The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2011
Filed:
Oct. 03, 2006
Xun Yu, St. Paul, MN (US);
Rajesh Rajamani, Saint Paul, MN (US);
Kim A. Stelson, Edina, MN (US);
Tianhong Cui, Vadnais Heights, MN (US);
Xun Yu, St. Paul, MN (US);
Rajesh Rajamani, Saint Paul, MN (US);
Kim A. Stelson, Edina, MN (US);
Tianhong Cui, Vadnais Heights, MN (US);
Other;
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.