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. 15, 2016
Filed:
Jan. 16, 2014
Capital Microelectronics Co., Ltd., Beijing, CN;
Rifeng Mai, Beijing, CN;
CAPITAL MICROELECTRONICS CO., LTD., Beijing, CN;
Abstract
Embodiments of the present invention disclose a level up shifter circuit. The level up shifter circuit further includes two field effect transistors connected in series and a control circuit. Sources of the two field effect transistors and a source of a sixth field effect transistor are respectively connected to a drain of a first field effect transistor and a drain of a second field effect transistor of the conversion circuit, and the control circuit is turned on when a first voltage signal and a third voltage signal are zero at the same time and is turned off in other situations. The level up shifter circuit according to the embodiments of the present invention can effectively solve the problem that an output state is unknown.