Surface-mounted LC device
AssigneeMurata Manufacturing Co., Ltd.
InventorsKenichi Ishizuka, Hirokazu Yazaki
Life of this patent
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Abstract
A surface-mounted LC device that includes a substrate having a first surface, multiple inductors formed on the first surface and formed respectively by multiple coiled conductor patterns, a first insulating layer covering the multiple coiled conductor patterns, and a capacitor that is formed on the first insulating layer by a planar electrode. Moreover, the planar electrode covers first zones in which portions of the coiled conductor patterns are adjacent to each other and current directions are opposite to each other in a plan view of the surface-mounted LC device.
Claims20
A surface-mounted LC device comprising:
- a substrate having a first surface;
- a plurality of inductors formed by respective coiled conductor patterns on the first surface of the substrate;
- a capacitor formed by a planar electrode;
- and
- a first insulating layer disposed between the capacitor and the coiled conductor patterns,
- wherein the planar electrode covers a plurality of first zones in which portions of pairs of the coiled conductor patterns are adjacent to each other and current directions are opposite to each other in a plan view of the substrate, and
- wherein the planar electrode covers a plurality of first zones in a plan view of the substrate, with each zone including portions of a respective pair of the coiled conductor patterns that are adjacent to each other and that have respective current directions that are opposite to each other in the plan view of the substrate, and
- wherein at least a portion of respective apertures of each of the coiled conductor patterns is not covered by the capacitor in the plan view of the substrate.
A surface-mounted LC device comprising:
- a substrate having a first surface;
- a plurality of inductors formed by respective coiled conductor patterns on the first surface of the substrate;
- a capacitor formed by a planar electrode;
- and
- a first insulating layer disposed between the capacitor and the coiled conductor patterns,
- wherein the planar electrode covers a plurality of first zones in which portions of pairs of the coiled conductor patterns are adjacent to each other and current directions are opposite to each other in a plan view of the substrate,
- wherein the capacitor does not cover at least portion of respective apertures of the coiled conductor patterns in the plan view of the substrate,
- wherein the planar electrode covers a plurality of second zones in which portions of pair of the coiled conductor patterns are adjacent to each other and the current directions are in a same direction in the plan view of the substrate, and
- wherein a proportion of a total area of the plurality of the first zones is greater than a proportion of a total area of the plurality of the second zones.
A surface-mounted LC device comprising:
- a substrate;
- a plurality of inductors disposed on the substrate;
- a first insulating layer disposed on the plurality of inductors;
- and
- a planar electrode disposed on the first insulating layer, such that the planar electrode covers a plurality of first zones of the first insulating layer in a plan view of the substrate,
- wherein each of the plurality of first zones is above portions of a respective pair of adjacent inductors of the plurality of inductors with the respective portions of each pair of adjacent inductors having current directions that are opposite to each other in the plan view of the substrate.
Dependencies are inferred from the claim text.