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:
Jul. 05, 2005
Filed:
May. 11, 2004
Applicants:
Chih-wei Hung, Hsin-chu, TW;
Da Sung, Hsinchu, TW;
Cheng-yuan Hsu, Hsinchu, TW;
Inventors:
Assignee:
Powerchip Semiconductor Corp., Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C016/04 ;
U.S. Cl.
CPC ...
Abstract
A flash memory structure is provided. The flash memory structure includes a P-type substrate, a deep N-well set up within the P-type substrate, a P-well set up within the deep N-well, a pair of gate structures set up over the substrate, a select gate set up between the pair of gate structure and N-type source/drain regions in the P-well on each side of the gate structure. Since each pair of neighboring gate structure uses a common gate, the level of integration of device can be increased.