A stacked device includes a stacked structure in which a plurality of semiconductors are electrically connected to each other, the semiconductor includes a surface on which a plurality of terminals are provided, the plurality of terminals include a terminal that bonds and electrically connects the semiconductors to each other and a terminal that bonds the semiconductors to each other and does not electrically connect the semiconductors to each other, an area ratio of the plurality of terminals on the surface of the semiconductor is 40% or higher, and an area ratio of the terminals that bond and electrically connect the semiconductors to each other among the plurality of terminals is lower than 50%.

An RF circuit module includes a module substrate, a first substrate in which a first circuit is implemented, and a second substrate in which a second circuit is implemented. The first circuit includes a control circuit that controls an operation of the second circuit. The second circuit includes a radio-frequency amplifier circuit that amplifies an RF signal. The second substrate is mounted on the first substrate. The first substrate is disposed on the module substrate such that a circuit forming surface faces the module substrate. The first substrate and the second substrate have a circuit-to-circuit connection wire that electrically connects the first circuit and the second circuit without intervening the module substrate.

A stacking structure including a first die, a second die stacked on the first die, and a filling material is provided. The first die has a first bonding structure, and the first bonding structure includes first bonding pads and a first heat dissipating element. The second die has a second bonding structure, and the second bonding structure includes second bonding pads and a second heat dissipating element. The first bonding pads are bonded with the second bonding pads. The first heat dissipating element is connected to one first bonding pad of the first bonding pads and the second heat dissipating element is connected to one second bonding pad of the second bonding pads. The filling material is disposed over the first die and laterally around the second die. The first and second dies are bonded through the first and second bonding structures.

A semiconductor structure and a manufacturing method thereof are provided. The semiconductor structure includes a semiconductor substrate, an interconnection structure, a through substrate via, an insulating layer, a conductive pillar, a dummy conductive pillar, a passivation layer and a bonding pad. The interconnection structure is disposed over the semiconductor substrate. The through substrate via at least partially extends in the semiconductor substrate along a thickness direction of the semiconductor substrate, and electrically connects to the interconnection structure. The insulating layer is disposed over the interconnection structure. The conductive pillar is disposed in the insulating layer, and electrically connected to the through substrate via. The dummy conductive pillar is disposed in the insulating layer, and laterally separated from the conductive pillar. The passivation layer is disposed over the insulating layer. The bonding pad is disposed in the passivation layer, and electrically connected to the conductive pillar.

A semiconductor structure and a manufacturing method thereof are provided. The semiconductor structure includes a semiconductor substrate, an interconnection structure, through substrate vias, conductive pillars and dummy conductive pillars. The interconnection structure is disposed at a front side of the semiconductor substrate, and comprises a stack of dielectric layers and interconnection elements spreading in the stack of dielectric layers. The through substrate vias separately penetrate through the semiconductor substrate and the stack of dielectric layers. The conductive pillars are disposed at a front side of the interconnection structure facing away from the semiconductor substrate, and respectively in electrical connection with one of the through substrate vias. The dummy conductive pillars are disposed aside the conductive pillars at the front side of the interconnection structure.

A semiconductor structure and a manufacturing method thereof are provided. The semiconductor structure includes a semiconductor substrate, an interconnection structure, a through substrate via, an insulating layer, a conductive pillar, a dummy conductive pillar, a passivation layer and a bonding pad. The interconnection structure is disposed over the semiconductor substrate. The through substrate via at least partially extends in the semiconductor substrate along a thickness direction of the semiconductor substrate, and electrically connects to the interconnection structure. The insulating layer is disposed over the interconnection structure. The conductive pillar is disposed in the insulating layer, and electrically connected to the through substrate via. The dummy conductive pillar is disposed in the insulating layer, and laterally separated from the conductive pillar. The passivation layer is disposed over the insulating layer. The bonding pad is disposed in the passivation layer, and electrically connected to the conductive pillar.

Systems and methods are described for improved heat dissipation of the stacked semiconductor dies by including metallic thermal pads between the dies in the stack. In one embodiment, the thermal pads may be in direct contact with the semiconductor dies. Heat dissipation of the semiconductor die stack can be improved by a relatively high thermal conductivity of the thermal pads that directly contact the adjacent silicon dies in the stack without the intervening layers of the low thermal conductivity materials (e.g., passivation materials). In some embodiments, the manufacturing yield of the stack can be improved by having generally coplanar top surfaces of the thermal pads and under-bump metallization (UBM) structures.

A method includes depositing a first dielectric layer over a substrate; forming a first dummy metal layer over the first dielectric layer, wherein the first dummy metal layer has first and second portions laterally separated from each other; depositing a second dielectric layer over the first dummy metal layer; etching an opening having an upper portion in the second dielectric layer, a middle portion between the first and second portions of the first dummy metal layer, and a lower portion in the first dielectric layer, wherein a width of the lower portion of the opening is greater than a width of the middle portion of the opening, and a bottom of the opening is higher than a bottom of the first dielectric layer; and forming a dummy via in the opening and a second dummy metal layer over the dummy via and the second dielectric layer.

In an embodiment, a device includes: an integrated circuit die having a first side and a second side opposite the first side; a die stack on the first side of the integrated circuit die; a dummy semiconductor feature on the first side of the integrated circuit die, the dummy semiconductor feature laterally surrounding the die stack, the dummy semiconductor feature electrically isolated from the die stack and the integrated circuit die; a first adhesive disposed between the die stack and the dummy semiconductor feature; and a plurality of conductive connectors on the second side of the integrated circuit die.

In an embodiment, a device includes: an integrated circuit die having a first side and a second side opposite the first side; a die stack on the first side of the integrated circuit die; a dummy semiconductor feature on the first side of the integrated circuit die, the dummy semiconductor feature laterally surrounding the die stack, the dummy semiconductor feature electrically isolated from the die stack and the integrated circuit die; a first adhesive disposed between the die stack and the dummy semiconductor feature; and a plurality of conductive connectors on the second side of the integrated circuit die.