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:
Aug. 07, 2001
Filed:
Jan. 14, 1998
Applicant:
Inventors:
Min-Liang Chen, Hsinchu, TW;
Nan-Hsiung Tsai, Hsinchu, TW;
Assignee:
Mosel Vitelic, Inc., Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/7108 ; H01L 2/976 ;
U.S. Cl.
CPC ...
H01L 2/7108 ; H01L 2/976 ;
Abstract
A dynamic random access memory (DRAM) integrated circuit (,). The DRAM (,) includes a recessed region (,) defined in a semiconductor substrate (,). This recessed region has substantially vertical sides (,) extending from a bottom surface (,). A field effect transistor (,) is defined adjacent to the recessed region (,). A capacitor structure, including a lower capacitor plate (,), a capacitor dielectric (,), and an upper capacitor plate (,), is defined in the recessed region (,) and over the field effect transistor (,), thereby providing a greater capacitor surface.