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Subtractive Etch Promoting Dummy Lines Disclosure Number: IPCOM000035985D
Original Publication Date: 1989-Aug-01
Included in the Prior Art Database: 2005-Jan-28

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Fink, P Gruber, H Hinrichsmeyer, K Pohl, G Scheithauer, A Stadler, E [+details]


Segments of dummy signal lines are added to a signal plane in areas of low wiring density to obtain a uniform subtractive etch rate across the entire printed circuit with low and high density copper areas.