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Hak Yong
Hak Yong Kwon, Suwon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20090155606 | METHODS OF DEPOSITING A SILICON NITRIDE FILM - Cyclical methods of depositing a silicon nitride film on a substrate are provided. In one embodiment, a method includes supplying a chlorosilane to a reactor in which a substrate is processed; supplying a purge gas to the reactor; and providing ammonia plasma to the reactor. The method allows a silicon nitride film to be formed at a low process temperature and a high deposition rate. The resulting silicon nitride film has a relatively few impurities and a relatively high quality. In addition, a silicon nitride film having good step coverage over features having high aspect ratios and a thin and uniform thickness can be formed. | 06-18-2009 |
| 20090278224 | METHODS OF FORMING AN AMORPHOUS SILICON THIN FILM - A method for forming an amorphous silicon thin film is disclosed. In some embodiments, a method includes loading a substrate into a reaction chamber; and conducting a plurality of deposition cycles on the substrate. Each of at least two of the cycles includes: supplying a silicon precursor to the reaction chamber during a first time period; applying radio frequency power to the reaction chamber at least partly during the first time period; stopping supplying of the silicon precursor and applying of the radio frequency power during a second time period between the first time period and an immediately subsequent deposition cycle; and supplying hydrogen plasma to the reaction chamber during a third time period between the second time period and the immediately subsequent deposition cycle. The method allows formation of an amorphous silicon film having an excellent step-coverage and a low roughness at a relatively low deposition temperature. | 11-12-2009 |
Hak Yong Lee, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20100187207 | LASER PROCESSING APPARATUS AND METHOD USING BEAM SPLIT - Disclosed are a laser processing apparatus and method that can effectively remove a low-k material formed on a wafer. A laser processing apparatus of the invention is a laser processing apparatus that processes a subject on which a low-k material is formed. The laser processing apparatus includes a laser generating unit that emits a laser beam; and an optical system that splits the laser beam emitted from the laser generating unit into two and irradiates the split laser beams onto the subject In this case, the optical system includes a pair of condensing lenses in which cut surfaces that are cut at a predetermined distance from central axes to be parallel to the central axes contact with each other, and the interval between the two split laser beams is the same as the interval between two edges of the low-k material in a removal subject region. According to the invention, after splitting a laser beam into two laser beams and primarily removing the edges of the low-k material in the removal subject region using the laser beams, the remaining low-k material between the edges is removed. As a result, it is possible to improve processing quality. | 07-29-2010 |
Hak Yong Yang, Gimhae KR
| Patent application number | Description | Published |
|---|---|---|
| 20100186395 | APPARATUS FOR COOLING OVERHEATED GAS IN ENGINE ROOM - An apparatus for cooling overheated gas generated from a diesel particulate filter which is connected between a diesel engine and an exhaust pipe of the diesel engine is disclosed. The apparatus includes a tail pipe for discharging outwardly the overheated gas discharged from the diesel particulate filter, a cooling fan, provided at one side of an engine room, for generating an air stream by sucking ambient air, and a diffuser enclosing an outer circumference of the tail pipe in such a way a space is formed between the diffuser and the tail pipe to prevent the diffuser from directly contacting the tail pipe. The engine room is provided with a through-hole penetrating one side of the engine room, and the tail pipe has one end connected to the diesel particulate filter, and the other end extended outwardly from the engine room through the through-hole. | 07-29-2010 |
Hak Yong Yang, Shinchon-Dong KR
| Patent application number | Description | Published |
|---|---|---|
| 20090125198 | APPARATUS AND METHOD FOR CONTROLLING ENGINE REVOLUTIONS FOR EXCAVATOR - An apparatus and method for controlling engine revolutions for an excavator is provided, which can set the excavator not to perform a normal operation so as to induce an operator to check an air cleaner by reducing a flow rate of hydraulic fluid discharged from a hydraulic pump through lowering of the engine revolutions if an operator disregards a warning signal for requiring the operator to check an engine intake system and continues the excavator work even when a predetermined time elapses after transfer of the warning signal or the warning signal is transferred over a predetermined number of times. The apparatus includes an engine and a hydraulic pump, an air cleaner for filtering out foreign substances included in outside air being inhaled into an engine combustion chamber, a pressure sensor, installed in a bypass between the air cleaner and the engine combustion chamber, for detecting pressure of the air in the bypass, and an electronic control unit for outputting a warning signal for requiring an operator to check the air cleaner if the pressure signal exceeds a reference pressure value, and lowering the engine revolutions and reducing the flow rate from the hydraulic pump if the operator disregards the warning signal and continues the excavator work after the transfer of the warning signal. | 05-14-2009 |
Hak Yong Yang, Changwon KR
| Patent application number | Description | Published |
|---|---|---|
