Abstract: The present disclosure relates to an organic electroluminescent device. The organic electroluminescent device of the present disclosure shows high luminous efficiency and good lifespan by comprising a specific combination of the plural kinds of host compounds and a specific hole transport compound.

Abstract: The present invention relates to a multi-component host material and an organic electroluminescent device comprising the same. By comprising a specific combination of the multi-component host compounds, the organic electroluminescent device according to the present invention can provide high luminous efficiency and excellent lifespan characteristics.

Abstract: The present disclosure relates to an organic electroluminescent device. The organic electroluminescent device of the present disclosure shows high luminous efficiency and good lifespan by comprising a specific combination of the plural kinds of host compounds and a specific hole transport compound.

Abstract: Disclosed is a camera module comprising: a lens assembly comprising a liquid lens which comprises a first liquid and a second liquid forming the surface; a gyro sensor for outputting inclination information; and a controller for adjusting the surface by applying a driving signal to the liquid lens on the basis of focal information and the inclination information, wherein the controller applies different weights to the driving signal in accordance with the angular velocity of the liquid lens obtained on the basis of the inclination information.

Abstract: The present embodiment relates to a lens driving device comprising: a lens barrel; a lens disposed in the lens barrel; and a driving unit disposed in the lens barrel, wherein: the driving unit includes a piezoelectric element expanding or contracting in a direction perpendicular to an optical axis direction of the lens when a voltage is applied thereto, a first member disposed on the piezoelectric element, and a second member coupled to the first member and disposed in the lens barrel; the lens barrel moves in the optical axis direction of the lens when the voltage is applied to the piezoelectric element; and a first length in the lengthwise direction of the first member is shorter than a second length in the lengthwise direction of the second member.

Abstract: A system and method for generating air plasma by radiating a laser in the air, and making a user feel a somatic sense such as a tactile sense, a thermal sense or the like using a principle of inducing a state change in a medium as a result of a shock wave or an electric field generated by the air plasma.

Abstract: The present invention relates to a system for fundamentally eliminating skin damage caused by direct radiation of a laser beam on the skin of a user and inducing a somatic sensation on the skin within a safety standard by radiating a pulse laser beam on a medium attached to the skin of the user on which the somatic sensation is desired to be induced. Particularly, the present invention relates to a somatic sensation induction system which can induce a somatic sensation of various feelings delivered to a user by adjusting an absorption coefficient of a medium contacting with the skin of a user, energy intensity and a repetition rate of a radiated laser beam and the like.

Abstract: A system and method for generating air plasma by radiating a laser in the air, and making a user feel a somatic sense such as a tactile sense, a thermal sense or the like using a principle of inducing a state change in a medium as a result of a shock wave or an electric field generated by the air plasma.

Abstract: The present invention relates to a system for fundamentally eliminating skin damage caused by direct radiation of a laser beam on the skin of a user and inducing a somatic sensation on the skin within a safety standard by radiating a pulse laser beam on a medium attached to the skin of the user on which the somatic sensation is desired to be induced. Particularly, the present invention relates to a somatic sensation induction system which can induce a somatic sensation of various feelings delivered to a user by adjusting an absorption coefficient of a medium contacting with the skin of a user, energy intensity and a repetition rate of a radiated laser beam and the like.

Abstract: The present invention relates to a laser apparatus for inducing a photo-mechanical effect. More particularly, the present invention relates to a laser apparatus for outputting a pulsed laser beam and inducing a photo-mechanical effect by controlling pulse energy of the pulsed laser beam.

Abstract: The present invention relates to a laser apparatus for inducing a photo-mechanical effect. More particularly, the present invention relates to a laser apparatus for outputting a pulsed laser beam and inducing a photo-mechanical effect by controlling pulse energy of the pulsed laser beam.

Abstract: A mobile communication terminal and a controlling method thereof are disclosed, by which reception performance of the mobile communication terminal can be enhanced while SAR is reduced. According to an embodiment, the terminal includes a body part comprising a circuit board having radio communication parts mounted thereon and a display to output images of prescribed information; a grounded part for selectively grounding at least one of the circuit board and the display; and a ground controlling part configured to enable at least one of the circuit board and the display to be selectively connected to the grounded part for grounding.

Abstract: A mobile communication terminal and a controlling method thereof are disclosed, by which reception performance of the mobile communication terminal can be enhanced while SAR is reduced. According to an embodiment, the terminal includes a body part comprising a circuit board having radio communication parts mounted thereon and a display to output images of prescribed information; a grounded part for selectively grounding at least one of the circuit board and the display; and a ground controlling part configured to enable at least one of the circuit board and the display to be selectively connected to the grounded part for grounding.