Method of manufacturing intergrated injection logic semiconductor devices utilizing self-aligned double-diffusion techniques
First Claim
1. A method of manufacturing an integrated injection logic semiconductor device in a selected portion of a semiconductor layer comprising the steps of forming the semiconductor layer of the opposite conductivity type on a semiconductor substrate of one conductivity type;
- forming an insulation film on said semiconductor of the opposite conductivity type;
forming first, second and third openings through said insulation film;
doping an impurity of said one conductivity type through said first opening thereby forming a first one conductivity type region;
doping an impurity of the opposite conductivity type into said semiconductor layer of said opposite conductivity type through said first and second openings in an oxidizing atmosphere thereby forming first and second opposite conductivity type regions respectively completely within said first one conductivity type region and in said selected portion of said semiconductor layer of the opposite conductivity type; and
doping an impurity of said one conductivity type into said selected portion of the semiconductor layer of the opposite conductivity type through said third opening in an oxidizing atmosphere thereby forming a second one conductivity type region in said semiconductor layer.
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Abstract
A P type semiconductor layer is formed on an N type semiconductor layer by vapor epitaxial growth technique, an insulating film is formed on the P type semiconductor layer and a grid shape first opening is provided through the insulating film. Then, phosphorus is diffused into the P type semiconductor layer through the grid shape opening to form a first N type region extending through the semiconductor layer to reach the N type semiconductor layer. Then, second openings are formed through respective sections of the insulating film divided by and surrounded by the grid shape first opening and boron is diffused through the first and second openings to form first and second P type regions in the grid shape first N type region and the P type semiconductor layer, respectively. Finally, third openings are formed through respective portions of the insulating film and phosphorus is diffused into the P type semiconductor layer through the third openings to form second N type regions thereby forming an integrated injection logic semiconductor device including a lateral PNP transistor and a vertical NPN transistor.
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Citations
8 Claims
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1. A method of manufacturing an integrated injection logic semiconductor device in a selected portion of a semiconductor layer comprising the steps of forming the semiconductor layer of the opposite conductivity type on a semiconductor substrate of one conductivity type;
- forming an insulation film on said semiconductor of the opposite conductivity type;
forming first, second and third openings through said insulation film;
doping an impurity of said one conductivity type through said first opening thereby forming a first one conductivity type region;
doping an impurity of the opposite conductivity type into said semiconductor layer of said opposite conductivity type through said first and second openings in an oxidizing atmosphere thereby forming first and second opposite conductivity type regions respectively completely within said first one conductivity type region and in said selected portion of said semiconductor layer of the opposite conductivity type; and
doping an impurity of said one conductivity type into said selected portion of the semiconductor layer of the opposite conductivity type through said third opening in an oxidizing atmosphere thereby forming a second one conductivity type region in said semiconductor layer. - View Dependent Claims (2)
- forming an insulation film on said semiconductor of the opposite conductivity type;
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3. A method of manufacturing an integrated injection logic semiconductor device in a selected portion of a semiconductor layer comprising the steps of forming the semiconductor layer of the opposite conductivity type on a semiconductor substrate of one conductivity type;
- forming an insulation film on said semiconductor layer of the opposite conductivity type;
forming first, second and third openings through said insulation film;
doping an impurity of said one conductivity type into said semiconductor layer of the opposite conductivity type through said first opening thereby forming a first one conductivity type region;
doping an impurity of the opposite conductivity type into said semiconductor layer of said opposite conductivity type through said first and second openings in an oxidizing atmosphere thereby forming first and second opposite conductivity type regions respectively completely within said first one conductivity type region and in said selected portion of said semiconductor layer of the opposite conductivity type; and
doping an impurity of said one conductivity type into said selected portion of the semiconductor layer of the opposite conductivity type through said third opening in an oxidizing atmosphere thereby forming a second one conductivity type region in said semiconductor layer. - View Dependent Claims (4, 5, 6, 7, 8)
- forming an insulation film on said semiconductor layer of the opposite conductivity type;
Specification