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US 2018/0324519 A1Published application
Sound output apparatus
AssigneeModa-Innochips Co., Ltd.
InventorsSung Chol PARK, Young Sul KIM, Sang Hun PARK, In Seob JEONG
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Abstract
The present disclosure provides a sound output apparatus including a first sound output unit, a second sound output unit spaced a predetermined distance from the first sound output unit, at least one opening defined in the second sound output unit, and a housing for accommodating at least one of the first and second sound output units. Here, the housing has an external diameter that is 100% to 130% of a diameter of the second sound output unit.
Claims22
A sound output apparatus comprising:
- a first sound output unit;
- a second sound output unit spaced a predetermined distance from the first sound output unit;
- and
- a housing configured to accommodate at least one of the first and second sound output units,
- wherein at least one of the first and second sound output units comprises a piezoelectric element in which a plurality of piezoelectric layers are laminated, and the piezoelectric element is formed in at least one of manners that the piezoelectric layer has a thickness that is ⅓ to 1/100 of that of the piezoelectric element, and the laminated number of the piezoelectric layers is 2 to 50.
2 more elements
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Dependencies are inferred from the claim text.