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
Method and system for imaging a cross section of a specimen
Pointing device, display apparatus and pointing system, and location data generation method and display method using the same
Magnetic disk and manufacturing method thereof
Integrated circuit packaging system with laser hole and method of manufacture thereof
Systems and methods to provide report part via a web service
Method and system for monitoring service quality in a mobile node
Method of isolating human neuroepithelial precursor cells from human fetal tissue
  Randomly Featured Patents
Method, device and system for managing contents of VOD services
Method for the formation of a frangible zone for the fracture separation of a machine part, in particular, a connecting rod for internal combustion engines
Method for implementing an engineering change across fab facilities
Cassette tape display case
Quickly erectable antenna support structure
Control circuit for controlling output current at the primary side of a power converter
System for guiding a missile by light beam
Electronic lock
Apparatus and method for generating digest according to hierarchical structure of topic
Laser induced flow Ge-O based materials