Processing low dielectric constant materials for high speed elec

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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156327, 29829, 29846, 437925, B32B 3112, B32B 3114

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057857873

ABSTRACT:
A method for fabricating a low dielectric constant printed circuit board includes dispersing an additive material in a low dielectric constant porous polymer layer; providing holes through the low dielectric constant porous polymer layer; applying a metallization layer over surfaces of the low dielectric constant porous polymer layer and surfaces of the holes; patterning the metallization layer; and removing the additive material from the low dielectric constant porous polymer layer. The removal of the additive material can be accomplished by sublimation, evaporation, and diffusion.

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