Lg Electronics Inc.

Uniam

Shin-a T&c

Koh Young Technology Inc.

Shtn-a T & C

In Won Lee

Seung Mo Hong

In Seop Lee

Jin Han Song

Kwang Hyup An

Hyeok Jin Hong

Jeong Ho Lee

Seong Ho Cho

Deok Hwa Hong

Young Sok Nam

Jay Ho Choi

Ju Young Lee

Seok Kyu Park

Jae Yong Sung

Won Jong Song

Jeong-Ho Lee

Sung Hun Choi

A method of preparing a quantum dot nanoparticle is disclosed. The method includes the step of reacting one or more cation precursors including one or more of Groups 12 and 13 elements with one or more anion precursors including one or more of Group 15 elements to prepare a quantum dot nanoparticle, wherein the reaction of the cation precursors and the anion precursors is carried out while supplying a compound represented by Chemical Formula 1. A quantum dot nanoparticle prepared by the preparation method, a quantum dot nanoparticle having a core-shell structure containing the quantum dot nanoparticle as a core, and a light emitting element comprising the quantum dot nanoparticle having a core-shell structure are also disclosed.

Method for producing a quantum dot nanoparticles, quantum dot nanoparticles prepared by the method, quantum dot nanoparticles having a core-shell structure, and light emitting element

The present invention relates to a photocurable resin composition, a method for preparing the same, and an optical film comprising the same, more specifically, the photocurable resin composition comprises organophosphate-based (meth)acrylate; and a phenolic compound or a phosphate compound containing phenolic &#x2014;OH. Thus, since the photocurable resin composition can ensure storage stability, it is suitable as a material for a transparent display.

Photocurable resin composition, method for preparing the same, and optical film comprising the same

The present disclosure provides an optical tracking system for tracking a location and a posture of a marker. The marker is attachable to a target and configured so that a pattern surface formed inside the marker is visible through an optical system formed in an aperture. The system includes a processor configured to determine the posture of the marker based on a first image in which a part of the pattern surface viewed through the aperture is captured at an infinite focal length, and to determine the location of the marker based on a second image and a third image in which outgoing lights emitted through the aperture in different directions are captured at a focal length shorter than the infinite focal length.

Optical tracking system and optical tracking method

The present invention relates to a composition for forming a quantum dot layer comprising: at least one active energy ray-curable compound (A) having an ethylenically unsaturated double bond, at least one thiol compound (B) having at least two mercapto groups in one molecule, a photo-initiator (C); quantum particles (D), and scattering particles (E), wherein the composition contains 0.20-0.80 equivalents of the compound (B) per one equivalent of the compound (A), and the W value of the compound (A) calculated by Math formula 1 is 3.0 or more, and the present invention also relates to a quantum dot film, a backlight unit, and a liquid crystal display.

Composition for forming a quantum dot layer, quantum dot film, backlight unit, and liquid crystal display

A light conversion film is disclosed. The light conversion film includes a first transparent support layer and a second transparent support layer are formed on upper and lower surfaces of a quantum dot layer, respectively. The quantum dot layer contains 0.4 to 2.0% by weight of quantum dot particles containing 5% by weight or more and less than 35% by weight of cadmium; 0.05 to 0.75% by weight of cadmium-free quantum dot particles; 0.1 to 10% by weight of scattering agent; and 75 to 98% by weight of matrix material, based on the total weight of the quantum dot layer. A backlight unit for a display device including the light conversion film is disclosed.

Light conversion film comprising a quantum dot layer, backlight units for display devices including the light conversion film, and method of manufacturing a quantum dot dispersion

The invention relates to a crank shaft having a guide groove allowing the movement of a crank pin so as to adjust the reciprocating distance of a piston according to the rotating direction. The crank shaft comprises a rotation shaft for inducing the rotating movement; and a crank arm connected to the rotation shaft at the center and having at one side a guide groove provided horizontal in the radial direction for allowing free movement of a crank pin and elastic means provided within the guide groove to enhance the performance of sucking and compressing fluid. Accordingly, smooth and soft compression is enabled to prevent the overpressure loss. Also, the sucking performance is improved by using additional retreat due to the elastic means.

Crank shaft

An apparatus controls cool air for directedly cooling a section which is weakly cooled or which stores new loads. The apparatus discharges the cool air by rotating a drive body in accordance with a variation of visual images taken by visual image generator before and after the load is stored. The cool air can also be discharged into a specific storage space by rotating cool air injection nozzles based upon the temperature variation of door baskets detected by temperature sensors. Therefore, a uniform temperature distribution can be maintained in the cooling device to substantially reduce an amount of power consumption.

Apparatus and method for controlling cool air in refrigerator

Disclosed is an exhaust valve capable of correctly opening/shutting an exhaust port of a cylinder based upon variation of the flux density of an electromagnet. The inventive exhaust valve may comprise a guide connected in parallel to an exhaust port of a cylinder, a needle valve provided inside the guide for opening/shutting the exhaust port while moving in cooperation with the guide. The needle valve may be controlled with an electromagnet. The invention enables complete opening of the exhaust port of the cylinder in exhaustion thereby preventing degradation of compression efficiency due to valve damage while reducing generation of vibration and noise.

Reciprocating compressor having an exhaust valve controlled by an electromagnet

A suction muffler in a reciprocating compressor is installed over a suction valve to attenuate complex sound pressure (noise) such as vibrational noise, valve sonance, flowing noise and pulsative noise produced from the suction valve when low temperature, low pressure refrigerant gas ejected from an evaporator is sucked into a cylinder via the suction valve and a suction portion of the cylinder. A Tesla valve having two distribution paths is mounted in the suction muffler to attenuate the complex sound pressure (noise) while preventing the reflow of the refrigerant gas into the suction muffler from the suction valve. As a result, the Tesla valve also enhances the cooling ability of the compressor and the attenuation effect.

Suction muffler in reciprocating compressor

The invention relates to a cool air controlling apparatus for concentrically cooling a region in a refrigerator where a new load is stored. The apparatus comprises: the first cool air duct provided along a compartment wall of a refrigerator with a certain length for allowing the cool air introduced from a blowing chamber to flow therethrough; the second cool air duct having a variable length provided downward from a front end of the first cool air duct; length adjusting means connected to the second cool air duct for adjusting the length of the second cool air duct; and rotation adjusting means attached to a lower end of the second cool air duct for carrying out rotation and injecting the cool air. The entire temperature distribution is uniformly maintained in a refrigerating chamber thereby greatly reducing power consumption.

Growing community of inventors

Seoul, South Korea

In Won Lee