Wafer interposer assembly
First Claim
Patent Images
1. A wafer interposer assembly comprising:
- a semiconductor wafer having a die;
a redistribution layer (RDL) pad electrically connected to the die;
an epoxy layer deposited on the surface of the redistribution layer pad and, the die, the epoxy layer having an opening therethrough about the redistribution layer pad, and an interposer pad positioned in the opening in electrical contact with the redistribution layer pad.
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Abstract
A wafer interposer assembly and a system for building the same are disclosed. The wafer interposer assembly includes a semiconductor wafer (10) having a die (11) and a redistribution layer pad (13) electrically connected to the die (11). An epoxy layer (20) is deposited on the surface of the redistribution layer pad (13) and the die (11). An interposer pad (50) is positioned in an opening (40) in the epoxy layer (20) in electrical contact with the redistribution layer pad (13).
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Citations
29 Claims
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1. A wafer interposer assembly comprising:
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a semiconductor wafer having a die;
a redistribution layer (RDL) pad electrically connected to the die;
an epoxy layer deposited on the surface of the redistribution layer pad and, the die, the epoxy layer having an opening therethrough about the redistribution layer pad, and an interposer pad positioned in the opening in electrical contact with the redistribution layer pad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A wafer interposer assembly comprising:
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a semiconductor wafer having a plurality of die;
a plurality of redistribution layer pads electrically connected to each die, the redistribution layer pads including a material reflective to laser frequencies;
an epoxy layer deposited on the surface of the redistribution layer pads and the dies, the epoxy layer having a plurality of openings therethrough corresponding to the redistribution layer pads, the epoxy layer having a flat surface that is trimmed to a height of at least the length of the redistribution layer pads; and
a plurality of interposer pads positioned in the openings in electrical contact with the redistribution layer pads. - View Dependent Claims (17, 18)
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19. A wafer interposer assembly comprising:
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a semiconductor wafer having a die disposed therein having a surface having a peripheral region and an inboard region;
a plurality of die pads disposed on the peripheral region of the die;
a plurality of redistribution layer pads disposed on the inboard region of the die, at least one redistribution layer pad being electrically connected to at least one die pad via a connector;
an epoxy layer deposited on the surface of the redistribution layer pad and the die, the epoxy layer having an opening therethrough about the redistribution layer pad; and
an interposer pad positioned in the opening in electrical contact with the redistribution layer pad. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification