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:
Jun. 20, 2006
Filed:
Dec. 28, 2004
Kwan-ju Koh, Kyunggido, KR;
Kwan-Ju Koh, Kyunggido, KR;
DongbuAnam Semiconductor Inc., Seoul, KR;
Abstract
Non-volatile memory device, and method for fabricating the same are disclosed. By forming floating gate trenches in memory regions and filling the trenches with floating gate material, a step height of a with the floating gate/ONO/control gate structure is reduced to the level of a gate in a logic block, and the upper gate structures do not cause a topology imbalance. By forming a tunnel insulating film in the floating gate trenches, edges of the floating gate are in contact with the tunnel insulating film and included in an effective charge area of the device. By reducing the step height of the nonvolatile memory device and including edges of the floating gate in the effective charge area, the completed device can effectively perform its regular operations, such as erasure, programming, and reading.