Title:
DIAPHRAGM AND SOUND-PRODUCING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/000776
Kind Code:
A1
Abstract:
The present utility model discloses a diaphragm, comprising a first soft adhesive layer, and a first hard film layer and a second hard film layer which are respectively attached to two opposite sides of the first soft adhesive layer; the thickness of the first hard film layer is different from the thickness of the second hard film layer, and the hardness of the first hard film layer and the hardness of the second hard film layer are greater than the hardness of the first soft adhesive layer. Compared with the related art, the diaphragm and the sound-producing device of the present utility model have good acoustic performance and reliability.
Inventors:
ZHANG CHAO (CN)
ZENG YUE (CN)
ZENG YUE (CN)
Application Number:
PCT/CN2020/114314
Publication Date:
January 06, 2022
Filing Date:
September 10, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECHNOLOGIES PTE LTD (SG)
AAC TECHNOLOGIES PTE LTD (SG)
International Classes:
H04R7/02
Domestic Patent References:
| WO2015180289A1 | 2015-12-03 |
Foreign References:
| CN110958544A | 2020-04-03 | |||
| CN110446143A | 2019-11-12 | |||
| CN109068246A | 2018-12-21 | |||
| CN205610915U | 2016-09-28 |
Attorney, Agent or Firm:
SHENZHEN JUNXINCHENG INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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