Abstract:
A clean bench providing a working space for technicians, in a clean room, to remove and trap particles from the surface of an object with a high-pressure spray gun or a vacuum suction unit. This clean bench has an isolated disposal working space to avoid the escape of particles from it; moreover, it conducts and traps them by the design of a particle-conducting basin and a fan-filter unit (FFU) in it.
Abstract:
A CCFL power converter circuit is provided using a high-efficiency zero-voltage-switching technique that eliminates switching losses associated with the power MOSFETs. An optimal sweeping-frequency technique is used in the CCFL ignition by accounting for the parasitic capacitance in the resonant tank circuit. Additionally, the circuit is self-learning and is adapted to determine the optimum operating frequency for the circuit with a given load. An over-voltage protection circuit can also be provided to ensure that the circuit components are protected in the case of open-lamp condition.
Abstract:
A method for reducing random access memory (RAM) of an IC in display devices includes transforming a digital signal of a graphic data of three original colors (R, G, B) to digital signals of Y:Cb:Cr; taking one sample from two sample ratios of Y:Cb:Cr (4:2:0) or Y:Cb:Cr (4:2:2); storing in the RAM of a driving IC to reduce the RAM usage (with compressible data); then transforming the Y:Cb:Cr signals to three original colors (R, G, B) signal format to output image data, wherein Y represents brightness signal, and Cb and Cr represent color signals.
Abstract:
A controller for controlling at least two power circuits comprises a pulse generator and a selector. The pulse generator generates a first pulse signal which is coupled to a first power circuit of the at least two power circuits for initiating the operation of the first power circuit. The first power circuit then outputs a second pulse signal to a second power circuit of the at least two power circuits to initiate the operation of the second power circuit. The selector generates a reference signal which is coupled to each of the at least two power circuits for indicating a number of power circuits controlled. The controller is used to control energy supplying to an electrical circuit comprising multiple inverters and is more particularly to provide phase shifts to the electrical circuit. Usually, the electrical circuit is applied to display devices, such as liquid crystal display monitors, liquid crystal display computers and liquid crystal display televisions.
Abstract:
The invention disclosed in this patent document relates to transmembrane receptors, more particularly to a human G protein-coupled receptor for which the endogenous ligand is known (“known GPCRs”), and most particularly to mutated (non-endogenous) versions of the known GPCRs for use, most preferably in screening assays for the direct identification of candidate compounds as inverse agonists, agonists and partial agonists.
Abstract:
A CCFL power converter circuit is provided using a high-efficiency zero-voltage-switching technique that eliminates switching losses associated with the power MOSFETs. An optimal sweeping-frequency technique is used in the CCFL ignition by accounting for the parasitic capacitance in the resonant tank circuit. Additionally, the circuit is self-learning and is adapted to determine the optimum operating frequency for the circuit with a given load. An over-voltage protection circuit can also be provided to ensure that the circuit components are protected in the case of open-lamp condition.
Abstract:
A sequential burst mode regulation system to deliver power to a plurality of loads. In the exemplary embodiments, the system of the present invention generates a plurality of phased pulse width modulated signals from a single pulse width modulated signal, where each of the phased signals regulates power to a respective load. Exemplary circuitry includes a PWM signal generator, and a phase delay array that receives a PWM signal and generates a plurality of phased PWM signals which are used to regulate power to respective loads. A frequency selector circuit can be provided that sets the frequency of the PWM signal using a fixed or variable frequency reference signal.
Abstract:
A method for forming a self-aligned contact for a trench DMOS transistor comprises: providing a semiconductor substrate; etching a trench into the semiconductor substrate at a selected location on the surface of the semiconductor substrate; forming a first dielectric layer that covers the semiconductor substrate and walls of the trench; forming a plug in the trench, which comprises a step of depositing a semiconductor layer that covers the semiconductor substrate and fills in the trench, and a step of etching the semiconductor layer until the plug is below the trench for about 0.2 to 0.3 micron; forming a second dielectric layer on the plug; and forming a conductive layer over the second dielectric layer and the surface of the semiconductor substrate for ohmic contact regions.
Abstract:
The present invention discloses a method for depositing a coating layer on an article without edge bead formation by integrating the steps of an edge bead rinsing process with a coating spin-out process such that an edge portion of the wafer can be efficiently cleaned with a cleaning solvent when the coating material is still in its liquid state. While the present invention method can be applied to any coating materials and to any coated substrate, it is particularly suitable for cleaning a spin-on-glass material from a semiconductor wafer such that the wafer edge is not coated with a SOG material and thus particulate contamination caused by cracked SOG from the wafer edge can be avoided.
Abstract:
A new method of metal deposition with reduced metal residue after metal etching by cooling the wafer before metal deposition is described. A first patterned conducting layer is provided overlying a dielectric layer on the surface of a semiconductor substrate. The wafer is cooled to a temperature of less than about 20.degree. C. Thereafter, a metal layer is deposited overlying the first patterned conducting layer. The metal layer is etched away where it is not covered by a mask to complete formation of the metal line. Cooling of the wafer before metal deposition decreases the metal residue found after metal etching.