Resources Contact Us Home
Inverted groove isolation technique for merging dielectrically isolated semiconductor devices

Image Number 2 for United States Patent #4982262.

An area saving dielectrically isolated semiconductor structure is disclosed which allows for the merger of a plurality of active devices, which share a common terminal, in a single dielectrically isolated (DI) island, or tub. In particular, an isolation groove is formed in the bottom of the DI tub and extends upwards toward the top surface of the semiconductor structure. The common diffusion region associated with the common terminal is located in the DI tub directly over the isolation groove. The isolation groove and common diffusion region thus separate the single DI tub into isolated sections, where a separate active device can be formed in each section. Isolation is achieved through the interaction of the groove with the common diffusion region to "pinch off" the conductive channel between devices in the DI tub. In a preferred embodiment, an inverted V-shaped isolation groove is utilized so as not to complicate the fabrication process. In order to merge a large plurality of devices in a single DI tub, a plurality of isolation grooves may be utilized to divide the single DI tub into a number of separate isolated sections.

  Recently Added Patents
Methods and devices for multiple-mode radio frequency synthesizers
Login security with short messaging
Downlink scheduling in fractional frequency reuse (FFR) systems
Pharmaceutical compositions of paclitaxel, paclitaxel analogs or paclitaxel conjugates and related methods of preparation and use
Primed stem cells and uses thereof to treat inflammatory conditions in joints
Image sensing apparatus and method of controlling the image sensing apparatus
Process for preparation of Efavirenz
  Randomly Featured Patents
Extendable sunshade for child car seat
Miniature, low-power X-ray tube using a microchannel electron generator electron source
Nonvolatile memory system, semiconductor memory, and writing method
Process for the preparation of a metal-organic compound comprising a spectator ligand
Atmospheric pressure ion sources
Paperboard liquid container
Surgical instrument for cutting-out a cranial disc from the cranial bone
Mechanical actuator
Anti-vibration support for steam generator heat transfer tubes and method for making same
Low background flux telescope with integrated baffle