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. 23, 2005
Filed:
Feb. 23, 2004
Kimihiro Maemura, Suwa, JP;
Kimihiro Maemura, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A nonvolatile semiconductor memory device having a small layout area includes a memory cell array in which a plurality of memory cells are arranged in a row direction and a column direction, wherein each of the memory cells includes a source region, a drain region, a channel region between the source region and the drain region, a word gate and a select gate disposed to face the channel region, and a nonvolatile memory element formed between the word gate and the channel region, wherein the wordline-and-selectline-driver-section includes a plurality of unit wordline-and-selectline-driver-sections, and wherein each of the unit wordline-and-selectline driver sections drives the select gates and the word gates of the memory cells in each row at a single potential.