Laminated coil component and method for producing the same
AssigneeMurata Manufacturing Co., Ltd.
InventorTomohide Iwasaki
Life of this patent
Estimating the term…
Abstract
A laminated coil component includes a laminate including laminated magnetic layers and a coil disposed in the laminate and including a plurality of internal electrodes. The number of the magnetic layers laminated in a non-superimposed area that does not overlap with the internal electrodes in the lamination direction is greater than the number of the magnetic layers laminated in a superimposed area that overlaps with the internal electrodes in the lamination direction.
Claims12
A laminated coil component, comprising:
- a laminate including laminated magnetic layers;
- and
- a coil disposed in the laminate and including a plurality of internal electrodes;
- wherein
- a number of the magnetic layers laminated in a first area that does not overlap with the plurality of internal electrodes in a lamination direction is greater than a number of the magnetic layers laminated in a second area that does not overlap with the internal electrodes in the lamination direction.
A laminated coil component, comprising:
- a laminate including laminated magnetic layers;
- and
- a coil disposed in the laminate and including a plurality of internal electrodes;
- wherein
- an upper surface and a lower surface of the laminate is substantially flat where a lamination direction of the magnetic layer is defined as a vertical direction;
- the internal electrode disposed at a highest position is curved so as to project upward in a cross section substantially parallel to the lamination direction of the laminate;
- and
- the internal electrode disposed at the lowest position is curved so as to project downward in the cross section substantially parallel to the lamination direction of the laminate.
A laminated coil component, comprising:
- a laminate including laminated magnetic layers;
- and
- a coil disposed in the laminate and including a plurality of internal electrodes;
- wherein
- an upper surface and a lower surface of the laminate is substantially flat where a lamination direction of the magnetic layer is defined as a vertical direction;
- a distance from a center portion of the internal electrode disposed at the highest position to the upper surface of the laminate is less than a distance from both ends of the internal electrode disposed at the highest position to the upper surface of the laminate in a cross section substantially parallel to the lamination direction of the laminate;
- and
- a distance from a center portion of the internal electrode disposed at the lowest position to the lower surface of the laminate is less than a distance from both ends of the internal electrode disposed at the lowest position to the lower surface of the laminate in the cross section substantially parallel to the lamination direction of the laminate.
A method for producing a laminated coil component comprising a laminate including first magnetic layers and second magnetic layers defined by a planar magnetic layer and a partial magnetic layer that are laminated and a coil disposed in the laminate and including a plurality of internal electrodes, the method comprising:
- forming a coil forming layer by laminating the internal electrodes and the first magnetic layers;
- forming the partial magnetic layer in an area that is on the principal surface of the planar magnetic layer and does not overlap with the internal electrodes in a lamination direction;
- laminating the second magnetic layers to form a non-coil-forming layer;
- and
- pressure bonding a laminate formed of the coil forming layer and the non-coil-forming layer in the lamination direction.
Dependencies are inferred from the claim text.