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:
Oct. 13, 1987
Filed:
Oct. 13, 1987
Toshio Yamada, Hirakata, JP;
Hideya Esaki, Toyonaka, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
A semiconductive memory in accordance with the present invention enables the correct setting of the reference electrical potential of a DRAM which is not affected by manufacturing processes by the use of a construction such that, into two dummy cell capacitors having the same capacitance as that of memory cell capacitors for holding information, signals of '1' and '0' or '0' and '1' are respectively written from the first and the second bit lines; thereafter, two dummy cell capacitors are electrically decoupled from the two bit lines and, then, by coupling two dummy cell capacitors, reference charges are obtained, which are then read out.