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Bum Jin
Bum Jin Kim, Boochun KR
| Patent application number | Description | Published |
|---|---|---|
| 20090321773 | LED PACKAGE FRAME AND LED PACKAGE HAVING THE SAME - An LED package frame includes an LED chip and a heat conductive member made of high heat conductivity material. The heat conductive member has a receiving part at a lateral portion, and is mounted with the LED chip. A lead-coating assembly configured to be inserted into the receiving part of the heat conductive member, including a lead is inserted at one end into the receiving part of the heat conductive member, and electrically connected to the LED chip. An electrically insulating layer is placed in tight contact between the lead and the receiving part of the heat conductive member isolates the lead from the receiving part. With the lead inserted into the heat conductive member, it is possible to reduce size while maintaining high heat conductivity and stability. | 12-31-2009 |
Bum Jin Kim, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20090128298 | METHOD AND SYSTEM FOR LOCATING SENSOR NODE IN SENSOR NETWORK USING TRANSMIT POWER CONTROL - A method and apparatus for a sensor network having a plurality of reference nodes and a sensor node that enables the sensor node to compute a relative position through transmission range control and position mapping. In transmission range control, each reference node sends location information signals to the sensor node while varying transmission power. In position mapping, the sensor node forms a grid of vertical and horizontal lines corresponding to a square area defined by the neighboring reference nodes, extracts coordinates of intersections in the grid belonging to a shared region between areas covered by location information signals of various transmit power levels from the neighboring reference nodes, and sets the position of the sensor node to the middle points of the extracted coordinates. Each reference node sends a location information signal when a random backoff time expires after reception of a location information request signal. | 05-21-2009 |
| 20090128412 | METHOD AND SYSTEM FOR LOCATING SENSOR NODE IN SENSOR NETWORK USING DISTANCE DETERMINING ALGORITHM - For a sensor network having reference nodes and sensor nodes, A method and apparatus using a distance determining algorithm for a sensor network having reference nodes and sensor nodes. A distance determining algorithm is executed to determine an adequate distance between reference nodes within a preset error range, and a position location table is created. A sensor node sends a location information request to reference nodes, receives the position location table and location information from the reference nodes, and computes the coordinates of its position. Alternatively, without requesting transmission of the position location table, the sensor node may receive calculated coordinates of its position directly from a reference node. | 05-21-2009 |
Bum Jin Lee, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20080213509 | Composition for LC alignment film using diamine having dendron side chain - Disclosed herein is an LC aligning agent using diamine having dendron side chains. In detail, the present invention relates to a composition for an LC alignment film which employs diamine having dendron side chains to produce polyamic acid, followed by imidization. When the LC alignment film is applied to a liquid crystal display device, high heat resistance, high penetration in a visible ray range, excellent alignment, and a high voltage holding ratio are assured. Even though it contains a small amount of functional diamine, a high pretilt angle can be assured. Thus, the pretilt angle is easily controlled and a vertical aligning force is improved. | 09-04-2008 |
| 20100168374 | Diamine compound having dendron side chain and liquid crystal aligning agent using same - Disclosed herein is a novel functional diamine compound having a dendron structure, polyamic acid which is produced using functional diamine, aromatic cyclic diamine, aliphatic cyclic acid dianhydride, and aromatic cyclic acid dianhydride, polyimide which is produced by imidizing polyamic acid, and an LC alignment film produced using polyimide. Even if the diamine compound is used in a small amount, it is possible to realize a high pretilt angle, thus the pretilt angle is easily controlled. Therefore, it can be used to produce an LC alignment film using a twisted nematic (TN) mode, in which the pretilt angle of liquid crystal is low, and a vertically aligned (VA) mode, which requires a high pretilt angle of about 90°. | 07-01-2010 |
Bum Jin Lee, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20110250315 | METHOD FOR PREPARING FERMENTED TEA USING BACILLUS SP. STRAINS (As Amended) - Disclosed is a method for manufacturing fermented tea having superior flavor using | 10-13-2011 |
Bum Jin Park, Seoul KR
| Patent application number | Description | Published |
|---|---|---|
| 20100109263 | ELECTROSTATIC CHUCK HAVING REDUCED ARCING - Electrostatic chucks and methods of manufacturing the same are provided herein. In some embodiments, an electrostatic chuck comprises an electrically conductive body having one or more channels formed in an upper surface thereof; a plate positioned within the one or more channels to define one or more plenums between the body and the plate, wherein the surfaces of the plenum are anodized; one or more fluid passages disposed in the plate and fluidly coupling the one or more plenums to the upper surface of the body, wherein the surfaces of the fluid passages are electrically insulated; and a dielectric layer disposed over the upper surface of the body and the plate, wherein the dielectric layer forms a support surface for a substrate to be disposed thereon. | 05-06-2010 |