Lee, Buk-Gu
Byeongha Lee, Buk-Gu KR
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20120194661 | ENDSCOPIC SPECTRAL DOMAIN OPTICAL COHERENCE TOMOGRAPHY SYSTEM BASED ON OPTICAL COHERENT FIBER BUNDLE - The present invention relates to a spectral domain optical coherence tomography apparatus having an endoscopic small-sized probe, and more particularly, to a technology imaging an external shape or an internal structure of a sample by a non-contact and non-invasive method by applying an optical coherent fiber bundle probe attached with a lens to Michelson interferometer or a Fizeau interferometer. | 08-02-2012 |
Byeong Ha Lee, Buk-Gu KR
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20090202202 | FIBER LENS WITH FRESNEL ZONE PLATE LENS AND METHOD FOR PRODUCING THE SAME - A Fresnel lens-integrated optical fiber that can be easily aligned and manufactured in miniature, and a method of fabricating the same are provided. The Fresnel lens-integrated optical fiber includes a light transmission section transmitting incident light, a light expansion section coupled to the light transmission section and expanding light provided from the light transmission section, and a Fresnel lens surface formed on a section of the light expansion section and focusing by passing through the light expanded in the light expansion section at a predetermined focal length. Accordingly, since the Fresnel lens surface has no curvature, arrangement of an optical coupling system is easy, manufacture is easy, and the optical coupling system can be miniaturized. | 08-13-2009 |
Byung Cheol Lee, Buk-Gu KR
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20080261077 | Paste composition, display device including the same, and associated methods - A paste composition for an electrode includes a conductive material, a colored glass frit, the glass frit exhibiting a blackness (L*) value of about 85 or less, a binder, and a solvent. | 10-23-2008 |
Chabum Lee, Buk-Gu KR
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20120314220 | METHOD AND DEVICE FOR MEASURING MOTION ERROR OF LINEAR STAGE - Measurement of motion errors of a linear stage is performed to enable accurate measurement of motion errors in linear directions and a rotational direction in the linear stage using a diffraction grating. A first beam splitter splits a laser beam emitted from a light emitting unit. A first measurement unit measures a unidirectional linear motion error of the linear stage using one laser beam component split by the first beam splitter and a second measurement unit measures an angular motion error and another unidirectional linear motion of the linear stage error using a diffracted beam component obtained by diffracting another laser beam component split by the first beam splitter through the diffraction grating. A third measurement unit circularly polarizes the beam component diffracted through the diffraction grating to measure a third unidirectional linear motion error of the linear stage. | 12-13-2012 |
Cha Bum Lee, Buk-Gu KR
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20130088430 | ULTRA THIN LIGHT SCANNING APPARATUS FOR PORTABLE INFORMATION DEVICE - Disclosed is an ultra thin optical scanning device for a portable information device, which includes an LED as a light source and totally reflects light from an object-side surface to form an image, thereby increasing a contrast ratio of the image and improving the resolution thereof. The ultra thin optical scanning device includes a light emitting device that emits light for sensing an object, an object-side surface contacting the object and totally reflecting the light emitted from the light emitting device, an image formation part collecting the light totally reflected by the object-side surface, and transmitting the light, and a light receiver part forming an image by using the light transmitted by the image formation part. | 04-11-2013 |
Chang Youn Lee, Buk-Gu KR
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20120282426 | RESISTANCE HEATED SAPPHIRE SINGLE CRYSTAL INGOT GROWER, METHOD OF MANUFACTURING RESISTANCE HEATED SAPPHIRE SNGLE CRYSTAL INGOT, SAPPHIRE SNGLE CRYSTAL INGOT, AND SAPPHIRE WAFER - Provided are a resistance heated sapphire single crystal ingot grower, a method of manufacturing a resistance heated sapphire single crystal ingot, a sapphire single crystal ingot, and a sapphire wafer. The resistance heated sapphire single crystal ingot grower comprises according to an embodiment includes a chamber, a crucible included in the chamber and containing an alumina melt, and a resistance heating heater included inside the chamber and heating the crucible. | 11-08-2012 |
Chilwoo Lee, Buk-Gu KR
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20140297806 | MACHINE TO MACHINE SYSTEM, METHOD AND SERVER USING SOCIAL NETWORK SERVICE - The present disclosure relates to a machine to machine (M2M) system, method and server using a Social Network Service (SNS). The M2M communication server receives control information of a first M2M apparatus from a second M2M apparatus that receives the control information through an SNS interface, converts the control information into a command that is recognizable by the first M2M apparatus, and transmits the command to the first M2M apparatus such that the second M2M apparatus receives information corresponding to the command. Accordingly, a human, as a user, communicates with an M2M apparatus, easily controls the M2M apparatus, and acquires information by use of a Social Network Service (SNS) interface that is familiar to the human. | 10-02-2014 |
