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:
Oct. 28, 2008
Filed:
Jun. 20, 2007
Yu Jin Jang, Gyunggi-do, KR;
Byoung Own Min, Gyunggi-do, KR;
Sang Cheol Shin, Gyunggi-do, KR;
Jung Chul Gong, Seoul, KR;
Yu Jin Jang, Gyunggi-do, KR;
Byoung Own Min, Gyunggi-do, KR;
Sang Cheol Shin, Gyunggi-do, KR;
Jung Chul Gong, Seoul, KR;
Samsung Electro-Mechanics Co., Ltd., Gyunggi-Do, KR;
Abstract
A liquid crystal display backlight inverter including a first error amplifying unit receiving and comparing a first detection voltage corresponding to a current flowing through a lamp with a first preset reference voltage and outputting a first error voltage corresponding to an error therebetween; a second error amplifying unit receiving and comparing a second detection voltage corresponding to a voltage applied to the lamp with a second preset reference voltage and outputting a second error voltage corresponding to an error therebetween; a feedback selector selecting one of the outputs of the first and second error amplifying unit according to an error between the second detection voltage and a third preset reference voltage; and a lamp control pulse generator generating a pulse signal having a duty controlled according to one of the first error voltage and second error voltage.