United States Patent 3,546,013
December 8, 1970

Method of Providing Protective Coverings for Semiconductors
John A. Perri
Jacob Riseman

Filed September 29, 1961
Image of US PATENT 3,546,013

Abstract of the Disclosure

A method of providing a protective covering for a semiconductor member having at least a portion of a PN junction extending to the surface thereof which includes the steps of (1) establishing on the surface an adherent metal oxide having a thickness in the range of 1,000 to 30,000 angstroms and (2) forming a glass coating over the metal oxide film.
Figure descriptions: cover graphic

  • Figures 1(a)-1(e) are sectional views representing a portion of an array of semiconductor devices during various steps in the manufacture thereof.

 Citations [54]:
2,961,350 11/1960 Flaschen et al
National Museum of American History
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