Abstract: A curable composition or a thermal interface material exhibiting low adhesion force to a predetermined adherend while having a low density as well as exhibiting a high thermal conductivity is provided. It also has excellent flame retardant properties, and exhibits ejection properties and thixotropy suitable for processes in a state where halogen flame retardants or phosphorus-based flame retardants are not used, or the use ratio thereof is minimized.

Abstract: An adhesive composition includes an acrylic monomer, and a crosslinking agent. A storage modulus of the adhesive composition after curing the adhesive composition at a temperature of about ?20° C. divided by a storage modulus of the adhesive composition after curing the adhesive composition at a temperature of about 60° C. is be greater than about 1 and less than about 10.

Abstract: An optical film for a display device, includes: a first refractive layer having an upper surface and a lower surface including first projections and second projections extending away from the lower surface in a first direction, the second projections having different heights than the first projections, the first projections having lateral sides with different angles of inclination that decrease in the first direction; and a second refractive layer disposed directly on the upper surface of the first refractive layer, the second refractive layer having a refractive index different from that of the first refractive layer.

Abstract: Provided are a chromium catalyst precursor, an ethylene oligomerization catalyst including the same, and a method of preparing an ethylene oligomer using the same. More particularly, a chromium catalyst precursor which may oligomerize ethylene with high activity and high selectivity in spite of not using methylaluminoxane (MAO) or modified-methylaluminoxane (MMAO), an oligomerization catalyst including the same, and a method of preparing an ethylene oligomer using the same are provided.

Abstract: A method for wirelessly charging a portable terminal using a Radio Frequency (RF) is provided. A charging system detects one or more portable terminals within a predetermined area, and preferably requests information needed for charging to the one or more portable terminals via short-range communication, receives the information in response needed for charging from each of the one or more portable terminals. A portable terminal to be wirelessly charged from among the one or more portable terminals is selected, based on the received information needed for charging, and the charging system transmits a predetermined RF for charging to the selected portable terminal.

Abstract: The present disclosure relates to a holographic display system including: a projection object having a three-dimensional shape corresponding to an original item; an image projection unit comprising projectors projecting unit images of parts selected from a three-dimensional image of the original item on the projection object; and a reflector disposed adjacent to the projection object and reflecting images reflected from the projection object to provide an augmented three-dimensional holographic image. In the disclosure, the unit images corresponding to a three-dimensional image of an original item are projected on the projection object having a three-dimensional shape corresponding to the original item using the projectors and reflected by the projection object and augmented by the reflector, thereby providing a virtual image having three dimensional information corresponding to the original item, whereby a proper image is provided to an observer even when the viewpoint of the observer is changed.

Abstract: Disclosed is an electronic disc brake. The electronic disc brake includes a disc configured to rotate with vehicle wheels, a caliper housing configured to operate pad plates installed at both sides of the disc, and an actuator having a piston provided inside the caliper housing to press the pad plates to adhere the pad plates to the disc, a spindle rotatably installed at the caliper housing to reciprocate the piston, an electric motor configured to rotate the spindle, and a decelerator configured to transmit a rotational force of the electric motor to the spindle, wherein the decelerator includes a power connection unit connected to the electric motor, planetary gear units configured to connect the power connection unit to the spindle, and a center pin configured to pass through the power connection unit and the planetary gear units, and the center pin is fitted into the power connection unit and the planetary gear units to be rotatable relative thereto.

Abstract: Disclosed herein is an electronic parking brake including: a carrier fixed to a body of a vehicle; a caliper housing that is slidably installed in the carrier; a motor that is disposed at an outside of the caliper housing and generates a rotational force; a decelerator that amplifies the rotational force of the motor; and a conversion unit that converts a rotational force transmitted from the decelerator into a rectilinear motion, wherein the decelerator includes a belt planetary gear part, and the belt planetary gear part includes: a solar gear rotated by receiving the rotational force of the motor; a belt gear engaged with the solar gear; a transmission plate that is connected to the belt gear and has belt support parts for supporting the belt gear so that the belt gear is rotatable; and a ring gear that is engaged with an outer surface of the belt gear and fixed to the belt gear so as to rotate the transmission plate.

