Patent ID: 6740819
Filing Date: 2004-05-25
Classification: H05K

Abstract:
A printed wiring board (PWB) comprising:an electrically conductive power plane having first and second plane surfaces and one or more filled via holes extending from said first plane surface to said second plane surface, said one or more filled via holes substantially filled with a photo-imageable dielectric (PID) material that has been cured with light energy; a first signal plane assembly having a first electrically conductive signal plane bonded to a first dielectric layer of a uniform first thickness, said first dielectric layer laminated to said first plane surface of said electrically conductive power plane; and a second signal plane assembly having a second electrically conductive signal plane bonded to a second dielectric layer of a uniform second thickness, said second dielectric layer laminated to said second plane surface of said electrically conductive power plane, wherein portions of said first dielectric layer further fill any unfilled surface areas of said filled via holes on said first plane surface and portions of said second dielectric layer further fill any unfilled surface areas of said filled via holes on said second plane surface.