Abstract: The present invention discloses a photosensitive resin composition for black matrix, which shows high photosensitivity and forms a pattern with good smoothness of edge, high resolution, no undercut and free of peeling after development. The photosensitive resin composition comprises (A) an alkali-soluble resin, (B) a photopolymerizable monomer, (C) a photoinitiator having a general formula (c-1), (D) a solvent, and (E) a black pigment; wherein the alkali-soluble resin (A) comprises a functional group having a general formula (a-1); (Each R is independently H, linear or branch alkyl of C1-C5, phenyl, or halogen.) (Z1 is selected from the group consisting of Ra, Rb-S, Rc-O, wherein each of Ra, Rb, Rc is independently H, alkyl or aryl; Z2 is H, alkyl of C1-C4, or halide.

Abstract: A photosensitive resin composition for a black matrix comprises (A) an alkali-soluble resin; (B) a photopolymerizable monomer; (C) a photoinitiator; (D) a solvent; and (E) a black pigment; wherein the alkali-soluble resin (A) comprises a functional group having a general formula (a-1); viscosity of said photosensitive resin composition for the black matrix is 0.5-4.0 cps at 25° C.; the solid content of said photosensitive resin composition is 5-25 wt. %; and said solvent (D) has a saturated vapor pressure below 4.5 mm-Hg at 20° C.; which presents no pinhole on the surface after low pressure drying, no line and cloud defect on the film, good inner uniformity of the coated film and high photosensitivity after pre-bake, high heat resistance for black matrix after post-bake; which can be coated on the substrate, specifically the large-sized substrate, of liquid crystal display by the slit coating process. (Each of R is independently H, linear or branch alkyl of C1-C5, phenyl or halogen.

Abstract: A terminal voltage equalization circuit is used to equalize the terminal voltage of the series of connected battery strings so that each battery in the series of connected battery strings can be equally charged. When voltage of a certain battery in the battery string is higher than that of the other batteries, the battery voltage sensing and controlling circuit will output a high frequency signal to drive the switch devices to transit power from the high voltage batteries to the low voltage batteries by transformer. By the high switching switches, the charging currents through the batteries with high terminal voltages can be reduced, the charging currents through the batteries with low terminal voltages can be enhanced, and therefore the damages to the batteries due to overcharging can be avoided and speedy balance of the terminal voltages between each battery can be achieved.

Abstract: A recording apparatus includes a microphone for receiving sound waves and generating a corresponding audio signal, a signal module for providing corresponding sound data according to the audio signal, and an optical recording module for writing the data optically onto optical storage media. The optical recording module is only for writing the data optically into the optical storage media.

Abstract: A three dimensional adjustable high frequency inductor, its module and fabrication method of the same. The high frequency module includes micro high frequency inductors, filters, resistors, capacitors and associated with active components or power components to form a hybrid circuit, then it is packaged by using the technology of flip chip or wafer level packaging, so as to upgrade properties of high frequency modules and reduce the packaging and instrumentation costs by minimizing the modular size.

Abstract: A battery energy balance circuit and a battery charging bypass circuit is disclosed for batteries being charged at the same time to be charged equally. When the terminal voltages of the batteries are different, a controllable power device switch in the circuit switches on and off at a high frequency in order to reduce the input current to the batteries with higher terminal voltages and to increase the input current to the batteries with lower terminal voltages, achieving the goal of equal charging. The disclosed energy balance circuit can avoid damages to the batteries as a result of overcharging. When the number of batteries increases, one can expand the system in a modularized way to prevent inconvenience of circuit designs.

Abstract: A method and an apparatus are provided for bonding a coating to a web of cloth or foam without sacrificing the characteristics of the spandex mesh or foam. The coating and the cloth or foam are bonded and heated and then conveyed to an aspiration device for removing air between the coating and the cloth, thereby providing a thorough bonding therebetween.

