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:
Sep. 23, 2008
Filed:
Nov. 01, 2005
Doo-sub Lee, Suwon-si, KR;
Seung-keun Lee, Yongin-si, KR;
Doo-Sub Lee, Suwon-si, KR;
Seung-Keun Lee, Yongin-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Abstract
A nonvolatile semiconductor memory device includes a memory cell array of a plurality of memory cells; and a voltage generating circuit for generating a programming voltage to be applied to the memory cells. The voltage generating circuit includes a first voltage generating unit for generating a negative voltage through a first charge pump; and a second voltage generating unit for generating a positive voltage through a second charge pump. During an accelerated programming operation, the first voltage generating unit increases a pumping efficiency of the first charge pump using an external power supply voltage, and the second voltage generating unit directly outputs the external power supply voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile