Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Microphone capsule only
Reexamination Certificate
2007-12-04
2007-12-04
Le, Huyen (Department: 2615)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Microphone capsule only
C381S175000, C381S191000
Reexamination Certificate
active
11033503
ABSTRACT:
A dynamic pressure sensing structure used in a condenser microphone includes an upper electrode plate, a lower electrode plate, a spacer and a substrate, wherein the upper and lower electrode plates are separated by the spacer and form a resonance cavity with the substrate. The upper electrode plate comprises a flat vibration area and a surrounding flexible area connected thereto. The lower electrode plate comprises a sensible electrode and an actuation electrode surrounding the sensible electrode. The plate is in connection with the flexible area so that a capacitor is formed between the sense area and the flat vibration area. The actuation electrode provides a polarization voltage to generate an electrostatic force, thereby attract the flexible vibration area to curve downwards so that the flat vibration area moves in a flat state and a distance between the flat vibration area and the sensible electrode is varied correspondingly.
REFERENCES:
patent: 5208789 (1993-05-01), Ling
patent: 5452268 (1995-09-01), Bernstein
patent: 5740261 (1998-04-01), Loeppert et al.
patent: 5870482 (1999-02-01), Loeppert et al.
patent: 6088463 (2000-07-01), Rombach et al.
patent: 7146016 (2006-12-01), Pedersen
Chiou Yii-Tay
Chou Yu-Kon
Kuo Tsung-ter
Su Mao-Shun
Industrial Technology Research Institute
Le Huyen
Rabin & Berdo P.C.
LandOfFree
Dynamic pressure sensing structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dynamic pressure sensing structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic pressure sensing structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3893052