Industrial Technology Research Institute

Vastview Technology Inc.

Aptix Corporation

Yu-Lin Lee

Yuh-Ren Shen

Chang-Cheng Lin

Syh-Yuh Cheng

Ralph G Whitten

Chang-Ho Liou

Chun-Mai Liu

Jan-Ruei Lin

Yun-Tien Chen

Alan Elbert Comer

Shu-Fen Liao

Wen-Chin Yeh

Chang-Cheng Li

Scott Graham

Michael David La Fleur

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.

Drive method for display of grid array pixels

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 m, m, . . . , mscan 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 (m/n) of the time lapse of conventional double-frame-rate methods.

Method for reducing time lapse of consecutive scan of LCD pixel

The method increases the output frame rate to p/q (p, q are both natural numbers and p&#x3e;q) times of the input frame rate. In a period of time equal to the least common multiple of the input and output frame times, q input frames are output and (p&#x2212;q) transient frames are generated and inserted at appropriate places before or after the q input frames in the output frame sequence so as to enhance the dynamic display effect of the display device.

Method for enhancing response speed of hold-typed display device

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.

Shift-register circuit

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.

Integrated two-terminal fuse-antifuse and fuse and integrated

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.

Multi-mode adjustable piezoelectric transformer

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.

Growing community of inventors

Taipei, Taiwan

Yu-Lin Lee