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. 11, 2004
Filed:
Sep. 18, 2001
Applicant:
Inventors:
Ching-Hsiang Hsu, Hsinchu, TW;
Ching-Song Yang, Chang-Hua Hsien, TW;
Assignee:
eMemory Technology Inc., Hsin-Chu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 1/604 ;
U.S. Cl.
CPC ...
G11C 1/604 ;
Abstract
A non-volatile semiconductor memory device having divided bit lines. A main bit line is controlled by at least one bit line selection device to transfer its potential to a selected sub bit line, such that memory cells in a selected sector work and overloading of the bit line generated by a parasitic capacitance can be prevented. The memory cells and the bit line selection device are arranged in parallel in a P-well and a N-well, respectively, thereby preventing disturbances during programming or erasing the bit line.