Sound producing device
AssigneexMEMS Labs, Inc.
InventorsChiung C. Lo, Wen-Chien Chen, Chun-I Chang, Jemm Yue Liang
Life of this patent
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Abstract
A sound producing device includes a base and at least one chip disposed on the base. The chip includes at least one membrane and at least one actuator. The membrane includes a coupling plate and at least one spring structure connected to the coupling plate. The actuator is configured to receive a driving signal corresponding to an input audio signal to actuate the membrane, and the input audio signal and the driving signal have an input audio band which has an upper bound at a maximum frequency. The spring structure is situated between the coupling plate and the actuator. The membrane has a first resonance frequency higher than the maximum frequency.
Claims30
A sound producing device, comprising:
- a base;
- and
- at least one chip disposed on the base, the at least one chip comprising:
- at least one membrane comprising a coupling plate and at least one spring structure connected to the coupling plate;
- and
- at least one actuator configured to receive a driving signal corresponding to an input audio signal to actuate the at least one membrane, wherein the input audio signal and the driving signal have an input audio band which has an upper bound at a maximum frequency;
- wherein the at least one spring structure is situated between the coupling plate and the at least one actuator, and the at least one membrane has a first resonance frequency higher than the maximum frequency;
- wherein the coupling plate is actuated to move by the at least one actuator via the at least one spring structure.
Dependencies are inferred from the claim text.