COMPOUND MEMBRANE AND ACOUSTIC DEVICE USING SAME

• US 20110272208A1
• Filed: 12/26/2010
• Published: 11/10/2011
• Est. Priority Date: 05/04/2010
• Status: Active Grant

• Current Assignee: AAC Technologies Pte Limited (AAC Technologies Holdings Inc.), American Audio Components, Inc.
• Original Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd. (AAC Technologies Holdings Inc.), AAC Technologies Pte Limited (AAC Technologies Holdings Inc.)
• Inventors: SHEN, Tao
• Granted Patent: US 8,141,676 B2
• Time in Patent Office: Days
• US Class Current: 181/170
• CPC Class Codes: H04R 7/10 comprising superposed layers in contact
• CPC Class Codes: Y10T 428/31533 Of polythioether
• CPC Class Codes: Y10T 428/31721 Of polyimide
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31797 Next to addition polymer from unsaturated monomers

Abstract

The present invention provides a compound membrane and an acoustic device including such a compound membrane. The compound membrane includes a central layer, a first glue layer attached to one side of the central layer, a second glue layer attached to another side of the central layer, an upper layer provided on the first glue layer, and a lower layer provided beneath the second glue layer. The anti-fatigue performance of the compound membrane is desirable.

Claims

1. A compound membrane comprising:

a central layer;

a first glue layer attached to one side of the central layer;

a second glue layer attached to another side of the central layer;

an upper layer provided on the first glue layer; and

a lower layer provided beneath the second glue layer.

2. The compound membrane as described in claim 1, wherein the center layer comprises material of Polyethyleneterepthalate.

3. The compound membrane as described in claim 2, wherein the material of the upper layer and/or the lower layer is selected from Polyetherimide, Polyethylene Naphthalate, Polyetheretherketone, and Polyphnylens sulfide.

4. The compound membrane as described in claim 2, wherein the glue layers comprises material of acrylic.

5. An acoustic device comprising:

a compound membrane as described in one of claims 1 to 4.