An integrated circuit (IC) that includes a circuit substrate having a front side surface and an opposite back side surface. Active circuitry is located on the front side surface. An inductive structure is located within a deep trench formed in the circuit substrate below the backside surface. The inductive structure is coupled to the active circuitry.

A semiconductor device includes a leadframe that includes contact pins and a semiconductor die that has protruding connection formations. A flexible support member is disposed between the leadframe and the semiconductor die and supports the semiconductor die. The flexible support member has electrically conductive lines that extend between the leadframe and the semiconductor die. The electrically conductive lines of the flexible support member are electrically coupled with the contact pins of the leadframe and with the connection formations of the semiconductor die.

A first insulating film is applied onto a joining face of a semiconductor device including a connection terminal on a joining face, and the connection terminal is embedded inside the first insulating film. The second insulating film is formed on a joining target face of a joining target, which includes a connection target terminal on the joining target face, and the connection target terminal is embedded inside the second insulating film. The semiconductor device and the joining target are joined together by applying pressure and causing the semiconductor device and the joining target to make contact with each other.

A first insulating film is applied onto a joining face of a semiconductor device including a connection terminal on a joining face, and the connection terminal is embedded inside the first insulating film. The second insulating film is formed on a joining target face of a joining target, which includes a connection target terminal on the joining target face, and the connection target terminal is embedded inside the second insulating film. The semiconductor device and the joining target are joined together by applying pressure and causing the semiconductor device and the joining target to make contact with each other.

An integrated circuit device may include a multi-material toothed bond pad including (a) an array of vertically-extending teeth formed from a first material, e.g., aluminum, and (b) a fill material, e.g., silver, at least partially filling voids between the array of teeth. The teeth may be formed by depositing and etching aluminum or other suitable material, and the fill material may be deposited over the array of teeth and extending down into the voids between the teeth, and etched to expose top surfaces of the teeth. The array of teeth may collectively define an abrasive structure. The multi-material toothed bond pad may be bonded to another bond pad, e.g., using an ultrasonic or thermosonic bonding process, during which the abrasive teeth may abrade, break, or remove unwanted native oxide layers formed on the respective bond pad surfaces, to thereby create a direct and/or eutectic bonding between the bond pads.

An integrated circuit device may include a multi-material toothed bond pad including (a) an array of vertically-extending teeth formed from a first material, e.g., aluminum, and (b) a fill material, e.g., silver, at least partially filling voids between the array of teeth. The teeth may be formed by depositing and etching aluminum or other suitable material, and the fill material may be deposited over the array of teeth and extending down into the voids between the teeth, and etched to expose top surfaces of the teeth. The array of teeth may collectively define an abrasive structure. The multi-material toothed bond pad may be bonded to another bond pad, e.g., using an ultrasonic or thermosonic bonding process, during which the abrasive teeth may abrade, break, or remove unwanted native oxide layers formed on the respective bond pad surfaces, to thereby create a direct and/or eutectic bonding between the bond pads.

A thermally enhanced semiconductor assembly with three dimensional integration includes a semiconductor chip electrically coupled to a wiring board by bonding wires. A heat spreader that provides an enhanced thermal characteristic for the semiconductor chip is disposed in a through opening of a wiring structure. Another wiring structure disposed on the heat spreader not only provides mechanical support, but also allows heat spreading and electrical grounding for the heat spreader by metallized vias. The bonding wires provide electrical connections between the semiconductor chip and the wiring board for interconnecting the semiconductor chip to terminal pads provided in the wiring board.

A packaged electronic die having a micro-cavity and a method for forming a packaged electronic die. The packaged electronic die includes a photoresist frame secured to the electronic die and extending completely around the device. The photoresist frame is further secured to a first major surface of a substrate so as to form an enclosure around the device. Encapsulant material extends over the electronic die and around the sides of the electronic die. The encapsulant material is in contact with the first major surface of the substrate around the entire periphery of the electronic die so as to form a seal around the electronic die.

Methods of fabricating a microelectronic device comprising forming a microelectronic substrate having a plurality microelectronic device attachment bond pads and at least one interconnection bond pad formed in and/or on an active surface thereof, attaching a microelectronic device to the plurality of microelectronic device attachment bond pads, forming a mold chase having a mold body and at least one projection extending from the mold body, wherein the at least one projection includes at least one sidewall and a contact surface, contacting the mold chase projection contact surface to a respective microelectronic substrate interconnection bond pad, disposing a mold material between the microelectronic substrate and the mold chase, and removing the mold chase to form at least one interconnection via extending from a top surface of the mold material to a respective microelectronic substrate interconnection bond pad.

Methods of fabricating a microelectronic device comprising forming a microelectronic substrate having a plurality microelectronic device attachment bond pads and at least one interconnection bond pad formed in and/or on an active surface thereof, attaching a microelectronic device to the plurality of microelectronic device attachment bond pads, forming a mold chase having a mold body and at least one projection extending from the mold body, wherein the at least one projection includes at least one sidewall and a contact surface, contacting the mold chase projection contact surface to a respective microelectronic substrate interconnection bond pad, disposing a mold material between the microelectronic substrate and the mold chase, and removing the mold chase to form at least one interconnection via extending from a top surface of the mold material to a respective microelectronic substrate interconnection bond pad.