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. 03, 2009
Filed:
Apr. 30, 2007
Yi Ying Liao, Taipei, TW;
Chih Chieh Yeh, Taipei, TW;
Wen Jer Tsai, Hualien, TW;
Tao Cheng LU, Hsinchu, TW;
Yi Ying Liao, Taipei, TW;
Chih Chieh Yeh, Taipei, TW;
Wen Jer Tsai, Hualien, TW;
Tao Cheng Lu, Hsinchu, TW;
Macronix International Co., Ltd., Hsinchu, TW;
Abstract
Charge trapping memory cells are protected from over-erasing in response to an erase command. For example, in response to an erase command, one bias arrangement is applied to program charge trapping memory cells, and another bias arrangement is applied to erase the charge trapping memory cells, such that the charge trapping memory cells have a higher net electron charge, in the erased state than i.n the programmed state. In another example, an integrated circuit with an array of charge trapping memory cells has logic which responds to an erase command by applying similar bias arrangements to the charge trapping memory cells. In a further example, such an integrated circuit is manufactured.