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. 05, 2001
Filed:
Sep. 15, 1998
Hironori Nakamura, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A level shift circuit has plural level shift stages connected in series between an input node and an output node for producing an output signal, and a first level shift stage, an intermediate level shift stage and a final level shift stage produce a first intermediate signal changed between a positive power level and a first negative level from an input signal changed between the positive power level and the ground level, a second intermediate signal changed between the ground level and the first negative level from the first intermediate signal and an output signal changed between the ground level and a second negative level twice large in absolute value than the first negative level, thereby preventing the component field effect transistors from the large potential difference between the positive power level and the second negative level.