ELASTIC WAVE DEVICE
First Claim
1. An elastic wave device comprising:
- a piezoelectric substrate;
a functional element unit that is provided on one principal surface of the piezoelectric substrate;
an electrode unit that is electrically connected to the functional element unit and extends to an end side of the piezoelectric substrate;
a support layer that is provided on the one principal surface of the piezoelectric substrate and encloses the functional element unit; and
a cover that is supported by the support layer and covers the functional element unit;
whereinthe support layer is separate from the end side of the piezoelectric substrate and encloses the functional element unit; and
the device further comprises a retaining member made of resin that is separate from the support layer on the piezoelectric substrate and extends to the end side of the piezoelectric substrate.
1 Assignment
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Accused Products
Abstract
Functional element units and a connection line electrically connecting the functional element units are formed on one principal surface of a piezoelectric motherboard. A resin support layer enclosing the functional element units is formed on the one principal surface of the motherboard. An elastic wave device with the functional units is obtained by dividing a multilayer body including the motherboard, the functional element units, and the support layer into a plurality of sections along a dicing line. The connection line includes a line main body positioned on the dicing line, and a connection unit in which the line main body and the functional element units are electrically connected. Prior to dividing the multilayer body, a retaining member made of resin which straddles the line main body in the width direction of the line main body is formed separate from the support layer on the motherboard.
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Citations
8 Claims
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1. An elastic wave device comprising:
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a piezoelectric substrate; a functional element unit that is provided on one principal surface of the piezoelectric substrate; an electrode unit that is electrically connected to the functional element unit and extends to an end side of the piezoelectric substrate; a support layer that is provided on the one principal surface of the piezoelectric substrate and encloses the functional element unit; and a cover that is supported by the support layer and covers the functional element unit;
whereinthe support layer is separate from the end side of the piezoelectric substrate and encloses the functional element unit; and the device further comprises a retaining member made of resin that is separate from the support layer on the piezoelectric substrate and extends to the end side of the piezoelectric substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification