Patent application number | Description | Published |
20080304882 | FUSING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A fusing device includes a pressing member, a belt member to rotate in contact with the pressing member, a nip forming member to support the belt member so that nip areas are formed on the pressing member and the belt member at contacting portions thereto, a heating member disposed away from the nip areas, to heat the belt member, and a tension application member to stiffen the belt member so that the heating member is tightly contacted with the belt member. The heating member includes a plate type heating element which is arranged at an upstream side of the nip areas, and to contact an inner circumference of the belt member, in an advancing direction of the fusing belt. The effective width of then nip areas increases, and the increased pressure is exerted to the nip areas, because the fusing belt enters a location where the nip areas are formed in a heated state. Furthermore, heating efficiency of the fusing belt is increased, because the fusing belt is heated while in a tight contact with the heating member. As a result, fusing performance is enhanced. | 12-11-2008 |
20090027929 | POWER SUPPLY CIRCUIT OF IMAGE DISPLAY APPARATUS - A power supply circuit of an image display apparatus is provided. The power supply circuit uses a single DC-DC converter, and is capable of supplying low voltage when the image display apparatus is in standby mode, and supplying high voltage as required when the image display apparatus is in operating mode. As a result, power consumption and manufacturing costs are reduced. | 01-29-2009 |
20090092423 | FUSING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A fusing device includes a rotatable pressing roller, a fusing belt to rotate by a rotational force transmitted from the rotatable pressing roller, a nip forming member to contact an inner surface of the fusing belt to form a nip on a contact area between the rotatable pressing roller and the fusing belt, a heating member formed in approximately an internal central portion of the fusing belt to heat the nip forming member and the fusing belt, an inner support member formed within the fusing belt to press a nip part of the nip forming member toward the rotatable pressing roller, and an outer support member formed outside the fusing belt, and both ends of the outer support member being engaged with the inner support member to thereby reinforce the strength of the inner support member and form a path for radiation heat to disperse. The support unit includes an inner support member placed within the belt unit, and an outer support member placed outside the belt unit, both ends of the outer support member being engaged with the inner support member to reinforce the strength of the inner support member and to form a path for a radiation heat to disperse. | 04-09-2009 |
20100007644 | BACKLIGHT ASSEMBLY, DISPLAY COMPRISING THE SAME AND CONTROL METHOD THEREOF - A backlight assembly, a display device including the backlight assembly and a control method thereof are provided. The backlight assembly includes: a DC converter which converts input alternating current (AC) power into direct current (DC) power at various levels; a light source unit which has at least one point light source; and a power supply unit which receives the DC power output by the DC converter, converts the DC power into output power having a preset reference current level and supplies the output power to the light source unit. | 01-14-2010 |
20100052558 | BACKLIGHT ASSEMBLY, DRIVING METHOD THEREOF AND DISPLAY APPARATUS - Disclosed are a backlight assembly, a driving method thereof and a display apparatus. The backlight assembly includes: a light source unit which has a plurality of point light source strings; a plurality of driving elements which are connected to the plurality of point light source strings; a detector which detects currents flowing in the plurality of point light source strings; and a light source driver which generates driving pulses to drive the plurality of driving elements in a linear operating region, adjusts duty ratios of the driving pulses based on at least one of the detected currents so that the currents flowing in the plurality of point light source strings are within a range. | 03-04-2010 |
20100193940 | Wafer level package and method of manufacturing the same - The present invention relates to a wafer level package and a method of manufacturing the same. The wafer level package includes a first substrate including a first region and second regions with grooves around the first region; a semiconductor device positioned in the first region; first sealing members positioned in the grooves; a second substrate including projection units corresponding to the second regions in order to form a cavity corresponding to the first region; and second sealing members which are positioned above the projection units and laminate the first and second substrates to each other by being bonded to the first sealing members, and can prevent the sealing members from flowing to any region except for the sealing regions. | 08-05-2010 |
20100253665 | CURRENT BALANCING APPARATUS, POWER SUPPLY APPARATUS, LIGHTING APPARATUS, AND CURRENT BALANCING METHOD THEREOF - A current balancing apparatus, a power supply apparatus, a lighting apparatus, and a current balancing method for preventing luminance imbalance are provided. The current balancing apparatus includes a balancer for balancing an AC current and a rectifier for generating a DC current by rectifying the balanced current. Hence, the luminance imbalance caused by dispersion of a light source can be addressed. | 10-07-2010 |