Dong Seon Lee, Buk-Gu KR
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20130285012 | LIGHT EMITTING DIODE AND METHOD OF MANUFACTURING THE SAME - The present disclosure provides a light emitting diode and a method of manufacturing the same. The light emitting diode includes a graphene layer on a second conductive semiconductor layer and a plurality of metal nanoparticles formed on some region of the graphene layer, whereby adhesion between the second conductive semiconductor layer comprised of an inorganic material and the graphene layer is enhanced, thereby securing stability and reliability of the light emitting diode. In addition, the light emitting diode allows uniform spreading of electric current, thereby allowing stable emission of light through a surface area of the light emitting diode. The method of manufacturing a light emitting diode includes forming a graphene layer on a second conductive semiconductor layer, forming a mask film on the graphene layer, forming a metal layer within the patterns of the mask film, followed by removing the mask film; and heat treating the metal layer to form a plurality of metal nanoparticles, whereby the metal nanoparticles having a high index of refraction are formed on some region of the graphene layer and provide surface texturing effects, thereby improving light emission efficiency. | 10-31-2013 |
Guee-Sang Lee, Buk-Gu KR
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20090056524 | METHOD FOR REMOVING THE STAFF LINES FROM A MUSIC SCORE IMAGE - Disclosed is a method of removing staff lines from a music score an image. The method includes detecting a region with staff lines in an image including a music score; checking a gradient of the staff lines, and dividing the staff lines extending continuously in a longitudinal direction into a plurality of regions in consideration of the gradient, estimating each of the staff lines included in the divided regions by analyzing a histogram of the image, extracting each of the staff lines from the music score on the basis of the estimated staff lines and removing each of the extracted lines of the staff lines from the music score. | 03-05-2009 |
20090202106 | METHOD FOR RECOGNIZING MUSIC SCORE IMAGE WITH AUTOMATIC ACCOMPANIMENT IN MOBILE DEVICE - A method for recognizing a music score included in an image and various information included in the music score, which may be obtained through a camera provided in a mobile terminal without requiring a separate editing program. The method includes detecting a region with staff lines from the image including the music score; detecting a region with an accompaniment chord from the image by taking the region with the staff lines and a region with a musical note into consideration; extracting and removing the staff lines from the music score included in the image; recognizing the musical note by extracting the musical note from the image, from which the staff lines have been removed; recognizing the accompaniment chord by extracting the accompaniment chord from the image, from which the staff lines have been removed; and generating data for reproducing a sound source corresponding to the musical note and accompaniment chord. | 08-13-2009 |
20100202690 | METHOD FOR RECOGNIZING TEXT FROM IMAGE - Disclosed is a method of recognizing a text from an image. The method includes dividing the image into a predefined number of regions through a clustering technique; setting a certain area of the regions as a background region; identifying the outer peripheral pixel and inner peripheral pixel of each region except for the background region of the divided regions; setting a region identified as having one of its outer peripheral pixel and its inner peripheral pixel corresponding to a pixel of the background region, as a boundary region; and setting a region identified as having any of its outer peripheral pixel and its inner peripheral pixel not corresponding to a pixel of the background region, as a center text region, and excluding the boundary region from a binary-coding object of the text. | 08-12-2010 |
20100208999 | METHOD OF COMPENSATING FOR DISTORTION IN TEXT RECOGNITION - A method of compensating for distortion in text recognition is provided, which includes extracting a text region from an image; estimating the form of an upper end of the extracted text region; estimating the form of a lower end of the extracted text region; estimating the form of left and right sides of the extracted text region; estimating a diagram constituted in the form of the estimated upper end, lower end, left and right sides, and including a minimum area of the text region; and transforming the text region constituting the estimated diagram into a rectangular diagram using an affine transform. | 08-19-2010 |
Gwisoo Lee, Buk-Gu KR
