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. 27, 1990
Filed:
Apr. 21, 1988
Hideo Kato, Kawasaki, JP;
Hiroshi Iwahashi, Yokohama, JP;
Masamichi Asano, Tokyo, JP;
Akira Narita, Kawasaki, JP;
Shinichi Kikuchi, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A sub-booster circuit for further stepping up an output voltage of a main booster circuit includes a first MOS transistor having a drain connected to the output terminal of the main booster circuit, and a gate connected to an input terminal of an object circuit, a second MOS transistor having a drain and a gate connected to the source of the first MOS transistor and a source connected to the input terminal of the object circuit, and a MOS capacitor having a first electrode connected to a connection node between the first and second MOS transistors and a second electrode connected to receive a clock pulse signal. A threshold voltage of the second MOS transistor is set to be larger in its absolute value than a threshold voltage of the first MOS transistor and the MOS capacitor has substantially the same threshold voltage as that of the second MOS transistor.