Abstract: The present invention relates to a motor driving device which can reduce a load burden on a rotating shaft when a magnetic bearing is initially operated. When a rotor and a stator are initially aligned, the motor driving device can apply a greater current to a coil positioned farthest away from the ground among a plurality of coils than to the other coils, so as to reduce a levitation force necessary for initial alignment of the rotor and the stator.

Abstract: The present disclosure relates to a motor rotor assembly and a method of aligning a pole center of a permanent magnet thereof.

Abstract: A camera actuator having autofocusing and image stabilization functions includes a fixing part mounted on a portable terminal; a first coil mounted on the fixed part; a first carrier installed to be movable in the direction parallel with the lens within the fixing part; a magnet mounted on the first carrier in such a manner that the outside surface of the magnet faces the first coil; a second carrier installed to be movable in the direction of an optical axis of the lens within the first carrier and moving along with the first carrier; a second coil mounted on the second carrier, disposed within the magnet and generating a second driving force to the second carrier; a lens part including at least one lens, mounted on the second carrier, and moving along with the second carrier; and a hall sensor sensing the position of the first carrier.

Abstract: A vibrator equipped with a piezoelectric element comprises: a case of which an upper or lower surface is coupled to an object to be vibrated; a vibrating part which is disposed in the case; a piezoelectric element which is coupled to the vibrating part so as to be deformed, thereby vibrating the vibrating part up and down; and a power supply part which supplies power to the piezoelectric element. The vibrating part is formed with a hooking protrusion which is protruded laterally, and the case is formed with a hooking groove which restricts an up/down and lateral moving distance of the hooking protrusion.

Abstract: Provided is a print medium finishing apparatus including a print medium stacking plate; a stacker tray; and a print medium discharging apparatus configured to discharge, to the stacker tray, print media on the print medium stacking plate, wherein the print medium discharging apparatus includes at least one driving gear that is rotatable; a moving member configured to move linearly and curvilinearly with respect to the at least one driving gear and including a motion converting gear configured to engage the at least one driving gear and convert rotation of the at least one driving gear into a linear motion and a curvilinear motion; and a grip member configured to be moved linearly and curvilinearly by the moving member while holding the print media on the print medium stacking plate, and to place the print media on the stacker tray.

Abstract: Disclosed is an electronic device including a display; a connector; and a processor configured to sense moisture introduced into the connector in a state where one or more functions executable by connection of the connector with an external electronic device are activated; deactivate the one or more functions based on the sensing; determine whether the introduced moisture is removed in a state where the one or more functions are deactivated; and activate the one or more functions if the moisture is removed.

Abstract: Provided is a print medium finishing apparatus including a print medium stacking plate; a stacker tray; and a print medium discharging apparatus configured to discharge, to the stacker tray, print media on the print medium stacking plate, wherein the print medium discharging apparatus includes at least one driving gear that is rotatable; a moving member configured to move linearly and curvilinearly with respect to the at least one driving gear and including a motion converting gear configured to engage the at least one driving gear and convert rotation of the at least one driving gear into a linear motion and a curvilinear motion; and a grip member configured to be moved linearly and curvilinearly by the moving member while holding the print media on the print medium stacking plate, and to place the print media on the stacker tray.

Abstract: A vibrator equipped with a piezoelectric element includes a vibrating member which is formed into a flat type and of which both ends are coupled to an object; a piezoelectric element which is coupled to an upper or lower surface of the vibrating member; and a power supply part which supplies power to the piezoelectric element, wherein the vibrating member includes an operating part including a first operating surface which is disposed horizontally and a second operating surface which is bent down and extended from both ends of the first operating surface; and a fixing part which is extended from the both ends of the operating so as to be coupled to the object.

Abstract: A camera actuator having autofocusing and image stabilization functions includes a fixing part mounted on a portable terminal; a first coil mounted on the fixed part; a first carrier installed to be movable in the direction parallel with the lens within the fixing part; a magnet mounted on the first carrier in such a manner that the outside surface of the magnet faces the first coil; a second carrier installed to be movable in the direction of an optical axis of the lens within the first carrier and moving along with the first carrier; a second coil mounted on the second carrier, disposed within the magnet and generating a second driving force to the second carrier; a lens part including at least one lens, mounted on the second carrier, and moving along with the second carrier; and a hall sensor sensing the position of the first carrier.

Abstract: A vibrator equipped with a piezoelectric element comprises: a case of which an upper or lower surface is coupled to an object to be vibrated; a vibrating part which is disposed in the case; a piezoelectric element which is coupled to the vibrating part so as to be deformed, thereby vibrating the vibrating part up and down; and a power supply part which supplies power to the piezoelectric element. The vibrating part is formed with a hooking protrusion which is protruded laterally, and the case is formed with a hooking groove which restricts an up/down and lateral moving distance of the hooking protrusion.

