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Cheol
Cheol Choi, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100329299 | APPARATUS AND METHOD FOR MEASURING CONVECTIVE HEAT TRANSFER COEFFICIENTS OF NANOFLUIDS - The present invention relates to an apparatus and method for measuring the convective heat transfer coefficients of nanofluids, which can realize a small-sized structure and can accurately control the movement velocity of a hot wire sensor within a fluid. | 12-30-2010 |
| 20110046028 | PREPARATION METHOD OF LUBRICATING OIL AND LUBRICATING OIL PRODUCED THEREBY - Provided are a mixed nano-lubricating oil and a method for preparing the same. The method for preparing a mixed nano-lubricating oil includes the steps of: (a) preparing a mixed solution by adding and mixing a nanopowder and a dispersant to a solvent and pulverizing the nanopowder to a primary particle level; (b) modifying the surface of the nanopowder; (c) substituting the solvent of the mixed solution to a lubricating oil; and (d) mixing at least two nano-lubricating oils prepared using physically and chemically different nanopowders. According to the present invention, it is possible to improve the wear resistance and the load resistance at the same time by mixing at least two kinds of lubricating oils having excellent wear resistance or load resistance. | 02-24-2011 |
Cheol Han, Sungnam City KR
| Patent application number | Description | Published |
|---|---|---|
| 20100179453 | Upper Limb Measurement and Rehabilitation Method and System - A method for measuring an upper limb reaching capability of a user with an impaired limb is provided. Each upper limb is placed at a default position on a horizontal surface. A target is displayed from among a plurality of targets on the horizontal surface. One of the limbs reaches for the target. Limb choice, position information and elapsed time are sensed and recorded. The reaching limb is retracted to the default position. The displaying step through the retracting step are repeated for each of the plurality of targets, wherein each of the plurality of targets is spaced apart. | 07-15-2010 |
Cheol Jang, Gyeongju-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20110236361 | EFFECTIVE CONTROL OF VIRAL PLANT DISEASE WITH STRAINS OF PSEUDOMONAS OLEOVORANS - A strain of | 09-29-2011 |
Cheol Kim, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20110116335 | SEMICONDUCTOR MEMORY DEVICE AND SYSTEM INCLUDING THE SAME - A semiconductor memory device includes a cell array unit having a plurality of banks each having a plurality of blocks, and a refresh controller configured to set at least one of the blocks as a test block, perform a refresh operation on the blocks except for the test block in a self-refresh operation period, determine a refresh period of the test block, and then set another one of the blocks as the test block. | 05-19-2011 |
| 20110199836 | BIT-LINE SENSE AMPLIFIER, SEMICONDUCTOR MEMORY DEVICE HAVING THE SAME, AND METHOD OF TESTING BIT-LINE MICRO-BRIDGE DEFECT - The bit-line sense amplifier includes a driving-voltage control circuit and an amplifier. The driving-voltage control circuit generates a first test driving voltage having a voltage level of a pre-charge voltage, a second test driving voltage having a voltage level of a pre-charge voltage added by a voltage difference between a bit-line and a complementary bit-line, and a third test driving voltage having a voltage level of a pre-charge voltage subtracted by the voltage difference in a test mode. The amplifier senses and amplifies a voltage difference between the bit-line and the complementary bit-line. | 08-18-2011 |
| 20110228624 | SUB-WORD-LINE DRIVING CIRCUIT, SEMICONDUCTOR MEMORY DEVICE HAVING THE SAME, AND METHOD OF CONTROLLING THE SAME - Provided is a semiconductor memory device including a sub-word-line driving circuit capable of reducing an amount of leakage current due to coupling. The semiconductor memory device includes a word-line enable signal generating circuit and a sub-word-line driving circuit. The sub-word-line driving circuit provides a pull-down current path between a selected word line and ground for a pulse type period of time in a precharge mode following an active mode for the selected word line, generates a word line driving signal on the basis of a main word line driving signal, a first sub-word-line control signal, and a second sub-word-line control signal, and provides the word line driving signal to a memory cell array. The semiconductor memory device may reduce an amount of leakage current flowing to a ground through the sub-word-line driving circuit. | 09-22-2011 |
Cheol Lee, Wonju-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20090202771 | MASKING FILM AND METHOD FOR MANUFACTURING THEREOF - A masking film is provided to protect an area that should not be painted. A method for manufacturing the masking film requires extrusion-molding a film sheet in a tube shape; compressing the tube to create a twofold film sheet; folding the twofold film sheet in half by a first center line, to form a fourfold film sheet; folding the fourfold film sheet in half by a second center line, to form an eightfold film sheet; slitting an outermost film along a virtual slitting line positioned at a predetermined width inward from a folding line to form a plurality of leaves; and winding the film sheet about a bobbin with a slitting line slit positioned inwardly. | 08-13-2009 |
