发明授权
US06242078B1 High density printed circuit substrate and method of fabrication 失效
高密度印刷电路基板及其制造方法

High density printed circuit substrate and method of fabrication
摘要:
The present invention is a method and apparatus for providing an electrical substrate. The electrical substrate comprises a dielectric layer having a surface roughness of no greater than 6.0 microns. A first conductive layer is attached to the dielectric layer. In one embodiment, the dielectric layer comprises a laminate that comprises a cloth having a uniform weave and a resin that is consistently impregnated within the uniform weave. A removable layer may be attached to the laminate and removed prior to metallizing of the first conductive layer. Various embodiments are described.
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