Metal working – Method of mechanical manufacture – Electrical device making
Patent
1994-07-29
1997-01-14
Vo, Peter
Metal working
Method of mechanical manufacture
Electrical device making
29 2535, 29827, 310327, 310334, H04R 3100, H04R 1700, H01L 4122
Patent
active
055927300
ABSTRACT:
A Z-axis backing layer for an acoustic transducer is provided, which comprises a matrix of electrical conductors disposed in parallel and potted within an electrically insulating acoustic backing material. The acoustic transducers are disposed on a first end of the backing layer, with each individual transducer element connecting electrically to a respective one of the conductors. At the other end of the backing layer, the conductors connect electrically to a corresponding circuit element. The backing layer is fabricated from a plurality of leadframes each having an outer frame member and a plurality of conductors extending in parallel across the leadframes terminating at the frame members at opposite ends thereof. The plurality of leadframes are stacked such that respective conductors of adjacent ones of the leadframes are disposed in parallel with a space provided between the respective conductors equivalent to a width of one of the leadframes. Acoustic backing material is poured onto the stacked plurality of leadframes to completely fill the spaces between conductors. The frame members and excess acoustic backing material are then removed from the stacked and poured plurality of leadframes.
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Greenstein Michael
Yoshida Henry
Hewlett--Packard Company
Vo Peter
LandOfFree
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