Abstract: Provided are a surface emitting laser device having an optical sensor, and an optical waveguide device employing the same. The surface emitting laser device having an optical sensor includes a surface emitting laser formed on a substrate and generating a laser beam to output it to outside, and an optical sensor formed adjacent to the surface emitting laser on the substrate and receiving external light. In the surface emitting laser device having the optical sensor, and the optical waveguide device employing the same, the surface emitting laser and the optical sensor are simultaneously integrated, however, the performance of the surface emitting laser is unaffected by the optical sensor and the optical sensor operates separately, exhibits high performance, and can respond within a wide wavelength band.

Abstract: Disclosed herein is a compressor in which a coil weight is wound plural times on a highly vibrational portion of a discharge pipe to increase the mass of the highly vibrational portion, thereby enabling a vibrating frequency of the discharge pipe to be adjusted to a desired value. With this configuration, there is no need to coil up the discharge pipe plural times differently from the prior art. Thereby, the compressor exhibits an effective interior space utility, minimized malfunction rate, and low manufacturing costs.

Abstract: A multifunctional notebook is provided. The multifunctional notebook includes a cover and at least one sheet of inner paper. The cover which is composed of a front cover and a back cover, and the at least one sheet of inner paper includes a plurality of recording sheets defined by folding the sheet of inner paper in accordion style so that adjacent folded edges of the inner paper face opposite directions and is fixed to a predetermined part of the inner surface of the cover. The multifunctional notebook can overcome limitations of a conventional folding notebook, organize data in a more visualized manner so that users can identify the data at a glance, and successfully meet users' demands by providing a variety of functions.

Abstract: Disclosed is a printing apparatus and method in a terminal device constituting a network system which can share a local printer installed in another terminal device. The printing method includes the steps of determining whether an installed printer can be used if a print command is inputted, searching for another terminal device connected to a usable printer among the terminal devices connected through the network if the printer is in an unusable state, transmitting print data to the searched terminal device, and printing the print data using the second printer installed in the other terminal device.

Abstract: Provided is a structure for manufacturing an optical module for fixing optical components needed in modularizing an optical device applied to an optical communication, and contrary to the conventional structure, it is to provide a structure for attaching the optical components that can attach the optical components, such as a coupling lens, a collimator, and a mirror, to the exact place in both directions, and that can locate the lens to the place where the light outputting from the optical device can be precisely adjusted based on light usage, thereby obtaining good optical characteristics.

Abstract: Disclosed is a polymer electrolyte membrane for a fuel cell, which restrains a crossover phenomenon of fuel and a decomposition of a polymer membrane over platinum, and shows outstanding power output and performance characteristics during operation of the fuel cell, and a method for producing the same. The method comprises the steps of blending a polymer matrix with a fluorinated ionomer of 3 to 50 wt % based on a weight of a polymer to produce a blended polymer solution; casting the blended polymer solution into a polymer membrane; and coating the fluorinated ionomer on both sides of the polymer membrane to produce a composite membrane.

Abstract: Provided is an optical transceiver for reducing crosstalk, comprising a light signal transmitter, a photoelectric transducer having a light transmitting device that converts the electrical signal into the light signal for transmission and a light receiving device that converts a received light signal into an electrical signal, and an electronic component that is located on a PCB connected to a leadframe or inside the optical transceiver module and amplifies, modulates, and demodulates the electrical signals in receiving and transmitting, whereby it is possible to implant the crosstalk level of less than ?90 dB capable of retaining the reception sensitivity to ?26 dBm in the optical transceiver, by forming the dummy ground lines on the substrate to reduce the crosstalk between the light transmitting device and the receiving device mounted on the silicon substrate.

Abstract: An air filter suitable for use on an engine is provided. The air filter includes a hollow filter body into which is positioned a filter installation unit capable of turning within the filter body and constructed to receive a filtering filter. A main air flow opening is formed in one side of the filter body, and a sub air flow opening is formed in another side of the filter body. A dust pick-up part is formed in the filter body having a dust outlet. A ventilator is provided to direct filtered air against an interior surface of a turning filtering filter, and foreign matter accumulated on an exterior surface of the filtering filter is dislodged into the dust pick-up part before being forcibly expelled through the dust outlet.

