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:
Jun. 10, 2014
Filed:
Oct. 02, 2012
Electronics and Telecommunications Research Institute, Daejeon, KR;
Konkuk University Industrial Cooperation Corp, Seoul, KR;
Jae Eun Pi, Seongnam-si, KR;
Kee Chan Park, Seongnam-si, KR;
Hong Kyun Leem, Seoul, KR;
Joon Dong Kim, Uiwang-si, KR;
Youn Kyung Kim, Daejeon, KR;
Ji Sun Kim, Yongin-si, KR;
Byoung Gon Yu, Chungcheongbuk-do, KR;
Sang Hee Park, Daejeon, KR;
Him Chan Oh, Seoul, KR;
Min Ki Ryu, Daejeon, KR;
Chi Sun Hwang, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Konkuk University Industrial Cooperation Corp., Seoul, KR;
Abstract
Disclosed is a DC voltage conversion circuit of a liquid crystal display apparatus, including: a main pumping circuit including a plurality of thin film transistors and configured to output voltage for driving a liquid crystal display apparatus when the plurality of thin film transistors are alternately turned on or off; and a switch control signal generator configured to control voltages applied to gates of the plurality of thin film transistors by inversion of a clock signal, in which each thin film transistor is turned on when positive gate-source voltage is applied thereto, and turned off when negative gate-source voltage is applied thereto.