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20080216529 | CONVERTIBLE DOOR LOCK DEVICE - The present invention relates to a convertible door lock device with a removable supporting pipe, which guarantees compatibility in construction according to a type of a door, being capable of selectively employing a movement preventing structure implemented by a supporting pipe according to the door type. The door lock device according to the embodiment of the present invention comprises the supporting pipe constituted by a pipe body including a fastening hole therein and a head part formed at one end of the pipe body, and a seating recess formed on an inner surface of the outer bracket for selective insertion of the head part of the supporting pipe. The head part of the supporting pipe is inserted in the seating recess of the outer bracket and the pipe body is inserted in a supporting hole dedicatedly formed on the door at a position outer than the mounting hole to be bolt-connected at the inside of the door through the fastening hole. | 09-11-2008 |
Heung-No Lee, Buk-Gu KR
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20130036084 | METHOD AND APPARATUS FOR TRANSMITTING SPARSE SIGNAL, AND METHOD AND APPARATUS FOR RECOVERING SPARSE SIGNAL VIA BELIEF PROPAGATION AND BAYESIAN HYPOTHESIS TEST - Disclosed are a method and an apparatus for transmitting a sparse signal, and a method and an apparatus for recovering the sparse signal. The method for recovering a sparse signal by using a sparse signal recovering device that recovers a target signal from a received signal includes receiving a measurement signal with a noise signal from a sparse signal transmitting device which scans a target signal based on a measurement matrix, performing a mutual update procedure in which a likelihood probability is calculated by using a posterior probability of the target signal based on a relation between the target signal and the measurement signal, and the posterior probability is updated by using the likelihood probability, and recovering the target signal by performing maximum a posterior estimation for a final posterior probability output through the mutual update procedure. | 02-07-2013 |
20140022548 | METHOD AND APPARATUS FOR PROCESSING OPTICAL SIGNAL OF SPECTROMETER USING SPARSE NATURE OF SIGNALS - An apparatus for processing an optical signal of a spectrometer using sparse nature of a signal spectrum is provided including an optical filter array configured to filter an incident light, an optical sensor array configured to convert the filtered light into charges and a digital signal processing unit configured to perform a digital signal processing on an output from the optical sensor array on the basis of an L1 norm minimization algorithm using sparse nature of a signal spectrum and recover spectrum information of the incident light. | 01-23-2014 |
Hong Seok Lee, Buk-Gu KR
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20120256165 | SINGLE-QUANTUM DOT DEVICE AND METHOD OF MANUFACTURING THE SAME - The present disclosure provides a single-quantum dot device and a method of manufacturing the same. A transparent dielectric thin film is formed on a cover layer and an energy band of quantum dots is adjusted based on compressive stress due to difference in coefficient of thermal expansion therebetween. Specifically, the dielectric thin film has a lower coefficient of thermal expansion than the cover layer and compressive stress is applied to the cover layer by radiation of laser beams. Then, the quantum dots undergo compressive stress and the energy band of the quantum dots increases with increasing intensity of the laser beams. | 10-11-2012 |
Hyeong Mook Lee, Buk-Gu KR
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20120304128 | THREE-DIMENSIONAL MENU SYSTEM USING MANUAL OPERATION TOOLS - Disclosed is an augmented reality-based three-dimensional menu system using manual operation tools. According to the present invention, the three-dimensional menu system comprises: a display device; at least one pair of manual operation tools which are manually operated by the user, and are in a hexahedral shape; an image acquisition device which acquires images for the manual operation tools; and a menu augmentation unit which tracks the manual operation tools from the acquired images, and augments menu items in the vicinity of the manual operation tools of the acquired images, thereby outputting the augmented menu items to the display device. | 11-29-2012 |
Jae-Suk Lee, Buk-Gu KR
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20090259017 | TERPHENYL DIHYDROXY MONOMERS CONTAINING FLUORINE AND FLUORINATED POLY(ARYLENE ETHER SULFIDE)S - The present invention relates to terphenyl dihydroxy monomers containing fluorine and fluorinated poly(arylene ether sulfide)s prepared by using the monomers, more particularly, terphenyl dihydroxy monomers containing both two hydroxy functional groups and fluorine and fluorinated poly(arylene ether sulfide)s prepared by an aromatic nucleophilic substitution polymerization (S | 10-15-2009 |
