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Lee, Bucheon
Dae-Hwan Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100027294 | OPTICAL SHEET AND METHOD OF MANUFACTURING THE SAME - An optical sheet includes a base film in which light is incident from a lower side, a plurality of prism patterns and a diffusion member. The prism patterns are protruded to be spaced apart from each other on the base film to enhance the front luminance of light incident from the lower side of the base film. The diffusion member is disposed between prism patterns to have a diffusion surface in parallel with the base film. The diffusion member includes a plurality of diffusion dots capable of enhancing the luminance uniformity of light incident from the lower side of the base film. Thus, front luminance and luminance uniformity may be enhanced due to a juxtaposition of the prism patterns and the diffusion portion, and the viewing angle of the LCD device may be enhanced. | 02-04-2010 |
Dong-Sun Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110096951 | VARIABLE DIRECTIONAL MICROPHONE ASSEMBLY AND METHOD OF MAKING THE MICROPHONE ASSEMBLY - A variable directional microphone assembly and method of manufacturing the variable directional microphone assembly which includes a substrate, a semiconductor integrated circuit device, two microphone devices, a microphone body, and a case. | 04-28-2011 |
Don Saeng Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090001899 | Fluorescent Lamp With Built-In Anion Generator - The invention is a a fluorescent lamp with built-in anion generator. The invention includes a bulb | 01-01-2009 |
Eung-Woo Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100327760 | INVERTER DEVICE AND DRIVING METHOD THEREOF - The present invention relates to an inverter and the driving method. The inverter according to exemplary embodiment of the present invention generates a plurality of feedback voltages corresponding to driving voltages of a plurality of discharge lamps. The inverter generates a first minimum voltage having a smaller feedback voltage of a plurality of feedback voltages and compares the first minimum voltage and a short circuit reference voltage in order to determine a short circuit of at least two discharge lamps. The inverter senses a short circuit lamp of a plurality of the discharge lamps by using the comparison result and a first sawtooth wave signal having a predetermined period. Also, the inverter generates a plurality of feedback voltages corresponding to driving currents of a plurality of discharge lamps, generates a second minimum voltage having a smaller feedback voltage of a plurality of the feedback voltages, and compares the second minimum voltage and an open circuit reference voltage in order to determine the open circuit of the at least two discharge lamps. The inverter senses an open circuit lamp of a plurality of discharge lamps by using the comparison result and a first sawtooth wave signal having a predetermined period. | 12-30-2010 |
Hak-Hee Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100079176 | Inverter Driver And Load Driver Including The Same, And Driving Method Thereof - A load driver includes an inverter and an inverter driver. The inverter converts an input voltage into a driving voltage of a discharge lamp using at least one first switch for switching according to a duty ratio, and the inverter driver controls the inverter. The inverter driver controls the duty ratio using a voltage of a capacitor and a control signal having a waveform that is repeated with a predetermined frequency. The capacitor is charged and discharged by a current corresponding to a difference between a feedback voltage corresponding to a current flow to the discharge lamp and a reference voltage. Such inverter driver controls to gradually increase the output voltage of the inverter in the soft start period by setting the voltage of the capacitor as a voltage corresponding to the control signal. | 04-01-2010 |
| 20100327760 | INVERTER DEVICE AND DRIVING METHOD THEREOF - The present invention relates to an inverter and the driving method. The inverter according to exemplary embodiment of the present invention generates a plurality of feedback voltages corresponding to driving voltages of a plurality of discharge lamps. The inverter generates a first minimum voltage having a smaller feedback voltage of a plurality of feedback voltages and compares the first minimum voltage and a short circuit reference voltage in order to determine a short circuit of at least two discharge lamps. The inverter senses a short circuit lamp of a plurality of the discharge lamps by using the comparison result and a first sawtooth wave signal having a predetermined period. Also, the inverter generates a plurality of feedback voltages corresponding to driving currents of a plurality of discharge lamps, generates a second minimum voltage having a smaller feedback voltage of a plurality of the feedback voltages, and compares the second minimum voltage and an open circuit reference voltage in order to determine the open circuit of the at least two discharge lamps. The inverter senses an open circuit lamp of a plurality of discharge lamps by using the comparison result and a first sawtooth wave signal having a predetermined period. | 12-30-2010 |
