摘要:
An integration process where a first semiconductor protective layer and a second semiconductor protective layer are formed to protect the first and second semiconductor materials, respectfully, during processing to form an optical device, such as a photodetector, and a transistor on the same semiconductor. The first semiconductor protective layer protects the semiconductor substrate during formation of the second semiconductor layer, and the second semiconductor layer protects the second semiconductor material during subsequent processing of the first semiconductor. In one embodiment, the first semiconductor includes silicon and the second semiconductor material includes germanium.
摘要:
A semiconductor fabrication process includes patterning a first gate electrode layer overlying a gate dielectric. A second gate electrode layer is formed overlying the first gate electrode layer and the gate dielectric. Portions of the second gate electrode layer overlying the first gate electrode layer are removed until the first and second gate electrode layers have the same thickness. A third gate electrode layer may be formed overlying the first and second gate electrode layers. The first gate electrode layer may comprise TiN and reside primarily overlying PMOS regions while the second gate electrode layer may comprise TaC or TaSiN and primarily overlie NMOS regions. Removing portions of the second gate electrode layer may include performing a chemical mechanical process (CMP) without masking the second gate electrode layer or forming a resist mask and etching exposed portions of the second gate electrode layer.
摘要:
The present invention discloses a device and method of achieving a passive fit between a dental implant-supported metal bar or framework and dental implants located within a patient's mouth. The present invention comprises the steps of fabricating the dental implant-supported metal bar, contacting the metal bar and the plurality of dental implant analogs within a dental cast, and correcting the fit of the metal bar by inductively heating the dental implant-supported bar, thereby achieve the desired passive fit.
摘要:
The stop motion activator includes a solenoid coil with an elongate armature core supported for axial movement within the solenoid coil. The armature core is movable inwardly to a first axial position within the solenoid coil when the solenoid coil is energized and is manually movable outwardly to a second axial position when the solenoid coil is deenergized. A control switch is operatively associated with the movement of the armature core and is in a closed position to permit energization of the solenoid coil when the armature core is in the second axial position and is moved to an open position as soon as the armature core is moved inwardly to the first axial position to immediately deenergize the coil after the core has moved inwardly. The armature core is operatively connected to the stop mechanism of the knitting machine to immediately stop the operation of the knitting machine when a malfunction is detected.
摘要:
Method and apparatus for hacking green bricks for eventual introduction into a kiln; wherein bricks are placed on a spread table in parallel rows, and the spread table is actuated to space each of the rows of bricks from each other at distances greater than spacings that will be required when the bricks are being fired in a kiln. A brick gripping head having a plurality of elongated brick gripping members is positioned over the spread bricks on the spread table with the brick gripping members extending vertically in the spaces between the rows of bricks and horizontally along the opposite sides of the bricks. The spread table is then actuated to reduce the spacings between the bricks to predetermined final spacings required during firing of the bricks in the kiln. Simultaneously with such retraction of the spread table, the brick gripping members are also moved laterally towards each other to accommodate the decreased spacings between the bricks. In the preferred embodiment, the brick gripping members include air bags which are inflatable for gripping the sides of the brick and deflatable for releasing the brick. When the desired final spacing is achieved by retraction of the spread table, the air bags are inflated to grip the brick for delivery onto a brick stack on a kiln car or pallet which will be taken to the kiln. The next group of bricks to be spaced on the spread table are treated in the same manner, however, prior to stacking on the kiln car, they are rotated as a unit ninety degrees in a horizontal plane by rotating the brick gripping head so that when stacked, the rows of bricks extend at right angles to the rows of bricks previously stacked on the kiln car.
摘要:
A low-cost but highly accurate ohmmeter for measuring milliohm resistances is disclosed. The instrument employs a digital voltmeter (analog-to-digital converter) having an add-subtract mode which nulls any drift voltage following each measurement. A self biasing current source which eliminates common mode voltages to the high gain amplifier portion of the converter is used for resistance measurements.
摘要:
A semiconductor structure having a transistor region and an optical device region includes a transistor in a first semiconductor layer of the semiconductor structure, wherein the first semiconductor layer is over a first insulating layer, the first insulating layer is over a second semiconductor layer, and the second semiconductor layer is over a second insulating layer. A gate dielectric of the transistor is in physical contact with a top surface of the first semiconductor layer, and the transistor is formed in the transistor region of the semiconductor structure. A waveguide device in the optical device region and a third semiconductor layer over a portion of the second semiconductor layer.
摘要:
In one embodiment, an apparatus comprises: a base structure adapted to be inserted within the burr hole; a lead securing member for securing the lead, the lead securing member comprising a first arm structure and a second arm structure, at least one spring loaded structure adapted to exert a force to bring the first arm structure and the second arm structure together; and a positioning tool having a distal end adapted to be inserted within the lead securing member. When the positioning tool is positioned within the lead securing member, the distal end holds the first and second arm structures a sufficient distance apart to receive a lead between the first and second arm structures; wherein the positioning tool comprises a control structure at a proximal end that, when engaged, causes the distal end of the positioning tool to be released from between the first and second arm structures.
摘要:
A method for forming a conductive via is discussed and includes forming a seed layer over a first side of a semiconductor substrate, wherein the semiconductor substrate includes a first side opposite a second side, forming a via hole in a semiconductor substrate from the second side of the semiconductor substrate, wherein the via hole exposes the seed layer; and electroplating a conductive via material in the via hole from the seed layer. In one embodiment, a continuous conductive layer is formed over and electrically coupled to the seed layer. The continuous conductive layer can serve as the current source while electroplating the conductive via material.
摘要:
A read only memory implemented as a 3D integrated device has a first stratum, a second stratum, and bonded inter-strata connections for coupling the first stratum to the second stratum. The physical bonding between the two strata implements the programming of the read only memory. The stratum may be in wafer form or in die form. The first stratum includes functional active devices and at least one non-programmed active device. The second stratum includes at least conductive routing to be associated with the at least one non-programmed active device. The bonded inter-strata connections include at least one bonded programmable inter-strata connection for programming the at least one non-programmed active device and for providing conductive routing to the programmed active device. The two strata thus form a programmed ROM. Other types of programmable storage devices may be implemented by bonding the two strata.