Abstract: There is provided a vibration generating device including: a housing having an internal space; a base member installed in the housing to be disposed in a central portion of the housing; a first plate installed on the base member; a first piezoelectric element installed on an upper surface of the first plate; a second piezoelectric element disposed to face the first piezoelectric element through a connection member; a second plate installed on the second piezoelectric element; and a vibration amplifying part installed on an upper surface of the second plate.

Abstract: There is provided a vibration generating device including: a piezoelectric element which is deformed when power is applied thereto; an installation member below which the piezoelectric element is installed; a weight fixedly installed below the installation member to be disposed below the piezoelectric element; a plurality of elastic members connected to the installation member to change a displacement direction by deformation of the installation member and disposed to face each other; and a damper member fixedly installed on a lower surface of the weight, wherein a thickness of the damper member is determined to allow the damper member to be disposed in a space formed by the plurality of elastic members when the elastic members are driven normally.

Abstract: There is provided a vibration generating apparatus including: a housing having an internal space; a vibrating plate fixedly installed in the housing and having a disc shape; a piezoelectric element fixed to the vibrating plate and having a hollow disc shape; and a vibration element vibrating together with the vibrating plate when the piezoelectric element is deformed.

Abstract: A piezoelectric element includes an element layer, an electrode layer including one or more positive electrode layers and one or more negative electrode layers repeatedly stacked to alternate with each other on the element layers in a vertical direction, a primary positive electrode connection member connecting the positive electrode layers, a primary negative electrode connection member connecting the negative electrode layers, at least one secondary positive electrode connection member, at least one secondary negative electrode connection member, and a primary electrode connected to the primary positive electrode connection member and the primary negative electrode connection member and configured of a pair of electrodes, and at least one secondary electrode spaced apart from the primary electrode and configured of a pair of electrodes.

Abstract: Disclosed herein is a piezo vibration module, including: a piezo element having a pattern of an internal electrode printed therein and having an external electrode connected to the internal electrode disposed on an outer surface thereof; a flexible printed circuit board (FPCB) having each terminal and applying power to the external electrodes of the piezo element; and a conductive adhesive interposed between the piezo element and the FPCB to electrically connect the piezo element to the flexible printed circuit board.

Abstract: A piezoelectric element includes an element layer, an electrode layer including one or more positive electrode layers and one or more negative electrode layers repeatedly stacked to alternate with each other on the element layers in a vertical direction, a primary positive electrode connection member connecting the positive electrode layers, a primary negative electrode connection member connecting the negative electrode layers, at least one secondary positive electrode connection member, at least one secondary negative electrode connection member, and a primary electrode connected to the primary positive electrode connection member and the primary negative electrode connection member and configured of a pair of electrodes, and at least one secondary electrode spaced apart from the primary electrode and configured of a pair of electrodes.

Abstract: A piezoelectric element includes an element layer, an electrode layer including one or more positive electrode layers and one or more negative electrode layers repeatedly stacked to alternate with each other on the element layers in a vertical direction, a primary positive electrode connection member connecting the positive electrode layers, a primary negative electrode connection member connecting the negative electrode layers, at least one secondary positive electrode connection member, at least one secondary negative electrode connection member, and a primary electrode connected to the primary positive electrode connection member and the primary negative electrode connection member and configured of a pair of electrodes, and at least one secondary electrode spaced apart from the primary electrode and configured of a pair of electrodes.

Abstract: There is provided a vibrator including: a housing having an internal space; an elastic member including a housing fixed part fixed to the housing, a piezoelectric element mounted part disposed so as to face the housing fixed part, and a weight body installed part disposed adjacent to the housing fixed part; a piezoelectric element fixed to the piezoelectric element mounted part; and a weight body fixed to the weight body installed part, wherein the elastic member has a closed curve shape.

Abstract: There is provided a vibration generating device including: a piezoelectric element which is deformed when power is applied thereto; an installation member below which the piezoelectric element is installed; a weight fixedly installed below the installation member to be disposed below the piezoelectric element; a plurality of elastic members connected to the installation member to change a displacement direction by deformation of the installation member and disposed to face each other; and a damper member fixedly installed on a lower surface of the weight, wherein a thickness of the damper member is determined to allow the damper member to be disposed in a space formed by the plurality of elastic members when the elastic members are driven normally.

Abstract: There is provided a vibration generating device including: a housing having an internal space; a base member installed in the housing to be disposed in a central portion of the housing; a first plate installed on the base member; a first piezoelectric element installed on an upper surface of the first plate; a second piezoelectric element disposed to face the first piezoelectric element through a connection member; a second plate installed on the second piezoelectric element; and a vibration amplifying part installed on an upper surface of the second plate.