Abstract: A vibrator equipped with a piezoelectric element comprises: a case of which an upper or lower surface is coupled to an object to be vibrated; a vibrating part which is disposed in the case; a piezoelectric element which is coupled to the vibrating part so as to be deformed, thereby vibrating the vibrating part up and down; and a power supply part which supplies power to the piezoelectric element. The case comprises a base; and a support part which is protruded from both sides of the base and also coupled to both sides of the vibrating plate so as to elastically support the vibrating plate upward and downward, and a deformation quantity of the vibrating plate which is deformed to be bent by external impact is reduced while the support part is deformed together.

Abstract: Disclosed is a vibrator equipped with a piezoelectric element, and more particularly, to a vibrator equipped with a piezoelectric element, in which vibration is generated by using bending deformation of the piezoelectric element. The vibrator equipped with a piezoelectric element, including a vibrating member which is formed into a flat type and of which both ends are coupled to an object; a piezoelectric element which is coupled to an upper or lower surface of the vibrating member; and a power supply part which supplies power to the piezoelectric element, wherein the vibrating member includes an operating part including a first operating surface which is disposed horizontally and a second operating surface which is bent down and extended from both ends of the first operating surface; and a fixing part which is extended from the both ends of the operating so as to be coupled to the object.

Abstract: Disclosed is a touch motion switch, more particularly a touch motion switch which generates vibrations such that a user feels vibrations when touching a switch. The touch motion switch includes: a case having a first guide therein; a vibration unit coupled to the case to be movable vertically and having a second guide movable vertically along the first guide; a resilient member mounted to the case to support the vibration unit and resiliently deformed when the vibration unit is moved vertically; a magnetic force unit inserted into the case; and a coil unit mounted to the second guide, for providing a driving force such that the vibration unit is vertically moved to vibrate by an electromagnetic interaction with the magnetic force unit.

Abstract: Disclosed is a haptic module using a piezoelectric element. The haptic module comprises a base, a vibration member which is mounted on the upper portion of the base so as to be vertically movable, a piezoelectric element which couples to the vibration member, a power portion for applying power to the piezoelectric element, and a panel member which is mounted to the upper portion of the vibration member. According to the present invention, vertical movement of the vibration member effectively sends force to the panel member by means of the piezoelectric element to facilitate the vertical movement and enhance driving force, and thereby enhances the feeling of vibration or clicking of the panel member.

Abstract: A paper feeder, a control method thereof, and an image forming apparatus having the same are provided. The paper feeder includes a moving member to push paper loaded on one paper loader to another empty paper loader. With regard to operation of the moving member, the stop time of the moving member may be variable based on a paper size input by a user, which enables a stop position of the moving member to be automatically adjusted based on the paper size, resulting in enhanced user convenience.

Abstract: Disclosed is a haptic module using a piezoelectric element. The haptic module comprises a base, a vibration member which is mounted on the upper portion of the base so as to be vertically movable, a piezoelectric element which couples to the vibration member, a power portion for applying power to the piezoelectric element, and a panel member which is mounted to the upper portion of the vibration member.

Abstract: The present invention relates to a driving body and a driving device having a piezoelectric element mounted thereon, and more particularly, to a driving body and a driving device having a piezoelectric element mounted thereon for transferring a lens by actuating a lens holder in a vertical direction using the piezoelectric element.

Abstract: A paper feeder, a control method thereof, and an image forming apparatus having the same are provided. The paper feeder includes a moving member to push paper loaded on one paper loader to another empty paper loader. With regard to operation of the moving member, the stop time of the moving member may be variable based on a paper size input by a user, which enables a stop position of the moving member to be automatically adjusted based on the paper size, resulting in enhanced user convenience.

Abstract: A paper feeder, a control method thereof, and an image forming apparatus having the same are provided. The paper feeder includes a moving member to push paper loaded on one paper loader to another empty paper loader. With regard to operation of the moving member, the stop time of the moving member may be variable based on a paper size input by a user, which enables a stop position of the moving member to be automatically adjusted based on the paper size, resulting in enhanced user convenience.

Abstract: A liquid crystal display device and a driving method thereof, which are capable of preventing generation of a residual image upon power-off, are disclosed. The liquid crystal display device includes a power supply unit for outputting a plurality of drive voltages after delaying the drive voltages, a voltage detector for monitoring one of the drive voltages, and outputting a power-off detect signal based on the result of the monitoring, a timing controller for increasing a frequency of a control signal in response to the power-off detect signal, and outputting the frequency-increased control signal, a gate driver for outputting a scan signal in response to the frequency-increased control signal, a data driver for outputting a constant voltage in response to another control signal from the timing controller, and a liquid crystal panel for applying the constant voltage to all sub-pixels of the liquid crystal panel in response to the scan signal.