Method for manufacturing compound diaphragm

• US 9,424,829 B2
• Filed: 10/24/2014
• Issued: 08/23/2016
• Est. Priority Date: 04/25/2014
• Status: Active Grant

• Current Assignee: AAC Technologies Pte Limited (AAC Technologies Holdings Inc.)
• Original Assignee: AAC Technologies Pte Limited (AAC Technologies Holdings Inc.)
• Inventors: Zhu, Bingke
• Primary Examiner(s): Phillips, Forrest M
• Application Number:
  US14/522,688
• Publication Number:
  US 20150310848A1
• Time in Patent Office: 669 Days
• Field of Search: 181/167, 181/168, 181/169, 181/170
• US Class Current: 1/1
• CPC Class Codes: B32B 2255/10 on synthetic resin layer or on natural or synthetic rubber layer
• CPC Class Codes: B32B 2255/20 Inorganic coating
• CPC Class Codes: B32B 2255/26 Polymeric coating
• CPC Class Codes: B32B 2307/10 having particular acoustical properties
• CPC Class Codes: B32B 2307/51 Elastic
• CPC Class Codes: B32B 2307/584 Scratch resistance
• CPC Class Codes: B32B 2371/00 Polyethers, e.g. PEEK, i.e. polyether-etherketone; PEK, i.e. polyetherketone
• CPC Class Codes: B32B 2457/00 Electrical equipment
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/285 comprising polyethers
• CPC Class Codes: B32B 27/286 comprising polysulphones; polysulfides
• CPC Class Codes: B32B 27/288 comprising polyketones
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: B32B 37/12 characterised by using adhesives
• CPC Class Codes: B32B 37/182 one or more of the layers being plastic
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: G10K 13/00 Cones, diaphragms, or the like, for emitting or receiving sound in general for electromechanical transducers H04R7/00
• CPC Class Codes: H04R 2307/023 Diaphragms comprising ceramic-like materials, e.g. pure ceramic, glass, boride, nitride, carbide, mica and carbon materials
• CPC Class Codes: H04R 2499/11 Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
• CPC Class Codes: H04R 31/003 for diaphragms or their outer suspension
• CPC Class Codes: H04R 7/10 : comprising superposed layers in contact

Abstract

The present disclosure provides diaphragm and a method for manufacturing the same. The diaphragm includes a first macromolecular material layer, a graphene layer, a glue layer and a second macromolecular material layer in sequence. The first macromolecular material layer is directly attached to the graphene layer, and the second macromolecular material layer is attached to the graphene layer via the glue layer. The strength and the stiffness of the diaphragm is enhanced to improve the acoustic performances of the diaphragm.

Claims

1. A diaphragm, comprising:

a first macromolecular material layer;

a graphene layer;

a glue layer;

a second macromolecular material layer;

wherein the first macromolecular material layer is closely directly attached to the graphene layer though one of evaporation process, physical vapor deposition (PVD) process, chemical vapor deposition (CVD) process, sputtering process, spray coating process, and printing process, and the second macromolecular material layer is attached to the graphene layer via the glue layer.

2. The diaphragm of claim 1, wherein the first macromolecular material layer and the second macromolecular material layer are formed of any one or two of polyetheretherketone (PEEK), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS) and polyarylate (PAR) respectively.

3. A method for manufacturing a diaphragm in one of claims 1-2, comprising the following steps:

Step 1;

providing a first macromolecular material layer;

Step 2;

providing a graphene layer;

Step 3;

attaching the first macromolecular material layer to one surface of the graphene layer though one of evaporation process, physical vapor deposition (PVD) process, chemical vapor deposition (CVD) process, sputtering process, spray coating process, and printing process;

Step 4;

providing a second macromolecular material layer and coating glue on a surface thereof for forming a second macromolecular material layer having a glue layer thereon; and

Step 5;

attaching the second macromolecular material layer to the other surface of the graphene layer for forming diaphragm.

4. The method for manufacturing a diaphragm of claim 3, wherein the first macromolecular material layer and the second macromolecular material layer are formed of any one of polyetheretherketone (PEEK), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS) and polyarylate (PAR) respectively.