Invention Application
US20150017320A1 METHOD OF MANUFACTURING STACKED THIN FILM PIEZOELECTRIC FILTER 有权
堆叠薄膜压电过滤器的制造方法

  • Patent Title: METHOD OF MANUFACTURING STACKED THIN FILM PIEZOELECTRIC FILTER
  • Patent Title (中): 堆叠薄膜压电过滤器的制造方法
  • Application No.: US14492210
    Application Date: 2014-09-22
  • Publication No.: US20150017320A1
    Publication Date: 2015-01-15
  • Inventor: Takashi MIYAKE
  • Applicant: Murata Manufacturing Co., Ltd.
  • Priority: JP2009-278576 20091208; JP2010-236297 20101021
  • Main IPC: H04R31/00
  • IPC: H04R31/00
METHOD OF MANUFACTURING STACKED THIN FILM PIEZOELECTRIC FILTER
Abstract:
A method of manufacturing a stacked thin film piezoelectric filter includes the steps of forming a lower thin film piezoelectric resonator on a substrate, measuring a frequency of the lower thin film piezoelectric resonator and adjusting the frequency, forming an acoustic coupling layer on the lower thin film piezoelectric resonator whose frequency has been adjusted, forming the stacked thin film piezoelectric filter by forming an upper thin film piezoelectric resonator on the acoustic coupling layer, and measuring a frequency of the upper thin film piezoelectric resonator and adjusting the frequency.
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