Abstract: A digital receiver is enabled to process modulated signals at various data rates including a sampling circuit for receiving modulated signals and outputting digitalized sampled signals, a matched filter for expelling noise from digitalized sampled signals at a first data rate and at a second data rate and generating in-phase and quadrature-phase signals, a barker code correlator for depreading digitalized sampled signals at first data rate, a channel equalizer which counteracts co-channel interferences by using equalizer coefficients obtained from a plurality of noise whitening coefficients so as to generate a sequence of symbol decisions therefrom, a CCK correlator coupled to the channel equalizer for decoding signals at the second data rate and at a third data rate, a first quantization filter for recovering transmitted signals at the first data rate, and a second quantization fitler for recovering transmitted signals at the second data rate and at the third data rate.

Abstract: Disclosed herein is a method for inductor An Improved Structure For the Endpiece of Tape Rule of the high frequency integrated passive devices in which a spiral inductor pattern is formed on an insulation substrate, the spiral inductor pattern is spirally coiled outwards from the center. A thick film dielectric layer made of bisbenzocyclobutene (BCB) is formed on the spiral inductor pattern. A metal layer can be formed according to under bump metallization technique (UBM). The metal layer is either formed into a continuous spirally coiled form or a spread discrete configuration. With this structure, laser trimming can be applied to the metal layer pattern so as to acquire an ideal inductance value, thereby achieving wafer level trimming and compensating the process tolerance.

Abstract: A three dimensional adjustable high frequency inductor, its module and fabrication method of the same; the high frequency module comprises micro high frequency inductors, filters, resistors, capacitors and associated with active components or power components to form a hybrid circuit, then it is packaged by using the technology of flip chip or wafer level packaging, so as to upgrade properties of high frequency modules and reduce the packaging and instrumentation costs by minimizing the modular size.

Abstract: A power factor correction (PFC) circuit with a resonant snubber. The power factor correction (PFC) circuit has an input part (601) for receiving an AC voltage and outputting a first DC voltage; a main part (604) for converting the first DC voltage to a second DC voltage; and a snubber (500) for ensuring the main part operates in soft turn-on and soft turn-off. The main part (604) has a primary inductor and a primary diode connected in series, and a switch (606) connected to the connection node of the primary inductor and the primary diode. The snubber (500) has a cascaded device (a first diode and a resonant inductor connected in series) and a second diode connected in series, and a resonant capacitor connected between the connection node of the cascaded device and second diode, and the switch (606).

Abstract: A power factor correction (PFC) circuit with a snubber (500). The snubber of the PFC circuit uses a resonant capacitor (503) in conjunction with a resonant inductor (and two diodes) to make the voltage across the switch (606) increases slowly when the switch becomes turn-off from a turn-on state so as to reducing the switch loss. The snubber (500) of the PFC circuit at least comprises: a cascaded device which at least is composed of a first diode (501) and a resonant inductor (502), a second diode (504) connected in series with the cascaded device, and a resonant capacitor (503) connected to the anode of the second diode (504).

Abstract: A method and an apparatus are provided for bonding a coating to a web of cloth or foam without sacrificing the characteristics of the spandex mesh or foam. The coating and the cloth or foam are bonded and heated and then conveyed to an aspiration device for removing air between the coating and the cloth, thereby providing a thorough bonding therebetween.

Abstract: A micro-electro-mechanical high frequency switch and method for manufacturing the high frequency switch, comprising the steps of: providing a substrate; forming a metal transmission line and a driving electrode on the substrate; forming a dielectric layer on said metal transmission line and said driving electrode; forming a micro-electro-mechanical switch; forming driving electrodes on and beneath the micro-electro-mechanical switch; such that the driving voltage of high frequency switch is reduced, the insertion loss is lowered, the isolation is high, and the functions of high frequency switch is improved.

Abstract: An automatic erasing device is used for erasing chalk marks on a writing board, and includes an erasing mechanism having an elongate housing adapted to be disposed frontwardly of and slidable relative to the writing board between left and right end portions along a longitudinal axis. The elongate housing extends in a transverse axis relative to the longitudinal axis, and has a rear wall formed with an elongate rear opening to confront the writing board. Upper and lower axles are journalled in the elongate housing parallel to the longitudinal axis. A transmitting belt is trained on the upper and lower axles under tension for movement along a rear route proximate to and in alignment with the elongate rear opening, and along a front route parallel to the rear route distal to the elongate rear opening. Several eraser members are mounted detachably on the transmitting belt.