20100309597 | APPARATUS FOR PREVENTING OVER/UNDER VOLTAGE, LIGHT EMITTING MODULE, AND DISPLAY APPARATUS - An apparatus for preventing abnormal voltage, a light emitting module, and a display apparatus are provided. The present apparatus for preventing abnormal voltage extracts the highest voltage and the lowest voltage among voltage applied from a plurality of loads, includes two voltage distribution units distributing the highest voltage and the lowest voltage, and detects whether the highest voltage and the lowest voltage applied from the voltage distribution unit are within a predetermined range. Accordingly, the apparatus for preventing abnormal voltage is not affected greatly in terms of its size and cost even if the number of loads to be protected increases. | 12-09-2010 |
20110057960 | BACKLIGHT APPARATUS AND DISPLAY APPARATUS INCLUDING THE SAME - A backlight apparatus and a display apparatus are provided. The backlight apparatus includes N first switch units to switch a plurality of currents flowing in respective N light emitting element arrays according to an input brightness control signal, N second switch units to switch a plurality of currents flowing in respective N capacitors according to the input brightness control signal, and a reference current generation unit to generate and output a reference current based on the input brightness control signal. An inverter unit adjusts a total current supplied to all of the light emitting element arrays in total to be equal to the reference current if the total current is different from the reference current. | 03-10-2011 |
20110091254 | FUSING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A fusing device includes a rotatable pressing roller, a fusing belt to rotate by a rotational force transmitted from the rotatable pressing roller, a nip forming member to contact an inner surface of the fusing belt to form a nip on a contact area between the rotatable pressing roller and the fusing belt, a heating member formed in approximately an internal central portion of the fusing belt to heat the nip forming member and the fusing belt, an inner support member formed within the fusing belt to press a nip part of the nip forming member toward the rotatable pressing roller, and an outer support member formed outside the fusing belt, and both ends of the outer support member being engaged with the inner support member to thereby reinforce the strength of the inner support member and form a path for radiation heat to disperse. The support unit includes an inner support member placed within the belt unit, and an outer support member placed outside the belt unit, both ends of the outer support member being engaged with the inner support member to reinforce the strength of the inner support member and to form a path for a radiation heat to disperse. | 04-21-2011 |
20110102475 | DISPLAY APPARATUS, BACKLIGHT UNIT, AND BACKLIGHT PROVIDING METHOD FOR CONTROLLING A PLURALITY OF LED STRINGS - A display apparatus, a backlight unit, a backlight providing method for controlling a plurality of light emitting diode (LED) strings are provided. The display apparatus includes a display panel, and a backlight unit (BLU) which projects backlight onto the display panel, wherein the BLU includes a plurality of light emitting diode (LED) strings, and a power supply unit which supplies minimum voltage from among the voltages needed to operate the plurality of LED strings to the plurality of LED strings. Therefore, the plurality of LED strings can have the same luminance. | 05-05-2011 |
20110122167 | BACKLIGHT UNIT AND DISPLAY APPARATUS - A backlight unit and a display apparatus are provided. The display apparatus includes a power supply unit which outputs a first voltage; a light emitting unit which includes a first end connected to the power supply unit, and a second end, the first end receiving the first voltage from the power supply unit; and a compensation unit which includes a first end connected to the second end of the light emitting unit, and which compensates a deviation between the first voltage and a rated voltage of the light emitting unit. | 05-26-2011 |
20110122169 | DISPLAY APPARATUS AND BACKLIGHT UNIT - A display apparatus is provided. The display apparatus includes: a display panel; and a backlight unit which provides the display panel with backlight. The backlight unit includes: a converter which converts a voltage of a received power and outputs an output power, a plurality of light source modules which receives the output power from the converter, and a control unit which determines powering conditions to operate the plurality of the light source modules in a specific state for each of the plurality of light source modules, and controls the converter sequentially based on the determined powering conditions. | 05-26-2011 |
20110254836 | DISPLAY SYSTEM, SHUTTER 3D SPECTACLES AND DRIVING METHOD THEREOF - Disclosed are shutter 3D spectacles which are used for a display apparatus displaying a left eye image and a right eye image alternately, the shutter 3D spectacles including a left eye shutter and a right eye shutter which are open and closed; a signal receiver which receives a synchronization signal from the display apparatus to operate the left eye shutter and the right eye shutter; and a controller which opens and closes the left eye shutter and the right eye shutter based on the synchronization signal, and the controller controlling the left eye shutter and the right eye shutter to operate the 3D spectacles in one of a 2D mode and a 3D mode. The shutter 3D spectacles operates selectively in a 2D mode and a 3D mode and provides a 2D image for a user even when a 3D image is being displayed. | 10-20-2011 |
20120068982 | DISPLAY APPARATUS AND POWER CIRCUIT DEVICES THEREOF - A display apparatus and a power circuit device thereof are provided. The power circuit device includes: a transforming unit which outputs a first output current and a second output current in response to change of an input current; a first switching unit which switches to allow the input current to be selectively input; a first switch control unit which controls the first switching unit so that an operation voltage of the display apparatus reaches a first target value; a second switching unit which switches to allow the second output current to be selectively output; a backlight driving unit which drives the backlight based on the second output current; and a second switch control unit which controls the second switching unit so that a driving voltage of the backlight reaches a second target value. | 03-22-2012 |
