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: The present invention provides an electronic paper display device including: a first electrode; a second electrode facing the first electrode; a barrier layer interposed between the first and second electrodes to define a plurality of cells; and a microcapsule disposed in each cell between the first and second electrodes and maintaining a ratio of minor axis to major axis of 0.9 to 1, and a manufacturing method of the same.

Abstract: The present invention provides an electronic paper display device including: a first electrode; a second electrode facing the first electrode; a barrier layer interposed between the first and second electrodes to define a plurality of cells; and a microcapsule disposed in each cell between the first and second electrodes and maintaining a ratio of minor axis to major axis of 0.9 to 1, and a manufacturing method of the same.

Abstract: An electronic paper display device includes: a display-side electrode disposed at a display side and formed of a transparent material; a back electrode disposed to face the display-side electrode; a substrate provided as a single layer disposed between the display-side electrode and the back electrode and including a plurality of first and second micro cups which are arranged in a two-dimensionally close-packed manner such that one micro cup is surrounded by different adjacent micro cups; and a plurality of first and second optical anisotropic elements disposed in the first and second micro cups, respectively, and having an optical characteristic changing in response to an electromagnetic change and a different driving voltage to change the optical characteristic.

Abstract: An electronic paper display device and a manufacturing method thereof, where 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 rib in a round shape; 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.

Abstract: The present invention relates to a manufacturing method of an electronic paper display device and an electronic paper display device manufactured therefrom. The manufacturing method of the electronic paper display device may include forming a first auxiliary first dielectric layer on a first substrate; disposing electronic balls on the first auxiliary first dielectric layer; forming a second auxiliary first dielectric layer that fixes the electronic balls by curing the first auxiliary first dielectric layer; forming an auxiliary second dielectric layer on the second auxiliary first dielectric layer including the electronic balls; forming first and second dielectric layers by curing the second auxiliary first dielectric layer and the auxiliary second dielectric layer; and bonding the first substrate including the second dielectric layer to a second substrate.

Abstract: The present invention relates to an electronic paper display device and a method of driving the same. The electronic paper display device may include: an electronic paper panel that displays an image; and a vibration member that generates vibration of the electronic paper panel.

Abstract: The present invention relates to a paper display device and a manufacturing method thereof. The electronic paper display device includes: a first electrode; a first partition wall which is disposed on the first electrode, and defines a number of cell regions; a second partition wall which faces the first partition wall, and defines the cell regions together with the first partition wall; a substrate including a second electrode, wherein the second electrode is disposed on the second partition wall, and faces the first electrode; dielectric fluid filled in at least each of the cell regions; and twist balls individually floating within the dielectric fluid of each of the cell regions.

Abstract: Disclosed are a housing, an apparatus for generating hydrogen and a fuel cell power generation system having the same. The housing in accordance with an embodiment of the present invention includes a case, a hollow space formed in the case, a cartridge being inserted in the hollow space, the cartridge configured to generate hydrogen; and a moisture removing layer, being formed on a wall of the hollow space and including chemical hydride. The housing is capable of removing both water vapor, included in the hydrogen generated by the apparatus for generating hydrogen, and dew, condensed in the housing, and obtaining additional hydrogen by hydrolyzing the water vapor and the condensed dew.

Abstract: A method of manufacturing a build-up printed circuit board, in which the circuit of a build-up printed circuit board including a core layer and an outer layer is realized by forming the metal seed layer of the core layer using a dry process, consisting of ion beam surface treatment and vacuum deposition, instead of a conventional wet process, including a wet surface roughening process and electroless plating. When the wet process is replaced with the dry process in the method of the invention, the circuit layer can be formed in an environmentally friendly manner, and as well, all circuit layers of the substrate including the core layer and the outer layer can be manufactured through a semi-additive process. Further, the peel strength between the resin substrate and the metal layer can be increased, thus realizing a highly reliable fine circuit.

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: A current collector and a fuel cell stack are disclosed. The current collector in accordance with an embodiment of the present invention includes: a substrate; a double-side adhesive layer, which is formed on one surface of the substrate; a collecting pattern, which is formed on the other surface of the substrate; and a conductive adhesive layer, which is formed on the collecting pattern. While using the current collector described above, electrical resistance in a fuel cell can be reduced, thus improving the performance of the fuel cell. Moreover, even if the thickness of an endplate is thin, clamping pressure required in the fuel cell can be provided.

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: Disclosed is a fuel cell system. The fuel cell system in accordance with an embodiment of the present invention includes a membrane electrode assembly including a fuel electrode, an air electrode, and an electrolyte layer interposed between the fuel electrode and the air electrode; a separator including a channel that is adjacent to the fuel electrode and is provided for supplying hydrogen to the fuel electrode; a hydrogen supply device supplying hydrogen to the channel; and a relief valve formed on the channel and controlling pressure of the channel.

Abstract: A stack and a fuel cell power generation system equipped with the stack are disclosed. In accordance with an embodiment of the present invention, the stack, which generates electrical energy by reacting hydrogen with oxygen and in which the hydrogen is supplied as a fuel and the oxygen is in the air, includes: a membrane electrode assembly (MEA), which includes an electrolyte membrane and a pair of electrodes coupled to either surface of the electrolyte membrane; and a pair of current collectors, which is formed on either surface of the membrane electrode assembly, in which the current collector includes: an insulating polymer film; and a conductive adhesive layer, which is interposed between the insulating polymer film and the membrane electrode assembly.

Abstract: An electric power supply apparatus and a portable electronic device equipped with the electric power supply apparatus are disclosed. The electric power supply apparatus can include: a replaceable cartridge that supplies hydrogen or electrical power; a housing that forms a cavity, in which the cartridge may be inserted; a stack connected with the cartridge and configured, if the cartridge is supplying hydrogen, to receive the hydrogen from the cartridge and generate electrical power; and a circuit unit electrically connected with the cartridge and the stack that determines the type of the cartridge and supplies electrical power to the electronic device. With certain embodiments of the invention, a device can be recharged using replaceable cartridges. Also, various types of cartridges can be used in a single system, allowing a higher level of compatibility.

Abstract: A current collector, a method of manufacturing the current collector, a fuel cell stack, and a fuel cell power generation system are disclosed. The current collector for collecting an electric current generated in a fuel cell can include: a substrate; a collector pattern, which contains a conductive material, formed on one side of the substrate; and a corrosion-resistant metal layer, which is coated over all of the surfaces of the collector pattern, including the surface facing the substrate. This current collector can be utilized to prevent corrosion during the operation of the fuel cell, as well as to increase the life span of the fuel cell, without forming the entire configuration with an expensive corrosion-resistant metal.

Abstract: Disclosed are a housing, an apparatus for generating hydrogen and a fuel cell power generation system having the same. The housing in accordance with an embodiment of the present invention includes a case, a hollow space formed in the case, a cartridge being inserted in the hollow space, the cartridge configured to generate hydrogen; and a moisture removing layer, being formed on a wall of the hollow space and including chemical hydride. The housing is capable of removing both water vapor, included in the hydrogen generated by the apparatus for generating hydrogen, and dew, condensed in the housing, and obtaining additional hydrogen by hydrolyzing the water vapor and the condensed dew.

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: 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.