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. 15, 1991
Filed:
Jul. 20, 1990
Applicant:
Inventors:
Assignee:
Casio Computer Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; G11C / ;
U.S. Cl.
CPC ...
357 235 ; 357 54 ; 357 41 ; 365184 ;
Abstract
A memory element manufactured by a thin film forming technique is disclosed. The memory element includes a gate electrode, a gate insulating film, a semiconductor layer, a source electrode, and a drain electrode. The gate insulating film is divided into memory and non-memory regions so that a memory transistor and a selection transistor are apparently formed in one transistor. Therefore, the element formation area of each memory element can be reduced, and the packing density can be increased.