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Sang Hyun Park, Daejeon KR

Sang Hyun Park, Daejeon KR

Patent application numberDescriptionPublished
20080307641Method of fabricating paste bump for printed circuit board - This invention relates to a method of fabricating a paste bump for a printed circuit board, which can decrease the number of printings to thus reduce the fabrication cost and process time in the formation of the paste bump on the printed circuit board.12-18-2008
20090080067PDP Filter for Absorbing Near Infrared Ray - There is provided a PDP filter for absorbing near infrared ray capable of significantly reducing the kind and amount of dyes that are used to block a near infrared ray (NIR) emitted from PDP, the filters having physical properties that are improved when compared to conventional PDP filters for absorbing near infrared ray in which a large amount of 2, 3 or more dyes are used to block wide NIR spectra. The PDP filter includes a dye whose maximum absorption wavelength to a near infrared ray ranges from 880 to 1000 nm, and preferably from 900 to 960 nm. The PDP filter can be useful to improve its productivity, reduce the manufacturing cost and prevent the decrease in the light transmittance by unnecessary dyes.03-26-2009
20090130547Microporous polyethylene film with improved strength, permeability and surface energy - The present invention relates a microporous polyethylene film with improved mechanical strength, porosity, pore size and, particularly, improved surface energy, thereby having improved electrolyte wettability and being adequate for use as separators in high-capacity and long lifetime lithium secondary batteries. The microporous polyethylene film of the present invention is characterized by having a surface energy of at least 50 dynes/cm05-21-2009
20090160337Film for Improving Contrast and Plasma Display Panel and Display Device Including the Same - There is provided a film for improving contrast, the film including a plurality of stripes each having a section in the shape of one of a trapezoid, a triangle, with a decreasing width from a surface of the film to an inner portion of the film, a rectangle, and a parallelogram, having a constant width from the surface of the film to the inner portion of the film. In a cross-sectional view cut along a thickness direction of the film, a line connecting an inner edge of an inner portion of one stripe with an inner edge of an outer portion of another adjacent stripe forms a shielding angle of 15 to 50° with a normal line perpendicular to a surface of the film.06-25-2009
20090322172HYBRID THREE-POLE ACTIVE MAGNETIC BEARING AND METHOD FOR EMBODYING LINEAR MODEL THEREOF - Disclosed are a hybrid three-pole active magnetic bearing and a method for embodying a linear model thereof. The hybrid three-pole active magnetic bearing comprises: a stator including a main-magnetic pole in which three magnetic poles are arranged in a fan-shape at an interval of 120 degrees and the three magnetic poles are wound by a coil respectively and a sub-magnetic pole in which three magnetic poles are arranged in a fan-shape at an interval of 120 degrees and a permanent magnet is provided at peripheral ends of the three magnetic poles respectively; and a rotor enclosing a circumference of the stator, in which the three magnetic poles of the main-magnetic pole and the three magnetic poles of the sub-magnetic pole are alternately located at the same interval, and the sub-magnetic pole further includes a pole shoe is formed as a “U” shape and provided at a peripheral end of the permanent magnet.12-31-2009
20090322677LIGHT GUIDE PLATE FOR SYSTEM INPUTTING COORDINATE CONTACTLESSLY, A SYSTEM COMPRISING THE SAME AND A METHOD FOR INPUTTING COORDINATE CONTACTLESSLY USING THE SAME - Disclosed are a light guide plate for a non-contact type coordinate input system, a system including the same, and a non-contact type coordinate input method using the same. More particularly, the present invention relates to a light guide plate for a non-contact type coordinate input system, which eliminates inconvenience of a conventional contact-type coordinate input system inputting coordinates through direct contact, and which can reduce use of sensors and optical loss as much as possible. The present invention also relates to a system including the same, and a non-contact type coordinate input method using the same.12-31-2009
20100028608Impact Absorption Layer Having Excellent Impact Resistance And Film Having Use Of Impact Absorption Comprising The Same - There is provided a film having use of impact absorption capable of protecting a panel from impacts when the impacts are given to a display device, a window since it has an excellent ability to absorb impacts given to a surface of a display device, a window, or equivalent base plates. The impact absorption layer having a thickness of 30 or more has a hardness of 20 to 100 as measured at a room temperature using an Asker C hardness tester. Also, the film having use of impact absorption has excellent impact resistance and includes at least one layer, wherein the film includes at least one impact absorption layer having a hardness of 20 to 100 as measured at a room temperature using an Asker C hardness tester, the impact absorption layer having the total thickness of 30 or more.02-04-2010
20100029507THE BIOCHIP FOR THE DETECTION OF PHOSPHORYLATION AND THE DETECTION METHOD USING THE SAME - The present invention relates to a biochip for the detection of phosphorylation and a method for measuring phosphorylation using the same, more precisely a biochip integrated with the substrate of kinase and a kit for measuring phosphorylation comprising the biochip and a radio-labeled co-factor, and a method for measuring phosphorylation using the same. The kit for the detection of phosphorylation of the present invention facilitates simple and fast measurement of phosphorylation with a minimum amount of a sample, compared with the conventional method using an antibody, because it uses a radioisotope. This chip and kit can be effectively used for the analysis of kinase activity since this method favors fast mass analysis.02-04-2010
20100067116FILTER OF DISPLAY DEVICE - There is provided a filter of a display device capable of ensure a contrast ratio equal to or more than a predetermined value in various viewing angles. The filter of a display device includes a transparent film; and a plurality of stripe patterns formed parallel to both surfaces of the transparent film, wherein a width (a) of the stripe patterns and a thickness (t) of the transparent film are adjusted to a critical angle (θc) of 20 to 50°.03-18-2010
20100277845Circuit Apparatus for Protecting a Pre-Charge Resistance Using an Interlock Switch - The present invention relates to a circuit apparatus for protecting a pre-charge resistance using an inter-lock switch, and more particularly, to a circuit apparatus for protecting a pre-charge resistance by controlling a current flowing to a voltage transformer of an electric vehicle using an inter-lock switch and a polyswitch. The present invention provides a circuit apparatus for protecting a pre-charge resistance using an inter-lock switch, including a pre-charge resistance, a pre-charge relay and a main relay placed between a battery of a hybrid electric vehicle and a voltage transformer, wherein the circuit apparatus includes an inter-lock switch which is operated complementarily with the pre-charge relay and is for preventing continuous flow of an overcurrent to the voltage transformer and the resulting damage of the pre-charge resistance.11-04-2010
20110089898Two-Stage Charge Equalization Method and Apparatus for Series-Connected Battery String - A two-stage charge equalization apparatus for a series-connected battery string having a two-stage DC-DC converter including a first DC-DC converter; and a second DC-DC converter which is inputted. A battery string is divided into one or more battery modules having a plurality of battery cells connected in series, and a current conversion switch module forms a path of the charge current between the battery module and the second DC-DC converter to allow the charge current to be applied to the particular battery cell composing the battery module and controls an application direction of the charge current. A microprocessor determines a battery cell to be charged of a low-charged battery cell and controls the current conversion switch module to allow the charge current to be applied to the battery cell to be charged.04-21-2011

Patent applications by Sang Hyun Park, Daejeon KR