US 12,256,206 B2
Diaphragm for sound producing device, sound producing device, and method for assembling the same
Fengguang Ling, Shandong (CN); Shuqiang Wang, Shandong (CN); Chun Li, Shandong (CN); and Chunfa Liu, Shandong (CN)
Assigned to GOERTEK INC., Shandong (CN)
Appl. No. 17/631,015
Filed by GOERTEK INC., Shandong (CN)
PCT Filed Dec. 14, 2018, PCT No. PCT/CN2018/121123
§ 371(c)(1), (2) Date Aug. 5, 2022,
PCT Pub. No. WO2020/037899, PCT Pub. Date Feb. 27, 2020.
Claims priority of application No. 201810948780.0 (CN), filed on Aug. 20, 2018.
Prior Publication US 2023/0262394 A1, Aug. 17, 2023
Int. Cl. H04R 7/04 (2006.01); C08K 5/00 (2006.01); C08L 23/08 (2006.01); C08L 23/0869 (2025.01); H04R 31/00 (2006.01)
CPC H04R 7/04 (2013.01) [C08K 5/0025 (2013.01); C08L 23/0869 (2013.01); H04R 31/003 (2013.01); C08L 2203/20 (2013.01); C08L 2312/00 (2013.01); H04R 2207/021 (2013.01); H04R 2231/001 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A diaphragm for a sound producing device comprising a film layer prepared by a crosslinking reaction of at least one of an ethylene-acrylate copolymer and an ethylene-acrylate-carboxylic acid copolymer and wherein the ethylene-acrylate-carboxylic acid copolymer is represented by the following chemical formula:

OG Complex Work Unit Chemistry
wherein x, y and z are natural numbers; R and R′ are alkyl groups.