Abstract:
A semiconductor device has an inductor and capacitor formed on the substrate. The inductor and capacitor are electrically connected in series. The inductor is a coiled conductive layer. The capacitor has first and second conductive layers separated by an insulating layer. A first test pad and second test pad are formed on the substrate. A terminal of the inductor is coupled to the first and second test pads. A third test pad and fourth test pad are formed on the substrate. A terminal of the capacitor is coupled to the third and fourth test pads such that the inductor and capacitor are connected in shunt between the first and second test pads and the third and fourth test pads. An electrical characteristic of the inductor and capacitor such that resonant frequency and quality factor are tested using a two-port shunt measurement which negates series resistance of test probes.
Abstract:
An integrated circuit solder bumping system provides a substrate and forms a redistribution layer on the substrate. An insulation layer is formed on the redistribution layer. The insulation layer has a plurality of openings therethrough. A first UBM layer of titanium is deposited on the insulation layer and in the openings therethrough. A second UBM layer of chromium/copper alloy is deposited on the first UBM layer. A third UBM layer of copper is deposited on the second UBM layer. UBM pads of at least two different sizes are formed from the UBM layers. Solder paste is printed over at least some of the UBM pads. The solder paste is reflowed to form at least smaller solder bumps on at least some of the UBM pads. Bigger solder bumps are formed on at least some of the UBM pads.
Abstract:
A semiconductor device is made by forming contact pads on a sacrificial carrier. The contact pads may be formed on a pillar. A semiconductor die is mounted to electrically connect to the contact pads with solder bumps or wire bonds. The semiconductor die is encapsulated with molding compound. The sacrificial carrier is removed. A backside interconnect structure has a first conductive layer formed over the molding compound to electrically connect to the contact pads. A first insulating layer is formed over the first conductive layer. A portion of the first insulating layer is removed to expose the first conductive layer. Solder material is deposited in electrical contact with the first conductive layer. The solder material is reflowed to form a solder bump. A wire bond electrically connects to a contact pad. A front-side interconnect structure can be formed through the molding compound to the contact pads.
Abstract:
A method of manufacturing a semiconductor device includes providing a substrate with an insulation layer disposed on a top surface of the substrate, forming a passive device over the top surface of the substrate, removing the substrate, depositing an insulating polymer film layer over the insulation layer, and depositing a metal layer over the insulating polymer film layer. A solder mask can be formed over the metal layer. A conformal metal layer can then be formed over the solder mask. A notch can be formed in the insulation layer to enhance the connection between the insulating polymer film layer and the insulation layer. Additional semiconductor die can be electrically connected to the passive device. The substrate is removed by removing a first amount of the substrate using a back grind process, and then removing a second amount of the substrate using a wet dry, dry etch, or chemical-mechanical planarization process.
Abstract:
A semiconductor device has integrated passive circuit elements. A first substrate is formed on a backside of the semiconductor device. The passive circuit element is formed over the insulating layer. The passive circuit element can be an inductor, capacitor, or resistor. A passivation layer is formed over the passive circuit element. A carrier is attached to the passivation layer. The first substrate is removed. A non-silicon substrate is formed over the insulating layer on the backside of the semiconductor device. The non-silicon substrate is made with glass, molding compound, epoxy, polymer, or polymer composite. An adhesive layer is formed between the non-silicon substrate and insulating layer. A via is formed between the insulating layer and first passivation layer. The carrier is removed. An under bump metallization is formed over the passivation layer in electrical contact with the passive circuit element. A solder bump is formed on the under bump metallization.
Abstract:
A circuit system comprising: forming a lower electrode over a substrate; forming a resistive film over the lower electrode; forming a multi-layered insulating stack over a portion of the resistive film; and forming an upper electrode over a portion of the multi-layered insulating stack.
Abstract:
A method for solder bumping provides a substrate and forms a film on the substrate. The film has openings therethrough. A stencil is aligned on the film. The stencil has openings therethrough over the openings through the film. Solder paste is printed onto the substrate and into the openings through the stencil and the openings through the film. The solder paste is reflowed to form solder balls therefrom. The stencil and the film are then removed.
Abstract:
A flip chip semiconductor device has a substrate with a plurality of active devices formed thereon. A contact pad is formed on the substrate in electrical contact with the plurality of active devices. A passivation layer is formed over the substrate and intermediate conduction layer. An adhesive layer is formed over the passivation layer. A barrier layer is formed over the adhesive layer. A wetting layer is formed over the barrier layer. The barrier layer and wetting layer in a first region are removed, while the barrier layer, wetting layer, and adhesive layer in a second region are maintained. The adhesive layer over the passivation layer in the first region are maintained until the solder bumps are formed. By keeping the adhesive layer over the passivation layer until after formation of the solder bumps, less cracking occurs in the passivation layer.
Abstract:
In a wafer level chip scale package, a wafer level interconnect structure is formed on a dummy substrate with temperatures in excess of 200° C. First semiconductor die are mounted on the wafer level interconnect structure. The wafer level interconnect structure provides a complete electrical interconnect between the semiconductor die and one or more of the solder bumps according to the function of the semiconductor device. A second semiconductor die can be mounted to the first semiconductor die. A first encapsulant is formed over the semiconductor die. A second encapsulant is formed over the first encapsulant. The dummy substrate is removed. A first UBM is formed in electrical contact with the first conductive layer. Solder bumps are made in electrical contact with the first UBM. A second UBM is formed to electrically connect the semiconductor die to the wafer level interconnect structure.
Abstract:
A semiconductor device is made by providing a temporary carrier for supporting the semiconductor device. An integrated passive device (IPD) is mounted to the temporary carrier using an adhesive. The IPD includes a capacitor and a resistor and has a plurality of through-silicon vias (TSVs). A discrete component is mounted to the temporary carrier using the adhesive. The discrete component includes a capacitor. The IPD and the discrete component are encapsulated using a molding compound. A first metal layer is formed over the molding compound. The first metal layer is connected to the TSVs of the IPD and forms an inductor. The temporary carrier and the adhesive are removed, and a second metal layer is formed over the IPD and the discrete component. The second metal layer interconnects the IPD and the discrete component and forms an inductor. An optional interconnect structure is formed over the second metal layer.