Multi-layer printed circuit board with human detectable layer mi

Details Multi-layer printed circuit board with human detectable layer mi Multi-layer printed circuit board with human detectable layer mi

1997-08-25

2000-07-18

Kincaid, Kristine

Electricity: conductors and insulators

Conduits, cables or conductors

Preformed panel circuit arrangement

174250, 174256, H05K 103

Patent

active

060910267

ABSTRACT:
A multi-layer printed circuit board for use in a computer mother board, a camera-incorporated multi-chip module (VTR MCM), a chip size package (CSP), a portable phone and the like, and a manufacturing method therefor, having a misregistration of layers that can be directly detected by human eyes. Also a wrong disposing of layers can be detected by human eyes accurately. A visually recognizable misregistration recognition strip and a visually recognizable wrongly disposed layer recognizing strip are provided on a router path of each of the circuited layers, for making it possible to detect the wrong disposition and the misregistration by human eyes.

REFERENCES:
patent: 3272909 (1966-09-01), Bruck et al.
patent: 5093183 (1992-03-01), Strunka
patent: 5266380 (1993-11-01), Renguso et al.
patent: 5429859 (1995-07-01), Young
English Abstract of JP 621616 of Jan. 1994.
English Abstract of JP 6179257 of Jun. 1994.
English Abstract of JP 653629 of Feb. 1994.

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