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. 14, 2007
Filed:
Feb. 10, 2005
Takashi Miida, Kanagawa, JP;
Takashi Miida, Kanagawa, JP;
Innotech Corporation, Kanagawa, JP;
Abstract
A semiconductor memory has plural cell transistors that are arranged in a matrix. The cell transistor comprises a silicon substrate, a control gate, a pair of electrically isolated floating gates. Plural projections are formed in the P type silicon substrate, and a pair of N type diffusion regions as the source and the drain is formed in both sides of the projection. The control gate faces the projection via a fourth insulation layer. The side surface of the floating gates faces the side surfaces of the projection via a first insulation layer, and faces the control gate via a third insulation layer. The floating gate faces the diffusion region via the first insulation layer.