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:
Feb. 03, 2015
Filed:
Jul. 17, 2012
Jungjae Kim, Gyeonggi-do, KR;
Soondong Cho, Gyeongbuk, KR;
Jungjae Kim, Gyeonggi-do, KR;
Soondong Cho, Gyeongbuk, KR;
LG Display Co., Ltd., Seoul, KR;
Abstract
A liquid crystal display comprises: a liquid crystal panel; LED strings connected to an output terminal of a DC power source and providing light to the liquid crystal panel; transistors whose collector electrodes are connected to cathodes of LEDs positioned at the lowermost stages of the LED strings, and whose emitter electrodes are connected to monitor resistors; and an LED driver which has first pins respectively connected to base electrodes of the transistors to supply driving signals and second pins connected between the emitter electrodes of the transistors and monitor resistors, wherein the first pins sense voltages of the base electrodes of the transistors to detect a short in an LED, wherein the LED driver comprises driving signal supply portions for supplying the driving signal and short sensing portions for detecting the presence or absence of a short in the LED.