20130102740 | SULFONATED POLY(ARYLENE ETHER) COPOLYMER HAVING A CROSS-LINKABLE STRUCTURE, AND POLYELECTROLYTE MEMBRANE COMPRISING SAME - Provided are a sulfonated poly(arylene ether) copolymer including a crosslinking structure and a polyelectrolyte membrane including the same. Particularly, a sulfonated poly(arylene ether) copolymer including a crosslinking structure in a polymer chain or at the terminal portion of the polymer chain, and a polyelectrolyte membrane including the same are provided. The polyelectrolyte membrane using the sulfonated poly(arylene ether) copolymer including the crosslinking structure, may have the same or better degree of a thermal stability, a mechanical stability, a chemical stability, a membrane forming capability, etc. than a commonly used polyelectrolyte membrane. In addition, the proton conductivity and the cell performance of the polyelectrolyte membrane may be remarkably improved than those of the commonly used polymer electrolyte. Further, the properties of the electrolyte membrane may be rarely changed, and a high measuring stability may be obtainable. The polyelectrolyte membrane may be used in a fuel cell or a secondary battery. | 04-25-2013 |
Jeehoon Lee, Buk-Gu KR
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20120140926 | METHOD FOR KEY UPDATE BASED ON THE AMOUNT OF COMMUNICATION IN WIRELESS SENSOR NETWORKS HAVING HIERARCHY STRUCTURE - The present invention relates to a key update method based on the amount of communication in wireless sensor networks having a hierarchy structure. | 06-07-2012 |
Jeong-Bong Lee, Buk-Gu KR
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20120120047 | Method of Supplying Power, Power Supply Apparatus for Performing the Method and Display Apparatus Having the Power Supply Apparatus - A power supply apparatus includes a storage battery, a power part and a solar battery part. The storage battery provides a charged voltage to an electronic device. The power part provides an external voltage to the electronic device and simultaneously charges the storage battery, upon determining that the external voltage is provided to the power supply apparatus. The solar battery part charges the storage battery using a voltage output by a solar battery upon determining that the external voltage is not provided to the power supply apparatus and the electronic device is not in use, and provides the voltage output by the solar battery and the charged voltage output by the storage battery to the electronic device, upon determining that the external voltage is not provided to the power supply apparatus and the electronic device is in use. | 05-17-2012 |
Ji-Hoon Lee, Buk-Gu KR
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20090155876 | Biological production method of photoconductive arsenic-sulfide (As-S) nanotube and strain used for the same - Disclosed is a biological method for preparing arsenic sulfide (As—S) compounds. More particularly, the present invention provides a method for production of nanotubes based on As—S compounds including As | 06-18-2009 |
Jongho Lee, Buk-Gu KR
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20140144480 | STRETCHABLE SUBSTRATE, STRETCHABLE PHOTOVOLTAIC APPARATUS, AND STRETCHABLE DEVICE - A stretchable photovoltaic apparatus according to the present invention includes: a stretchable substrate including islands protruded from a base such that the islands are separated by a trench, and a notch formed in an edge of each of the islands; a photovoltaic cell mounted on the stretchable substrate; and an interconnector of which at least a portion is positioned inside the notch, the interconnector electrically connecting the neighboring photovoltaic cells in one pair. According to the present invention, a semiconductor device may be configured in the form of a stretchable array. Therefore, the present invention is expected to be applied to various industrial fields such as a solar cell field, a display field, a semiconductor device field, a medical field, a clothing field, a measurement field, and a filming field. | 05-29-2014 |
Jong-Hyun Lee, Buk-Gu KR
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20120136251 | PROBE AND DEVICE FOR DETECTING ABNORMALITY OF INTERVERTEBRAL DISC - The present invention relates to a probe and a device for detecting abnormality of an intervertebral disc. More particularly, the present invention relates to a probe and a device for detecting abnormality of an intervertebral disc that gives vibration stimulation to the inner part of the intervertebral disc and obtains an ultrasonic image in order to sense the abnormality of the intervertebral disc causing discogenic pains and inspects whether the intervertebral disc is abnormal by measuring impedance in the intervertebral disc. | 05-31-2012 |
Jongsoo Lee, Buk-Gu KR
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20130135060 | ANTENNA TUNER AND METHOD FOR ADJUSTING ANTENNA IMPEDANCE - Disclosed are an antenna tuner and a method for adjusting antenna impedance. The antenna tuner includes a reference impedance resistor, a first coupler having an isolated port connected to one end of the reference impedance resistor, a second coupler having an input port connected to an output port of the first coupler and an output port connected to the antenna, and an impedance adjusting device group connected to the second coupler to adjust impedance of the antenna. An impedance controller generates an impedance adjustment control signal according to a first voltage applied to a coupled port of the first coupler, and a second voltage applied to a coupled port of the second coupler to provide the impedance adjustment control signal to the impedance adjusting device group. | 05-30-2013 |
