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:
Dec. 20, 1988
Filed:
Feb. 01, 1988
Applicant:
Inventor:
Yukimasa Uchida, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 236 ; 357 2312 ; 357 41 ; 357 55 ; 365149 ;
Abstract
Disclosed is a semiconductor memory device which has a transfer transistor of a MOS structure on a surface of a semiconductor body, and a trenched capacitor having a groove which is formed so as to extend from a surface of the semiconductor body to a certain depth thereof and an electrode which is formed from a bottom portion of the groove to at least a level above an opening of the groove, the source region of the transfer transistor being connected to the electrode of the trenched capacitor and the drain region thereof being connected to a bit line.