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1. WO2021059581 - PIEZOELECTRIC VIBRATOR AND MANUFACTURING METHOD THEREFOR

Publication Number WO/2021/059581
Publication Date 01.04.2021
International Application No. PCT/JP2020/019308
International Filing Date 14.05.2020
IPC
H03H 3/02 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
3Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
007for the manufacture of electromechanical resonators or networks
02for the manufacture of piezo-electric or electrostrictive resonators or networks
H03H 9/19 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
15Constructional features of resonators consisting of piezo-electric or electrostrictive material
17having a single resonator
19consisting of quartz
CPC
H03H 3/02
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
3Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
007for the manufacture of electromechanical resonators or networks
02for the manufacture of piezo-electric or electrostrictive resonators or networks
H03H 9/19
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
15Constructional features of resonators consisting of piezo-electric or electrostrictive material
17having a single resonator
19consisting of quartz
Applicants
  • 株式会社村田製作所 MURATA MANUFACTURING CO., LTD. [JP]/[JP]
Inventors
  • 尾島 茂夫 OJIMA, Shigeo
  • 後 正紀 USHIRO, Masaki
Agents
  • 稲葉 良幸 INABA, Yoshiyuki
  • 大貫 敏史 ONUKI, Toshifumi
Priority Data
2019-17597726.09.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PIEZOELECTRIC VIBRATOR AND MANUFACTURING METHOD THEREFOR
(FR) VIBREUR PIÉZOÉLECTRIQUE ET SON PROCÉDÉ DE FABRICATION
(JA) 圧電振動子及びその製造方法
Abstract
(EN)
A piezoelectric vibrator (1) is provided with: a piezoelectric vibration element (10) that has a piezoelectric piece (11) and a pair of electrodes (14a, 14b) including electrodes facing each other with the piezoelectric piece (11) sandwiched therebetween; and a holder for housing the piezoelectric vibration element (10). A resin layer (L2) is provided over at least one electrode of the pair of electrodes (14a, 14b), and a water-repellent layer (L1) having a moisture permeability lower than that of the resin layer (L2) is provided between the electrode and the resin layer (L2).
(FR)
L'invention concerne un vibreur piézoélectrique (1) pourvu : d'un élément de vibration piézoélectrique (10) qui a une pièce piézoélectrique (11) et une paire d'électrodes (14a, 14b) comprenant des électrodes en regard l'une de l'autre avec la pièce piézoélectrique (11) prise en sandwich entre celles-ci ; et d'un support pour loger l'élément de vibration piézoélectrique (10). Une couche de résine (L2) est disposée sur au moins une électrode de la paire d'électrodes (14a, 14b), et une couche hydrofuge (L1) ayant une perméabilité à l'humidité inférieure à celle de la couche de résine (L2) est disposée entre l'électrode et la couche de résine (L2).
(JA)
圧電振動子(1)は、圧電片(11)と、圧電片(11)を挟んで互いに対向する各電極を含む一対の電極(14a,14b)と、を有する圧電振動素子(10)と、圧電振動素子(10)を収容する保持器とを備え、一対の電極(14a,14b)のうち少なくとも一方の電極の上方には樹脂層(L2)が設けられ、電極と樹脂層(L2)との間には、樹脂層(L2)よりも透湿性が低い撥水層(L1)が設けられている。
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