Acoustic resonator

An acoustic resonator includes: a resonating unit including a piezoelectric layer, a first electrode disposed on a lower side of the piezoelectric layer, and a second electrode disposed on an upper side of the piezoelectric layer; a substrate disposed below the resonating unit; a support unit formin...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Kim, Tae Yoon, Jeong, Dae Hun, Kim, Jong Woon, Lee, Moon Chul
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An acoustic resonator includes: a resonating unit including a piezoelectric layer, a first electrode disposed on a lower side of the piezoelectric layer, and a second electrode disposed on an upper side of the piezoelectric layer; a substrate disposed below the resonating unit; a support unit forming a cavity between the substrate and the resonating unit; and a pillar extending through the cavity and connecting the resonating unit to the substrate. The resonating unit further includes a first insertion layer disposed above the pillar.