Stacked substrate inductor
First Claim
1. A stacked substrate inductor, comprising:
- a first substrate;
a second substrate stacked on the first substrate such that an upper side of the first substrate is in direct contact with a lower side of the second substrate;
a first inductor within and in direct contact with the first substrate, the first inductor including a first core region;
a second inductor within and in direct contact with the second substrate, the second inductor including a second core region;
an inductor interconnect within and in direct contact with the second substrate, the inductor interconnect configured to electrically couple the first inductor with the second inductor,wherein at least a portion of the first core region overlaps with at least a portion of the second core region,wherein the second inductor comprises a plurality of second substrate inductance loops, andwherein the second substrate encapsulates the second inductor such that each of the plurality of second substrate inductance loops is in direct contact with the second substrate.
1 Assignment
0 Petitions
Accused Products
Abstract
In conventional device packages, separate standalone inductors are provided and mounted on an interposer substrate along with a die. Separate inductors reduce integration density, decrease flexibility, increase footprint, and generally increase costs. To address such disadvantages, it is proposed to provide a part of an inductor in a substrate below a die. The proposed stacked substrate inductor may include a first inductor in a first substrate, a second inductor in a second a second substrate stacked on the first substrate, and an inductor interconnect coupling the first and second inductors. The core regions of the first and second inductors may overlap with each other at least partially. The proposed stacked substrate inductor may enhance integration density, increase flexibility, decrease footprint, and/or reduce costs.
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Citations
28 Claims
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1. A stacked substrate inductor, comprising:
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a first substrate; a second substrate stacked on the first substrate such that an upper side of the first substrate is in direct contact with a lower side of the second substrate; a first inductor within and in direct contact with the first substrate, the first inductor including a first core region; a second inductor within and in direct contact with the second substrate, the second inductor including a second core region; an inductor interconnect within and in direct contact with the second substrate, the inductor interconnect configured to electrically couple the first inductor with the second inductor, wherein at least a portion of the first core region overlaps with at least a portion of the second core region, wherein the second inductor comprises a plurality of second substrate inductance loops, and wherein the second substrate encapsulates the second inductor such that each of the plurality of second substrate inductance loops is in direct contact with the second substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device package, comprising:
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a first substrate; a second substrate stacked on the first substrate such that an upper side of the first substrate is in direct contact with a lower side of the second substrate; a first inductor within and in direct contact with the first substrate, the first inductor including a first core region; a die and a second inductor within and in direct contact with the second substrate, the second inductor including a second core region; an inductor interconnect within and in direct contact with the second substrate, the inductor interconnect configured to electrically couple the first inductor with the second inductor, wherein at least a portion of the first core region overlaps with at least a portion of the second core region, wherein the second inductor comprises a plurality of second substrate inductance loops, and wherein the second substrate encapsulates the second inductor and the die such that each of the plurality of second substrate inductance loops is in direct contact with the second substrate and the die is in direct contact with the second substrate. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A stacked substrate inductor, comprising:
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a first substrate; a second substrate stacked on the first substrate such that an upper side of the first substrate is in direct contact with a lower side of the second substrate; means for providing a first inductance within and in direct contact with the first substrate, the means for providing the first inductance including a first core region; means for providing a second inductance within and in direct contact with the second substrate, the means for providing the second inductance including a second core region; means for providing an interconnect for electrically coupling the means for providing the first inductance with the means for providing the second inductance, wherein the means for providing the interconnect is within and in direct contact with the second substrate, wherein at least a portion of the first core region overlaps with at least a portion of the second core region, wherein the means for providing the second inductance comprises means for providing a plurality of second loop inductances, and wherein the second substrate encapsulates the means for providing the second inductance such that each of the plurality of second loop inductances is in direct contact with the second substrate. - View Dependent Claims (26, 27, 28)
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Specification