Abstract: The present invention relates to a new binaphthalene derivative, a preparation method thereof, and an organic electronic device using the same. The binaphthalene derivative according to the present invention can perform functions of hole injection and transportation, electron injection and transportation, or light emission in an organic electronic device including an organic light-emitting device, and the device according to the present invention has excellent characteristics in terms of efficiency, drive voltage and stability, and in particular excellent effects such as a low voltage and a long life time.

Abstract: Disclosed herein is a liquid zoom lens. The liquid zoom lens comprises a cylindrical body including glass lenses respectively coupled at upper and lower openings to the body, an auto-focus lens part including a first liquid insulating layer and a first electrolyte layer stacked at a lower portion of the body to form an interface therebetween, and an optical zoom lens part including a second liquid insulating layer and a second electrolyte layer stacked on the first electrolyte layer to form an interface therebetween and a lens positioned in the second liquid insulating layer and fixed to the body with an outer peripheral surface of the lens closely contacting an inner peripheral surface of the body. The liquid zoom lens enables an auto-focus function and an optical zoom function to be performed simultaneously by means of a single liquid lens having a variable curvature.

Abstract: A liquid zoom lens mounted on a portable terminal is provided. In the liquid zoom lens, a cylindrical body has upper and lower openings to which one pair of lenses is coupled. An auto-focus lens part includes a first insulating liquid layer, a first electrolyte layer, and a first lens. The first insulating layer and the first electrolyte layer are disposed to form an interface at a lower portion of the body. The first lens is disposed on the first electrolyte layer and has a periphery closely attached to a lower portion of an inner periphery of the body. An optical zoom lens part includes a second insulating liquid layer, a second electrolyte layer, and a second lens. The second insulating liquid layer and the second electrolyte layer are disposed to form an interface on the first lens. The second lens is fixed to be movable within the second insulating liquid layer, such that a periphery is closely attached to the inner periphery of the body.

Abstract: Disclosed herein is an electrowetting system based on the electrowetting phenomenon. The electrowetting system comprises an electrolyte solution and optionally an insulating solution wherein the electrolyte solution includes a first salt having a molar mass of 100 or below and a solubility of 27 g or above in 100 g of water, a second salt (a chaotropic salt) containing an ion with a negative Jones-Dole coefficient (B), a third salt containing an ion with a Setschenow constant (ks) of 0.150 or above, and the salts are in the range of 10 to 30% by weight with respect to the total weight of the electrolyte solution. A mixture of the salts having different inherent characteristics is used as the electrolyte solution of the electrowetting system.

Abstract: The present invention provides an indene derivatives having a new structure and an organic light-emitting diode using the same. The organic light-emitting diode according to the present invention shows improved effects in efficiency, driving voltage and stability.

Abstract: The present invention provides an organic electronic device using the compound of the formula (1) and a pyrene derivative having a new structure.

Abstract: A character input method for a portable device including a display screen and the portable device are provided. The character input method for a portable device includes a step of locating a pointer at a predetermined pointer start area on the display screen; a step of sensing the movement of an object which moves being in contact with an optical interface unit of the portable device; a step of inputting a character by moving the pointer from the pointer start area according to the sensed movement; and a step of returning the pointer to the pointer start area according to the input of the character.

Abstract: There are provided an optical pointing device and a personal portable device employing the same, the optical pointing device in which a horizontal optical path is formed, thereby minimizing the thickness of an optical system and providing a sufficient depth of a focus. The optical pointing device includes a cover glass directly contacting an object, a light source unit emitting light to the cover glass, and a light receiving unit reflecting the light reflected by the object in a predetermined direction via the cover glass and condensing the light in the predetermined direction, and picking up an image of the light. According to the present invention, pointing is possible by using the surface of a finger and a horizontal optical path is formed such that the thickness of an optical system is minimized, and a sufficient depth of a focus is provided, thereby keeping a beautiful exterior of an ultra slim personal portable device and performing convenient pointing.

Abstract: Disclosed herein is an electrowetting system using the electrowetting phenomenon. The electrowetting system comprises an electrolyte solution consisting of 30 to 89% by weight of water, 0.01 to 30% by weight of a salt and 10 to 60% by weight of a polar solvent having a dipole moment. According to the electrowetting system, the polar solvent added to increase the viscosity of the electrolyte solution stabilizes the movement of the electrolyte solution when a voltage is applied to operate the electrowetting system. In addition, high- or low-temperature reliability of the electrowetting system can be ensured by the use of the polar solvent.

