Title:
ELECTROACOUSTIC TRANSDUCER
Document Type and Number:
WIPO Patent Application WO/2020/179353
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an electroacoustic transducer comprising a diaphragm and an exciter and having good flexibility. This problem is solved by providing a configuration having a diaphragm and an exciter, wherein the maximum value of the loss tangent of the exciter at a frequency of 1Hz in accordance with dynamic viscoelasticity measurement of the exciter in a temperature range of 0 to 50°C is 0.08 or more, and the product of the thickness of the exciter and the storage modulus of the exciter at 25°C and at a frequency 1Hz in accordance with dynamic viscoelastic measurement is less than or equal to three times the product of the thickness of the diaphragm and the Young's modulus of the diaphragm.
Inventors:
MIYOSHI TETSU (JP)
Application Number:
PCT/JP2020/004849
Publication Date:
September 10, 2020
Filing Date:
February 07, 2020
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
H04R17/00; H01L41/083; H01L41/18
Domestic Patent References:
| WO2016002677A1 | 2016-01-07 |
Foreign References:
| JP2006229506A | 2006-08-31 | |||
| JP4960765B2 | 2012-06-27 | |||
| JP2014209724A | 2014-11-06 | |||
| JP2016015354A | 2016-01-28 |
Other References:
See also references of EP 3937511A4
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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