| 20110037407 | LED LIGHT EMITTING DEVICE - The present invention relates to an LED light emitting device. An LED light emitting device includes a plurality of LED channels including a plurality of LEDs. The LED light emitting device further includes a transformer configured to convert an input voltage and supply an output voltage to the plurality of LED channels, a controller, and an LED driver. The controller controls the transformer according to a first feedback signal for interrupting power supply to the plurality of LED channels when a dimming off state in which currents are not supplied to the plurality of LED channels occurs or when a state in which the maximum channel voltage of a plurality of channel voltages corresponding to voltages applied to the plurality of LED channels, respectively, is an overvoltage and a defective state in which the plurality of LED channels include an open state are maintained during a predetermined threshold period. The LED driver generates information on the dimming off state and information on the defective state. Further, the LED driver is connected to a secondary side of the transformer, the controller is connected to a primary side of the transformer insulated from the secondary side, and the first feedback signal is generated according to the information on the dimming off state and the information on the defective state. | 02-17-2011 |
| 20120104956 | LED EMITTING DEVICE - The present invention relates to an LED emitting device. | 05-03-2012 |
Ji Yong Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100326319 | WHITE RUST INHIBITING COMPOSITION FOR ALUMINUM PARTS - The present invention provides an aluminum white rust inhibiting composition containing alkali metal metasilicate and alkali metal hydroxide as essential components. The composition described by the present invention can provide an anti-corrosion function to vehicle aluminum parts without a separate surface process, thus reducing the manufacturing cost by reducing the number of processes and improving the durability of the vehicle aluminum parts. | 12-30-2010 |
Jongmu Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20120120686 | SWITCH CONTROLLER AND CONVERTER INCLUDING THE SAME - In a converter using a transformer, a switch controller controlling a main switch and an auxiliary switch increase a turn-on time of the auxiliary switch when a voltage of a signal corresponding to a current flowing to a primary coil of the transformer is greater than a reference voltage for a predetermined period. | 05-17-2012 |
Kwang-Ii Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100321962 | Frequency Modulation Controller, Switch Mode Power Supply Including The Same, And Switching Operation Frequency Modulation Method - The present invention relates to switching operation frequency modulation for reducing an output voltage ripple. | 12-23-2010 |
Kwang-Il Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110204866 | SWITCH CONTROL DEVICE, POWER SUPPLY DEVICE INCLUDING THE SAME, AND SWITCH CONTROL METHOD - The present invention relates to a switch control device, a power supply device, and a switch control method. A switch control device controls a switching operation of a power switch by using a feedback voltage of an output voltage. In detail, the switch control device generates the feedback current according to the feedback voltage and the feedback signal corresponding to the feedback voltage by using the feedback current. The switch control device compares the sensing signal corresponding to the drain current flowing to the power switch and the feedback signal, and turns off the power switch according to the comparison result. The switch control device increases the feedback gain rather than the feedback current during the gain compensation period after a predetermined gain compensation period, and the gain compensation period is longer than a soft start period in which the output voltage is gradually increased. | 08-25-2011 |
| 20120033457 | HOLD-UP TIME EXTENDING CIRCUIT AND CONVERTER INCLUDING THE SAME - The present invention relates to a hold-up time expansion circuit and a converter including the same. | 02-09-2012 |
| 20120057374 | DUTY ADJUSTER CIRCUIT AND CONVERTER INCLUDING THE SAME - The present invention relates to a duty adjuster circuit and a converter. | 03-08-2012 |
Kyungshin Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100081533 | HYBRID POWER TRAIN OF VEHICLE - The present invention makes it possible to implement various stepped gear modes and a compound split type hybrid mode in a relatively simple structure using two planetary gear sets and two motor generators, reduce fuel consumption of a vehicle in a relatively large section, minimize fuel consumption at a high speed by implementing an overdrive stepped gear mode, and improve acceleration performance and gradient performance of the vehicle by implementing an underdrive stepped gear mode. | 04-01-2010 |
Kyung Yul Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100101961 | Method of duplicating nano pattern texture on object's surface by nano imprinting and electroforming - Disclosed is a method of duplicating a nano-pattern texture of the surface of an object through electroforming using an imprint mold, including selecting the object having the surface texture to be duplicated; disposing the selected object and pre-treating the surface thereof; nano-imprinting the surface of the pretreated object, thus duplicating it on a plastic mold; metallizing the surface of the plastic mold through vapor deposition, and performing electroforming, thus manufacturing metal module master molds; trimming the edges of the metal module master molds, performing micro-processing, connecting the metal module master molds, and then performing electroforming, thus manufacturing a large-area metal unit master mold; and electroforming the metal unit master mold, thus producing a duplicate having the surface texture, thus exhibiting an effect in which the skin of a selected natural object can be duplicated on metal having a uniform thickness. | 04-29-2010 |
