Methods of making speakers
US8196282B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2009 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Nov 23, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of making a speaker may be performed partially or completely in a roll-based processing. The method includes: providing an electrode; providing a membrane, which is treated to form an electret membrane by performing a ferroelectric process with a controlled external condition including at least one of humidity and temperature conditions; forming a conductive layer on the membrane; forming first supporting members on one of the electrode and the membrane; providing a substrate; forming second supporting members on one of the substrate and the membrane; and combining the electrode, the membrane, and the substrate to provide a first chamber and a second chamber, and the first supporting members are disposed between the electrode and the membrane in the first chamber and the second supporting members are disposed between the substrate and the membrane in the second chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.