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:
Nov. 03, 1987
Filed:
Apr. 11, 1986
Masao Nakano, Kawasaki, JP;
Yoshihiro Takemae, Tokyo, JP;
Kimiaki Sato, Tokyo, JP;
Nobumi Kodama, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
A booster circuit including a precharge capacitor (C.sub.2), a precharge driver circuit (20) having a first bootstrap circuit (C.sub.59, Q.sub.58, Q.sub.61) and precharging a voltage to the precharge capacitor in a reset mode, and an output driver circuit (19) having a switching circuit (Q.sub.21) for cutting off the output of the precharged voltage of the precharged capacitor in the reset mode and a second bootstrap circuit driving the switching circuit in an operation mode. The booster circuit further includes an additional switching circuit (Q.sub.1) for outputting a voltage to be superimposed onto the precharge voltage in the operation mode. The booster circuit may be applicable to a dynamic semiconductor memory device, for boosting a voltage of a word line at a high speed and for improving integration.