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:
May. 25, 2004
Filed:
Jan. 06, 2003
Applicant:
Inventor:
Erik S. Jeng, Taipei, TW;
Assignee:
Applied Intellectual Properties Co., Ltd., Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/9788 ;
U.S. Cl.
CPC ...
H01L 2/9788 ;
Abstract
A nonvolatile memory capable of storing multi-bits binary information is provide. The memory includes an oxide formed on a substrate. A control gate is formed on the oxide. An L-shape structure is attached on sidewall of the control gate. Spacers are formed on the L-shape structure to act as a floating gate. A first doped region and a second doped region is formed in the substrate adjacent to the spacers with a channel between the two doped regions. Wherein the spacers represent a first binary status by injecting and storing electrical charges in the spacers. Or to represent a second binary status by not injecting electrical charges into the spacer.