Patent ID: 7262676
Filing Date: 2007-08-28
Classification: H01L,H03H

Abstract:
1. An electroacoustic component, comprising: a first substrate; a layer system disposed at said first substrate to define a first interface therebetween, said layer system having: a second substrate; said piezo-electric layer being disposed between said first substrate and said first metal layer; said first metal layer being disposed between said piezo-electric layer and said dielectric planarizing layer; and said dielectric planarizing layer being disposed between said first metal layer and said second substrate; said layer system and said second substrate defining a second interface therebetween; said piezo-electric layer and said first and second substrates being formed to have a smaller propagation velocity of said guided bulk acoustic wave in said piezo-electric layer than a propagation velocity of said guided bulk acoustic wave in said first and second substrates; and said layer system and said first and second interfaces being devoid of cavities; said first substrate has a first side; said second substrate has a second side; external contacts are disposed on at least one of said first side and said second side; through-contacts electrically conductively connect said contact surfaces with said external contacts through at least one of said first and second substrates; at least two of said through-contacts in a respective one of said first and second substrates: said V-shaped through-contacts are trench-shaped and extend along a length thereof.