Abstract: Disclosed herein are a printed circuit board, including: a substrate having a patterned circuit layer on one surface thereof; and a resist pattern having a pattern corresponding to the circuit layer and covering the circuit layer so as to close the circuit layer, wherein a width of the resist pattern covering an upper portion of the circuit layer is the same as that of the resist pattern covering a lower portion of the circuit layer, and a method for manufacturing the same.

Abstract: Disclosed herein are a metal-polymer complex film for an inductor and a method for manufacturing an inductor, the inductor being manufactured by using the metal-polymer complex film for an inductor, including: a metal powder; and an amorphous epoxy resin, wherein the metal-polymer complex film is made in a film type by using a mixture where a weight ratio of the metal powder is 75˜98 wt %, so that a plurality of inductors can be simultaneously manufactured to thereby improve production efficiency and characteristic values of the inductor can be also improved.

Abstract: The present invention provides an electronic paper display apparatus, which comprises: plural pairs of rotating balls each pair having a first rotating ball and a second rotating ball of a size smaller than that of the first rotating ball; a partition wall member having a plurality of cavities each in which a respective rotating ball is positioned and configured to transversely separate the plurality of rotating balls from each other; an electrode structure formed on the partition wall member and configured to provide a drive voltage to each of the plurality of rotating balls; and a plurality of distance adjusting members disposed inside the plurality of cavities, with being faced the plurality of rotating balls.

Abstract: Disclosed herein is a chip inductor. The chip inductor according to the present invention includes a substrate on which a through-hole is formed, a conductive coil that is formed on the substrate, an upper resin composite magnetic layer that is filled to surround the conductive coil so that a core is formed on a center portion of the substrate, a lower resin composite magnetic layer that is formed on a bottom portion of the substrate, and an external electrode that is formed on both sides of the upper and lower resin composite magnetic layers.

Abstract: Disclosed are a gas-liquid separator, a hydrogen generating apparatus, and a fuel cell generation system, having the same. The gas-liquid separator can include an inflow path, into which a fluid material having a liquid and a gas flows; a centrifugal path, connected to the inflow path to receive the fluid material and formed spirally such that the fluid material is separated into the liquid and the gas by difference in centrifugal forces, an outer side of the centrifugal path having stronger affinity for the liquid than an inner side of the centrifugal path; and an outflow path, connected to the centrifugal path and discharging the liquid and the gas, which have been separated in the centrifugal path. With the present invention, it is possible to efficiently separate gas such as hydrogen and liquid such as a electrolyte solution without complex devices.

Abstract: A method of manufacturing a hydrogen generating apparatus, the method including: forming an absorbent layer, the absorbent layer configured to absorb an aqueous solution; depositing a metal membrane over either side of the absorbent layer such that the absorbent layer is interposed between the metal membranes; and forming a support layer over one side of one of the metal membranes, the support layer configured to transport hydrogen generated by a reaction between the aqueous solution and the metal membrane.

Abstract: A fuel cell is disclosed. The fuel cell can include a membrane electrode assembly (MEA), converting a chemical energy to an electrical energy; a first end plate, stacked on one surface of the MEA and formed with a first coupling hole; a second end plate, stacked on the other surface of the MEA; and a protrusion, formed on the second end plate such that the protrusion penetrates the first coupling hole and an end part of the protrusion protrudes a surface of the first end plate, and the end part being transformed such that the end part couples the first end plate and the second end plate. With the present invention, the fuel cell can reduce contact resistance between elements and its overall size and prevent a leak of fuel. In the manufacturing process, the end plates and the MEA can be arranged, improving reproducibility and repetition for mass production.

Abstract: A hydrogen generating apparatus can include an absorbent layer that absorbs an aqueous solution, a metal membrane deposited on either side of the absorbent layer such that the absorbent layer is interposed between the metal membranes, and a support layer formed on one side of one of the metal membranes that transports hydrogen generated by a reaction between the aqueous solution and the metal membrane. A batch type reaction may thus be implemented between the aqueous solution and the metal membranes, so that the reaction can be controlled to provide an even rate of hydrogen generation. Possible disturbances to the reaction resulting from by-products can be prevented, and since there is no additional equipment required, the volume and weight of the fuel cell power generation system can be reduced, and the extra power consumption by the additional equipment can be avoided.

Abstract: There is provided an electronic paper display device and a manufacturing method thereof. The electronic paper display device includes first and second electrodes facing each other with a predetermined gap therebetween; partitions dividing a space between the first and second electrodes into a plurality of cell spaces; first and second ridge portions formed on the first and second electrodes and allowing for a streamlined electric field in the cell spaces; and rotatable balls disposed in the respective cell spaces and having electrical and optical anisotropy. The electronic paper display device controls the linear movement of the rotatable ball through a streamlined electric field, and thus the stability of an image is achieved, and a superior contrast ratio is provided.

Abstract: Disclosed are an apparatus for generating hydrogen and a fuel cell power generation system that have the same. The apparatus in accordance with an embodiment of the present invention include: an electrolytic bath configured to contain electrolyte solution; an anode placed inside the electrolytic bath and configured to generate an electron; a cathode placed inside the electrolytic bath and configured to generate hydrogen by receiving the electron from the anode; a controller electrically connected to the anode and the cathode, and configured to control flow of electricity between the anode and the cathode; and a mechanical switch electrically connected to the controller in parallel and configured to flow electricity between the anode and the cathode in order to start the controller.

