3D package configuration
AssigneeCCS Technology, Inc.
InventorsTung-Po Sung, Chang-Cheng Lo
Life of this patent
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Abstract
A novel 3D package configuration is provided by stacking a folded flexible circuit board structure on a package substrate and electrically connected therewith based on the foldable characteristics of the flexible circuit board, and the high temperature resistance of the flexible circuit board which is suitable for insulating layer process, metal layer process, photolithography process, etching and development process, to make conventional semiconductor dies of various functions be bonded on one die and/or two side of a flexible circuit board and electrically connected therewith in advance.
Claims6
A 3D package configuration, comprising:
- a package substrate;
- and
- a folded flexible circuit board structure vertically stacked on the package substrate and electrically connected therewith through package substrate bonding pads thereof, comprising:
- a folded flexible circuit board formed by folding a strip-shaped flexible circuit board, wherein the strip-shaped flexible circuit board comprises a first surface and a second surface opposite to each other, and the strip-shaped flexible circuit board includes a first die bonding zone and at least one second die bonding zone;
- at least one first semiconductor die bonded to the first die bonding zone and electrically connected to the strip-shaped flexible circuit board;
- and
- at least one second semiconductor die bonded to the at least one second die bonding zone and electrically connected to the strip-shaped flexible circuit board;
- wherein, the at least one second semiconductor die is vertically stacked above the at least one first semiconductor die;
- wherein the strip-shaped flexible circuit board comprises:
- a strip-shaped flexible insulating substrate;
- a circuit formed on a surface of the strip-shaped flexible insulating substrate;
- and
- a strip-shaped insulating layer overlaying the circuit;
- wherein, the first die bonding zone comprises a plurality of first die bonding pads electrically connected to the circuit to make the first semiconductor die electrically connected to the circuit through the first die bonding pads, and the at least one second die bonding zone comprises a plurality of second die bonding pads electrically connected to the circuit to make the at least one second semiconductor die electrically connected to the circuit through the second die bonding pads, and a plurality of package substrate bonding pads under the first die bonding zone are formed on the second surface of the strip-shaped flexible circuit board, and each of the package substrate bonding pads is electrically connected to each of the first die bonding pads corresponding thereof through a conductive hole.
Dependencies are inferred from the claim text.