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. 18, 2000
Filed:
Aug. 28, 1998
Applicant:
Inventors:
Tae Hum Yang, Seoul, KR;
Joo Young Kim, Seoul, KR;
Young Dong Joo, Kyungki-Do, KR;
Jong Bae Jeong, Kyungki-Do, KR;
Jong Seuk Lee, Kyungki-Do, KR;
Il Hyun Choi, Seoul, KR;
Mun Pyo Hong, Kyungki-Dol, KR;
Chae Hyun Jung, Kyungsangbuk-Do, KR;
Assignee:
Hyundai Electronics Industries Co., Ltd., Ichon-Shi, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518518 ; 36518518 ; 36518519 ; 36518527 ; 36518529 ; 36518523 ;
Abstract
The present invention discloses a flash memory device, a first well and second well are formed in a substrate, a plurality of memory cell are formed in the second well and arranged in an array having a multiplicity of bit lines and word lines. Voltage is applied to the first well and second well, respectively, with time interval so that an over erasing of the memory cell and lowering of cycling characteristic can be prevented.