Coil assembly
First Claim
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1. A coil assembly comprising:
- a first magnetic mother board having a flat upper surface;
a coil located on said upper surface of said first magnetic mother board, said coil including stacked coil conductors and insulating layers; and
a second magnetic mother board including a recess having a shape corresponding to that of said coil,wherein said upper surface of said first magnetic mother board is joined to one side of said second magnetic mother board on which said recess is formed, with said coil completely encased in said joined first and second magnetic mother boards.
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Abstract
A coil assembly includes a first magnetic mother board, and a second magnetic mother board. A coil is formed on the first magnetic mother board and composed of stacked coil conductors and insulating layers. A recess or groove is formed in the second magnetic mother board and has a shape corresponding to the shape of the coil. The coil is closely fit into the recess so as to insure connection of the first and second magnetic mother boards. Direct connection of the first and second magnetic mother boards provides a completely closed magnetic path. The insulating layers have no magnetic materials so as to provide a better electromagnetic connection.
25 Citations
20 Claims
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1. A coil assembly comprising:
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a first magnetic mother board having a flat upper surface; a coil located on said upper surface of said first magnetic mother board, said coil including stacked coil conductors and insulating layers; and a second magnetic mother board including a recess having a shape corresponding to that of said coil, wherein said upper surface of said first magnetic mother board is joined to one side of said second magnetic mother board on which said recess is formed, with said coil completely encased in said joined first and second magnetic mother boards. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of making a coil assembly, said method comprising the steps of:
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forming a first magnetic mother board having a flat upper surface; forming a coil on said upper surface of said first magnetic mother board, said coil including stacked coil conductors and insulating layers; and forming a second magnetic mother board including a recess having a shape corresponding to that of said coil, wherein said upper surface of said first magnetic mother board is joined to one side of said second magnetic mother board on which said recess is formed, with said coil being inserted into said recess such that said coil is completely encased in said joined first and second magnetic mother boards. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method of making a coil assembly, said method comprising the steps of:
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forming a first magnetic mother board having a flat upper surface; forming a plurality of coils on said upper surface of said first magnetic mother board, each of said coils including stacked coil conductors and insulating layers; and forming a second magnetic mother board including a recess having a shape corresponding to that of said plurality of coils, wherein said upper surface of said first magnetic mother board is joined to one side of said second magnetic mother board on which said recess is formed, with said plurality of coils being completely encased in said first and second mother boards. - View Dependent Claims (18)
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- 19. A method according to claim if, comprising the further step of cutting said coil assembly into a plurality of coil sub-assembles.
Specification