Resources Contact Us Home
Locally folded split level bitline wiring

Image Number 5 for United States Patent #6291335.

A method for fabricating a semiconductor memory with a split level folded bitline structure consisting of three contact levels, in accordance with the present invention includes forming gate structures for transistors in an array region and a support region of a substrate. First contacts are formed down to diffusion regions between the gate structures in the array region. The first contacts have a height which is substantially the same for all first contacts in the array region. Second contacts are formed between first level bitlines in the array region and a first portion of the first contacts, while forming second contacts to a first metal layer from the gate structures and diffusion regions in the support region. Third contacts are formed between second level bitlines in the array region and a second portion of the first contacts, while forming third contacts to a second metal layer from the first metal layer in the support region.

  Recently Added Patents
Vending machine
Dry-cooling unit with gravity-assisted coolant flow
Synergistic fungicidal interactions of 5-fluorocytosine and other fungicides
Image capturing apparatus, control method thereof, and program
Cylindrical lithium secondary battery comprising a contoured center pin
Configuration and incentive in event management environment providing an automated segmentation of consideration
Method and an apparatus for processing an audio signal
  Randomly Featured Patents
Configuration management utility
Fundus camera having curved mirror objective
Cosmetic formulation
Precipitated silicas
Method and apparatus for establishing communications with a remote node on a switched network based on hypertext dialing information received from a packet network
Methods for forming and integrated circuit structures containing enhanced-surface-area conductive layers
Pump body with insert for a breast pump
Preparation of varnishes based on polyester resin