Abstract:
The embodiments described provide apparatus and methods for bonding wafers to carriers with the surface contours of plates facing the substrates or carriers are modified either by re-shaping, by using height adjusters, by adding shim(s), or by zoned temperature control. The modified surface contours of such plates compensate the effects that may cause the non-planarity of bonded substrates.
Abstract:
A method includes providing an interposer wafer including a substrate, and a plurality of through-substrate vias (TSVs) extending from a front surface of the substrate into the substrate. A plurality of dies is bonded onto a front surface of the interposer wafer. After the step of bonding the plurality of dies, a grinding is performed on a backside of the substrate to expose the plurality of TSVs. A plurality of metal bumps is formed on a backside of the interposer wafer and electrically coupled to the plurality of TSVs.
Abstract:
A method includes bonding a wafer on a carrier through an adhesive, and performing a thinning process on the wafer. After the step of performing the thinning process, a portion of the adhesive not covered by the wafer is removed, while the portion of the adhesive covered by the wafer is not removed.
Abstract:
In accordance with an embodiment, a structure comprises a substrate having a first area and a second area; a through substrate via (TSV) in the substrate penetrating the first area of the substrate; an isolation layer over the second area of the substrate, the isolation layer having a recess; and a conductive material in the recess of the isolation layer, the isolation layer being disposed between the conductive material and the substrate in the recess.
Abstract:
A method of forming an integrated circuit structure includes forming a first insulation region and a second insulation region in a semiconductor substrate and facing each other; and forming an epitaxial semiconductor region having a reversed T-shape. The epitaxial semiconductor region includes a horizontal plate including a bottom portion between and adjoining the first insulation region and the second insulation region, and a fin over and adjoining the horizontal plate. The bottom of the horizontal plate contacts the semiconductor substrate. The method further includes forming a gate dielectric on a top surface and at least top portions of sidewalls of the fin; and forming a gate electrode over the gate dielectric.
Abstract:
A high voltage gain power converter includes: a main switch element; an assistant switch element; a first inductive element, a first switch element, and a first capacitive element; and a second inductive element, a second switch element, and a second capacitive element. The first inductive element is connected between an input node and first switch element. The first capacitive element, connected between the first switch element and ground, provides a first boost output voltage. The second inductive element is connected between the main switch element and first capacitive element. The second switch element is connected to a common node of the second inductive element and main switch element. The second capacitive element, connecting the second switch element to a first node, provides a second boost output voltage. The assistant switch element is connected between the first inductive element and common node of the second inductive element and main switch element.
Abstract:
A semiconductor device and a method of manufacturing are provided. A dielectric layer is formed over a substrate, and a first silicon-containing layer, undoped, is formed over the dielectric layer. Atomic-layer doping is used to dope the undoped silicon-containing layer. A second silicon-containing layer is formed over first silicon-containing layer. The process may be expanded to include forming a PMOS and NMOS device on the same wafer. For example, the first silicon-containing layer may be thinned in the PMOS region prior to the atomic-layer doping. In the NMOS region, the doped portion of the first silicon-containing layer is removed such that the remaining portion of the first silicon-containing layer in the NMOS is undoped. Thereafter, another atomic-layer doping process may be used to dope the first silicon-containing layer in the NMOS region to a different conductivity type. A third silicon-containing layer may be formed doped to the respective conductivity type.
Abstract:
A semiconductor device includes a substrate formed of a first semiconductor material; two insulators on the substrate; and a semiconductor region having a portion between the two insulators and over the substrate. The semiconductor region has a bottom surface contacting the substrate and having sloped sidewalls. The semiconductor region is formed of a second semiconductor material different from the first semiconductor material.
Abstract:
A method of electrochemical deposition (ECD) provides a barrier and a seed layer on a substrate. The surfaces of the substrate are pre-treated before a metal layer is electrochemically deposited thereon in an electrochemical plating cell with a physical or a chemical surface treatment process. The electrochemical plating cell is covered by a cap to prevent evaporation of the electrolyte solution. The electrochemical plating cell includes a substrate holder assembly with a lift seal, e.g., with a contact angle θ less than 90° between the lift seal and the substrate. The substrate holder assembly includes a substrate chuck at the rear side of the substrate.