PHOTOENGRAVING PROCEDURES FOR SILICON DEVICE FABRICATION
Abstract
Photoengraving procedures are especially adaptable to the fabrication of solid-state electronic devices from silicon because they provide a convenient method for using the naturally occurring oxide layer to control the areas into which impurities can be diffused. A precision printer has been devised to register the so-called stepand-repeat transparencies, used in the photoengraving process, with appropriate areas of the silicon surface. By means of this device and selective etchants, it is possible to remove the oxide layer or to make shallow or comparatively deep etches into silicon over small and accurately specified areas. Examples of the results achieved thereby are discussed as they relate to silicon device fabrication.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 23, 1962
- Accession Number
- AD0273618
Entities
People
- C.h. Klute
- G.b. Wetzel
Organizations
- Harry Diamond Laboratories