Chip-substrate composite semiconductor device
AssigneeInfineon Technologies AG
InventorsCarsten Joachim von Koblinski, Tobias Polster
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Abstract
A semiconductor device includes a semiconductor chip having a front side and a backside. A first electrode is disposed on the front side of the semiconductor chip. An inorganic substrate includes a first side, a second side opposite the first side, and a first lateral side extending between the first side and the second side. A metal layer is disposed over the first side and the first lateral side of the inorganic substrate. The first electrode is bonded to the metal layer.
Claims24
A semiconductor device, comprising:
- a semiconductor chip comprising a front side and a backside, wherein a first electrode is disposed on the front side of the semiconductor chip;
- an inorganic substrate comprising a first side, a second side opposite the first side, and a first lateral side extending between the first side and the second side;
- and
- a metal layer disposed over the first side and the first lateral side of the inorganic substrate,
- wherein the first electrode is bonded to the metal layer.
A method of manufacturing a plurality of semiconductor devices, the method comprising:
- providing a semiconductor substrate comprising a front side and a backside, wherein a plurality of first electrodes is disposed on the front side of the semiconductor substrate;
- providing an inorganic substrate comprising a first side and a second side opposite the first side;
- forming a grid of trenches in the first side of the inorganic substrate, the grid of trenches defining a pattern of pedestals at the first side;
- forming a metal layer over the first side of the inorganic substrate, wherein the metal layer extends over pedestals and side walls of the trenches;
- attaching the semiconductor substrate to the inorganic substrate by bonding the plurality of first electrodes to the structured metal layer;
- thinning the semiconductor substrate to obtain a thinned semiconductor substrate;
- separating the thinned semiconductor substrate into a plurality of semiconductor chips;
- and
- separating the inorganic substrate into the plurality of semiconductor devices.
Dependencies are inferred from the claim text.