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:
Apr. 18, 1978
Filed:
May. 26, 1976
Kunihiko Ikuzaki, Hinodemachi, JA;
Tsuneo Ito, Kodaira, JA;
Masamichi Ishihara, Tachikawa, JA;
Takashi Sato, Kodaira, JA;
Hitachi, Ltd., , JA;
Abstract
In a n-channel (or p-channel) random access memory in which a plurality of memory cells are arranged in a matrix form in a p-type (or n-type) semiconductor substrate, clamping MOSFET's are connected between word lines provided for the associated rows of memory cells of the matrix and a reference potential to which gates the source electrodes of the information storing MOSFET's of the memory cells are connected. The clamping MOSFET has a lower threshold voltage than a row selecting MOSFET connected to the word line and clamps the word line when the word line is not selected, so that a delay in the read-out operation is eliminated or suppressed.