Jong Soo Lee, Buk-Gu KR
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20120286876 | MULTI-BAND POWER AMPLIFIER - Disclosed is a multi-band power amplifier capable of operating at multiple frequency bands. The multi-band power amplifier includes: a power amplification unit which amplifies an input signal; a matching network circuit which provides impedance matching between the power amplification unit and a load; and an auxiliary amplification unit which additionally supplies a certain magnitude of electric current to the load. | 11-15-2012 |
20120293249 | POWER AMPLIFIER INSENSITIVE TO LOAD IMPEDANCE CHANGES - Disclosed herein is a power amplifier insensitive to load impedance changes. According to the present invention, the power amplifier comprises a power amplification circuit which amplifies an input signal, an output matching circuit connected to an output terminal of the power amplification circuit to perform impedance matching between the power amplification circuit and an antenna load, and a 4-port coupler connected between the output matching circuit and the antenna load. | 11-22-2012 |
Jung Hwa Lee, Buk-Gu KR
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20090136461 | Neuronal differentiation method of adult stem cells using small molecules - The present invention relates to a neuronal differentiation method of adult stem cells using small molecules, more particularly to a method for inducing differentiation of adult stem cells into nerve cells using small molecules, which enables effective differentiation into nerve cells and, thus, is useful in treating intractable CNS disorders such as Parkinson's disease, dementia, Alzheimer's disease and spinal cord injury. | 05-28-2009 |
Junyeob Lee, Buk-Gu KR
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20100079692 | Liquid crystal display and fabricating method thereof - The present disclosure relates to the liquid crystal display device and the fabricating method thereof. The liquid crystal display device comprises: a first substrate including a ground line supplied with a ground voltage, and an extended ground line extending from the ground line, and attaching a first polarization plate; a second substrate joining to the first substrate with a sealant and attaching a second polariazation plate; and a conductive upper-lower substrate connecting static electricity discharging path connecting to the extended ground line by forming at edges of the first polarization plate and the second polariazation plate, and by intruding between the first and the second substrates. | 04-01-2010 |
Kwanghee Lee, Buk-Gu KR
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20110175064 | Light emitting device and method of fabricating the same - A light emitting device may include a first electrode on a substrate, a first emission layer on the first electrode, a buffer layer on the first emission layer, a middle electrode on the buffer layer, a second emission layer on the middle electrode, and a second electrode on the second emission layer. The buffer layer may include a material selected from the group consisting of a metal oxide, a polyelectrolyte, and a combination thereof. The first emission layer, buffer layer, middle electrode, and second emission layer may be fabricated using a wet process. | 07-21-2011 |
Kwan-Soo Lee, Buk-Gu KR
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20090259017 | TERPHENYL DIHYDROXY MONOMERS CONTAINING FLUORINE AND FLUORINATED POLY(ARYLENE ETHER SULFIDE)S - The present invention relates to terphenyl dihydroxy monomers containing fluorine and fluorinated poly(arylene ether sulfide)s prepared by using the monomers, more particularly, terphenyl dihydroxy monomers containing both two hydroxy functional groups and fluorine and fluorinated poly(arylene ether sulfide)s prepared by an aromatic nucleophilic substitution polymerization (S | 10-15-2009 |
Saewoom Lee, Buk-Gu KR
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20120140926 | METHOD FOR KEY UPDATE BASED ON THE AMOUNT OF COMMUNICATION IN WIRELESS SENSOR NETWORKS HAVING HIERARCHY STRUCTURE - The present invention relates to a key update method based on the amount of communication in wireless sensor networks having a hierarchy structure. | 06-07-2012 |
Seokhee Lee, Buk-Gu KR
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20130153552 | SCRIBING APPARATUS AND METHOD FOR HAVING ANALYSIS FUNCTION OF MATERIAL DISTRIBUTION - A scribing apparatus having a function to analyze distribution of a material forming a semiconductor or solar cell in real-time in a process producing the semiconductor or solar cell of is disclosed. The scribing apparatus having the analysis function of material distribution comprises: a laser irradiation unit, which conducts scribing by irradiating laser to a position to be scribed of an analysis subject; a spectrum detection optical unit, which detects a spectrum generated from plasma, which is produced by the irradiated laser; a spectrum information storage, which stores spectrum state information of each material forming the analysis subject; and a spectrum analysis unit, which analyzes distribution state information of the material by comparing the spectrum state information and the detected spectrum. | 06-20-2013 |