Abstract: Disclosed is an electric caliper brake. The electric caliper brake includes a carrier including a pair of pad plates installed to be moveable forward and backward, a caliper housing configured to be installed to be slidable on the carrier and to have a cylinder in which a piston of which an inside is dug in a form of a cup is moveable forward and backward due to a brake hydraulic pressure, a power conversion unit including a spindle member installed to pass through a rear of the cylinder and rotating due to a rotational force delivered from an actuator and a nut member screw-coupled to the spindle member, disposed in the piston, moving forward and backward according to rotation of the spindle member, pressurizing the piston, and releasing the pressurizing, and a filling member configured to be disposed in the piston in such a way that rotation of the filling member is limited, the filling member being coupled to the nut member.

Abstract: Disclosed is an electronic disc brake. The electronic disc brake includes a disc configured to rotate with vehicle wheels, a caliper housing configured to operate pad plates installed at both sides of the disc, and an actuator having a piston provided inside the caliper housing to press the pad plates to adhere the pad plates to the disc, a spindle rotatably installed at the caliper housing to reciprocate the piston, an electric motor configured to rotate the spindle, and a decelerator configured to transmit a rotational force of the electric motor to the spindle. The decelerator includes a power connection unit connected to the electric motor, planetary gear units configured to connect the power connection unit to the spindle, and a center pin configured to pass through the power connection unit and the planetary gear units. The power connection unit includes a driving gear provided at a shaft of the electric motor and a driven gear connected to the planetary gear units.

Abstract: The present disclosure relates to a holographic display system including: a projection object having a three-dimensional shape corresponding to an original item; an image projection unit comprising projectors projecting unit images of parts selected from a three-dimensional image of the original item on the projection object; and a reflector disposed adjacent to the projection object and reflecting images reflected from the projection object to provide an augmented three-dimensional holographic image. In the disclosure, the unit images corresponding to a three-dimensional image of an original item are projected on the projection object having a three-dimensional shape corresponding to the original item using the projectors and reflected by the projection object and augmented by the reflector, thereby providing a virtual image having three dimensional information corresponding to the original item, whereby a proper image is provided to an observer even when the viewpoint of the observer is changed.

Abstract: Disclosed is an electronic disc brake. The electronic disc brake includes a disc configured to rotate with vehicle wheels, a caliper housing configured to operate pad plates installed at both sides of the disc, and an actuator having a piston provided inside the caliper housing to press the pad plates to adhere the pad plates to the disc, a spindle rotatably installed at the caliper housing to reciprocate the piston, an electric motor configured to rotate the spindle, and a decelerator configured to transmit a rotational force of the electric motor to the spindle. The decelerator includes a power connection unit connected to the electric motor, planetary gear units configured to connect the power connection unit to the spindle, and a center pin configured to pass through the power connection unit and the planetary gear units. The power connection unit includes a driving gear provided at a shaft of the electric motor and a driven gear connected to the planetary gear units.

Abstract: Disclosed is an electric caliper brake. The electric caliper brake includes a carrier including a pair of pad plates installed to be moveable forward and backward, a caliper housing configured to be installed to be slidable on the carrier and to have a cylinder in which a piston of which an inside is dug in a form of a cup is moveable forward and backward due to a brake hydraulic pressure, a power conversion unit including a spindle member installed to pass through a rear of the cylinder and rotating due to a rotational force delivered from an actuator and a nut member screw-coupled to the spindle member, disposed in the piston, moving forward and backward according to rotation of the spindle member, pressurizing the piston, and releasing the pressurizing, and a filling member configured to be disposed in the piston in such a way that rotation of the filling member is limited, the filling member being coupled to the nut member.

