Resources Contact Us Home
Semiconductor memory device and fabrication thereof

Image Number 3 for United States Patent #7332390.

A semiconductor memory device and fabrication method thereof. In a semiconductor memory device, each memory cell comprises a deep trench and a capacitor disposed on the lower portion thereof. A collar oxide layer having a first second sidewalls is disposed on the deep trench. The top of the first sidewall is at the same height as the surface of the semiconductor substrate. The top of the second sidewall is substantially equal to the top of the capacitor. The memory cell further comprises a buried conductor layer disposed on the second sidewall and the capacitor and a buried strap adjoining the buried conductive layer, and a transistor disposed on the surface of the semiconductor substrate and electrically connected to the capacitor through the buried strap and the buried conductive layer.

  Recently Added Patents
Method and apparatus for allocating and obtaining IP address
System for purifying air through germicidal irradiation and method of manufacture
Developing device
Method and system for triggering message waiting indicator delivery
Safety device and method for electric heating appliances
System, apparatus, and method for fast startup of USB devices
Firewall-tolerant voice-over-internet-protocol (VoIP) emulating SSL or HTTP sessions embedding voice data in cookies
  Randomly Featured Patents
Automated sample preparation workstation for the vapor diffusion method of crystallization and method of preparation
Bottle or the like
Data reproducing apparatus, content management method, program, and storage medium
Encapsulated basketball backboard
Storage unit module
Apparatus and method pertaining to provision of a substantially unique aircraft identifier via a source of power
Compliant composite tubular liners of fiber reinforced glass/glass-ceramic having utility as gun barrel liners
Managing application programs in a computer network by using a database of application objects
Utilizing instant messaging to effectuate structured communication