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:
Feb. 24, 2009
Filed:
Nov. 28, 2006
Applicants:
Ji-ho Cho, Suwon-si, KR;
Sang-wan Nam, Suwon-si, KR;
Inventors:
Ji-ho Cho, Suwon-si, KR;
Sang-wan Nam, Suwon-si, KR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 11/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sense amplifier of a flash memory device maintains a bit line precharge level before a memory cell is sensed. The sense amplifier maintains the voltage of a bias signal sufficiently high using a second precharging circuit in a precharging operation to stably maintain the bit line precharge level set by a first precharging circuit. Accordingly, the sense amplifier can correctly sense an OFF cell using the stabilized bit line precharge voltage. Related methods and memory devices are also disclosed.