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US 12,120,483 B2Granted
Audio device
AssigneeTDK Corporation
InventorsYoshiki Ohta, Takuto Horii, Yoshikazu Shimura, Atsushi Ezawa, Miho Bamba, Kaoru Kijima, Akihiro Takeda
Life of this patent
Estimating the term…
Abstract
An audio device includes a vibration member, and a first piezoelectric vibrator and a second piezoelectric vibrator that are provided on the vibration member. A natural frequency of the first piezoelectric vibrator is larger than a natural frequency of the second piezoelectric vibrator.
Claims19
An audio device comprising:
- a vibration member;
- and
- a first piezoelectric vibrator and a second piezoelectric vibrator on the vibration member, wherein
- a natural frequency of the first piezoelectric vibrator is larger than a natural frequency of the second piezoelectric vibrator,
- the first piezoelectric vibrator is one of a pair of first piezoelectric vibrators,
- the pair of first piezoelectric vibrators is on both sides of a straight line which passes through a gravity center of a main face of the vibration member when viewed from a direction orthogonal to the main face of the vibration member,
- a distance between the first piezoelectric vibrator and the gravity center is shorter than a distance between the second piezoelectric vibrator and the gravity center,
- the pair of first piezoelectric vibrators is spaced apart from the gravity center, and
- the second piezoelectric vibrator is spaced apart from the gravity center.
6 more elements
An audio device comprising:
- a vibration member;
- and
- a first piezoelectric vibrator and a second piezoelectric vibrator on the vibration member, wherein
- a natural frequency of the first piezoelectric vibrator is larger than a natural frequency of the second piezoelectric vibrator,
- the first piezoelectric vibrator and second piezoelectric vibrator are
- on a main face of the vibration member,
- on the same side of a line passing through a gravity center of the main face, and
- spaced apart from each other.
5 more elements
Dependencies are inferred from the claim text.