Wafer level packaging of microbolometer vacuum package assemblies
First Claim
1. A system comprising:
- a central chamber configured to receive and provide wafers;
a load lock module configured to receive wafers from and provide wafers to the central chamber; and
a wafer alignment and bonding chamber configured to receive a first wafer from the central chamber, receive a second wafer from the central chamber, bond the first wafer and the second wafer to form a bonded wafer, and provide the bonded wafer to the central chamber, wherein the wafer alignment and bonding chamber comprises;
a first wafer chuck configured to receive the first wafer;
a second wafer chuck configured to receive the second wafer, wherein the first wafer chuck is disposed within the wafer alignment and bonding chamber in facing opposition to the second wafer chuck; and
a radiation shield configured to move between a first position and a second position, wherein the radiation shield is disposed between the first wafer chuck and the second wafer chuck in the first position, and wherein the first wafer chuck and/or the second wafer chuck is configured to move to contact the second wafer received by the second wafer chuck with the first wafer received by the first wafer chuck,wherein the central chamber, the load lock module, and the wafer alignment and bonding chamber are configured to process the wafers under one or more vacuum environments.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for the wafer level packaging (WLP) of micro-bolometer vacuum package assemblies (VPAs), in one embodiment, includes a wafer alignment and bonding chamber, a bolometer wafer chuck and a lid wafer chuck disposed within the chamber in vertically facing opposition to each other, means for creating a first ultra-high vacuum (UHV) environment within the chamber, means for heating and cooling the bolometer wafer chuck and the lid wafer chuck independently of each other, means for moving the lid wafer chuck in the vertical direction and relative to the bolometer wafer chuck, means for moving the bolometer wafer chuck translationally in two orthogonal directions in a horizontal plane and rotationally about a vertical axis normal to the horizontal plane, and means for aligning a fiducial on a bolometer wafer held by the bolometer wafer chuck with a fiducial on a lid wafer held by the lid wafer chuck.
73 Citations
20 Claims
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1. A system comprising:
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a central chamber configured to receive and provide wafers; a load lock module configured to receive wafers from and provide wafers to the central chamber; and a wafer alignment and bonding chamber configured to receive a first wafer from the central chamber, receive a second wafer from the central chamber, bond the first wafer and the second wafer to form a bonded wafer, and provide the bonded wafer to the central chamber, wherein the wafer alignment and bonding chamber comprises; a first wafer chuck configured to receive the first wafer; a second wafer chuck configured to receive the second wafer, wherein the first wafer chuck is disposed within the wafer alignment and bonding chamber in facing opposition to the second wafer chuck; and a radiation shield configured to move between a first position and a second position, wherein the radiation shield is disposed between the first wafer chuck and the second wafer chuck in the first position, and wherein the first wafer chuck and/or the second wafer chuck is configured to move to contact the second wafer received by the second wafer chuck with the first wafer received by the first wafer chuck, wherein the central chamber, the load lock module, and the wafer alignment and bonding chamber are configured to process the wafers under one or more vacuum environments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification