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. 03, 2004
Filed:
Mar. 13, 2002
Applicant:
Inventors:
Assignee:
eMemory Technology Inc., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 2/900 ;
U.S. Cl.
CPC ...
H01L 2/900 ;
Abstract
A non-volatile semiconductor memory cell structure and method of manufacture. The method includes the steps of forming a shallow first-type well layer, a second-type well layer and a deep first-type well layer over a substrate, forming stack gates over the shallow first-type well layer and finally forming source terminals and drain terminals. The source terminals penetrate through the shallow first-type well layer and connect with the second-type well layer. The drain terminals are close to the surface of the shallow first-type well layer. Both the source terminals and the drain terminals contain second type dopants.