Printed circuit board
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United States of America Patent
Stats
-
Jul 21, 1992
Grant Date -
N/A
app pub date -
Mar 26, 1991
filing date -
Mar 26, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A printed circuit board includes a substrate, a printed electric circuit pattern formed on the surface of the substrate, a plurality of land patterns formed on end portions of the printed electric circuit pattern, an isolation layer formed on the surface of the substrate and printed electric circuit pattern, an opening formed in the isolation layer about each land pattern, a plurality of electrical devices arranged on the land patterns and a plurality of markers printed on the surface of the isolation layer enclosing corresponding electrical devices.
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