Abstract: A photocharge storage element includes a gate insulator formed on a gate electrode, a channel formed on the gate insulator between a source electrode and a drain electrode, and an organic photoelectric conversion element formed on the channel. The organic photoelectric conversion element generates photocharges in response to light. The channel accumulates the photocharges generated by the organic photoelectric conversion element. The photocharges accumulated in the channel are read out from the channel in response to a voltage between the source electrode and the drain electrode.

Abstract: A vibrator includes: a housing having an interior space; a vibrating member installed within the housing; a piezoelectric element installed on a top surface of the vibrating member; and space forming parts disposed to face side surfaces of the piezoelectric element, respectively, and forming a space in which a filler is provided, together with the side surfaces of the piezoelectric element.

Abstract: A vibrator includes a piezoelectric element deformed when power is applied thereto, an installation member having the piezoelectric element installed thereon, and a plurality of elastic members connected to the installation member and changing a displacement direction through deformation of the installation member. The plurality of elastic members are disposed to oppose each other.

Abstract: There is provided a vibration generating apparatus including: a housing having an internal space; a vibrating plate fixedly installed in the housing and having a disc shape; a piezoelectric element fixed to the vibrating plate and having a hollow disc shape; and a vibration element vibrating together with the vibrating plate when the piezoelectric element is deformed.

Abstract: There is provided a vibrator including: a housing having an internal space; an elastic member including a housing fixed part fixed to the housing, a piezoelectric element mounted part disposed so as to face the housing fixed part, and a weight body installed part disposed adjacent to the housing fixed part; a piezoelectric element fixed to the piezoelectric element mounted part; and a weight body fixed to the weight body installed part, wherein the elastic member has a closed curve shape.

Abstract: Disclose herein is a linear vibration motor including: a stator part including a coil having a power applied from the outside thereto to form a magnetic field; a vibrator part including a magnet facing the coil; and an elastic member having one end coupled to the stator part and the other end coupled to the vibrator part to elastically support linear vibration of the vibrator part, wherein the stator part includes: a cover member including a set fixing part extended to one side thereof to thereby be fixedly coupled to a set component and an extended plate extended to the other side thereof; an upper case coupled to an upper portion of the cover member so as to receive the vibrator part therein; a printed circuit board having the coil coupled thereto and coupled to the cover member and an upper portion of the extended plate; and a contact part fixedly coupled to an upper portion of the printed circuit board of which a portion is coupled to the extended plate.

Abstract: A piezoelectric element includes an element layer, an electrode layer including one or more positive electrode layers and one or more negative electrode layers repeatedly stacked to alternate with each other on the element layers in a vertical direction, a primary positive electrode connection member connecting the positive electrode layers, a primary negative electrode connection member connecting the negative electrode layers, at least one secondary positive electrode connection member, at least one secondary negative electrode connection member, and a primary electrode connected to the primary positive electrode connection member and the primary negative electrode connection member and configured of a pair of electrodes, and at least one secondary electrode spaced apart from the primary electrode and configured of a pair of electrodes.

Abstract: There is provided a vibration generating apparatus including: a piezoelectric element fixedly attached to a vibration transfer member and expanded and contracted in a direction from an inner surface thereof toward an outer surface thereof or in a direction from the outer surface thereof toward the inner surface thereof when power is applied thereto; and a vibration element connected to the piezoelectric element to vibrate.

Abstract: Disclosed herein is a piezo vibration module, including: a piezo element having a pattern of an internal electrode printed therein and having an external electrode connected to the internal electrode disposed on an outer surface thereof; a flexible printed circuit board (FPCB) having each terminal and applying power to the external electrodes of the piezo element; and a conductive adhesive interposed between the piezo element and the FPCB to electrically connect the piezo element to the flexible printed circuit board.

Abstract: A linear vibrator includes a fixed part providing an interior space having a predetermined size; at least one magnet disposed in the interior space and generating magnetic force; a vibration part including a coil facing the magnet and generating electromagnetic force through interaction with the magnet and a mass body; and a substrate having one end coupled to the vibration part to thereby serve as a free end, and the other end including a copper foil pattern portion coupled to the fixed part to thereby serve as a fixed end. The fixed part includes an exposure hole penetrating a top and bottom surface thereof or an exposure groove recessed from an outer end of the fixed part. The exposure hole or groove is formed on the protrusion portion. The copper foil pattern portion is coupled with a part of the protrusion portion defining the exposure hole or groove.