Abstract: A light emitting display device includes a light emitting diode including a first electrode and a second electrode to which a driving voltage is applied, a driving transistor, a second transistor receiving a data voltage and connected to a D node, a storage capacitor connected to the driving transistor and an N node, a hold capacitor connected to the D node and the N node, a third transistor connected to the D node and the driving transistor, a fourth transistor receiving a reference voltage and connected to the driving transistor, a fifth transistor connected to the driving transistor and the N node, a sixth transistor receiving a driving low voltage and connected to the driving transistor, a seventh transistor receiving an initialization voltage and connected the driving transistor, and an eighth transistor connected to the driving transistor and the first electrode of the light emitting diode.

Abstract: An air control system and method using air in an upper zone of the atmosphere are disclosed. An air control system using air in an upper zone of the atmosphere includes: a floating body 11 provided to stay in the upper zone of the atmosphere; air transporting pipes 15a and 15b interlocked with the floating body 11 to transport air in the upper zone of the atmosphere; blowers 22a and 22b mounted below the air transporting pipe 15a and 15b; and an air transporting controller 18 controlling an operation of the blowers 22a and 22b. According to the embodiment of the present invention, it is possible to implement functions such as cooling, drying, and purifying of the surrounding air, removing mist, or generating clouds through the transport of dry and low-temperature clean air in the upper zone of the atmosphere with a simple structure.

Abstract: The present invention relates to a method for preparing an alkali metal ion conductive chalcogenide-based solid electrolyte, a solid electrolyte prepared thereby, and an all-solid-state battery comprising the same.

Abstract: A two-way speaker includes: a frame having a space for accommodating parts; a yoke partitioning the space of the frame vertically and having a lower surface and a side wall; a first speaker unit disposed below the yoke and having a magnet, a top plate, a voice coil, and a diaphragm; a protector disposed below the first speaker unit and protecting the diaphragm; a second speaker unit disposed above the yoke and having a magnetic circuit and a flexible-printed coil membrane (F-PCM) diaphragm having a coil pattern formed on a polymer film; and a sound emission yoke attached to an upper surface of the second speaker unit.

Abstract: A hybrid microspeaker includes a low-frequency range speaker and a high-frequency range speaker. The low-frequency range speaker includes a frame, a low-frequency range magnetic circuit installed inside the frame, a voice coil configured to vibrate by mutual electromagnetic force with the low-frequency range magnetic circuit, and a diaphragm seated on the frame and configured to vibrate with the voice coil to generate sound. The high-frequency range speaker includes a bracket coupled to an upper portion of the frame, a high-frequency range magnetic circuit installed inside the bracket, and a flexible printed circuit board (FPCB) seated on the bracket and including a pattern configured to vibrate by mutual electromagnetic force with the high-frequency range magnetic circuit to generate sound.

Abstract: The present disclosure relates to a flexible printed circuit board (FPCB) diaphragm microspeaker having a magnetic field pair structure, and more particularly, to a microspeaker using an FPCB diaphragm in which magnetic fields are arranged in pairs up and down to increase the strength of a horizontal component of the magnetic fields. The microspeaker includes: a FPCB diaphragm in which a conductive coil pattern is formed on a non-conductive film; an upper magnetic circuit disposed above the FPCB diaphragm and having a yoke and a magnet; and a lower magnetic circuit disposed below the FPCB diaphragm and having a yoke and a magnet. When an electrical signal is applied to the coil pattern of the FPCB diaphragm, the FPCB diaphragm vibrates to generate sound by mutual electromagnetic force between the upper magnetic circuit and the lower magnetic circuit.

Abstract: Provided are a contactless motion device including a contactless motion game device or a contactless kiosk. The contactless motion device according to an exemplary embodiment includes a substrate including at least one hole, a body unit including a sensor unit, which is disposed around the hole in a plan view, and a control unit connected to the sensor unit. The sensor unit includes a first sensor, which transmits a first signal, and a second sensor, which receives the first signal, the control unit is configured to determine whether a target object is inserted in the hole, based on the first signal received by the second sensor, and the hole completely penetrates the substrate in a thickness direction.

Abstract: Disclosed is a sound vibration sensor using a piezoelectric element having a cantilever structure. The sound vibration sensor includes a housing forming an exterior, a piezoelectric element having a cantilever structure installed in the housing, a support structure supporting a fixed end of the piezoelectric element, a weight attached to a free end of the piezoelectric element, and an energizing part configured to transmit an output from the piezoelectric element, wherein the sound vibration sensor comes into contact with a speaker's body, receives vibration of the body generated when the speaker utters a sound through the housing, and amplifies the vibration by the free end of the piezoelectric element to detect the voice vibration of the speaker using a piezoelectric characteristic of the piezoelectric element.

