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:
Jan. 17, 1995
Filed:
Aug. 26, 1992
Masaki Shirai, Sayama, JP;
Hisahiro Moriuchi, Tanashi, JP;
Yasuhiro Yoshii, Kodaira, JP;
Kenichi Kuroda, Tachikawa, JP;
Akinori Matsuo, Higashiyamato, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi VLSI Engineering Corp., Tokyo, JP;
Abstract
A non-volatile memory element comprising a control gate formed by a diffusion layer, a floating gate comprising a conductive layer, the floating gate being partly overlapping with the control gate through a thin insulating layer, and a barrier layer formed to cover a part or the entire part of the floating gate is used as a defect remedy circuit for the memory circuit having read-only memory elements arranged in the form of a matrix for storing defective addresses corresponding to the word lines and bit lines and storing data corresponding thereto respectively.