Printed circuit board

Details Printed circuit board Printed circuit board

1989-05-19

1990-09-25

Nimmo, Morris H.

Electricity: conductors and insulators

Conduits, cables or conductors

Preformed panel circuit arrangement

29854, 174257, 361403, H05K 100

Patent

active

049595105

ABSTRACT:
In a printed circuit board having a glass substrate, signal line conductors having uniform resistances are formed of a thin film of ITO or SnO.sub.2 alone, while a power supply conductor whose voltage drop is small is formed of a film of ITO or SnO.sub.2, a film of Ni plating, a film of Au plating and a thick film of metal formed of plating or paste. Bonding pads are formed of a thin film of ITO or SnO.sub.2, a film of Ni plating and a film of Au plating.

REFERENCES:
patent: 3902790 (1975-09-01), Hsieh et al.
patent: 3936930 (1976-02-01), Stern
patent: 4227039 (1980-10-01), Shibasaki et al.
patent: 4835061 (1989-05-01), Ohta et al.

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