Abstract:
Provided is a method for preparing a compound semiconductor substrate. The method includes coating a plurality of spherical balls on a substrate, growing a compound semiconductor epitaxial layer on the substrate coated with the spherical balls while allowing voids to be formed under the spherical balls, and cooling the substrate on which the compound semiconductor epitaxial layer is grown so that the substrate and the compound semiconductor epitaxial layer are self-separated along the voids. The spherical ball treatment can reduce dislocation generations. In addition, because the substrate and the compound semiconductor epitaxial layer are separated through the self-separation, there is no need for laser lift-off process.
Abstract:
Provided is a method for automatically setting an area code by a femto access point (AP) located in a coverage area of a macro cell. The method includes receiving a broadcast signal of the macro cell, extracting an area code of the macro cell from the received broadcast signal, and setting the extracted area code as an area code of the femto cell. The femto AP sets the same area code as that of the macro cell as its area code and transmits the area code of the femto AP to the mobile station, thereby preventing the mobile station from repeating the location registration and enabling the mobile station to receive the same paging message from the femto AP and the macro cell.
Abstract:
The present invention relates to a wire grid polarizer capable of securing a high brightness and reducing the number of processes, a liquid crystal device including the wire grid polarizer, and a method of manufacturing the wire grid polarizer. According to the present invention, the wire grid polarizer, including first grids arranged in parallel at certain intervals over a substrate and second grids formed on the first grids, can be formed using only an imprint process, a deposition process, and a wet etch process. Accordingly, the number of processes and the process costs and time can be reduced, and high reliability can be guaranteed.
Abstract:
A method for detecting a storage voltage, a display apparatus using the storage voltage and a method for driving the display apparatus. The method for detecting the storage voltage includes applying a test voltage to a storage line in a display panel having an active layer disposed between the storage line and a data line while varying the test voltage, the active layer being in an active state or an inactive state according to the test voltage, and detecting the storage voltage corresponding to the test voltage in an inactive state of the active layer. Thus, the display panel is driven by using the detected storage voltage, so that an aperture ratio may be increased and current consumption may be decreased.
Abstract:
There is provided a guide plate for a side air bag. The guide plate includes a fastening member fastened to an inner surface of a vehicle body, a support member bent from a lower end of the fastening member and extending toward a passenger space of a vehicle, and a retaining member extending from a surface of the fastening member toward the passenger space of the vehicle. As the guide plate prevents a side air bag tube from being deployed in an upward direction, force for deploying the side air bag tube is not spread but concentrated to allow the side air bag tube to be properly deployed by opening a head liner.
Abstract:
The present invention relates to a composition containing a bean extract extracted by low-concentration, low-grade alcohol or fractions thereof. The composition exhibits excellent effects in improving blood circulation, improving obesity, and preventing diabetes, hyperlipidemia and the like, and exhibits the effects of alleviating or treating the symptoms of diabetes, hyperlipidemia, and the like. The present invention also relates to a method for improving blood circulation and vascular health.
Abstract:
An ink composition, and a method of forming a pattern, a color filter and a method of manufacturing the color filter using the same. The ink composition includes a binder resin, a multifunctional monomer having an ethylenic unsaturated double bond, a coloring agent, a polymerization initiator containing a certain positive ion and a solvent. Therefore, the composition has excellent coating property and chemical resistance and also an improved adhesion to a printing member, and thus the ink composition may be useful in forming a precise micropattern using a roll printing method, particularly a reversed printing method.
Abstract:
Provided is a polymer electrolyte membrane including an inorganic nanoparticle bonded with a proton-conducting group, a solid acid and a proton-conducting polymer. The inorganic nanoparticle bonded with the proton-conducting group may be obtained by reacting a compound including a proton-conducting group with a metal precursor. The polymer electrolyte membrane has significantly enhanced proton conductivity and reduced methanol crossover.
Abstract:
Provided are a signal restoring apparatus that can restore a reception signal of a counterpart terminal and increase frequency band efficiency by estimating its own transmission signal from a reception signal transmitted from a counterpart terminal through a satellite communication device and removing the estimated transmission signal, and a method thereof. The signal restoring apparatus according to the exemplary embodiment of the present invention includes: a transmitter transmitting a transmission signal to a satellite communication device; a band spread signal generator transmitting a band spread signal to the satellite communication device; a signal estimator estimating the transmission signal included in a reception signal transmitted from a counterpart terminal through the satellite communication device on the basis of the transmission signal and the band spread signal; and a signal remover removing the estimated transmission signal from the reception signal.
Abstract:
Provided are a dendrimer solid acid and a polymer electrolyte membrane using the same. The polymer electrolyte membrane includes a macromolecule of a dendrimer solid acid having ionically conductive terminal groups at the surface thereof and a minimum amount of ionically conductive terminal groups required for ionic conduction, thus suppressing swelling and allowing a uniform distribution of the dendrimer solid acid, thereby improving ionic conductivity. Since the number of ionically conductive terminal groups in the polymer electrolyte membrane is minimized and the polymer matrix in which swelling is suppressed is used, methanol crossover and difficulties of outflow due to a large volume may be reduced, and a macromolecule of the dendrimer solid acid having the ionically conductive terminal groups on the surface thereof is uniformly distributed. Accordingly, ionic conductivity is high and thus, the polymer electrolyte membrane shows good ionic conductivity even in non-humidified conditions.