Abstract: Disclosed herein are a liquid for a liquid lens and a liquid lens module. The liquid for a liquid lens comprises an electrolyte solution and an insulating solution wherein the electrolyte solution contains H2O, 1,2-propanediol and LiCl, and the insulating solution is a silicon (Si) oil and optionally contains 1,6-dibromohexane or bromobenzene as an organic additive. The liquid lens module comprises a transparent cover, a case for accommodating an electrolyte solution and an insulating solution, a pair of electrodes for supplying electricity to the electrolyte solution, and an insulating film for covering one of the electrodes in contact with the electrolyte solution wherein the electrolyte solution contains H2O, 1,2-propanediol and LiCl, and the insulating solution is a silicon (Si) oil. The electrolyte solution and the insulating solution used in the liquid for a liquid lens satisfy the requirements for liquid lenses.

Abstract: The present invention relates to an organic thin film transistor which includes an organic layer comprising an organic compound facilitating the ohmic contact between a semi-conducting layer and electrodes and serving as the semi-conducting layer. The organic thin film transistor according to the present invention has excellent electric contact between the semiconductor layer and the source electrode/drain electrode, and thus can be widely used as components for electric/electronic devices. As a result, as the materials for the source electrode or the drain electrode in the organic thin film transistor, materials which are less expensive and excellent in processibility though they have a low work function as the materials can be used.

Abstract: The present invention relates to a new imidazole derivative, a method for preparing the derivative, and an organic electronic device using the derivative. The imidazole derivative according to the invention can perform functions of hole injection, hole transportation, electron injection, electron transportation, and/or light emission in an organic electronic device including an organic light-emitting device. The organic electronic device according to the invention exhibits excellent characteristics in terms of efficiency, drive voltage and stability.

Abstract: Disclosed herein are novel imidazole derivatives and organic electronic device using the same. The disclosed organic electronic device show excellent characteristics in terms of efficiency, driving voltage and stability.

Abstract: The present invention relates to a variable focus lens. The variable focus lens comprises a fluid chamber having a protrusion formed along one opened end thereof. The fluid chamber is cylindrically shaped to house first and second non-miscible fluids therein, and the first and second fluids have different refractive indices. A transparent element hermetically is coupled with the opened end of the chamber with a predetermined gap from the protrusion of the chamber. A first electrode is disposed inside the chamber to act on the first fluid, and a second electrode is insulated from the first electrode. The variable focus lens can be easily fabricated to prevent bubble formation with the protrusion formed at the opened end of the chamber.

Abstract: The invention provides a variable focus liquid lens using electrowetting, comprising a conductive first liquid and an insulating second liquid. At least one of the first liquid composed of electrolyte and the second liquid composed of insulating liquid contains a surfactant for reducing interfacial energy between the first and second liquids. An interfacial portion between the first and second liquids is gathered by surfactant to reduce driving voltage. The variable focus liquid lens according to the invention has about 50% lower driving voltage required for changing focus, ensuring stability of the two fluids.

Abstract: Disclosed herein is an automatic pallet exchanger of a machine tool, which can exactly decide a position of a pallet exchanging operation, and which can improve stability in operation. The automatic pallet exchanger includes an APC driving shaft (30) rotatably and elevatably standing on an APC body (20); an APC arm (40) supported on the APC shaft (30) for exchanging pallets of a processing area and a waiting area; rotating means for rotating the APC driving shaft (30); a cylinder (80) inserted on the APC driving shaft (30) and fixed on the APC body; a piston mounted on the APC driving shaft (30) for elevating the APC driving shaft (30) according to hydraulic pressure direction within the cylinder (80); a stopper (100) located within a fixed radius from the APC driving shaft (30) and fixed on the APC arm (40); and a pair of stop bolts (110A, 110B) fixed on the APC body (20) to stop the rotation of the APC arm (40) by contacting with the stopper (100) whenever the APC arm (40) is rotated at an angle of 180°.

Abstract: Disclosed is a compound of Formula 1 and an organic light emitting device using the same. In Formula 1, R1, R2, and R3 each independently is selected from the group consisting of a phenyl group, an 1-naphthyl group, a 2-naphthyl group, and a pyrene.

Abstract: Disclosed is an air conditioner including a case having an inlet provided at a front surface thereof to suck in air and an outlet provided at a lower surface thereof to discharge the air, and at least one displaying member provided at an outer border of the inlet so as to display operating information and control operation of the air conditioner.

Abstract: Disclosed is an air conditioner enabling to perform an air purifying function in an optimum state according to a pollution level of room air, the air conditioner including a cabinet having a first air inlet for drawing in the air, and an air outlet for discharging purified air, a fan provided at the cabinet and forcing the air movement, and a filter unit or a suction grill selectively provided at the first air inlet.

Abstract: The present invention relates to a novel compound that can significantly improve the lifespan, efficiency and thermal stability of an organic light emitting device, and to an organic electroluminescence device or light emitting device comprising the compound in an organic compound layer is also disclosed.