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Il-Young
Il-Young Han, Uiwang-Si KR
| Patent application number | Description | Published |
|---|---|---|
| 20090141275 | ALIGNMENT INSPECTION METHOD AND ALIGNMENT INSPECTION APPARATUS - A method of inspecting the alignment of a second structure with respect to a first structure, including emitting light from a first plane of a first structure to a second plane of a second structure in a first direction perpendicular to the first plane of the first structure, the first plane and the second plane facing each other. The incident light can be reflected from the second plane toward the first plane in a second direction parallel with the first direction. The position of the reflected light can be detected to inspect the alignment of the second structure with respect to the first structure. | 06-04-2009 |
Il-Young Han, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20090134202 | REFLOW APPARATUS AND METHOD - Provided are a reflow apparatus and method. The reflow apparatus includes a loader unit, a heating unit, an unloader unit, and a moving unit. The loader unit has an input module and an input stacker. Processing objects are stored in vertical stacks in magazines, and a plurality of magazines is stored in the input stacker. The magazines stored in the input stacker are moved to the input module and are introduced into the heating unit by the moving unit. Solder balls provided on the processing objects within the heating unit are quickly processed using an induction heating method. The processing objects that have undergone a reflow process are loaded in a magazine on an output module of the unloader unit and are then stored in an output stacker. | 05-28-2009 |
Il-Young Jung, 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 |
| 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 |
Il-Young Yoon, Gyeonggi-Do KR
| Patent application number | Description | Published |
|---|---|---|
| 20080290446 | SHALLOW TRENCH ISOLATION STRUCTURES FOR SEMICONDUCTOR DEVICES INCLUDING WET ETCH BARRIERS AND METHODS OF FABRICATING SAME - A semiconductor device includes a sidewall oxide layer covering an inner wall of a trench, a nitride liner on the sidewall oxide layer and a gap-fill insulating layer filling the trench on the nitride liner. A first impurity doped oxide layer is provided at edge regions of both end portions of the sidewall oxide layer so as to extend from an entry of the trench adjacent to an upper surface of the substrate to the nitride liner. A dent filling insulating layer is provided on the nitride liner in the trench to protect a surface of the first impurity doped oxide layer. Related methods are also disclosed. | 11-27-2008 |
| 20100007021 | Methods of Fabricating Semiconductor Devices Including Porous Insulating Layers - Semiconductor devices including a substrate and an uppermost insulating layer formed on the substrate and having pores is provided. A conductive wiring is provided in the uppermost insulating layer. Dummy vias are provided, each penetrating the uppermost insulating layer, being adjacent to the conductive wiring, and having a space therein. Related methods of fabricating semiconductor devices are also provided. | 01-14-2010 |