Hakyoung
Hakyoung Chung, Seoul KR
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20120063269 | ROTARY TYPE DISTANCE ESTIMATION APPARATUS AND MOVING BODY INCLUDING THE SAME - Provided is a rotary type distance estimation apparatus. The rotary type distance estimation apparatus includes: a signal transmission unit transmitting a signal for measuring a distance to an obstacle; a signal reception unit receiving the signal reflected by the obstacle; a distance calculation unit calculating the distance to the obstacle by processing the received signal; a rotation unit rotating a direction of the signal transmitted from the signal transmission unit; and a determination unit determining the direction of the signal within a predetermined angle range according to what number of times the received signal matches based on a rotation angle per sampling of the signal. | 03-15-2012 |
20120158236 | LAWN MOWER FOR FORMING IMAGES - Provided is a lawn mower for forming images. The lawn mower includes: an image input unit receiving an image to be formed in a lawn area; a position detection unit detecting position information of the lawn mower on a movement path of the lawn mower; a lawn mowing unit processing a lawn according to any one of a plurality of lawn processing patterns which corresponds to each position on the movement path while the lawn mower moves along the movement path; and a control unit analyzing the image received from the image input unit, determining a lawn processing pattern, which corresponds to the position information detected by the position detection unit, to express the image in the lawn area and controlling the lawn mowing unit according to the determined lawn processing pattern and independently of the movement path. | 06-21-2012 |
Hakyoung Kim, Seoul KR
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20130078129 | SCROLL COMPRESSOR - The present disclosure relates to a scroll compressor. According to the present disclosure, in a shaft penetration scroll compressor in which an eccentric portion of the rotation shaft is overlapped with a orbiting wrap of the orbiting scroll in a radial direction, a back pressure chamber formed at a rear surface of the orbiting scroll may be eccentrically formed from the circular center around a discharge port to correspond to the eccentric discharge port, thereby effectively preventing tilting of the orbiting scroll due to the eccentricity of a gas force generated while the discharge port is eccentrically formed. | 03-28-2013 |
20130078130 | SCROLL COMPRESSOR - The present disclosure relates to a scroll compressor. According to the present disclosure, an oldham ring for preventing the rotation movement of a orbiting scroll may be fabricated by sintering metal powder to have a yield stress above 300 MPa, and thus even when a gas force is eccentrically generated it may be possible to prevent the oldham ring supporting the circular movement of the orbiting scroll from being damaged due to this, thereby enhancing the compressor performance. | 03-28-2013 |
20130089449 | SCROLL COMPRESSOR WITH BYPASS HOLE - A scroll compressor is provided. The scroll compressor may include a fixed scroll having a fixed wrap with a thickness that varies along a compression path and a disk having a discharge and at least one bypass hole formed therein, and an orbiting scroll having an orbiting wrap with a thickness that varies along the compression path and that orbits with respect to the fixed scroll to define a compression space between the respective wraps. The compressor may also include a rotation shaft coupled to the orbiting scroll, and a driver that rotates the rotation shaft. A diameter of each bypass hole may be greater than one third of an effective diameter of the discharge hole. | 04-11-2013 |
20130115123 | SCROLL COMPRESSOR - A scroll compressor may include a blocking portion provided in a fixed component thereof, and positioned adjacent to a discharge hole formed in an orbiting scroll of the compressor. The blocking portion may temporarily obscure the discharge hole upon initiation of a discharging operation, thereby preventing refrigerant discharged into a discharging space from flowing back into a compression chamber, without the use of a separate check valve. Such a blocking portion may prevent an increase in overall compressor noise due to noise typically generated by a check valve. Such a blocking portion may also prevent degradation in compressor reliability levels due to valve damage and increases in fabricating costs due to the addition of the valve. | 05-09-2013 |
Hakyoung Kim, Bucheon-Si KR
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20160035610 | ELECTROSTATIC CHUCK ASSEMBLIES HAVING RECESSED SUPPORT SURFACES, SEMICONDUCTOR FABRICATING APPARATUSES HAVING THE SAME, AND PLASMA TREATMENT METHODS USING THE SAME - An electrostatic chuck apparatus includes a base and a dielectric layer on the base. The dielectric layer includes a support surface opposite the base and a clamping electrode laterally extending along the support surface. The clamping electrode extends beyond an edge of the support surface such that the support surface is laterally recessed relative to the clamping electrode. The clamping electrode is configured to attract a substrate to the support surface by electrostatic force, and laterally extends along the support surface up to or beyond an edge of the substrate. Related electrostatic chuck assemblies, semiconductor fabricating apparatuses having the same, and plasma treatment methods using the same are also discussed. | 02-04-2016 |
Hakyoung Lee, Incheon KR
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20150069350 | ORGANIC ELECTRONIC ELEMENT INCLUDING LIGHT EFFICIENCY IMPROVING LAYER, ELECTRONIC DEVICE INCLUDING THE SAME, AND COMPOUND FOR THE SAME - An organic electronic element includes a first electrode, a second electrode, one or more organic layers formed between the first electrode and the second electrode, and a light efficiency improving layer formed on at least one of an upper side and a lower side of the first electrode and the second electrode, opposite to the side on which the organic layers are formed, wherein the light efficiency improving layer includes a compound represented by Chemical Formula 1. An electronic device includes a display device including the organic electronic element and a controller for driving the display device. | 03-12-2015 |