Photonic package and method forming same
First Claim
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1. A method comprising:
- bonding an electronic die to a photonic die, wherein the photonic die comprises a first opening;
attaching an adapter onto the photonic die, wherein a portion of the adapter is at a same level as a portion of the electronic die;
forming a through-hole penetrating through the adapter, wherein the through-hole is aligned to the first opening;
attaching an optical device to the adapter, wherein the optical device comprises a coupler, wherein the optical device is configured to emit a light into the photonic die or receive a light from the photonic die, wherein an optical fiber of the coupler extends into the through-hole and the first opening;
after the adapter is attached to the photonic die, encapsulating the electronic die and the adapter in an encapsulating material; and
performing a planarization to remove top portions of the adapter and the electronic die, wherein the through-hole is exposed after the planarization.
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Abstract
A method includes bonding an electronic die to a photonic die. The photonic die includes an opening. The method further includes attaching an adapter onto the photonic die, with a portion of the adapter being at a same level as a portion of the electronic die, forming a through-hole penetrating through the adapter, with the through-hole being aligned to the opening, and attaching an optical device to the adapter. The optical device is configured to emit a light into the photonic die or receive a light from the photonic die.
49 Citations
20 Claims
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1. A method comprising:
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bonding an electronic die to a photonic die, wherein the photonic die comprises a first opening; attaching an adapter onto the photonic die, wherein a portion of the adapter is at a same level as a portion of the electronic die; forming a through-hole penetrating through the adapter, wherein the through-hole is aligned to the first opening; attaching an optical device to the adapter, wherein the optical device comprises a coupler, wherein the optical device is configured to emit a light into the photonic die or receive a light from the photonic die, wherein an optical fiber of the coupler extends into the through-hole and the first opening; after the adapter is attached to the photonic die, encapsulating the electronic die and the adapter in an encapsulating material; and performing a planarization to remove top portions of the adapter and the electronic die, wherein the through-hole is exposed after the planarization. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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forming an adapter comprising; forming a first opening in a blank plate; and forming a protection layer having a portion extending into the first opening; attaching the adapter onto a photonic die, wherein the photonic die is in a wafer; bonding an electronic die onto the photonic die; encapsulating the electronic die and the adapter in an encapsulating material; performing a planarization on the encapsulating material to expose the adapter, the first opening in the adapter, and the electronic die; and sawing the encapsulating material and the wafer to form a plurality of packages, wherein one of the packages comprises the adapter, the photonic die, and the electronic die. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A package comprising:
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a photonic die comprising a first opening; an electronic die over and bonded to the photonic die; an adapter over and attached to the photonic die, wherein the adapter comprises a through-hole penetrating through the adapter, and the through-hole is aligned to the first opening; an optical coupler, wherein a portion of the optical coupler overlaps the through-hole in the adapter, wherein an optical fiber portion of the optical coupler extends into the first opening, and remaining portions of the optical coupler other than the optical fiber portion are outside of the photonic die and the first opening; and an encapsulant over the photonic die, wherein the electronic die and the adapter are encapsulated in the encapsulant, and wherein top surfaces of the encapsulant, the adapter, and the electronic die are substantially coplanar. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification