Abstract:
A termination structure is provided for a power transistor. The termination structure includes a semiconductor substrate having an active region and a termination region. The substrate has a first type of conductivity. A termination trench is located in the termination region and extends from a boundary of the active region toward an edge of the semiconductor substrate. A doped region having a second type of conductivity is disposed in the substrate below the termination trench. A MOS gate is formed on a sidewall adjacent the boundary. The doped region extends from below a portion of the MOS gate spaced apart from the boundary toward the edge of the semiconductor substrate. A termination structure oxide layer is formed on the termination trench covering a portion of the MOS gate and extends toward the edge of the substrate. A first conductive layer is formed on a backside surface of the semiconductor substrate and a second conductive layer is formed atop the active region, an exposed portion of the MOS gate, and extends to cover a portion of the termination structure oxide layer.
Abstract:
The invention provides a traffic control system and method. In particular, the traffic control system and method according to the invention utilizes GPS, AGPS, GLONSS, Galileo global navigation satellite system, and so on to generate and transmit a preemption request signal for an emergency vehicle, such as ambulance, etc. At a designated traffic signal, the preemption request signal is received and filtered to get designated data associated with the designated traffic signal. Afterward, if the designated signal is judged to be valid, a state change request data is selectively generated according to the designated data, and the designated traffic signal is controlled based on the state change request data.
Abstract:
The configurations of an electro-optic Bragg deflector and the methods of using it as a laser Q-switch in a Q-switched laser and in a Q-switched wavelength-conversion laser are provided. As a first embodiment, the electro-optic Bragg deflector comprises an electrode-coated electro-optic material with one of a 1D and a 2D spatially modulated electro-optic coefficient. When a voltage is supplied to the electrodes, the electro-optic material behaves like a Bragg grating due to the electro-optically induced spatial modulation of the refractive index. The second embodiment relates to an actively Q-switched laser, wherein the electro-optic Bragg deflector functions as a laser Q-switch. The third embodiment of the present invention combines the Q-switched laser and a laser-wavelength converter to form a Q-switched wavelength-conversion laser, wherein the EO Bragg deflector can be monolithically integrated with a quasi-phase-matching wavelength converter in a fabrication process.
Abstract:
A method for reducing leakage current in a semiconductor structure is disclosed. One or more dielectric layers are formed on a semiconductor substrate, on which at least one device is constructed. A hydrogen-containing layer is formed over the dielectric layers. A silicon nitride passivation layer covers the dielectric layers and the hydrogen-containing layer. The hydrogen atoms of the hydrogen-containing layer are introduced into the dielectric layers without being blocked by the silicon nitride layer, thereby reducing leakage current therein.
Abstract:
The invention is directed to a method for applying a certificate suitable for a portable telephone belonging to a user, wherein the portable telephone comprises a telephone number. The method comprises steps of generating a user key pair in the portable telephone, wherein the key pair comprises a user public key information and then transmitting an applying packet from the portable telephone to a certificate authority through a switching center by using a short message service, wherein the applying packet comprises at least the user public key information. The user is verified according to the telephone number received by the certificate authority from the switching center. A certificate packet is generated by the certificate authority, wherein the certificate packet comprises at least a serial number and a certificate authority signature. The certificate packet is transmitted to the portable telephone according to the telephone number by using the short message service.
Abstract:
The invention discloses an event announcing system. The event announcing system comprises a portable electrical apparatus, a network, and a server. The portable electrical apparatus comprises an image capturing module, a positioning module, a time module, and a processing module. When the image capturing module captures an image information related to an event, the positioning module receives a positioning information and the time module receives a time information. The processing module is used for generating an announcing signal according to the image information, the positioning information, and the time information. When the server receives the announcing signal via the network, the server validates the announcing signal according to a validating rule and selectively generates an event report according to the announcing signal.
Abstract:
The computerized testing device with a network editing interface in accordance with the present invention allows a teacher to generate customized quizzes or teaching materials for students logging into the computerized testing device to take tests through a network. The computerized testing device comprises an examination managing module, a content database, a testing module and a recording module. The network editing interface allows teachers to generate quizzes or teaching materials, and comprises a quiz database, a template database, a teacher database and a network editing interface.
Abstract:
An electric door lock includes a rotatable member, a driving unit, and a manual operating member. The rotatable member is rotatable in first and second rotational directions and is provided with a first protrusion. The driving unit is coupled to the rotatable member, and operable so as to drive rotation of the rotatable member. The manual operating member is rotatable between locking and unlocking positions and is provided with a second protrusion. The first protrusion pushes the second protrusion to permit rotation of the manual operating member between the locking and unlocking positions when the rotatable member is driven by the driving unit to rotate in the first and second rotational directions, respectively. The second protrusion slides over the first protrusion when the manual operating member is driven to rotate between the locking and unlocking positions and when the driving unit is deactivated.
Abstract:
A blind device includes a flexible screen body with interconnected shielding sections, and a counterweight unit provided on a lowermost one of the shielding sections. The counterweight unit includes a horizontally extending top bar retained at a top edge of the lowermost shielding section, a horizontally extending bottom bar retained at a bottom edge of the lowermost shielding section, and at least one foldable component connected to the top and bottom bars and convertible from an unfolded state, where the lowermost shielding section is stretched by the counterweight unit in a vertical direction, to a folded state, where the counterweight unit folds the lowermost shielding section in the vertical direction.
Abstract:
A blind device includes a flexible screen body with interconnected shielding sections, and a counterweight unit provided on a lowermost one of the shielding sections. The counterweight unit includes vertically extending left and right side bars provided respectively at left and right edges of the lowermost shielding section, and a horizontally extending bottom bar retained at a bottom edge of the lowermost shielding section. The counterweight unit is convertible from a screen-stretching state, where the lowermost shielding section is stretched by the side bars, to a screen-foldable state, where folding of the lowermost shielding section in a vertical direction is permitted by the counterweight unit.