| 20110318533 | METHOD OF DUPLICATING TEXTURE PATTERN ON OBJECT'S SURFACE BY NANO IMPRINTING AND ELECTROFORMING AND PATTERNED DUPLICATION PANEL USING THE SAME - Provided is a method of duplicating a nano-pattern texture of the surface of an object through electroforming using an imprint mold, including selecting the object having the surface texture to be duplicated; disposing the selected object and pre-treating the surface thereof; nano-imprinting the surface of the pretreated object, thus duplicating it on a plastic mold; metalizing the surface of the plastic mold through vapor deposition, and performing electroforming, thus manufacturing metal module master molds; trimming the edges of the metal module master molds, performing micro-processing, connecting the metal module master molds, and then performing electroforming, thus manufacturing a large-area metal unit master mold; and electroforming the metal unit master mold, thus producing a duplicate having the surface texture, thus exhibiting an effect in which the skin of a selected natural object can be duplicated on metal having a uniform thickness. | 12-29-2011 |
Suk Won Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110155429 | Carrier substrate, fabrication method thereof, printed circuit board using the same, and fabrication method thereof - Disclosed are a carrier substrate including an insulating base material with a copper foil layer formed on at least one surface thereof, a metal layer formed on the cooper layer and having a length shorter than that of the copper foil layer, and an insulating layer formed on the metal layer, a fabrication method thereof, a printed circuit board (PCB) using the same, and a fabrication method thereof. Because there is no land at the via and core in the substrate, because a circuit pattern connected with the via can be formed to be finer, so the circuit pattern can be highly integrated and the substrate can become thinner. Thus, a printed circuit board (PCB) having a smaller size and reduced number of layers can be fabricated. | 06-30-2011 |
Suk Woo Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090058563 | Frequency Tunable Filter - A frequency tunable filter comprises a housing having a plurality of walls therein defining a plurality of cavities; a cover mounted on the housing; a plurality of resonators contained in the cavities; at least one sliding member located between the cover and the resonators; and a plurality of metal tuning elements attached to a lower part of the sliding member, wherein frequency tuning is performed by sliding of the sliding member. | 03-05-2009 |
Yoon Ji Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20120132080 | APPARATUS FOR REGENERATING A CARBON DIOXIDE ABSORPTION SOLUTION - Provided is an apparatus for regenerating a carbon dioxide absorption solution that regenerates an absorption solution for absorbing carbon dioxide contained in a combustion exhaust gas emitted during a combustion process of a vehicle, thereby reducing energy costs while simplifying its configuration. The apparatus includes a first storage tank for storing an absorption solution that contains absorbed CO | 05-31-2012 |
Young-Bok Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090015763 | LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME - A liquid crystal display (LCD) device comprises a substrate, and red, green, blue (RGB) color filters. The RGB color filters are spaced from one another with a predetermined gap therebetween on the substrate, and define RGB sub-pixels. The LCD device further comprises black matrixes disposed at each space between the RGB color filters, and barriers disposed at each interface among the RGB sub-pixels such that the barriers control a path of light that passes through a corresponding sub-pixel. | 01-15-2009 |
| 20100033398 | MODULAR ACTIVE ANTENNA FOR RECEIVING MULTIPLE BROADCASTING SIGNALS - The present invention relates to a modular active antenna for receiving multiple broadcast signals. The modular active antenna includes an internal antenna, an active module and a printed circuit board. The internal antenna is formed in a polyhedral shape having an open bottom surface and configured to receive multiple broadcast frequency signals. The active module is arranged below the internal antenna to constitute a single module together with the internal antenna and is configured to selectively perform impedance matching on any one of the multiple broadcast frequency signals received by the internal antenna. The printed circuit board is configured to allow the internal antenna and the active module to be mounted thereon and is provided with a ground surface formed on the bottom thereof. | 02-11-2010 |
Young-Je Lee, Bucheon KR
| Patent application number | Description | Published |
|---|---|---|
| 20120020133 | SWITCH CONTROL DEVICE, POWER SUPPLY DEVICE COMPRISING THE SAME AND SWITCH CONTROL METHOD - Provided are a switch control device and a switch control method. The present invention generates power voltage required to operate the switch control device by using full-wave current rectification voltage generated by rectifying an AC input and detects a zero cross-point when a full-wave rectification voltage is zero voltage by using power voltage. The present invention generates a reference signal synchronized to the full-wave rectification voltage by using the detected zero cross-point and controls a switching operation of a power switch by comparing a reference signal with current which flows on the power switch. | 01-26-2012 |
| 20120020134 | SWITCH CONTROL DEVICE, POWER SUPPLY DEVICE COMPRISING THE SAME AND SWITCH CONTROL METHOD - Provided are a switch control device, a switch control method, and a power supply device. | 01-26-2012 |