Abstract:
A semiconductor device includes a semiconductor wafer including a plurality of first semiconductor die. An opening is formed partially through the semiconductor wafer. A plurality of second semiconductor die is disposed over a first surface of the semiconductor wafer. An encapsulant is disposed over the semiconductor wafer and into the opening leaving a second surface of the semiconductor wafer exposed. A portion of the second surface of the semiconductor wafer is removed to separate the first semiconductor die. An interconnect structure is formed over the second semiconductor die and encapsulant. A thermal interface material is deposited over the second surface of the first semiconductor die. A heat spreader is disposed over the thermal interface material. An insulating layer is formed over the first surface of the semiconductor wafer. A vertical interconnect structure is formed around the first semiconductor die. Conductive vias are formed through the first semiconductor die.
Abstract:
A Fo-WLCSP has a first polymer layer formed around a semiconductor die. First conductive vias are formed through the first polymer layer around a perimeter of the semiconductor die. A first interconnect structure is formed over a first surface of the first polymer layer and electrically connected to the first conductive vias. The first interconnect structure has a second polymer layer and a plurality of second vias formed through the second polymer layer. A second interconnect structure is formed over a second surface of the first polymer layer and electrically connected to the first conductive vias. The second interconnect structure has a third polymer layer and a plurality of third vias formed through the third polymer layer. A semiconductor package can be mounted to the WLCSP in a PoP arrangement. The semiconductor package is electrically connected to the WLCSP through the first interconnect structure or second interconnect structure.
Abstract:
A semiconductor wafer has a plurality of first semiconductor die. A first conductive layer is formed over an active surface of the die. A first insulating layer is formed over the active surface and first conductive layer. A repassivation layer is formed over the first insulating layer and first conductive layer. A via is formed through the repassivation layer to the first conductive layer. The semiconductor wafer is singulated to separate the semiconductor die. The semiconductor die is mounted to a temporary carrier. An encapsulant is deposited over the semiconductor die and carrier. The carrier is removed. A second insulating layer is formed over the repassivation layer and encapsulant. A second conductive layer is formed over the repassivation layer and first conductive layer. A third insulating layer is formed over the second conductive layer and second insulating layer. An interconnect structure is formed over the second conductive layer.
Abstract:
A semiconductor device has a first conductive layer and a semiconductor die disposed adjacent to the first conductive layer. An encapsulant is deposited over the first conductive layer and semiconductor die. An insulating layer is formed over the encapsulant, semiconductor die, and first conductive layer. A second conductive layer is formed over the insulating layer. A first portion of the first conductive layer is electrically connected to VSS and forms a ground plane. A second portion of the first conductive layer is electrically connected to VDD and forms a power plane. The first conductive layer, insulating layer, and second conductive layer constitute a decoupling capacitor. A microstrip line including a trace of the second conductive layer is formed over the insulating layer and first conductive layer. The first conductive layer is provided on an embedded dummy die, interconnect unit, or modular PCB unit.
Abstract:
A semiconductor device has a semiconductor die and first insulating layer formed over the semiconductor die. A plurality of first micro-vias can be formed in the first insulating layer. A conductive layer is formed in the first micro-openings and over the first insulating layer. A second insulating layer is formed over the first insulating layer and conductive layer. A portion of the second insulating layer is removed to expose the conductive layer and form a plurality of second micro-openings in the second insulating layer over the conductive layer. The second micro-openings can be micro-vias, micro-via ring, or micro-via slots. Removing the portion of the second insulating layer leaves an island of the second insulating layer over the conductive layer. A bump is formed over the conductive layer. A third insulating layer is formed in the second micro-openings over the bump. The second micro-openings provide stress relief.
Abstract:
A semiconductor device is made by forming a first conductive layer over a carrier. The first conductive layer has a first area electrically isolated from a second area of the first conductive layer. A conductive pillar is formed over the first area of the first conductive layer. A semiconductor die or component is mounted to the second area of the first conductive layer. A first encapsulant is deposited over the semiconductor die and around the conductive pillar. A first interconnect structure is formed over the first encapsulant. The first interconnect structure is electrically connected to the conductive pillar. The carrier is removed. A portion of the first conductive layer is removed. The remaining portion of the first conductive layer includes an interconnect line and UBM pad. A second interconnect structure is formed over a remaining portion of the first conductive layer is removed.
Abstract:
A semiconductor device has a semiconductor die mounted over a surface of a substrate. A mold underfill dispensing needle has a width substantially equal to a width of the semiconductor die. The dispensing needle is placed in fluid communication with a side of the semiconductor die. A mold underfill is deposited from an outlet of the dispensing needle evenly across a width of the semiconductor die into an area between the semiconductor die and substrate without motion of the dispensing needle. The dispensing needle has a shank and the outlet in a T-configuration. The dispensing needle can have a plurality of pole portions between a shank and the outlet. The dispensing needle has a plate between a shank and the outlet. The outlet has an upper edge with a length substantially equal to or greater than a length of a lower edge of the outlet.
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 semiconductor die disposed over a substrate. The semiconductor die and substrate are placed in a chase mold. An encapsulant is deposited over and between the semiconductor die and substrate simultaneous with bonding the semiconductor die to the substrate in the chase mold. The semiconductor die is bonded to the substrate using thermocompression by application of force and elevated temperature. An electrical interconnect structure, such as a bump, pillar bump, or stud bump, is formed over the semiconductor die. A flux material is deposited over the interconnect structure. A solder paste or SOP is deposited over a conductive layer of the substrate. The flux material and SOP provide temporary bond between the semiconductor die and substrate. The interconnect structure is bonded to the SOP. Alternatively, the interconnect structure can be bonded directly to the conductive layer of the substrate, with or without the flux material.
Abstract:
A semiconductor device has a semiconductor die with a die bump pad and substrate with a trace line and integrated bump pad. Conductive bump material is deposited on the substrate bump pad or die bump pad. The semiconductor die is mounted over the substrate so that the bump material is disposed between the die bump pad and substrate bump pad. The bump material is reflowed without a solder mask around the die bump pad or substrate bump pad to form an interconnect. The bump material is self-confined within a footprint of the die bump pad or substrate bump pad. The bump material can be immersed in a flux solution prior to reflow to increase wettability. Alternatively, the interconnect includes a non-fusible base and fusible cap. The volume of bump material is selected so that a surface tension maintains self-confinement of the bump material within the bump pads during reflow.