Surface acoustic wave device mounted module
First Claim
1. A surface acoustic wave device mounted module, comprising:
- a multilayer substrate comprising at least one layer of shield electrode pattern, input-output electrodes, grounding electrodes and through holes used for connecting electrodes; and
a surface acoustic wave element placing a inter-digital transducer to face said multilayer substrate, said surface acoustic wave element having metallic bumps, which are transfer-coated with a conductive resin, on electrode pads and an insulating resin partially or entirely disposed around said surface acoustic wave element;
wherein said electrode pads are input-output terminals and grounding terminals formed on said surface acoustic wave element;
wherein continuities between said input-output terminals and said input-output electrodes, and between said grounding terminals and said grounding electrodes are established by said through holes;
wherein a continuous grounding electrode pattern is formed on a surface of said multilayer substrate surrounding said surface acoustic wave element;
wherein a metallic lid is attached to said continuous grounding electrode pattern by a solder or a conductive resin so that said surface acoustic wave element is sealed in an airtight condition by said metallic lid; and
wherein said continuous grounding electrode pattern is connected to said grounding electrodes by said through holes.
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Accused Products
Abstract
This invention provides a surface acoustic wave device mounted module which is miniature, light, and highly reliable. The surface acoustic wave device mounted module also has excellent frequency characteristics. The surface acoustic wave device mounted module includes a multilayer substrate which has at least one layer of a shield pattern, input-output electrodes, grounding electrodes, through holes used for connecting electrodes, and a surface acoustic wave element. The surface acoustic wave element has metallic bumps, which are transfer-coated with a conductive resin, on electrode pads and an insulating resin around the surface acoustic wave element. The electrode pads are input-output terminals and grounding terminals formed on the surface acoustic wave element. Continuities between the input-output terminals and the input-output electrodes, and between the grounding terminals and the grounding electrodes are established by the through holes. An electrode pattern is formed on the surface of the multilayer substrate facing and surrounding the surface acoustic wave element. A metallic lid is attached to the electrode pattern by a solder or a conductive resin so that the surface acoustic wave element is sealed in an airtight condition. The electrode pattern is connected to the grounding electrodes by the through holes.
331 Citations
13 Claims
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1. A surface acoustic wave device mounted module, comprising:
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a multilayer substrate comprising at least one layer of shield electrode pattern, input-output electrodes, grounding electrodes and through holes used for connecting electrodes; and a surface acoustic wave element placing a inter-digital transducer to face said multilayer substrate, said surface acoustic wave element having metallic bumps, which are transfer-coated with a conductive resin, on electrode pads and an insulating resin partially or entirely disposed around said surface acoustic wave element; wherein said electrode pads are input-output terminals and grounding terminals formed on said surface acoustic wave element; wherein continuities between said input-output terminals and said input-output electrodes, and between said grounding terminals and said grounding electrodes are established by said through holes; wherein a continuous grounding electrode pattern is formed on a surface of said multilayer substrate surrounding said surface acoustic wave element; wherein a metallic lid is attached to said continuous grounding electrode pattern by a solder or a conductive resin so that said surface acoustic wave element is sealed in an airtight condition by said metallic lid; and wherein said continuous grounding electrode pattern is connected to said grounding electrodes by said through holes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A surface acoustic wave device mounted module, comprising:
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a multilayer substrate comprising at least one layer of shield electrode pattern, input-output electrodes, grounding electrodes and through holes used for connecting electrodes; a surface acoustic wave element placing an inter-digital transducer facing said multilayer substrate, said surface acoustic wave element having metallic bumps, which are transfer-coated with a conductive resin, on electrode pads and an insulating resin partially or entirely disposed around said surface acoustic wave element; and active components or passive components; wherein said electrode pads are input-output terminals and grounding terminals formed on said surface acoustic wave element; wherein said surface acoustic wave element and said active components or passive components are integrated into one body on said multilayer substrate; wherein a continuous grounding electrode pattern is formed on said multilayer substrate surrounding said surface acoustic wave element; wherein a metallic lid is attached to said continuous grounding electrode pattern by a solder or a conductive resin to seal said surface acoustic wave element in an airtight condition by said metallic lid; and wherein said continuous grounding electrode pattern is connected to said grounding electrodes by said through holes. - View Dependent Claims (11, 12, 13)
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Specification