Invention Grant
US07804971B2 Electrostatic ultrasonic transducer, ultrasonic speaker and display device
有权
静电超声波换能器，超声波扬声器和显示装置
- Patent Title: Electrostatic ultrasonic transducer, ultrasonic speaker and display device
- Patent Title (中): 静电超声波换能器，超声波扬声器和显示装置
-
Application No.: US11535101Application Date: 2006-09-26
-
Publication No.: US07804971B2Publication Date: 2010-09-28
- Inventor: Kinya Matsuzawa
- Applicant: Kinya Matsuzawa
- Applicant Address: JP
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2006-190587 20050711; JP2005-279251 20050927
- Main IPC: H04R25/00
- IPC: H04R25/00 ; H04R3/00 ; H02N1/00 ; H01B19/00
Abstract:
The present invention relates to a push-pull type electrostatic ultrasonic transducer, particularly, an electrostatic ultrasonic transducer capable of generating usual sound pressure with lower energy, and thereby, reducing voltage (lowering power); wherein the spacing between the electrodes and vibrating film is set to a specific distance.
Public/Granted literature
- US20070071261A1 ELECTROSTATIC ULTRASONIC TRANSDUCER, ULTRASONIC SPEAKER AND DISPLAY DEVICE Public/Granted day:2007-03-29
Information query