20130155404 | SYSTEM FOR REAL-TIME ANALYSIS OF MATERIAL DISTRIBUTION IN CIGS THIN FILM USING LASER-INDUCED BREAKDOWN SPECTROSCOPY - The present invention relates to a process control system which can measure the physical properties of a CIGS thin film in real-time in a continuous production line of a CIGS thin film solar cell, more specifically to a system for real-time analysis of material distribution of a CIGS thin film comprising: a header, which comprises a laser irradiation unit producing plasma from the CIGS thin film by irradiating a laser beam to a part of the CIGS thin film; and a spectrum detection optical unit detecting a spectrum generated from the plasma; a transfer unit, which transfers the header at the same rate and to the direction with the transfer rate and direction of the CIGS thin film; and a spectrum analysis unit, which analyzes the spectrum detected by the spectrum detection optical unit. | 06-20-2013 |
20130158698 | FABRICATION SYSTEM OF CIGS THIN FILM SOLAR CELL EQUIPPED WITH REAL-TIME ANALYSIS FACILITIES FOR PROFILING THE ELEMENTAL COMPONENTS OF CIGS THIN FILM USING LASER-INDUCED BREAKDOWN SPECTROSCOPY - The present invention relatives to a fabrication processing system of CIGS thin film solar cell, more particularly to a fabrication processing system CIGS of thin film solar cell equipped with real-time analysis facilities for profiling the elemental components of CIGS thin film using laser-induced breakdown spectroscopy. | 06-20-2013 |
Seok Hee Lee, Buk-Gu KR
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20130050062 | APPARATUS AND METHOD FOR IMPLEMENTING HAPTIC-BASED NETWORKED VIRTUAL ENVIRONMENT WHICH SUPPORTS HIGH-RESOLUTION TILED DISPLAY - An apparatus and method of implementing haptic-based networked virtual environments supporting high-resolution tiled displays. A haptic rendering process of detecting collision between a user of a haptic-device over a virtual environment and each of at least one virtual object and providing a physical force corresponding to a detection result to the haptic-device is performed, and a graphic rendering process of converting each virtual object represented as 3-D data into an object stream represented as 2-D data such that each virtual object is displayed as a 2-D image, and assigning a priority and a frame rate to each converted object stream according to a preset assignment criterion is performed. A plurality of displays provide a display image, including object streams of the virtual objects and background pixels, so that a virtual environment allowing the user of the haptic-device to visually and tactilely immerse thereto is effectively realized by utilizing limited resources. | 02-28-2013 |
Sun-Kyu Lee, Buk-Gu KR
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20120314220 | METHOD AND DEVICE FOR MEASURING MOTION ERROR OF LINEAR STAGE - Measurement of motion errors of a linear stage is performed to enable accurate measurement of motion errors in linear directions and a rotational direction in the linear stage using a diffraction grating. A first beam splitter splits a laser beam emitted from a light emitting unit. A first measurement unit measures a unidirectional linear motion error of the linear stage using one laser beam component split by the first beam splitter and a second measurement unit measures an angular motion error and another unidirectional linear motion of the linear stage error using a diffracted beam component obtained by diffracting another laser beam component split by the first beam splitter through the diffraction grating. A third measurement unit circularly polarizes the beam component diffracted through the diffraction grating to measure a third unidirectional linear motion error of the linear stage. | 12-13-2012 |
20130064265 | SENSOR FOR MEASURING AMOUNT OF HEAT GENERATED FROM CELLS USING ZWEIFACH-FUNG EFFECT AND METHOD FOR MANUFACTURING THE SAME - A sensor for measuring heat generated from cells, including a thermopile manufactured by surface-micromachining technology, and a microfluidic flow-channel structure for mixing cells with medium and dividing the mixture into cells and medium. Medium and cells are uniformly mixed using a micro-mixer. The mixture is separated into a medium microfluid and a cell microfluid using the Zweifach-Fung effect, after which signals measured in the two microfluids are amplified. The difference between the two signal values determines the amount of heat generated from the cells. The influence of noise caused by a change in external environment is eliminated. Convection heat dissipation caused by fluid flow is minimized. The sensor accurately measures the amount of heat generated from cells flowing in the microfluidic flow-channel. Diseases such as cancer are diagnosed using the difference between the measured amount of heat generated from cells and the standard amount of heat generated from normal cells. | 03-14-2013 |