Cheol Shin, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20090284700 | SUBSTRATE FOR DISPLAY PANEL, LIQUID CRYSTAL DISPLAY PANEL HAVING THE SUBSTRATE, AND METHOD OF MANUFACTURING THE SAME - A substrate for a display panel includes a transparent electrode layer and an alignment layer. The transparent electrode layer is disposed on an insulating substrate, the transparent electrode layer being electrically floated. The alignment layer is disposed on the insulating substrate on which the transparent electrode layer is formed, and the alignment layer having a pre-tilt angle tilted about 85° to about 90° form the insulating substrate. | 11-19-2009 |
| 20100208184 | ARRAY SUBSTRATE AND DISPLAY APPARATUS HAVING THE SAME - An array substrate includes first and second pixel electrodes. The first pixel electrode includes a plurality of first slit electrode portions and a first supporting electrode portion connected with the first slit electrode portions. The first slit electrode portions extend in a zigzag fashion along the shape of a unit pixel area and a first direction. The second pixel electrode includes a plurality of second slit electrode portions and a second supporting electrode portion connected with the second slit electrode portion. The second slit electrode portions extend in the zigzag fashion along the shape of the unit pixel area and the first direction. Side visibility and a response time may be improved, so that display quality may be improved. | 08-19-2010 |
| 20110128210 | ARRAY SUBSTRATE AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A liquid crystal display device includes a first thin film transistor connected to a first data line and controlling a first voltage output, a second thin film transistor connected to a second data line parallel to the first data line and controlling a second voltage output, a third thin film transistor connected to a third data line disposed between the first data line and the second data line and controlling a third voltage output, a first liquid crystal capacitor electrically connected to the first thin film transistor and the third thin film transistor, and a second liquid crystal capacitor electrically connected to the second thin film transistor and the third thin film transistor. | 06-02-2011 |
Cheol Yoon, Cheongju-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20090303697 | OPTICAL SHEET, BACKLIGHT UNIT, AND LIQUID CRYSTAL DISPLAY - An optical sheet, a backlight unit including the optical sheet, and a liquid crystal display including the backlight unit are disclosed. The optical sheet includes a base film, a base portion on the base film, and a plurality of projections on the base portion. The base portion includes a first area. The projections include a plurality of peaks and a plurality of valleys. The first area is a section including a first side adjoining to one of the valleys and a second side corresponding to a height of the base portion. A length of the first side is substantially 2 μm to 10 μm. The first area has one first bead or 2 to 5 first beads. | 12-10-2009 |
Cheol Yoon, Gumi-City KR
| Patent application number | Description | Published |
|---|---|---|
| 20080225207 | OPTICAL SHEET AND LIQUID CRYSTAL DISPLAY USING THE SAME - An embodiment of this document relates to an optical sheet and a liquid crystal display using the same. An optical sheet in accordance with an aspect of this document may comprise a base film, and a plurality of projections including at least one of lenticular lens or micro lens, positioned on one surface of the base film. The projection may comprise a first resin and a plurality of first beads, and about 1 to 10 parts by weight of the first bead based on 100 parts by weight of the first resin. | 09-18-2008 |
Cheol Yoon, Cheongju KR
| Patent application number | Description | Published |
|---|---|---|
| 20090135335 | OPTICAL FILM AND LIQUID CRYSTAL DISPLAY INCLUDING THE SAME - An optical film and a liquid crystal display including the optical film are disclosed. The optical film includes a reflective polarizing film, a first primer layer on the reflective polarizing film, and a first projection on the first primer layer. | 05-28-2009 |
| 20100265434 | OPTICAL FILM, BACKLIGHT UNIT INCLUDING THE SAME AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - An optical film, a backlight unit having the same, and a liquid crystal display device having the same are disclosed. The optical film comprises a base film and a plurality of structures disposed on the base film, at least one of the structures comprising a plurality of beads with a diffusion portion having a first diameter and a transmission portion having a second diameter integrally formed with each other. | 10-21-2010 |