| 20080282690 | Rain hat for heavy construction equipment - A rain hat for heavy construction equipment is disclosed, which comprises a plate which corresponds to a shape of an outlet of the exhaust tube; a connection part which is formed at one end of the plate and is extended in a downward direction; and an elastic plate of which one end is connected with the connection part, and the other end is engaged with the exhaust tube, said elastic plate having a certain length, whereby the outlet of the exhaust tube, which is closed by means of the plate, opens as a discharge pressure overcomes an elastic force of the elastic plate when exhaust gas is discharged from the exhaust tube. | 11-20-2008 |
Hak-Yong Kim, Chonrabuk-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20080233284 | Bottom-Up Electrospinning Devices, and Nanofibers Prepared by Using the Same - A conventional electrospinning devices is problematic in that it is unable to mass-produce a nanofiber web and the quality of a produced nanofiber web is poor. To solve the above problem, the present invention provides a bottom-up electrospinning devices, wherein [I] the outlets of nozzles | 09-25-2008 |
| 20090189318 | Bottom-up electrospinning devices, and nanofibers prepared by using the same - A conventional electrospinning devices is problematic in that the productivity is low and a droplet, by which a spinning liquid is not formed into fiber but dropped in a drop shape, occurs, to thereby deteriorate the quality of a nonwoven fabric. To solve the above problem, the present invention provides an bottom-up electrospinning devices, comprising: a spinning liquid main tank | 07-30-2009 |
| 20090189319 | Process of preparing continuous filament composed of nanofibers - Conventional electrospinning was problematic in that it is incapable of making a continuous filament (yarn) by a simple and continuous process. To solve the above problem, there is provided a method for making a continuous filament consisting of nanofibers according to the present invention, wherein a polymer spinning liquid is electrostatically spun to a collector | 07-30-2009 |
| 20090286074 | METHOD OF MANUFACTURING FOR A POROUS MEMBRANE AND THE POROUS MEMBRANCE MANUFACTURED THEREBY - Disclosed are a method of manufacturing a porous membrane and a porous membrane manufactured thereby. A polymer spinning dope in a spinning dope supply container (I) is electrically spun onto a solution (B), which is contained in a collector container ( | 11-19-2009 |
| 20090297651 | NOZZLE BLOCK FOR ELECTROSPINNING - Disclosed is a nozzle block for electrospinning which is able to simultaneously electrically spin two or more different types of polymer spinning dopes, wherein a single-layer distribution plate for dividing a planar space within the nozzle block into two or more segments is installed within the nozzle block. The apparatus is simple because a single-layer distribution plate is installed instead of a conventional multi layer distribution plate. A hybrid nano fiber laminate can be prepared without any additional laminating procedure because two or more different polymer spinning dopes can be simultaneously electrically spun through different nozzles arranged within the same nozzle block. It is possible to prepare a hybrid nano fiber nonwoven fabric or filaments or the like composed of two or more types of nano fibers different in thermal properties or physical properties because their fiber diameter or polymer type are different from each other. | 12-03-2009 |
| 20090305022 | COMPOSITE MATERIAL REINFORCED WITH NANOFIBER AND METHOD OF MANUFACTURING FOR THE SAME - Disclosed are a nano fiber reinforced composite and a method of manufacturing the same. A spinning dope (nano fiber forming spinning dope) having a viscosity capable of fiber formation upon electrospinning and a spinning dope (spinning dope for matrix) having a viscosity incapable of fiber formation upon electrospinning are electrically spun onto the same collector with a high voltage applied thereto through different nozzles of the same nozzle block with a high voltage applied thereto. In the nano fiber reinforced composite, nano fibers are uniformly arranged between matrix components with no fibers formed therein, the nano fibers being arranged at an orientation angle of 90° or less relative to the longitudinal axis of the composite material. The nano fibers used as reinforcing material can be uniformly distributed within matrix components by a single procedure, and the contact area between the nano fibers and the matrix components are very large because the diameter of the nano fibers used as reinforcing material is small. | 12-10-2009 |
Hak-Yong Lee, Suwon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110131368 | METHOD AND APPARATUS FOR MANAGING ERASE COUNT OF MEMORY DEVICE - A non-volatile memory device having a hidden cell located separate from data storage cells, and a method of effectively managing an erase count of the non-volatile memory device. The method includes preparing the non-volatile memory device that includes a hidden cell located separate from data storage cells and is not accessible to users of the data storage cells, and increasing an erase count stored in an erase count storing region of the hidden cell corresponding to at least one erased data storage cell when the at least one data storage cell is erased. | 06-02-2011 |
| 20110297933 | Semiconductor Packages - Provided are a semiconductor package, a semiconductor memory module including the semiconductor package, and a system including the semiconductor memory module. The semiconductor package may include a plurality of main terminals arranged on a surface of the semiconductor package with constant intervals, and the plurality of main terminals may include terminals of a first set including a plurality of input/output terminals to which test signals may be input, and terminals of a second set including a plurality of input/output terminals to/from which signals other than the test signals may be input/output. | 12-08-2011 |