Back to results
US 2009/0154730 A1Published application
Electrostatic Speaker Arrangement for a Mobile Device
AssigneeSony Ericsson Mobile Communications AB
InventorRandolph Cary Demuynck
Life of this patent
Estimating the term…
Abstract
A speaker is integrally formed with a multi-layered printed circuit board. The printed circuit board includes a flexible membrane layer with a conductive pattern thereon. Positive and negative elements are disposed on opposing sides of the flexible membrane. A drive circuit connects to the flexible membrane layer and applies current to the flexible membrane layer responsive to an audio signal to generate audible sounds.
Claims16
A speaker for a mobile device comprising:
- a multi-layered printed circuit board including at least one flexible membrane layer having a conductive pattern formed therein;
- a positive element disposed on a first side of said flexible membrane layer and a negative element disposed on a second side of said flexible membrane layer;
- and
- a drive circuit electrically connected to said flexible membrane layer to apply current to said flexible membrane layer responsive to an input audio signal to produce audible sounds.
1 more element
A method of making a speaker comprising:
- forming a multi-layered printed circuit board including a flexible membrane layer with a conductive pattern;
- disposing positive and negative elements on opposing sides of said flexible membrane layer;
- and
- connecting a drive circuit to said flexible membrane layer, wherein said drive circuit is operative to drive said flexible membrane layer responsive to an input audio signal to produce audible sounds.
1 more element
Dependencies are inferred from the claim text.