Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
MONOS flash memory for multi-level logic and method thereof










Image Number 5 for United States Patent #6166410.

The present invention provides a structure and method of manufacturing split gate MONOS multi-level logic memory device. The memory device has a poly stacked gate transistor 20A in series with a MONOS transistor 24A. The device has a novel operation to achieve multi-level memory storage (e.g., 4 voltage states). The method begins by forming a tunnel oxide layer 30 on the surface of a semiconductor substrate 10. The substrate having a stacked gate channel area 20 and a MONOS channel area 24 in the active regions. A poly floating gate electrode 32 is formed over the stacked gate channel region 20. A ONO layer having a memory nitride layer is formed over the floating gate 32 and the tunnel oxide layer over the MONOS channel region 24. A control gate electrode 44 is formed over the ONO layer 41 spanning across the poly floating gate electrode 32 and the MONOS channel region 24. Source/drain regions 50 51 are formed in the substrate. A poly flash transistor 20A and a MONOS flash transistor 24A combine to form the 4 level logic memory cell of the invention.








 
 
  Recently Added Patents
Virtual appliance update method
Cantilever of scanning probe microscope and method for manufacturing the same, method for inspecting thermal assist type magnetic head device and its apparatus
Single well reservoir characterization apparatus and methods
Baseball themed hand clap maraca
Weighted determination in configuration management systems
Monitoring heap in real-time by a mobile agent to assess performance of virtual machine
Real-time pricing of shipping vendors
  Randomly Featured Patents
Liquid crystal display system having improved temperature compensation
Panel carrier
Method of integrally forming a bicycle front fork formed from a compound material
Thin film transistor device having driving circuit and matrix circuit
Stamper, imprinting method, and method of manufacturing an information recording medium
Quick reassignment of invalid forward traffic channels
Pigment ink composition and coating material
Packaging container
Current regulated field-emission device
Method and apparatus for determining signal path