MULTILAYER COIL DEVICE
First Claim
1. A multilayer coil device comprising:
- a multilayer body including a plurality of insulating layers, a coil part composed of a plurality of substantially spiral coil patterns, and a pair of extraction electrodes connected to both ends of the coil part, the multilayer body being formed by alternately stacking the insulating layers and the coil patterns; and
a pair of external electrodes formed on both end faces of the multilayer body and electrically connected to the respective extraction electrodes,wherein the number of turns of each of the substantially spiral coil patterns is more than one; and
each of the substantially spiral coil patterns has a protrusion located in a specific region of the substantially spiral coil pattern where a number of coil pattern portions of the substantially spiral coil pattern that cross a virtual line extending radially outward from a center of the coil pattern is smaller than that in another region of the substantially spiral coil pattern, the protrusion being provided as an additional part of a specific coil pattern portion that is closest to the center of the substantially spiral coil pattern in the specific region, the protrusion protruding toward the center of the substantially spiral coil pattern such that a line width of the specific coil pattern portion is larger than that of other coil pattern portions in the other region of the substantially spiral coil pattern.
1 Assignment
0 Petitions
Accused Products
Abstract
A multilayer coil device is formed by alternately stacking a plurality of insulating layers and a plurality of substantially spiral coil patterns. In the multilayer coil device, the number of turns of each of the substantially spiral coil patterns is more than one. Each of the substantially spiral coil patterns has a protrusion protruding toward a center of the substantially spiral coil pattern. The protrusion is located in a specific region where the number of coil pattern portions that cross a virtual line extending radially outward from the center of the coil pattern is smaller than that in another region of the substantially spiral coil pattern. The protrusion is provided as an additional part of a coil pattern portion that is closest to the center of the substantially spiral coil pattern in the specific region.
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Citations
3 Claims
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1. A multilayer coil device comprising:
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a multilayer body including a plurality of insulating layers, a coil part composed of a plurality of substantially spiral coil patterns, and a pair of extraction electrodes connected to both ends of the coil part, the multilayer body being formed by alternately stacking the insulating layers and the coil patterns; and a pair of external electrodes formed on both end faces of the multilayer body and electrically connected to the respective extraction electrodes, wherein the number of turns of each of the substantially spiral coil patterns is more than one; and each of the substantially spiral coil patterns has a protrusion located in a specific region of the substantially spiral coil pattern where a number of coil pattern portions of the substantially spiral coil pattern that cross a virtual line extending radially outward from a center of the coil pattern is smaller than that in another region of the substantially spiral coil pattern, the protrusion being provided as an additional part of a specific coil pattern portion that is closest to the center of the substantially spiral coil pattern in the specific region, the protrusion protruding toward the center of the substantially spiral coil pattern such that a line width of the specific coil pattern portion is larger than that of other coil pattern portions in the other region of the substantially spiral coil pattern. - View Dependent Claims (2, 3)
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Specification