Resources Contact Us Home
Method for producing transistors

Image Number 15 for United States Patent #7271070.

The invention relates to a method for producing integrable semiconductor components, especially transistors or logic gates, using a p-doped semiconductor substrate. First of all, a mask is applied to the semiconductor substrate in order to define a window that is delimited by a peripheral edge. An n-doped trough is then produced in the semiconductor substrate by means of ion implantation using an energy that is sufficient for ensuring that a p-doped inner area remains on the surface of the semiconductor substrate. The edge area of the n-doped trough extends as far as the surface of the semiconductor substrate. The other n-doped and/or p-doped areas that make up the structure of the transistor or logic gate are then inserted into the p-doped inner area of the semiconductor substrate. The inventive method is advantageous in that it no longer comprises expensive epitaxy and insulation processes. In an n-doped semiconductor substrate, all of the implanted ions are replaced by the complementary species; i.e. n is exchanged for p and vice versa.

  Recently Added Patents
Method and apparatus for increasing query traffic to a web site
Laser marking of a card
Treatment devices with deliver-activated inflatable members, and associated systems and methods for treating the spinal cord and other tissues
Categorizing bit errors of solid-state, non-volatile memory
Center spreader adapter tool for toilet paper rolls and paper towel rolls that do not have inner cardboard tubes
Terminal box assembly
  Randomly Featured Patents
Electric iron
Composition suitable for use in cleaning panes of glass
Optically active ester derivatives, preparation process thereof, liquid crystal materials and a light switching element
Method for the non-invasive optic determination of the temperature of a medium
Ink jet nozzle assembly including a fluidic seal
Process and circuit for compensating changes
Method and apparatus for performing personalization based on classification
Foldout cradle apparatus for mounting an automatic cannon to a turret exterior
Interface controller that has flexible configurability and low cost