The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 1984
Filed:
Nov. 14, 1977
Kim Ritchie, Phoenix, AZ (US);
James N Smith, Tempe, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A desiccant for semiconductor packaging which may be applied in liquid form consists essentially of approximately 60% by weight absolute ethyl alcohol, 25% by weight ethyl acetate, 5% by weight water, 5% by weight a source of boron, aluminum or phosphorus and 5% by weight of an organic silane having the structural formula: ##STR1## where R.sub.1 is a radical selected from the group consisting of H.sup.-, CH.sub.2 .dbd.CH.sup.-, CH.sub.3 O.sup.-, C.sub.2 H.sub.5 O.sup.-, CH.sub.3 CO.sub.2 .sup.-, C.sub.2 H.sub.5 CO.sup.-, and C.sub.3 H.sub.7 O.sup.-, and R is a radical selected from the group consisting of CH.sub.3 O.sup.-, C.sub.2 H.sub.5 O.sup.-, C.sub.3 H.sub.7 O.sup.-, CH.sub.3 CO.sub.2.sup.-, C.sub.2 H.sub.5 CO.sub.2.sup.-, Si.sup.+, OH.sup.-, and O.sup.-. The sources of boron, aluminum, and phosphorus may be halides, oxides or nitrates. Also a process for incorporating the foregoing into semiconductor package and process for formulating the above solution.