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US 6,646,608 B2Granted
Center electrode assembly, nonreciprocal circuit device, communication device, and method of producing the center electrode assembly
AssigneeMurata Manufacturing Co., Ltd.
InventorMasayuki Yoneda
Life of this patent
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Abstract
A center electrode assembly includes a substrate made of ferrite, insulation layers made from insulation paste, and a plurality of center electrodes which intersect the insulation layers at predetermined angles. The center electrodes are formed by coating a photosensitive electroconductive paste material, exposing, and firing.
Claims21
A center electrode assembly comprising:
- a substrate;
- a plurality of center electrodes arranged on the substrate so as to overlap each other at a predetermined intersecting angle relative to each other;
- and
- insulation layers arranged between the center electrodes to insulate the center electrodes from each other;
- wherein
- at least the center electrodes are made from a photosensitive electroconductive paste material.
3 more elements
A method of producing a center electrode assembly comprising the steps:
- coating a photosensitive electroconductive paste material onto substantially an entire main surface of a substrate, exposing and developing the photosensitive electroconductive paste to form a center electrode having a predetermined pattern;
- and
- coating a photosensitive insulation paste material onto substantially the entire main surface of the substrate, exposing and developing photosensitive insulation paste material to form an insulation layer having a predetermined pattern;
- wherein
- the step of forming the center electrode and the step of the forming the insulation layer is repeated a predetermined number times, so that the plurality of center electrodes are arranged on the main surface of the substrate so as to form predetermined intersecting angles relative to each other with the insulation layers being interposed between the center electrodes.
2 more elements
A method of producing a center electrode assembly comprising the steps:
- coating a photosensitive electroconductive paste material onto substantially an entire main surface of a substrate, exposing and developing the photosensitive electroconductive paste to form a center electrode having a predetermined pattern;
- and
- screen-printing insulation paste onto substantially the entire main surface of the substrate, exposing and developing the insulation paste to form an insulation layer having a predetermined pattern;
- the step of forming the center electrode and the step of forming the insulation layer being repeated a predetermined number of times, so that the plurality of center electrodes are arranged on the main surface of the substrate so as to form predetermined intersecting angles relative to each other with the insulation layers being interposed between the center electrodes.
1 more element
Dependencies are inferred from the claim text.