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. 31, 2004
Filed:
Nov. 30, 2000
Applicant:
Inventors:
Assignee:
Nokia Mobile Phones, Ltd., Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 2/500 ;
U.S. Cl.
CPC ...
H04R 2/500 ;
Abstract
A device (MS) having an electrical display (DSPL) is equipped with a transparent electrostatic diaphragm (ACT) vibrateably attached in front of the display. The display has been made electrically conductive and used as a stator of thus formed electrostatic speaker (TD ). A fluctuating DC-voltage is conducted to the diaphragm and display in order to resonate the diaphragm and produce sound respective to the fluctuation. The transparency of the diaphragm allows a user to see the display through the diaphragm. Alternatively, the similar arrangement can be used to implement a transparent electrostatic microphone on the display.