Abstract: Disclosed is a polymer electrolyte membrane for a fuel cell, which restrains a crossover phenomenon of fuel and a decomposition of a polymer membrane over platinum, and shows outstanding power output and performance characteristics during operation of the fuel cell, and a method for producing the same. The method comprises the steps of blending a polymer matrix with a fluorinated ionomer of 3 to 50 wt % based on a weight of a polymer to produce a blended polymer solution; casting the blended polymer solution into a polymer membrane; and coating the fluorinated ionomer on both sides of the polymer membrane to produce a composite membrane.

Abstract: An air filter suitable for use on an engine is provided. The air filter includes a hollow filter body into which is positioned a filter installation unit capable of turning within the filter body and constructed to receive a filtering filter. A main air flow opening is formed in one side of the filter body, and a sub air flow opening is formed in another side of the filter body. A dust pick-up part is formed in the filter body having a dust outlet. A ventilator is provided to direct filtered air against an interior surface of a turning filtering filter, and foreign matter accumulated on an exterior surface of the filtering filter is dislodged into the dust pick-up part before being forcibly expelled through the dust outlet.

Abstract: The present invention is directed to prevent color shift in liquid crystal display devices and to improve their aperture ratio and transmittance.

Abstract: A motor having a fluid bearing in which a clearance control unit is provided in a housing so as to stably rotate a rotor shaft of a rotor by controlling a clearance between the rotor shaft and a shaft groove. The clearance control unit includes a clearance control rod inserted into a through hole which passes through the shaft groove from an external side of the housing, and a feed gear for feeding the clearance control rod. One end of the feed gear is rotatably mounted into one end of a groove formed to be connected with the through hole, and the other end of the feed gear is formed to fit a feed screw exposed to the external side of the housing into a screw hole. The feed gear moves the clearance control rod closer to the rotor shaft, causing an increased air pressure between the clearance control rod and the rotor shaft for moving the rotor shaft into center alignment in the shaft groove.

Abstract: There is disclosed a method for fabricating a MOSFET, comprising the steps of: forming a gate oxide on a semiconductor substrate; depositing an intrinsic semiconductor layer on said gate oxide; forming a doped semiconductor layer on said intrinsic semiconductor layer; annealing said intrinsic semiconductor layer and said doped semiconductor layer, to diffuse impurities within said doped semiconductor layer into said intrinsic semiconductor layer; and patterning said intrinsic semiconductor layer and said doped semiconductor layer, to form a gate electrode, whereby the property degradation of gate oxide attributable to impurities, the increase in the thickness of gate oxide film attributable to infiltration of impurities and the degradation in operation of device can be prevented.

Abstract: A magnetooptical recording/reproducing apparatus for recording and/or reproducing information from a magnetooptical disk seated in a disk cartridge by using an optical pickup and a magnetic head. A cartridge holding member pivots for loading a disk cartridge on a deck, and an ejecting member ejects the disk cartridge received in the cartridge holding member. Also, the apparatus has a connecting member for transporting the magnetic head together with the optical pickup and a slide member for raising or lowering a recordable disk cartridge by recognizing the recordability of the disk cartridge.

Abstract: A magnetooptical recording/reproducing apparatus for recording and/or reproducing information from a magnetooptical disk seated in a disk cartridge by using an optical pickup and a magnetic head. A cartridge holding member pivots for loading a disk cartridge on a deck, and an ejecting member ejects the disk cartridge received in the cartridge holding member. Also, the apparatus has a connecting member for transporting the magnetic head together with the optical pickup and a slide member for raising or lowering a recordable disk cartridge by recognizing the recordability of the disk cartridge.

Abstract: A recording/reproducing apparatus for a magneto-optical disk includes an optical pickup a magnetic head, to record and reproduce information. The apparatus includes a connecting member for making the magnetic head move together with the optical pickup, and also open and close together with a door. The apparatus also includes a plate spring for pressing the magnetic head so that the magnetic head is elastically in contact with the magneto-optical disk. The apparatus can be slimmed in size because the magnetic head is opened and closed together with the door. Also, since the magnetic head is in contact with the magneto-optical disk, the distance therebetween does not vary.