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. 20, 2004
Filed:
Sep. 19, 2002
Applicant:
Inventors:
Michael Jacob, Kanagawa, JP;
Andreas Hilliger, Kanagawa, JP;
Thomas Roehr, Kanagawa, JP;
Susumo Shuto, Tokyo, JP;
Toru Ozaki, Tokyo, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/976 ;
U.S. Cl.
CPC ...
H01L 2/976 ;
Abstract
An improved cell design for series memory architecture is disclosed. The improved cell design facilitates the formation of capacitors using a single etch process instead of two, as conventionally required. In one embodiment, each capacitor of a capacitor pair is provided with at least one plug contacting a common diffusion region of two adjacent cell transistors. In another embodiment, a large plug with sufficient overlap to the bottom electrodes of pair of capacitors is used.