Abstract: Provided are a diaphragm for a high water pressure waterproof microspeaker and a high pressure waterproof microspeaker including the same. The diaphragm for a high pressure waterproof microspeaker, which is provided in a microspeaker to reproduce sound, includes a center diaphragm and a side diaphragm, includes a center diaphragm attachment portion having a ring shape with a perforated center overall and attached to an outer periphery of the center diaphragm, a frame attachment portion attached to a frame, and a dome portion located between the center diaphragm attachment portion and the frame attachment portion and protruding upwardly or downwardly. The center diaphragm attachment portion of the side diaphragm includes an upper attachment portion attached to an upper surface of the center diaphragm and a lower attachment portion attached to a lower surface of the center diaphragm.

Abstract: A microspeaker in which a diaphragm and a voice coil are replaced with a flexible printed circuit board (FPCB) is provided. The microspeaker includes: a magnetic circuit having a yoke and a magnet; and an FPCB diaphragm installed on the magnetic circuit and having a conductive coil pattern formed on a non-conductive film. When an electric signal is applied to the conductive coil pattern of the FPCB diaphragm, the FPCB diaphragm vibrates by mutual electromagnetic force with the magnetic circuit to generate sound.

Abstract: Disclosed is a translation system using a sound vibration microphone capable of fundamentally blocking noise by detecting vibrations generated from a user's voice using a piezo element. The translation system using a sound vibration microphone includes a first earset including a sound vibration sensor and a speaker, a first wearable acoustic device including a microphone and a speaker and performing wireless communication with the first earset, and a first electronic communication device performing wireless communication with the first wearable acoustic device and performing communication with a translation server, wherein the first wearable acoustic device and the first electronic communication device are in a communicatable state.

Abstract: Disclosed is a translation system using a sound vibration microphone capable of fundamentally blocking noise by detecting vibrations generated from a user's voice using a piezo element. The translation system using a sound vibration microphone includes a first earset including a sound vibration sensor and a speaker, a first wearable acoustic device including a microphone and a speaker and performing wireless communication with the first earset, and a first electronic communication device performing wireless communication with the first wearable acoustic device and performing communication with a translation server, wherein the first wearable acoustic device and the first electronic communication device are in a communicatable state.

Abstract: Disclosed is a sound vibration sensor using a piezoelectric element having a cantilever structure. The sound vibration sensor includes a housing forming an exterior, a piezoelectric element having a cantilever structure installed in the housing, a support structure supporting a fixed end of the piezoelectric element, a weight attached to a free end of the piezoelectric element, and an energizing part configured to transmit an output from the piezoelectric element, wherein the sound vibration sensor comes into contact with a speaker's body, receives vibration of the body generated when the speaker utters a sound through the housing, and amplifies the vibration by the free end of the piezoelectric element to detect the voice vibration of the speaker using a piezoelectric characteristic of the piezoelectric element.

Abstract: The present inventive concept relates to a radiography apparatus and a radiography method using the same and, more particularly, to a radiography apparatus for capturing an image of an object by using radiation, and a radiography method using the same. The radiography apparatus according to an embodiment of the present inventive concept includes: a radiation emitting unit for emitting radiation to an object; a driving unit for moving the radiation emitting unit; a radiation detection unit for detecting radiation emitted from each of a plurality of imaging positions provided at each of imaging angle with respect to the object, so as to acquire a plurality of radiation images; and a plurality of radiation sources provided in the radiation emitting unit, such that, according to the movement of the radiation emitting unit, at least one thereof is arranged at one imaging position and at least one thereof is arranged at a position spaced apart from each imaging position.

Abstract: A bidirectional translation system includes a translation relay. The translation relay includes: a first communication part configured to communicate with at least one hearing aid; a second communication part configured to communicate with a communication terminal; a microphone configured to acquire speech; a speaker configured to emit sound; and a data processor configured to create first speech data containing speech acquired by the hearing aid and second speech data containing speech acquired by the microphone, send the first and second speech data to a communication terminal via the second communication part, receive, from the communication terminal, first translated speech data corresponding to the first speech data and second translated speech data corresponding to the second speech data, and emit a first translated speech contained in the first translated speech data through a speaker and apply the second translated speech data to the heating aid via the first communication part.