Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Keun Woo Lee0
Date of Patent
April 15, 2008
Patent Application Number
11275273
Date Filed
December 21, 2005
Patent Primary Examiner
Patent abstract
A floating gate of a flash memory device is formed in a moat formed in an isolation film. Therefore, an electric field applied between a control gate and a channel region upon cycling can be precluded or mitigated. A distance between the control gate and the channel region is set greater than a predetermined value. Therefore, an electric field applied between the control gate and the channel region upon cycling can be mitigated. As a result, a data retention characteristic and an endurance characteristic can be improved.
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