Micro-interconnects for light-emitting diodes
First Claim
1. A method of fabricating a plurality of light emitting diode (LED) packages, comprising:
- bonding a plurality of separated LED dies to a substrate, wherein each of the plurality of separated LED dies includes an n-doped layer, a quantum well active layer, and a p-doped layer;
depositing an isolation layer conformally over the plurality of separated LED dies and the substrate;
etching the isolation layer to form a plurality of via openings to expose portions of each LED die and portions of the substrate;
forming electrical interconnects over the isolation layer and inside the plurality of via openings to electrically connect between one of the doped layers of each LED die and the substrate, wherein the etching and the forming the electrical interconnects are performed such that;
the exposed portions of one of the separated dies include a contact metallization;
the exposed portions of the substrate include a contact electrode disposed on the substrate; and
the contact metallization and the contact electrode are electrical interconnected; and
dicing the plurality of separated LED dies and the substrate into a plurality of LED packages.
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Accused Products
Abstract
The present disclosure provides a method of fabricating a light emitting diode (LED) package. The method includes bonding a plurality of separated light emitting diode (LED) dies to a substrate, wherein each of the plurality of separated LED dies includes an n-doped layer, a quantum well active layer, and a p-doped layer; depositing an isolation layer over the plurality of separated LED dies and the substrate; etching the isolation layer to form a plurality of via openings to expose portions of each LED die and portions of the substrate; forming electrical interconnects over the isolation layer and inside the plurality of via openings to electrically connect between one of the doped layers of each LED die and the substrate; and dicing the plurality of separated LED dies and the substrate into a plurality of LED packages.
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Citations
18 Claims
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1. A method of fabricating a plurality of light emitting diode (LED) packages, comprising:
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bonding a plurality of separated LED dies to a substrate, wherein each of the plurality of separated LED dies includes an n-doped layer, a quantum well active layer, and a p-doped layer; depositing an isolation layer conformally over the plurality of separated LED dies and the substrate; etching the isolation layer to form a plurality of via openings to expose portions of each LED die and portions of the substrate; forming electrical interconnects over the isolation layer and inside the plurality of via openings to electrically connect between one of the doped layers of each LED die and the substrate, wherein the etching and the forming the electrical interconnects are performed such that; the exposed portions of one of the separated dies include a contact metallization; the exposed portions of the substrate include a contact electrode disposed on the substrate; and the contact metallization and the contact electrode are electrical interconnected; and dicing the plurality of separated LED dies and the substrate into a plurality of LED packages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of fabricating a plurality of light emitting diode (LED) packages, comprising:
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providing a plurality of separated LED dies, wherein each of the plurality of separated dies includes an n-doped layer, a quantum well active layer, a p-doped layer, and a p-contact metal layer on a carrier substrate; bonding the carrier substrate of the plurality of separated LED dies to a packaging substrate, the packaging substrate including a through silicon via (TSV); depositing an isolation layer over the plurality of separated LED dies and the packaging substrate; etching the isolation layer to form a plurality of via openings to expose portions of each of the plurality of separated LED dies and portions of the packaging substrate, wherein at least one of the plurality of via openings is aligned with the TSV; depositing an interconnect layer over the isolation layer and the plurality of via openings to form electrical interconnects between the n-doped layer of each of the plurality of separated LED dies and the packaging substrate; forming a phosphor layer and a lens over each of the plurality of separated LED dies; and dicing the plurality of separated LED dies and the packaging substrate into a plurality of LED packages. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method, comprising:
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providing a packaging substrate, the packaging substrate having a first side and a second side opposite the first side, wherein the packaging substrate includes a first pad and a second pad disposed over the first side and a third pad and a fourth pad disposed over the second side, and wherein the packaging substrate includes a first through silicon via (TSV) and a second TSV each extending from the first side to the second side, the first TSV electrically coupling the first pad to the third pad, and the second TSV electrically coupling the second pad to the fourth pad; bonding a light-emitting diode (LED) die to the first pad, the LED die including an n-doped layer, a quantum well active layer, and a p-doped layer; forming an isolation layer over the LED die and over the packaging substrate; etching the isolation layer to form a first opening and a second opening in the isolation layer, the first opening exposing a portion of the LED die, the second opening exposing the second pad; and depositing a conductive layer over the isolation layer, the conductive layer filling the first opening and the second opening, thereby electrically interconnecting the LED die and the second TSV. - View Dependent Claims (17, 18)
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Specification