Printed wiring board

Details Printed wiring board Printed wiring board

1978-12-07

1980-09-02

Kucia, Richard R.

Electricity: conductors and insulators

Conduits, cables or conductors

Single duct conduits

361402, H05K 100

Patent

active

042208106

ABSTRACT:
A new and unique printed wiring board completely free from trouble of solder bridging that often takes place with the conventional printed wiring board. The printed wiring board of the present invention is provided with a raised portion of solder resist ink in the form of a ridge around the periphery of the land to be printed or at an area between adjacent lands to be soldered, the said raised portion being an extension of a solder resist thin layer coated on the insulator base board exclusive the said land.

REFERENCES:
patent: Re29784 (1978-09-01), Chadwick
patent: 2990310 (1961-06-01), Chan
patent: 3042591 (1962-07-01), Cado
patent: 3610811 (1971-10-01), O'Keefe
patent: 3691632 (1972-09-01), Smith
patent: 4104111 (1978-08-01), Mack
Haddad et al., Printed Circuits with Diverse Metallic Topography, IBM Tech. Dis. Bull., vol. 13, #1, Jun. 1970, pp. 124 & 125.

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