20120085574 | Heat radiating substrate and method of manufacturing the same - Provided are a heat radiating substrate and a method of manufacturing the same. The heat radiating substrate includes a substrate having a via-hole, an anode oxide layer formed on the entire surface of the substrate having the via-hole through an anodizing process, a first circuit pattern formed on the substrate on which the anode oxide layer is formed, and a second circuit pattern formed at a lower part of the via-hole to be connected to the via-hole. Therefore, it is possible to simplify a circuit forming process and readily manufacture the heat radiating substrate by applying a metal anodic bonding process, without using a conventional adhesion layer and metal seed when the heat radiating substrate is manufactured. | 04-12-2012 |
20120161847 | SWITCHING DEVICE AND METHOD FOR PREVENTING MALFUNCTION OF THE SAME - The present invention provides a switching device and a method for preventing malfunction of the same. The switching device includes: a controller for outputting a plurality of digital control signals; a protecting unit connected to the controller for protecting all signals when the plurality of digital control signals outputted from the controller are simultaneously received at a state of ON; a gate driver connected to the protecting unit for generating a switch control signal by converting the control signal passed through the protecting unit; and a plurality of switches connected to the gate driver for individually performing ON•OFF operations according to each of the switching control signals. | 06-28-2012 |
20120257422 | DC/DC CONVERTER AND ELECTRIC GENERATING SYSTEM USING SOLAR CELL HAVING THE SAME - Disclosed herein is an electric generating system using a solar cell, including: a DC/DC converter that converts output voltage generated from a solar cell into DC voltage and has a converter switching device; a snubber device that has a snubber switch clamping voltage applied to the converter switching device; and a control device that detects the voltage applied to the converter switching device and controls an operation of the snubber switch according to a detected voltage level applied to the converter switching device, thereby increasing the efficiency of the electric generating system using a solar cell while reducing switching loss and conduction loss. | 10-11-2012 |
20120268970 | ELECTRIC GENERATING SYSTEM USING SOLAR CELL - An electric generating system using a solar cell improves the quality of output power by including a converter for converting an output voltage generated from the solar cell into a DC voltage in a pulse shape. An inverter converts the DC voltage in the pulse shape into an AC voltage and applies the AC voltage to a power system and a control device for determining whether an erroneous operation of the electric generating system using the solar cell is generated or not based on an output voltage of the solar cell, an output current of the solar cell and a voltage of the power system. At least one inverter switching device among a plurality of inverter switching devices performs a switching at a frequency higher than a frequency during a normal operation at an interval where the erroneous operation is generated. | 10-25-2012 |
20120299941 | DISPLAY APPARATUS AND CONTROL METHOD THEREOF - A display apparatus and a method thereof including: a display unit which displays an image based on a video signal; a battery unit which supplies battery power; and a controller which controls adjusts brightness of the image based on residual quantity of the battery unit when the battery power is supplied. | 11-29-2012 |
20130001686 | ELECTRO-STATIC DISCHARGE PROTECTION DEVICE - An Electro-Static Discharge (ESD) protection device is provided. The ESD protection device includes a metal-oxide semiconductor (MOS) transistor, including a source area having a surface on which a first silicide is formed, the source area including a source connecting area including a first connecting portion formed on the first silicide, and a source extension area, a gate arranged in parallel with the source area, and a drain area arranged in parallel with the source area and the gate, the drain area having a surface on which a second silicide is formed, the drain area including a drain connecting area formed opposite the source extension area, the drain connecting area including second connection portion formed on the second silicide, and a drain extension area formed opposite the source connecting area. | 01-03-2013 |
20130194525 | LIQUID CRYSTAL DISPLAY - A liquid crystal display including a first substrate; a second substrate facing the first substrate; a thin film transistor disposed on the first substrate; an organic layer disposed on the thin film transistor; a pixel electrode disposed on the organic layer; a lower alignment layer disposed on the pixel electrode; a common electrode disposed on the second substrate; and an upper alignment layer disposed on the common electrode, wherein a first free radical included in the organic layer and a second free radical included in at least one of the lower alignment layer and the upper alignment layer are radical bonded. | 08-01-2013 |
20150082897 | TOUCH SENSOR MODULE - Disclosed herein is a touch sensor module, including: a flexible cable provided with a terminal part; an adhesive layer formed to transfer an electrical signal by being contacted on one surface of the terminal part; a base substrate including an electrode pad which is formed to correspond to the terminal part and formed to be contact on the other surface of the adhesive layer; and a first passivation layer coating one end of the electrode pad. | 03-26-2015 |