Thin film transparent acoustic transducer

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element

Reexamination Certificate

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Details

C381S190000

Reexamination Certificate

active

07995777

ABSTRACT:
A thin film acoustic transducer is formed with an electrically actuatable substantially transparent thin film. Substantially transparent conductive thin films are supported on both sides of the electrically actuatable substantially transparent thin film. The thin film transducer may be used to sense sound, or produce sound in various embodiments. In further embodiments, the film may be attached to a window, and operate as a speaker for an audio system, or may provide noise cancellation functions. In further embodiments, the film may be attached to a computer monitor, touch panel, poster, or other surface, and operate as a speaker. A method of forming carbon nanotube thin films uses a layer by layer assembly technique and a positively charged hydrophilic layer on a thin film substrate.

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