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:
Dec. 25, 2007
Filed:
Apr. 07, 2006
Shin-jang Shen, Hsinchu, TW;
Fu-chia Shone, HsinChu, TW;
Shin-Jang Shen, Hsinchu, TW;
Fu-Chia Shone, HsinChu, TW;
Skymedi Corporation, Hsinchu, TW;
Abstract
A method for erasing data of a flash memory is disclosed. The flash memory includes a plurality of memory cells coupled to a word line, where each of the memory cells has a substrate, an isolated carrier storage layer, and a control gate coupled to the word line. And the method includes: coupling the substrate to a first voltage to increase a voltage level of the substrate; before erasing data, floating the control gate to make a voltage level of the control gate increase with the voltage level of the substrate; and coupling the control gate to a second voltage via the word line to discharge charges on the isolated carrier storage layer for erasing data.