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US 2026/0045929 A1Published application
Wafer level package
AssigneeRF360 Singapore Pte. Ltd.
InventorsRobert Felix BYWALEZ, Karl NICOLAUS, Ilya LUKASHOV, Luis MAIER
Life of this patent
Estimating the term…
Abstract
A fullcover package solution in comnination with copper pillars or solder bumps and acoustic cavities is propsed to provide maximum usable design area compared to current thin film acoustic wafer level packages. Manufacturing can be done in a self-aligned interconnection process.
Claims21
(canceled)
A wafer level package, comprising:
- a substrate having a functional layer and electric device structures realized in the functional layer, on the functional layer, or under the functional layer;
- a first package layer applied on the substrate, the first package layer defining cavities between the substrate and the first package layer, at least part of the electric device structures being arranged in the cavities;
- a second package layer applied over a surface of the first package layer;
- pads arranged on the substrate and connected to the electric device structures, a partial area of each pad forming a respective contact area that is not covered by the first package layer or the second package layer;
- and
- an interconnect structure deposited on each respective contact area and extending up to an interconnected height (hi) over the substrate, the interconnected height being higher than a package height (hp) of the first package layer and the second package layer over the substrate;
- wherein a plurality of gaps are disposed between edges of the first package layer and respective circumferences of respective interconnect structures surrounded by corresponding edges of the first package layer.
4 more elements
A wafer level package, comprising:
- a substrate having a functional layer and electric device structures realized in the functional layer, on the functional layer or under the functional layer;
- a plurality of pads arranged on the substrate and each connected to at least one of the electric device structures, a partial area of each pad forming a respective contact area;
- a first package layer applied on the substrate, the first package layer extending partially over at least one pad of the plurality of pads,
- a second package layer extending over a surface of the first package layer and extending partially over the at least one pad;
- and
- an interconnect structure deposited on each respective contact area, wherein a distance between a center of the interconnect structure and the second package layer is less than a distance between the center of the interconnect structure and the first package layer.
3 more elements
Dependencies are inferred from the claim text.