Copper conductive paint for porcelainized metal substrates
AssigneeCTS Corporation
InventorsCharles C. Y. Kuo, Terry R. Bloom
Life of this patent
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Abstract
A copper conductive paint for use on a porcelanized metal substrate, which comprises a powder mixture of 82 to 98.5% copper, 0.5 to 12% copper hydroxide, and 1 to 6% non-reducable borosilicate glass frit. 75 to 90 percent of the powder mixture is blended with 10 to 25 percent screening agent to form the copper conductive paint herein disclosed. The copper conductive paint is then screened and fired upon a porcelainized metal substrate in an inert atmosphere at approximately 900.degree. C. to form a copper conductor exhibiting improved adhesion characteristics.
Claims20
A thick film copper conductive paint suitable for firing upon a high temperature porcelainized metal substrate, which comprises:
- a copper conductive powder mixture with 82 to 98.5 percent copper powder, 0.5 to 12 percent copper hydroxide, and 1 to 6 percent non-reducible borosilicate glass frit, wherein 75 to 90 percent of the powder mixture is blended with 10 to 25 percent screening agent to form the copper conductive paint.
A thick film base metal copper conductive paint for screening and firing upon a porcelainized metal substrate, which comprises:
- a mixture of 82 to 98.5 percent Cu powder, from 0.5% to 12% Cu(OH).sub.2 and from 1 to 6% non-reducible borosilicate glass frit;
- the mixture blended with a screening agent to form the copper conductive paint therefrom.
A thick film base metal copper conductor, which comprises:
- (a) a high temperature porcelainized metal substrate;
- (b) a copper conductive paint blended from a screening agent and a powder mixture, the powder mixture comprising 82 to 98.5 percent copper powder, from 0.5% to 12 percent copper hydroxide, and from 1 to 6 percent non-reducible borosilicate glass frit;
- (c) a means to screen the copper conductive paint in a conductive pattern upon the high temperature porcelainized metal substrate;
- and
- (d) a means to fire the screened substrate in an inert atmosphere at a temperature of approximately 900.degree. C.
Dependencies are inferred from the claim text.