Diaphragm and miniature speaker comprising same
AssigneeGoertek Inc.
InventorsZhenzhen Cheng, Jianhua Gu, Zengxun Wu
Life of this patent
Estimating the term…
Abstract
The present invention discloses a diaphragm and a miniature speaker comprising the diaphragm. The diaphragm has a multi-layer composite structure comprising alternately stacked thermoplastic elastomer layers and adhesive film layer(s). The diaphragm and the miniature speaker comprising the same solve the technical problems such as an unstable F0 and high total harmonic distortion of the miniature speaker in the prior art. The diaphragm and the miniature speaker according to the invention have low total harmonic distortion, low damping coefficient, higher F0 stability and high sound quality, satisfying requirements for high sound quality of an electronic device.
Claims17
A diaphragm, wherein the diaphragm has a multi-layer composite structure comprising thermoplastic elastomer layers and one or more adhesive film layer which are alternately laminated,
- wherein in the multi-layer composite structure, two outermost layers are thermoplastic elastomer layers, and every layer of the one or more adhesive film layer is sandwiched between two adjacent thermoplastic elastomer layers, and
- wherein each of the thermoplastic elastomer layers is one or more of thermoplastic polyester (TPEE) film, thermoplastic polyurethane (TPU) film and thermoplastic polyamide elastomer (TPAE) film,
- wherein the diaphragm is for a miniature speaker.
A diaphragm, wherein the diaphragm has a multi-layer composite structure comprising thermoplastic elastomer layers and one or more adhesive film layer which are alternately laminated, wherein the multi-layer composite structure is composed of three layers consisting of two thermoplastic elastomer layers and one adhesive film layer located between the two thermoplastic elastomer layers, or
- the multi-layer composite structure is composed of five layers consisting of three thermoplastic elastomer layers and two adhesive film layers located between two adjacent thermoplastic elastomer layers of the three thermoplastic elastomer layers respectively, or
- the multi-layer composite structure is composed of seven layers consisting of four thermoplastic elastomer layers and three adhesive film layers located between two adjacent thermoplastic elastomer layers of the four thermoplastic elastomer layers respectively,
- wherein in the multi-layer composite structure, two outermost layers are thermoplastic elastomer layers, and every layer of the one or more adhesive film layer is sandwiched between two adjacent thermoplastic elastomer layers, and
- wherein each of the thermoplastic elastomer layers is one or more of thermoplastic polyester (TPEE) film, thermoplastic polyurethane (TPU) film and thermoplastic polyamide elastomer (TPAE) film,
- wherein the diaphragm is for a miniature speaker.
Dependencies are inferred from the claim text.