Abstract:
A semiconductor device comprises a first semiconductor package including a conductive layer. A substrate including an interconnect structure is disposed over the conductive layer. The interconnect structure of the substrate with the conductive layer of the first semiconductor package are self-aligned. A plurality of openings is formed in the substrate. An adhesive is disposed between the substrate and the first semiconductor package and in the openings of the substrate. A redistribution layer (RDL) is formed over the first semiconductor package opposite the substrate. A pitch of the substrate is different from a pitch of the RDL. The adhesive extends to the interconnect structure of the substrate. A second semiconductor package is disposed over the substrate and the first semiconductor package.
Abstract:
Methods of producing a semiconductor package using dual-sided thermal compression bonding includes providing a substrate having an upper surface and a lower surface. A first device having a first surface and a second surface can be provided along with a second device having a third surface and a fourth surface. The first surface of the first device can be coupled to the upper surface of the substrate while the third surface of the second device can be coupled to the lower surface of the substrate, the coupling occurring simultaneously to produce the semiconductor package.
Abstract:
A semiconductor wafer has a contact pad. A first insulating layer is formed over the wafer. A second insulating layer is formed over the first insulating layer and contact pad. A portion of the second insulating layer is removed to expose the contact pad. A first UBM layer is formed over and follows a contour of the second insulating layer and contact pad to create a well over the contact pad. A first buffer layer is formed in the well over the first UBM layer and the contact pad. A second UBM layer is formed over the first UBM layer and first buffer layer. A third UBM layer is formed over the second UBM layer. A bump is formed over the third UBM layer. The first buffer layer reduces stress on the bump and contact pad. A second buffer layer can be formed between the second and third UBM layers.
Abstract:
A semiconductor device includes a substrate with contact pads. A mask is disposed over the substrate. Aluminum-wettable conductive paste is printed over the contact pads of the substrate. A semiconductor die is disposed over the aluminum-wettable conductive paste. The aluminum-wettable conductive paste is reflowed to form an interconnect structure over the contact pads of the substrate. The contact pads include aluminum. Contact pads of the semiconductor die are disposed over the aluminum-wettable conductive paste. The aluminum-wettable conductive paste is reflowed to form an interconnect structure between the contact pads of the semiconductor die and the contact pads of the substrate. The interconnect structure is formed directly on the contact pads of the substrate and semiconductor die. The contact pads of the semiconductor die are etched prior to reflowing the aluminum-wettable conductive paste. An epoxy pre-dot to maintain a separation between the semiconductor die and substrate.
Abstract:
A semiconductor device has a build-up interconnect structure including a first insulating layer with a first material and a second insulating layer with a second material. A first conductive layer is formed over the first insulating layer, and the second insulating layer is formed over the first conductive layer. An optional third insulating layer has the second material and is formed over the second insulating layer. A fourth insulating layer has the first material and is formed over the third insulating layer. The second, third, and fourth insulating layers are cured sequentially or simultaneously. The first material includes a greater tensile strength, elastic modulus, and CTE than the second material. The build-up interconnect structure is formed over a semiconductor wafer or semiconductor die in a reconstituted panel. Alternatively, the build-up interconnect structure is formed over a carrier and a semiconductor die is mounted over the build-up interconnect structure.
Abstract:
A semiconductor device has a semiconductor die disposed over the substrate. A conductive via is formed partially through the substrate. An encapsulant is deposited over the semiconductor die and substrate. An insulating layer is formed over the semiconductor die and encapsulant. The insulating layer includes an organic or inorganic insulating material. An adhesive layer is deposited over the insulating layer. The adhesive layer contacts only the insulating layer. A carrier is bonded to the adhesive layer. The insulating layer provides a single CTE across the entire bonding interface between the adhesive layer and semiconductor die and encapsulant. The constant CTE of the insulating layer reduces stress across the bonding interface. A portion of the substrate is removed by backgrinding to expose the conductive via. An insulating layer is formed over the substrate around the conductive via. An interconnect structure is formed over the conductive via.
Abstract:
A semiconductor device has a substrate with a first conductive layer over a surface of the substrate and a plurality of cavities exposing the first conductive layer. A first semiconductor die having conductive TSV is mounted into the cavities of the substrate. A first insulating layer is formed over the substrate and first semiconductor die and extends into the cavities to embed the first semiconductor die within the substrate. A portion of the first insulating layer is removed to expose the conductive TSV. A second conductive layer is formed over the conductive TSV. A portion of the first conductive layer is removed to form electrically common or electrically isolated conductive segments of the first conductive layer. A second insulating layer is formed over the substrate and conductive segments of the first conductive layer. A second semiconductor die is mounted over the substrate electrically connected to the second conductive layer.
Abstract:
A flip chip semiconductor package has a substrate with a plurality of active devices. A contact pad is formed on the substrate in electrical contact with the plurality of active devices. A passivation layer, second barrier layer, and adhesion layer are formed between the substrate and an intermediate conductive layer. The intermediate conductive layer is in electrical contact with the contact pad. A copper inner core pillar is formed by plating over the intermediate conductive layer. The inner core pillar has a rectangular, cylindrical, toroidal, or hollow cylinder form factor. A solder bump is formed around the inner core pillar by plating solder material and reflowing the solder material to form the solder bump. A first barrier layer and wetting layer are formed between the inner core pillar and solder bump. The solder bump is in electrical contact with the intermediate conductive layer.
Abstract:
A semiconductor device has a semiconductor die with a plurality of composite bumps formed over a surface of the semiconductor die. The composite bumps have a fusible portion and non-fusible portion, such as a conductive pillar and bump formed over the conductive pillar. The composite bumps can also be tapered. Conductive traces are formed over a substrate with interconnect sites having edges parallel to the conductive trace from a plan view for increasing escape routing density. The interconnect site can have a width less than 1.2 times a width of the conductive trace. The composite bumps are wider than the interconnect sites. The fusible portion of the composite bumps is bonded to the interconnect sites so that the fusible portion covers a top surface and side surface of the interconnect sites. An encapsulant is deposited around the composite bumps between the semiconductor die and substrate.
Abstract:
A semiconductor wafer has a plurality of first semiconductor die. A second semiconductor die is mounted to the first semiconductor die. A shielding layer is formed between the first and second semiconductor die. An electrical interconnect, such as conductive pillar, bump, or bond wire, is formed between the first and second semiconductor die. A conductive TSV can be formed through the first and second semiconductor die. An encapsulant is deposited over the first and second semiconductor die and electrical interconnect. A heat sink is formed over the second semiconductor die. An interconnect structure, such as a bump, can be formed over the second semiconductor die. A portion of a backside of the first semiconductor die is removed. A protective layer is formed over exposed surfaces of the first semiconductor die. The protective layer covers the exposed backside and sidewalls of the first semiconductor die.