20130088430 | ULTRA THIN LIGHT SCANNING APPARATUS FOR PORTABLE INFORMATION DEVICE - Disclosed is an ultra thin optical scanning device for a portable information device, which includes an LED as a light source and totally reflects light from an object-side surface to form an image, thereby increasing a contrast ratio of the image and improving the resolution thereof. The ultra thin optical scanning device includes a light emitting device that emits light for sensing an object, an object-side surface contacting the object and totally reflecting the light emitted from the light emitting device, an image formation part collecting the light totally reflected by the object-side surface, and transmitting the light, and a light receiver part forming an image by using the light transmitted by the image formation part. | 04-11-2013 |
Sup Joo Lee, Buk-Gu KR
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20100036065 | Maleimide-alpha-alkylstyrene-based tetrapolymer with low molten viscosity and continuous bulk process for producing it - Disclosed are a maleimide-α-alkylstyrene-based, heat-resistant bulk tetrapolymer and a preparation process thereof. More specifically, disclosed are a bulk tetrapolymer, comprising 5-60 wt % of an N-substituted maleimide monomer, 10-70 wt % of an α-alkylstyrene monomer, 5-50 wt % of an unsaturated nitrile monomer and 3-50 wt % of an aromatic vinyl monomer, as well as a continuous bulk polymerization process for preparing the same. The disclosed bulk tetrapolymer has a weight-average molecular weight (Mw) of 70,000-300,000 and a glass transition temperature of 150-200° C., shows excellent high-temperature thermal stability and heat resistance and a remarkably low melt viscosity, and thus is excellent not only in processability, but also in productivity, processability, moldability and blendability, when it is blended with other resins. Also, the continuous bulk polymerization process is equipped with a devolatilizer and enables the bulk tetrapolymer to be produced at low cost and high efficiency. | 02-11-2010 |
20100240851 | MALEIMIDE-ALPHA-ALKYLSTYRENE-BASED TERPOLYMER WITH LOW MOLTEN VISCOSITY AND CONTINUOUS BULK PROCESS FOR PRODUCING IT - Disclosed are a maleimide-α-alkylstyrene-based, heat-resistant bulk terpolymer and a preparation process thereof. More specifically, disclosed are a bulk terpolymer, comprising 5-60 wt % of an N-substituted maleimide monomer, 10-70 wt % of an α-alkylstyrene monomer and 5-50 wt % of an unsaturated nitrile monomer, as well as a continuous bulk polymerization process for preparing the same. The disclosed bulk terpolymer has a weight-average molecular weight (Mw) of 70,000-300,000 and a glass transition temperature of 140-200° C., shows excellent high-temperature thermal stability and heat resistance and a remarkably low melt viscosity, and thus is excellent not only in processability, but also in productivity, processability, moldability and blendability, when it is blended with other resins. Also, the continuous bulk polymerization process is equipped with a devolatilizer and enables the bulk terpolymer to be produced at low cost and high efficiency. | 09-23-2010 |
Woong Bi Lee, Buk-Gu KR
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20140022548 | METHOD AND APPARATUS FOR PROCESSING OPTICAL SIGNAL OF SPECTROMETER USING SPARSE NATURE OF SIGNALS - An apparatus for processing an optical signal of a spectrometer using sparse nature of a signal spectrum is provided including an optical filter array configured to filter an incident light, an optical sensor array configured to convert the filtered light into charges and a digital signal processing unit configured to perform a digital signal processing on an output from the optical sensor array on the basis of an L1 norm minimization algorithm using sparse nature of a signal spectrum and recover spectrum information of the incident light. | 01-23-2014 |
Yeung Lak Lee, Buk-Gu KR
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20130215494 | BURST OSCILLATION METHOD IN LASER SYSTEM AND APPARATUS FOR SAME - Disclosed is a burst mode oscillation method for burst mode oscillation by controlling the peak output of light pulses in a laser system. The burst mode oscillation apparatus includes a seed beam generator which receives electrical input signals having different pulse widths, modulates pulse widths and amplitudes of outputs in output light according to the received electrical input signals, and outputs the modulated pulse light, an amplifier which amplifies the modulated pulse light and outputs amplified pulse light, and a non-linear wavelength converter which can control wavelength-converted output light according to the amplitudes of the peak output changed through the pulse widths of the amplified pulse light. | 08-22-2013 |
Yong Tak Lee, Buk-Gu KR
