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:
Apr. 27, 2004
Filed:
Dec. 05, 2001
Kyung Joon Han, Palo Alto, CA (US);
Joo Weon Park, Pleasanton, CA (US);
Gyu-Wan Kwon, Cupertino, CA (US);
Dung Tran, San Jose, CA (US);
Steve K. Hsia, San Jose, CA (US);
Jong Seuk Lee, Palo Alto, CA (US);
Dae Hyun Kim, Fremont, CA (US);
NexFlash Technologies, Inc., San Jose, CA (US);
Abstract
A convergence signal includes a series of voltage pulses used to perform a convergence procedure in one or more flash EEPROM memory cells (transistors). In one instance subsequent voltage pulses in the convergence signal each have a higher voltage than the preceding pulse. In another instance, subsequent voltage pulses in the convergence signal each have a longer duration than the preceding pulse. An integrated circuit includes an array of memory cells and an erase control unit which controls the application of the convergence signal to one or more memory cells. The integrated circuit may be either serial or parallel flash EEPROM in which bulk, sector, or page mode erasing is used.