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Byungchul
Byungchul Ahn, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20090251394 | Flat panel display - A flat panel display is disclosed. The flat panel display includes a display panel including data lines, gate lines crossing the data lines, pixels arranged in a matrix format, and a pixel array that allows images to be simultaneously displayed on one screen by suitably disposing the images on one screen, a data drive circuit supplying data to the data lines, a gate drive circuit supplying scan signals to the gate lines, a scalar board converting a resolution of each of the images, and a control board that supplies data received from the scalar board to the data drive circuit and controls operation timing of the data drive circuit and operation timing of the gate drive circuit. a ratio of a horizontal length to a vertical length of the pixel array is 21.3-26.7:10. | 10-08-2009 |
| 20100291720 | Method of fabricating organic light emitting diode display - A method of fabricating an organic light emitting diode display device includes: sequentially forming a thin film transistor (TFT) array, a first electrode, a bank pattern, a spacer, and a first relevant layer on an acceptor substrate; sequentially forming a metal pattern and an organic light emission material layer on a doner substrate; aligning and attaching the acceptor substrate and the doner substrate, and forming the light emission layer by transferring the organic light emission material onto the acceptor substrate by applying power to the metal pattern; and sequentially forming the second relevant layer and the second electrode on the light emission layer-formed acceptor substrate. | 11-18-2010 |
Byungchul Cho, Anyang KR
| Patent application number | Description | Published |
|---|---|---|
| 20110235860 | Method to estimate 3D abdominal and thoracic tumor position to submillimeter accuracy using sequential x-ray imaging and respiratory monitoring - A method of estimating target motion for image guided radiotherapy (IGRT) systems is provided. The method includes acquiring by a kV imaging system sequential images of a target motion, computing by the kV imaging system from the sequential images an image-based estimation of the target motion expressed in a patient coordinate system, transforming by the kV imaging system the image-based estimation in the patient coordinate system to an estimate in a projection coordinate system, reformulating by the kV imaging system the projection coordinate system in a converging iterative form to force a convergence of the projection coordinate system to output a resolved estimation of the target motion, and displaying by the kV imaging system the resolved estimation of the target motion. | 09-29-2011 |
Byungchul Choi, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20100055575 | LITHIUM SECONDARY BATTERY OF ELECTROLYTE CONTAINING AMMONIUM COMPOUNDS - Disclosed is a lithium secondary battery using a cathode containing a lithium-containing transition metal oxide and an anode containing graphitized carbon, characterized in that an ammonium compound capable of providing ammonium ions is added to a non-aqueous electrolyte. Therefore, the present invention provides a lithium secondary battery having improved high-temperature performance by reducing decreases of residual capacity and recovery capacity resulting from high-temperature storage of the battery, via addition of such an ammonium compound. | 03-04-2010 |
Byungchul Jang, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090202885 | Process to prepare the self-stand electrode using porous supporter of electrode catalyst for fuel cell, a membrane electrode assembly comprising the same - The present invention relates to a porous electrode used in a polymer electrolyte membrane fuel cell, and more particularly to a method of preparing a membrane-electrode assembly by forming a self-stand electrode layer by coating catalyst ink on a non-conductive substrate having a macropore and then joining it to a polymer electrolyte membrane. The porous self-stand electrode according to the present invention allows moisture and gas to be smoothly discharged and inflowed in a high current density operation region to improve the performance of a fuel cell, and can be freely cutted to simplify the preparation process of the membrane-electrode assembly. | 08-13-2009 |
| 20100233578 | Process for the Electrochemical Catalysts of Fuel Cells Based on Polymer Electrolytes - The present invention relates to a process for the preparation of electrochemical catalysts of the polymer electrolytes-based fuel cells. With the process of the present invention, high catalyst activity while uniformly supporting a large amount of metal particles on a surface of a support can be achieved. Also, the present invention provides a process for the preparation of electrochemical catalysts of the polymer electrolytes-based fuel cells capable of using a small amount of toxic solvent without an additional high-temperature hydrogen annealing. | 09-16-2010 |
| 20100330463 | PROCESS FOR PREPARING OF A CATALYST SOLUTION FOR FUEL CELL AND A MEMBRANE ELECTRODE ASSEMBLY USING THE SAME - The present invention discloses a process for preparing catalyst solution for a membrane-electrode assembly in a fuel cell, which comprises the steps of a) mixing a catalyst solution (Solution A) wherein catalyst particles are dispersed in water and an ion conductive resin solution (Solution B) wherein an ion conductive resin is dissolved in water, low boiling point organic solvent or a mixture thereof, to form a dispersion; b) mixing the dispersion obtained from step a) with functional additive dissolved in high boiling point solvent or a mixture of low boiling point solvent arid water (Solution C) to prepare catalyst ink dispersion; and c) aging the catalyst ink dispersion obtained from step b). | 12-30-2010 |
Byungchul Kim, Suwon-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20100242071 | METHOD AND APPARATUS FOR TRANSFERRING USER INFORMATION BETWEEN TERMINALS IN BROADCAST STREAMING SERVICE - A method and apparatus for transferring user information between different terminals are disclosed. The method includes saving by a first terminal, when a change is made to user information during playback of content, the changed user information in a scene history, performing a terminal change from the first terminal to a second terminal, and resuming, by the second terminal, playback of the content from a continued scene after the last scene played back by the first terminal. Consequently, in a terminal change, the user may use the second terminal to play back the same content from the continued scene using the same content usage environment as the first terminal. | 09-23-2010 |
Byungchul Lee, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100102279 | RADIATION SHIELDING MEMBERS INCLUDING NANO-PARTICLES AS A RADIATION SHIELDING MATERIAL AND METHOD FOR PREPARING THE SAME - Disclosed is a radiation shielding member having improved radiation absorption performance, including 80.0˜99.0 wt % of a polymer matrix or metal matrix and 1.0˜20.0 wt % of a radiation shielding material in the form of nano-particles having a size of 10˜900 nm as a result of pulverization, wherein the radiation shielding material is homogeneously dispersed in the matrix through powder mixing or melt mixing after treatment with a surfactant which is the same material as the matrix or which has high affinity for the matrix. A preparation method thereof is also provided. This radiation shielding member including the nano-particles as the shielding material further increases the collision probability of the shielding material with radiation, compared to conventional shielding members including micro-particles, thus reducing the mean free path of radiation in the shielding member, thereby exhibiting superior radiation shielding effects. At the same density, the shielding member has reduced thickness and volume and is thus lightweight. The porosity of the shielding member is minimized, thereby preventing the deterioration of shielding effects and properties of the shielding member and realizing applicability in spent fuel managing transport/storage environments and the like. | 04-29-2010 |