METHOD OF MANUFACTURING AN INDUCTOR FOR A MICROELECTRONIC DEVICE, METHOD OF MANUFACTURING A SUBSTRATE CONTAINING SUCH AN INDUCTOR, AND SUBSTRATE MANUFACTURED THEREBY,
First Claim
1. A method of manufacturing an inductor for a microelectronic device, the method comprising:
- providing a substrate;
forming a first plurality of inductor windings over the substrate;
forming a magnetic inductor core over the first plurality of inductor windings; and
forming a second plurality of inductor windings over the magnetic inductor core.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of manufacturing an inductor for a microelectronic device comprises providing a substrate (610), forming a first plurality of inductor windings (111, 211, 411, 620, 2030) over the substrate, forming a magnetic inductor core (112, 212, 412, 810) over the first plurality of inductor windings, and forming a second plurality of inductor windings (113, 213, 413, 1010) over the magnetic inductor core. In another embodiment, the method comprises forming the inductor on a sacrificial substrate (1610) such that the inductor can subsequently be mounted onto a carrier tape (1810). In yet another embodiment, a method of manufacturing a substrate for a microelectronic device comprises forming an inductor within a build-up layer (101, 102, 103, 104) of a substrate.
24 Citations
24 Claims
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1. A method of manufacturing an inductor for a microelectronic device, the method comprising:
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providing a substrate; forming a first plurality of inductor windings over the substrate; forming a magnetic inductor core over the first plurality of inductor windings; and forming a second plurality of inductor windings over the magnetic inductor core. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of manufacturing a substrate for a microelectronic device, the method comprising:
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providing a build-up layer of the substrate, the build-up layer comprising an electrically insulating material; forming a first plurality of inductor windings in the build-up layer; forming a magnetic inductor core over the first plurality of inductor windings; forming a second plurality of inductor windings over the magnetic inductor core; and forming a top layer of the substrate over the build-up layer. - View Dependent Claims (11, 12, 13, 14)
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15. A method of manufacturing an inductor for a microelectronic device, the method comprising:
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providing a sacrificial substrate; forming a first metallic seed layer on the sacrificial substrate; patterning the first metallic seed layer in order to define a first plating region on the first metallic seed layer; plating a first electrically conductive material onto the first metallic seed layer in order to form a first plurality of inductor windings in the first plating region; forming a magnetic inductor core over the first plurality of inductor windings; forming a second metallic seed layer over the magnetic inductor core; patterning the second metallic seed layer in order to define a second plating region on the second metallic seed layer; plating a second electrically conductive material onto the second metallic seed layer in order to form a second plurality of inductor windings in the second plating region; removing at least portions of the first and second metallic seed layers in order to complete a formation of the inductor; encapsulating the inductor in a mold compound; separating the inductor from the sacrificial substrate; and placing the inductor onto a carrier tape. - View Dependent Claims (16, 17)
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18. A substrate for a microelectronic device, the substrate comprising:
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a build-up layer comprising an electrically insulating material; a first plurality of inductor windings in the build-up layer; a magnetic inductor core over the first plurality of inductor windings; a second plurality of inductor windings over the magnetic inductor core; and a top layer of the substrate over the build-up layer. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification