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US 6,714,100 B2Granted
Monolithic electronic device
AssigneeMurata Manufacturing Co., Ltd.
InventorsSadayuki Matsumura, Noboru Kato, Yutaka Masuda
Life of this patent
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Abstract
In a monolithic LC filter, bent portions of external electrodes are formed by applying and firing a conductive paste in the areas of first to eighth bent segments that are formed by pattern printing, photolithography, or a thin-film forming method. The third, fourth, seventh, and eighth bent segments, which are used to form ground external electrodes, cover openings disposed between extensions of shield electrodes in the composite of the monolithic LC filter.
Claims20
A monolithic electronic device comprising:
- a composite including a plurality of insulation layers stacked on each other, at least one internal circuit element, and at least one shield electrode having a plurality of extensions;
- an input external electrode and an output external electrode disposed on a surface of the composite;
- and
- ground external electrodes disposed on the composite and electrically connected to the plurality of extensions;
- wherein each of the input external electrode and the output external electrode has a main electrode portion that includes a conductive paste disposed on an end surface of the composite, the ground external electrodes include a side surface segment that includes a conductive paste disposed on the entirety of a side surface of the composite, and each of the ground external electrodes has a bent segment disposed on at least one of a top surface and a bottom surface of the composite, and the bent segments cover openings between the plurality of extensions of the shield electrode in plan view.
2 more elements
A method of manufacturing a monolithic electronic device comprising the steps of:
- laminating a plurality of insulation layers, at least one internal circuit element, and at least one shield electrode having a plurality of extensions, upon each other to form a composite;
- forming an input external electrode and an output external electrode on a surface of the composite;
- and
- forming ground external electrodes on the composite so as to be electrically connected to the plurality of extensions;
- wherein each of the input external electrode and the output external electrode has a main electrode portion that is formed by applying a conductive paste onto an end surface of the composite, the ground external electrodes include a side surface segment that is formed by applying a conductive paste onto the entirety of a side surface of the composite, and each of the ground external electrodes has a bent segment that is formed by one of pattern printing, thin-film forming, and photolithography on at least one of a top surface and a bottom surface of the composite, and the bent segments cover openings between the plurality of extensions of the shield electrode in plan view.
2 more elements
Dependencies are inferred from the claim text.