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. 05, 2008
Filed:
Jul. 28, 2005
Chih Chieh Yeh, Taipei, TW;
Wen Jer Tsai, Hualien, TW;
Tao Cheng LU, Hsinchu, TW;
Macronix International Co., Ltd., Hsinchu, TW;
Abstract
A memory cell with a charge trapping structure is operated by measuring current between the substrate region of the memory cell and at least one of the source region of the memory cell and the drain region of the memory cell. The read operation decreases the coupling between different parts of the charge trapping structure when other parts of the charge trapping structure store data that are not of interest. The sensing window of the memory cell can be greatly improved by this read operation. The memory cell is erased by increasing the net positive charge on the memory cell and programmed by increasing the net negative charge on the memory cell.