Abstract:
A semiconductor device has a substrate, first passivation layer formed over the substrate, and integrated passive device formed over the substrate. The integrated passive device can include an inductor, capacitor, and resistor. A second passivation layer is formed over the integrated passive device. System components are mounted to the second passivation layer and electrically connect to the second conductive layer. A mold compound is formed over the integrated passive device. A coefficient of thermal expansion of the mold compound is approximately equal to a coefficient of thermal expansion of the system component. The substrate is removed. An opening is etched into the first passivation layer and solder bumps are deposited over the opening in the first passivation layer to electrically connect to the integrated passive device. A metal layer can be formed over the molding compound or first passivation layer for shielding.
Abstract:
A semiconductor device has a temporary carrier. A semiconductor die is oriented with an active surface toward, and mounted to, the temporary carrier. An encapsulant is deposited with a first surface over the temporary carrier and a second surface, opposite the first surface, is deposited over a backside of the semiconductor die. The temporary carrier is removed. A portion of the encapsulant in a periphery of the semiconductor die is removed to form an opening in the first surface of the encapsulant. An interconnect structure is formed over the active surface of the semiconductor die and extends into the opening in the encapsulant layer. A via is formed and extends from the second surface of the encapsulant to the opening. A first bump is formed in the via and electrically connects to the interconnect structure.
Abstract:
A semiconductor device has a base substrate with first and second etch-resistant conductive layers formed over opposing surfaces of the base substrate. First cavities are etched in the base substrate through an opening in the first conductive layer. The first cavities have a width greater than a width of the opening in the first conductive layer. Second cavities are etched in the base substrate between portions of the first or second conductive layer. A semiconductor die is mounted over the base substrate with bumps disposed over the first conductive layer. The bumps are reflowed to electrically connect to the first conductive layer and cause bump material to flow into the first cavities. An encapsulant is deposited over the die and base substrate. A portion of the base substrate is removed down to the second cavities to form electrically isolated base leads between the first and second conductive layers.
Abstract:
A semiconductor device has a semiconductor die and an encapsulant around the semiconductor die. A fan-in interconnect structure is formed over the semiconductor die while leaving the encapsulant devoid of the interconnect structure. The fan-in interconnect structure includes an insulating layer and a conductive layer formed over the semiconductor die. The conductive layer remains within a footprint of the semiconductor die. A portion of encapsulant is removed from over the semiconductor die. A backside protection layer is formed over a non-active surface of the semiconductor die after depositing the encapsulant. The backside protection layer is formed by screen printing or lamination. The backside protection layer includes an opaque, transparent, or translucent material. The backside protection layer is marked for alignment using a laser. A reconstituted panel including the semiconductor die is singulated through the encapsulant to leave encapsulant disposed over a sidewall of the semiconductor die.
Abstract:
A semiconductor device is made by forming a first conductive layer over a sacrificial carrier. A conductive pillar is formed over the first conductive layer. An active surface of a semiconductor die is mounted to the carrier. An encapsulant is deposited over the semiconductor die and around the conductive pillar. The carrier and adhesive layer are removed. A stress relief insulating layer is formed over the active surface of the semiconductor die and a first surface of the encapsulant. The stress relief insulating layer has a first thickness over the semiconductor die and a second thickness less than the first thickness over the encapsulant. A first interconnect structure is formed over the stress relief insulating layer. A second interconnect structure is formed over a second surface of encapsulant opposite the first interconnect structure. The first and second interconnect structures are electrically connected through the conductive pillar.
Abstract:
A semiconductor device has a first conductive layer including a plurality of conductive traces. The first conductive layer is formed over a substrate. The conductive traces are formed with a narrow pitch. A first semiconductor die and second semiconductor die are disposed over the first conductive layer. A first encapsulant is deposited over the first and second semiconductor die. The substrate is removed. A second encapsulant is deposited over the first encapsulant. A build-up interconnect structure is formed over the first conductive layer and second encapsulant. The build-up interconnect structure includes a second conductive layer. A first passive device is disposed in the first encapsulant. A second passive device is disposed in the second encapsulant. A vertical interconnect unit is disposed in the second encapsulant. A third conductive layer is formed over second encapsulant and electrically connected to the build-up interconnect structure via the vertical interconnect unit.
Abstract:
A semiconductor device has a substrate including a plurality of conductive vias formed vertically and partially through the substrate. An encapsulant is deposited over a first surface of the substrate and around a peripheral region of the substrate. A portion of the encapsulant around the peripheral region is removed by a cutting or laser operation to form a notch extending laterally through the encapsulant to a second surface of the substrate opposite the first surface of the substrate. A first portion of the substrate outside the notch is removed by chemical mechanical polishing to expose the conductive vias. A second portion of the substrate is removed by backgrinding prior to or after forming the notch. The encapsulant is coplanar with the substrate after revealing the conductive vias. The absence of an encapsulant/base material interface and coplanarity of the molded substrate results in less over-etching or under-etching and fewer defects.
Abstract:
A semiconductor device includes a substrate and a via extending through the substrate. A first insulating layer is disposed on sidewalls of the via. An electrically conductive material is disposed in the via over the first insulating layer to form a TSV. A first interconnect structure is disposed over a first side of the substrate. A semiconductor die or a component is mounted to the first interconnect structure. An encapsulant is disposed over the first interconnect structure and semiconductor die or component. A second interconnect structure is disposed over the second side of the substrate. The second interconnect structure is electrically connected to the TSV. The second interconnect structure includes a second insulating layer disposed over the second surface of the substrate and TSV, and a first conductive layer disposed over the TSV and in contact with the TSV through the second insulating layer.
Abstract:
A semiconductor wafer contains semiconductor die separated by saw streets. The semiconductor wafer is singulated through a portion of the saw streets to form wafer sections each having multiple semiconductor die per wafer section attached by uncut saw streets. Each wafer section has at least two semiconductor die. The wafer sections are mounted over a temporary carrier in a grid pattern to reserve an interconnect area between the wafer sections. An encapsulant is deposited over the wafer sections and interconnect area. A conductive pillar can be formed in the encapsulant over the interconnect area. An interconnect structure is formed over the wafer sections and encapsulant in the interconnect area. The wafer sections and interconnect area are singulated to separate the semiconductor die each with a portion of the interconnect area. A heat sink or shielding layer can be formed over the wafer sections.
Abstract:
A semiconductor device has a semiconductor wafer with a first conductive layer formed over a surface of the semiconductor wafer. A first insulating layer is formed over the surface of the semiconductor wafer and first conductive layer. A second conductive layer is formed over the first insulating layer and first conductive layer. A second insulating layer is formed over the first insulating layer and second conductive layer. A plurality of openings is formed in the second insulating layer in a bump formation area of the semiconductor wafer to expose the second conductive layer and reduce adverse effects of electro-migration. The openings are separated by portions of the second insulating layer. A UBM layer is formed over the openings in the second insulating layer in the bump formation area electrically connected to the second conductive layer. A bump is formed over the UBM layer.