Abstract:
A semiconductor wafer has a plurality of semiconductor die separated by a saw street. The wafer is mounted to dicing tape. The wafer is singulated through the saw street to expose side surfaces of the semiconductor die. An ESD protection layer is formed over the semiconductor die and around the exposed side surfaces of the semiconductor die. The ESD protection layer can be a metal layer, encapsulant film, conductive polymer, conductive ink, or insulating layer covered by a metal layer. The ESD protection layer is singulated between the semiconductor die. The semiconductor die covered by the ESD protection layer are mounted to a temporary carrier. An encapsulant is deposited over the ESD protection layer covering the semiconductor die. The carrier is removed. An interconnect structure is formed over the semiconductor die and encapsulant. The ESD protection layer is electrically connected to the interconnect structure to provide an ESD path.
Abstract:
A semiconductor device has a first semiconductor die with a shielding layer formed over its back surface. The first semiconductor die is mounted to a carrier. A first insulating layer is formed over the shielding layer. A second semiconductor die is mounted over the first semiconductor die separated by the shielding layer and first insulating layer. A second insulating layer is deposited over the first and second semiconductor die. A first interconnect structure is formed over the second semiconductor die and second insulating layer. A second interconnect structure is formed over the first semiconductor die and second insulating layer. The shielding layer is electrically connected to a low-impedance ground point through a bond wire, RDL, or TSV. The second semiconductor die may also have a shielding layer formed on its back surface. The semiconductor die are bonded through the metal-to-metal shielding layers.
Abstract:
A semiconductor device has conductive pillars formed over a carrier. A first semiconductor die is mounted over the carrier between the conductive pillars. An encapsulant is deposited over the first semiconductor die and carrier and around the conductive pillars. A recess is formed in a first surface of the encapsulant over the first semiconductor die. The recess has sloped or stepped sides. A first interconnect structure is formed over the first surface of the encapsulant. The first interconnect structure follows a contour of the recess in the encapsulant. The carrier is removed. A second interconnect structure is formed over a second surface of the encapsulant and first semiconductor die. The first and second interconnect structures are electrically connected to the conductive pillars. A second semiconductor die is mounted in the recess. A third semiconductor die is mounted over the recess and second semiconductor die.
Abstract:
A semiconductor device is made by providing a temporary carrier and providing a semiconductor die having a plurality of bumps formed on its active surface. An adhesive material is deposited as a plurality of islands or bumps on the carrier or active surface of the semiconductor die. The adhesive layer can also be deposited as a continuous layer over the carrier or active surface of the die. The semiconductor die is mounted to the carrier. An encapsulant is deposited over the die and carrier. The adhesive material holds the semiconductor die in place to the carrier while depositing the encapsulant. An interconnect structure is formed over the active surface of the die. The interconnect structure is electrically connected to the bumps of the semiconductor die. The adhesive material can be removed prior to forming the interconnect structure, or the interconnect structure can be formed over the adhesive material.
Abstract:
A semiconductor wafer has a plurality of semiconductor die separated by a peripheral region. A trench is formed in the peripheral region of the wafer. A via is formed on the die. The trench extends to and is continuous with the via. A first conductive layer is deposited in the trench and via to form conductive TSV. The first conductive layer is conformally applied or completely fills the trench and via. The trench has a larger area than the vias which accelerates formation of the first conductive layer. A second conductive layer is deposited over a front surface of the die. The second conductive layer is electrically connected to the first conductive layer. The first and second conductive layers can be formed simultaneously. A portion of a back surface of the wafer is removed to expose the first conductive layer. The die can be electrically interconnected through the TSVs.
Abstract:
A semiconductor device is made by forming an interconnect structure over a substrate. A semiconductor die is mounted to the interconnect structure. The semiconductor die is electrically connected to the interconnect structure. A ground pad is formed over the interconnect structure. An encapsulant is formed over the semiconductor die and interconnect structure. A shielding cage can be formed over the semiconductor die prior to forming the encapsulant. A shielding layer is formed over the encapsulant after forming the interconnect structure to isolate the semiconductor die with respect to inter-device interference. The shielding layer conforms to a geometry of the encapsulant and electrically connects to the ground pad. The shielding layer can be electrically connected to ground through a conductive pillar. A backside interconnect structure is formed over the interconnect structure, opposite the semiconductor die.
Abstract:
A semiconductor device is made by providing a sacrificial substrate and depositing an adhesive layer over the sacrificial substrate. A first conductive layer is formed over the adhesive layer. A polymer pillar is formed over the first conductive layer. A second conductive layer is formed over the polymer pillar to create a conductive pillar with inner polymer core. A semiconductor die or component is mounted over the substrate. An encapsulant is deposited over the semiconductor die or component and around the conductive pillar. A first interconnect structure is formed over a first side of the encapsulant. The first interconnect structure is electrically connected to the conductive pillar. The sacrificial substrate and adhesive layers are removed. A second interconnect structure is formed over a second side of the encapsulant opposite the first interconnect structure. The second interconnect structure is electrically connected to the conductive pillar.
Abstract:
A semiconductor wafer has an insulating layer formed over an active surface of the wafer. A conductive layer is formed over the insulating layer. A first via is formed from a back surface of the semiconductor wafer through the semiconductor wafer and insulating layer to the conductive layer. A conductive material is deposited in the first via to form a conductive TSV. An insulating material can be deposited in the first via to form an insulating core within the conductive via. After forming the conductive TSV, a second via is formed around the conductive TSV from the back surface of the semiconductor wafer through the semiconductor wafer and insulating layer to the conductive layer. An insulating material is deposited in the second via to form an insulating annular ring. The conductive via can be recessed within or extend above a surface of the semiconductor die.
Abstract:
A semiconductor device has a first thermally conductive layer formed over a first surface of a semiconductor die. A second surface of the semiconductor die is mounted to a sacrificial carrier. An encapsulant is deposited over the first thermally conductive layer and sacrificial carrier. The encapsulant is planarized to expose the first thermally conductive layer. A first insulating layer is formed over the second surface of the semiconductor die and a first surface of the encapsulant. A portion of the first insulating layer over the second surface of the semiconductor die is removed. A second thermally conductive layer is formed over the second surface of the semiconductor die within the removed portion of the first insulating layer. An electrically conductive layer is formed within the insulating layer around the second thermally conductive layer. A heat sink can be mounted over the first thermally conductive layer.
Abstract:
A semiconductor device has an interposer mounted over a carrier. The interposer includes TSV formed either prior to or after mounting to the carrier. An opening is formed in the interposer. The interposer can have two-level stepped portions with a first vertical conduction path through a first stepped portion and second vertical conduction path through a second stepped portion. A first and second semiconductor die are mounted over the interposer. The second die is disposed within the opening of the interposer. A discrete semiconductor component can be mounted over the interposer. A conductive via can be formed through the second die or encapsulant. An encapsulant is deposited over the first and second die and interposer. A portion of the interposer can be removed to that the encapsulant forms around a side of the semiconductor device. An interconnect structure is formed over the interposer and second die.