Abstract:
An apparatus for laser processing a board is provided. The apparatus for laser processing a board includes a chip, a laser, a modulating device and a focus device. The chip receives a first frequency signal to generate a second frequency signal. The laser receives the first frequency signal to emit a first laser beam. The modulating device receives the second frequency signal and the first laser beam, and adjusts the first laser beam to emit a second laser beam. The focus device focuses the second laser beam to emit a third laser beam onto the board for forming plural dots on the board.
Abstract:
A method to drive a display with grid array pixels is comprised of writing image data containing a range of grayscale code into multiple pixels; at least a time of a pixel row being divided into frame time and black picture time; each code in the grayscale range being mapped to that in and adjusted range to drive the display without changing gamma voltage or with increased gamma voltage of the greatest grayscale code to present the luminance desired; pixel response time being shorter than frame time; and black picture data being written into the pixel row during the black picture time.
Abstract:
A shift-register circuit. The shift-register circuit has a plurality of shift-register units connected in series. Each of the shift-register units generates first and second pulse signals, wherein the first pulse signal is an output signal of the shift-register circuit and the second pulse signal is a trigger signal of a subsequent shift-register unit. A LCD panel driving circuit using the shift-register circuit is also disclosed.
Abstract:
A two-terminal fuse-antifuse structure comprises a horizontal B-fuse portion and a vertical A-fuse portion disposed between two metallization layers of an integrated circuit device. The two-terminal fuse-antifuse can be programmed with a relatively high current applied across the two terminals to blow the B-fuse, or with a high voltage applied across the two terminals to program the A-fuse. Such a device, connected between two circuit nodes, initially does not provide an electrical connection between the two circuit nodes. It may then be programmed with a relatively high voltage to blow the A-fuse, causing it to conduct between the two circuit nodes. Then, upon application of a relatively high current between the two circuit nodes, the B-fuse will blow, making the device permanently non-conductive. An improvement permitting higher current programming of B-fuses either alone or as part of Ab-fuse structures, incorporates an air gap which provides a pocket of space either above, below or both above and below the B-fuse portion of the device. This air gap provides a place for material disrupted (melted or vaporized) by a fuse or Ab-fuse programming event to go, eliminates direct contact between the dielectric material and the fuse-portion of the device, and also thermally isolates the melted fuse material from the dielectric, thus reducing the physical stress within the dielectric itself associated with high current programming and avoiding undesired collateral damage normally associated with high current programming events. The creation of an air gap around the fuse neck is accomplished by the removal of a sacrificial layer of an oxidizable polymer material in a gaseous and/or plasma state through a small hole in the dielectric referred to as a sacrificial via opening or just "sacrificial via". After removal of the oxidizable polymer material through the sacrificial via, the sacrificial via is sealed with a passivation layer formed of a polymeric material to prevent damage to the underlying structure. The integration of the air gap and sacrificial via sealing into the current fuse process manufacturing requires the following additional processing steps: (1) Air gap definition; (2) Air gap evacuation with oxygen plasma; (3) the application of the sealing polymer; and (4) the curing of the sealing polymer.
Abstract:
A type of piezoelectric transformer (PT) which vibrates in length extensional mode is provided. The piezoelectric transformer (PT) has a piezoelectric substrate which has a first dimension, a second dimension and a third dimension with the first dimension being longest and the third dimension being shortest. The substrate has two polarization directions parallel to the first dimension near two terminals of the first dimension and at least two opposite polarization directions on a central portion of the substrate transversely to the first dimension. The substrate further has at least two electrodes on a portion horizontal to the first dimension. Comparing with traditional piezoelectric transformers, the new one can solve the polarization difficulties and reduce audio noise output without sacrificing the electrical properties or even have better voltage transformation characteristics.
Abstract:
A piezoelectric composite receiver for use in telephones comprising a front cover, a rear cover, and a transducer plate, which is provided with an piezoelectric layer so as to provide the function of an electroacoustic transducer. Each of the front cover and the rear cover has an elliptically-shaped protrusion for clamping the transducer plate therebetween. The elliptically-shaped protrusions allows the transducer plate to freely vibrate in the frequency range of interest (i.e., between 300 Hz and 3,400 Hz), while the sound in the high frequency region (above 3,400 Hz) is effectively suppressed. The front cover and the rear cover are made of a plastic material using an injection molding process, and either the front cover or the rear cover, or both, are provided with an ultrasonic welding loop, which allows the receiver to be affixed using an ultrasound welding device. An induction coil can be imbedded in the outer periphery or an upper portion of the front cover which can be coupled to a hearing aid so as to allow an hearing impaired to utilize a telephone which utilizes the piezoelectric composite receiver.
Abstract:
The present invention relates to a driver system, comprising a counter unit, a buffer unit and a voltage regulation unit. The counter unit is adapted to sequentially activate one of the first output terminals upon receiving a driver signal and then output a control signal according to the driver signal. The buffer unit is adapted to output an isolated control signal upon receiving the control signal from the counter unit. Upon receiving the isolated control signal, the voltage regulation unit outputs a control voltage which corresponds to a given resistor provided therein. The control voltage is useful in driving an electronic device, and the operation of the electronic device may be further adjusted by changing the control voltage from one level to another.
Abstract:
A constant current LED lamp is provided with a linear driver circuit for driving multiple light emitting diodes (LEDs), or LED packages including multiple LED chips, connected in series. The driver circuit includes a rectifier circuit, a filter circuit, a stable voltage circuit, and a constant current circuit. The driver circuit allows the aggregate forward voltage drop of all the LEDs connected in series to approach the rectified input voltage to efficiently utilize the AC power from the mains.
Abstract:
The present invention discloses an improved LED structure and comprises: a LED chip; a wire; a packing mask; and a photocatalytic agent. The volume of an LED is smaller so as to be convenient for installation. Compared to a conventional LED with same power, the present invention increases the total contact surface area that contacts air, so that the functions of disinfection, deodorization, and mildewproofing can be effectively achieved.
Abstract:
A double-frame-rate method for reducing the time lapse of a LCD pixel between its two consecutive scans within a frame is provided. The method horizontally partitions the scan lines into (k) non-overlapping regions, each containing m1, m2, . . . , mk scan lines. The method then scans each of the regions twice before continuing to the next region and, as such, completes two passes of scanning of the entire frame. For a pixel in a region (j), the time lapse between the pixel's two consecutive scans during the frame's frame time is (mj/n) of the time lapse of conventional double-frame-rate methods.