Graded composition primer layer

Details Graded composition primer layer Graded composition primer layer

1988-10-28

1990-04-17

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Having composition, density, or hardness gradient

428621, 428626, 428630, 428666, 428674, 428675, 428901, 20419215, 20419217, B32B 1504, C23C 1414

Patent

active

049179632

ABSTRACT:
Bonding between a metallic conductor and a substrate is improved by using a primer layer having a graded composition which continuously varies from a composition predominant in a metal which bonds well to the substrate at the substrate-primer layer interface to a composition predominant in the metal of the conductor at the conductor-primer layer interface. Specifically, the bonding characteristics of copper to polyimide substrate are improved by using a chromium-copper graded composition primer layer which is chromium-rich at the substrate-primer layer interface and copper-rich at the conductor-primer layer interface.

REFERENCES:
patent: 3097329 (1963-07-01), Siemens
patent: 3324019 (1967-06-01), Laegreid et al.
patent: 3530055 (1970-09-01), Maissel et al.
patent: 4035276 (1977-07-01), Havas et al.
patent: 4060471 (1977-11-01), Pinch et al.
patent: 4322276 (1982-03-01), Meckel et al.
patent: 4512863 (1985-04-01), Criss et al.
patent: 4731172 (1988-03-01), Adachi et al.
Hoitt et al., "Metalized Film Flex Circuits Yield Fine Lines," Electronic Packaging & Production, Jun. 1988.
Coutts, Thin Solid Films 4, (1969).
Campbell, "Mechanical Properties of Thin Films", Handbood of Thin Film Tech., Maissel & Glang, Eds., Chapt. 12 (mcGraw Hill 1970).
McIntyre et al., J. Vac. Sci. Technol. A6, 1708 (1988).

Affiliated with

Also associated with

Rating

Graded composition primer layer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Graded composition primer layer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Graded composition primer layer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1052052