Uses of uniaxially electrically conductive articles

Details Uses of uniaxially electrically conductive articles Uses of uniaxially electrically conductive articles

1995-06-06

1997-10-21

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

22818022, H05K 334

Patent

active

056782870

ABSTRACT:
Polymer (preferably polyimide) sheets with laser ablated through-holes plated with metal are used for making electrical connections to specified microcircuits, especially unbumped microchips and Tape Automated Bonding (TAB) articles. Bonding with different melting-point materials at opposite ends of the plated holes is disclosed. Preferred polyimides are those derived from polymerisation of 4-4'-biphenyldianhydride and (4,4'-diaminobiphenyl, or 4,4'-diaminobiphenylether, or phenylenediamine, preferably p-phenylenediamine).

REFERENCES:
patent: 3758705 (1973-09-01), Schmid
patent: 3832769 (1974-09-01), Olyphant
patent: 4169001 (1979-09-01), Kaiser
patent: 4252990 (1981-02-01), Sado
patent: 4332341 (1982-06-01), Minetti
patent: 4563543 (1986-01-01), Kershzanetal
patent: 4610758 (1986-09-01), Wilson
patent: 4622058 (1986-11-01), Leary-Renick
patent: 4630096 (1986-12-01), Drye
patent: 4642421 (1987-02-01), Dery
patent: 4649338 (1987-03-01), Dugan
patent: 4667219 (1987-05-01), Lee
patent: 4737112 (1988-04-01), Jin
patent: 4740657 (1988-04-01), Tsukagoshi
patent: 4783722 (1988-11-01), Osaki
patent: 4803595 (1989-02-01), Kraus
patent: 5051359 (1991-09-01), Arnio et al.

Affiliated with

Also associated with

Rating

Uses of uniaxially electrically conductive articles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Uses of uniaxially electrically conductive articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Uses of uniaxially electrically conductive articles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-997434