Abstract: Disclosed is an electronic disc brake. The electronic disc brake includes a disc configured to rotate with vehicle wheels, a caliper housing configured to operate pad plates installed at both sides of the disc, and an actuator having a piston provided inside the caliper housing to press the pad plates to adhere the pad plates to the disc, a spindle rotatably installed at the caliper housing to reciprocate the piston, an electric motor configured to rotate the spindle, and a decelerator configured to transmit a rotational force of the electric motor to the spindle. The decelerator includes a power connection unit connected to the electric motor, planetary gear units configured to connect the power connection unit to the spindle, and a center pin configured to pass through the power connection unit and the planetary gear units. The power connection unit includes a driving gear provided at a shaft of the electric motor and a driven gear connected to the planetary gear units.

Abstract: Disclosed is an electronic disc brake. The electronic disc brake includes a disc configured to rotate with vehicle wheels, a caliper housing configured to operate pad plates installed at both sides of the disc, and an actuator having a piston provided inside the caliper housing to press the pad plates to adhere the pad plates to the disc, a spindle rotatably installed at the caliper housing to reciprocate the piston, an electric motor configured to rotate the spindle, and a decelerator configured to transmit a rotational force of the electric motor to the spindle, wherein the decelerator includes a power connection unit connected to the electric motor, planetary gear units configured to connect the power connection unit to the spindle, and a center pin configured to pass through the power connection unit and the planetary gear units, and the center pin is fitted into the power connection unit and the planetary gear units to be rotatable relative thereto.

Abstract: A method for wirelessly charging a portable terminal using a Radio Frequency (RF) is provided. A charging system detects one or more portable terminals within a predetermined area, and preferably requests information needed for charging to the one or more portable terminals via short-range communication, receives the information in response needed for charging from each of the one or more portable terminals. A portable terminal to be wirelessly charged from among the one or more portable terminals is selected, based on the received information needed for charging, and the charging system transmits a predetermined RF for charging to the selected portable terminal.

Abstract: A method for wirelessly charging a portable terminal using a Radio Frequency (RF) is provided. A charging system detects one or more portable terminals within a predetermined area, and preferably requests information needed for charging to the one or more portable terminals via short-range communication, receives the information in response needed for charging from each of the one or more portable terminals. A portable terminal to be wirelessly charged from among the one or more portable terminals is selected, based on the received information needed for charging, and the charging system transmits a predetermined RF for charging to the selected portable terminal.

Abstract: Disclosed herein is a variable pedal feeling adjustment device. A pedal simulator includes a simulator block formed with an oil hole at an upper portion thereof which is connected to a master cylinder to receive hydraulic pressure caused by pedal effort of a driver and a bore which communicates with the oil hole, a first reaction unit and a second reaction unit arranged in series in the bore and configured to be pressurized sequentially by pedal effort, and a damping housing configured to support the second reaction unit and installed to a lower portion of the bore while being restricted in rotation. An actuator includes a spindle screw-coupled to the damping housing and a motor connected to the spindle to supply rotational force to the spindle. The damping housing is moved linearly and changed in position by forward and backward rotation of the spindle.

Abstract: Disclosed herein is an electronic parking brake.

Abstract: Disclosed herein is an electronic parking brake including: a carrier fixed to a body of a vehicle; a caliper housing that is slidably installed in the carrier; a motor that is disposed at an outside of the caliper housing and generates a rotational force; a decelerator that amplifies the rotational force of the motor; and a conversion unit that converts a rotational force transmitted from the decelerator into a rectilinear motion, wherein the decelerator includes a belt planetary gear part, and the belt planetary gear part includes: a solar gear rotated by receiving the rotational force of the motor; a belt gear engaged with the solar gear; a transmission plate that is connected to the belt gear and has belt support parts for supporting the belt gear so that the belt gear is rotatable; and a ring gear that is engaged with an outer surface of the belt gear and fixed to the belt gear so as to rotate the transmission plate.