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. 11, 2006
Filed:
Oct. 20, 2004
Yuan Wei Zheng, Shanghai, CN;
Meng Yu Pan, Shanghai, CN;
Julian Chang, Shanghai, CN;
Grace Semicoductor Manufacturing Corporation, Shanghai, CN;
Abstract
A sense amplifier for Mask Read Only Memory comprising a multiplexer, a plurality of comparators, a plurality of first selected transistors, and a plurality of second selected transistors. The gates of both first selected transistor and second selected transistor are connected to a word line select. One doping area of the first selected transistor is connected to the multiplexer for generating a plurality of signals, and another doping area is connected to a selected bit line. One doping area of each of the second selected transistor is connected to each of the comparators, and another doping area is connected to an external voltage. A cell voltage status is determined when each of the signals and one of doping areas of the second selected transistors are connected to each of the comparators.