Abstract: A fuel cell power generation system is disclosed. The fuel cell power generation system in accordance with an embodiment of the present invention includes: a stack, which produces electrical energy by reacting hydrogen with oxygen and in which the hydrogen is supplied as fuel and the oxygen is in the air; a hydrogen tank, which supplies fuel comprising hydrogen to the stack; and a heat transfer tape, which transfers heat generated from the stack to the hydrogen tank. The fuel cell power generation system can improve the efficiency of supplying hydrogen by supplying waste heat generated from the stack to the hydrogen tank through the use of the heat transfer tape without a heat supplying device and be applied to a mobile device due to the reduced volume of the fuel cell power generation system.

Abstract: The present invention provides an electronic paper display apparatus, which comprises: plural pairs of rotating balls each pair having a first rotating ball and a second rotating ball of a size smaller than that of the first rotating ball; a partition wall member having a plurality of cavities each in which a respective rotating ball is positioned and configured to transversely separate the plurality of rotating balls from each other; an electrode structure formed on the partition wall member and configured to provide a drive voltage to each of the plurality of rotating balls; and a plurality of distance adjusting members disposed inside the plurality of cavities, with being faced the plurality of rotating balls.

Abstract: A fuel cell and a method of manufacturing the fuel cell are disclosed. A method of manufacturing a fuel cell by electrically connecting a first cell and a second cell that are coupled over both sides of a membrane with a predetermined gap between the first cell and the second cell, where the first cell and the second cell each has an anode on one side and a cathode on the other side, may include perforating a hole in the membrane between the first cell and the second cell, and electrically connecting the anode of the first cell with the cathode of the second cell through the hole using a conductive member. This method does not entail unnecessary increases in volume or complicated flow paths, and the method can reduce electrical resistance while simplifying the peripheral equipment.

Abstract: A hydrogen generating apparatus is disclosed, which can provide a constant amount of hydrogen regardless of its orientation. The hydrogen generating apparatus can include an electrolyte bath, which contains an electrolyte solution; a free-moving first electrode, which is positioned inside the electrolyte bath, and which generates electrons; a free-moving second electrode, which is positioned inside the electrolyte bath, and which receives the electrons to generate hydrogen; a spacer positioned between the first electrode and the second electrode; and a control unit, which is connected with the first electrode and the second electrode, to control an amount of electrons traveling from the first electrode to the second electrode.

Abstract: The present invention provides an electronic paper display device including: a base substrate; rotating balls positioned on the base substrate and consisting of hemispheres of different colors; and a barrier structure for separating the rotating balls on the base substrate and having cavities in which the rotating balls are positioned and an oil supply passage connected to the cavities to supply oil to the cavities.

Abstract: The electronic paper display device may include a first electrode; a dielectric layer that is disposed on the first electrode and has a plurality of cells defined by a barrier; a second electrode that faces the dielectric layer; and electronic balls that are disposed in the inside of the respective cells to display an image according to the electric fields applied to the first and second electrodes wherein a side of the barrier is formed in a recessed round shape.

Abstract: There is provided an electronic paper display device and a manufacturing method thereof. The electronic paper display device includes a thin film transistor; a first substrate formed on the thin film transistor and having therein a plurality of pixel electrodes connected to the thin film transistor; a second substrate disposed to face the first substrate and having a common electrode thereon; a plurality of partitions disposed between the first and second substrates to provide a cell space to each of the pixel electrodes; and a display unit disposed in the cell space. The electronic paper display device is superior in the stability and uniformity of an image.

Abstract: There is provided an electronic paper display device. The electronic paper display device includes a substrate including a plurality of cells formed by a plurality of barrier ribs; an upper electrode and a lower electrode respectively formed on an upper surface and a lower surface of the substrate; and an electronic paper display element mounted in each of the cells and having optical and electrical anisotropy. Here, torque applied to the electronic paper display element is controlled to express grayscale.

Abstract: A fuel cell is disclosed. The fuel cell in accordance with an embodiment of the present invention includes: a membrane-electrode assembly, which has an electrolyte membrane, an anode being formed on one surface of the electrolyte membrane and a cathode being formed on the other surface of the electrolyte membrane; and an auxiliary electric power supply having a flow path formed on the surface thereof and being laminated on the membrane-electrode assembly such that the flow path faces the membrane-electrode assembly.

Abstract: Through holes for flow paths of the fuel cell are formed in a thermoplastic polymer film by a process selected from a group consisting of laser drilling, etching and lithography, an inner side surface of the thermoplastic polymer film is coated with a metal layer, and the through holes are filled with a fuel diffusion material and a catalyst to provide an anode. The procedure is repeated to provide a cathode. Then, the anode and the cathode are placed to oppose each other. A cation conducting polymer membrane is disposed, between the anode and the cathode, and the anode, the cation conducting polymer membrane and the cathode are hot-pressed.