Kyu Kim, Gyeonggi-do, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
A backlight driver and a method of driving the same are disclosed. The backlight driver includes a vertical synchronization signal filter for generating a second vertical synchronization signal based on an input first vertical synchronization signal, and selecting one of the first vertical synchronization signal and the second vertical synchronization signal as a third vertical synchronization signal according to whether a period difference between adjacent first vertical synchronization signals satisfies a preset threshold range, a duty ratio detector for detecting a duty ratio of an input pulse width modulation (PWM) signal, a PWM generator for generating an output PWM signal synchronized with the third vertical synchronization signal output from the vertical synchronization signal filter and having the duty ratio and outputting the output PWM signal to a backlight unit.