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20130078750 | FABRICATING METHOD OF NANO STRUCTURE FOR ANTIREFLECTION AND FABRICATING METHOD OF PHOTO DEVICE INTEGRATED WITH ANTIREFLECTION NANO STRUCTURE - A method of fabricating nanostructure for antireflection and a method of fabricating a photo device integrated with the nanostructure for antireflection are provided. The fabrication of the nanostructure for antireflection includes coating a solution containing a combination of metal ions with organic or inorganic ions on a substrate, sintering the coated solution using an annealing process to grow nanoscale metal particles, and chemically etching the substrate using the metal particles as mask or accelerator to form a subwavelength nanostructure on the surface of the substrate, thereby manufacturing the nanostructure for antireflection without an apparatus requiring a vacuum state using a simple method for a short amount of time to minimize reflection of light at an interface between a semiconductor material and the air, and producing a photo device having good luminous efficiency and performance at low cost in large quantities by applying it to the photo device. | 03-28-2013 |
20130087194 | SILICON MULTILAYER ANTI-REFLECTIVE FILM WITH GRADUALLY VARYING REFRACTIVE INDEX AND MANUFACTURING METHOD THEREFOR, AND SOLAR CELL HAVING SAME AND MANUFACTURING METHOD THEREFOR - The present invention relates to a silicon multilayer anti-reflective film with a gradually varying refractive index and a manufacturing method therefor, and a solar cell having the same and a manufacturing method therefor, wherein: the refractive index of a silicon thin film is adjusted by depositing silicon on a semiconductor or glass substrate with a slight tilt; and an anti-reflective film with a gradually varying refractive index is implemented using a silicon multi-layer film in which multi-layer film are stacked with different tilt angles. In addition, the silicon multilayer anti-reflective film according to the present invention is applied to a silicon solar cell, thereby suppressing reflection in the inside of the solar cell and providing an excellent heat radiation characteristic using a high heat transfer coefficient. | 04-11-2013 |
20130128362 | MICRO/NANO COMBINED STRUCTURE, MANUFACTURING METHOD OF MICRO/NANO COMBINED STRUCTURE, AND MANUFACTURING METHOD OF AN OPTICAL DEVICE HAVING A MICRO/NANO COMBINED STRUCTURE INTEGRATED THEREWITH - A micro/nano combined structure, a manufacturing method of a micro/nano combined structure, and a manufacturing method of an optical device having a micro/nano combined structure integrated therewith, the method comprising: forming a micro structure on a substrate; depositing a metal thin film on the substrate on which the micro structure is formed; heat treating and transforming the metal thin film into metal particles; and using the metal particles as a mask to form a non-reflective nanostructure having a frequency below that of light wavelengths and a sharp wedge-shaped end, on the top surface of the substrate on which the micro structure is formed, and etching the front surface of the substrate on which the micro structure is formed. The manufacturing process is simple, light reflectivity that occurs wherein a difference in refractive indices of air and semiconductor material can be minimized, and is easily applied to the optical device field. | 05-23-2013 |
Youngeun Lee, Buk-Gu KR
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20110273642 | BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY USING THE SAME - A backlight unit and a liquid crystal display using the same are disclosed. The backlight unit includes a plurality of light sources generating light, a light source printed circuit board (PCB) on which the plurality of light sources are mounted, a protrusion that protrudes from one side of the light source PCB and is fastened to a connector used to supply a driving power to the plurality of light sources, and a bottom cover that receives the light source PCB and has a through hole through which the protrusion passes. The connector is exposed to the outside through the through hole. | 11-10-2011 |
Young Jae Lee, Buk-Gu KR
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20110150142 | DISCRETE TIME RECEIVER - A discrete-time receiver includes: a sampling mixer sampling an input signal according to a sampling clock; a discrete-time filter adjusting a decimation rate by using a control signal and filtering the sampled signal by using a filter clock; and a clock generator generating a sampling clock to be supplied to the sampling mixer, and generating the control signal and the filter clock by comparing the frequency of the sampling clock with a pre-set output frequency. Over a broadband input signal, a dynamic range of an output signal can be improved. | 06-23-2011 |
Yun-Je Lee, Buk-Gu KR
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20110150742 | CATALYSTS FOR NOX REDUCTION EMPLOYING H2 AND A METHOD OF REDUCING NOX - Disclosed is a catalyst composition for reducing NOx through two steps including reacting NOx with H2 thus producing ammonia which is then reacted with NOx, instead of direct NOx reduction by H2, and a method of reducing NOx using the catalyst composition. | 06-23-2011 |
20130156669 | CATALYSTS FOR NOX REDUCTION EMPLOYING H2 AND A METHOD OF REDUCING NOX - Disclosed is a catalyst composition for reducing NOx through two steps including reacting NOx with H2 thus producing ammonia which is then reacted with NOx, instead of direct NOx reduction by H2, and a method of reducing NOx using the catalyst composition. | 06-20-2013 |