| Patent application number | Description | Published |
|---|
| 20080204397 | BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME - A backlight device for a liquid crystal display (LCD) panel displaying an image is disclosed. The backlight device includes a plurality of light source groups and a light source driving section. The light source groups include a predetermined number of light sources providing the LCD panel with light. The light source driving section sequentially and repeatedly provides power to the light source groups during a unit frame interval. | 08-28-2008 |
| 20090027894 | BACKLIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY APPARATUS USING THE SAME - A backlight assembly includes a bottom chassis, a flat fluorescent lamp, a frame and a reflecting member. The flat fluorescent lamp is supported in the bottom chassis, and the flat fluorescent lamp includes a plurality of discharge spaces to generate light. The frame is combined with the bottom chassis to hold the flat fluorescent lamp. The reflecting member in one embodiment is coupled to the frame to cover an edge portion of the flat fluorescent lamp. In another embodiment, the reflecting member is integral with the frame. | 01-29-2009 |
| 20090108774 | BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY APPARATUS HAVING THE SAME - In a backlight unit and an LCD apparatus having the backlight unit, in which the backlight unit includes a plurality of lamps and an inverter, the inverter provides the lamps with current. The inverter reduces current provided to the lamps to turn off the lamps. Therefore, currents are gradually decreased to reduce noise generated by the transformer when the lamps are turned off. | 04-30-2009 |
| 20090257216 | LAMP SOCKET, BACKLIGHT ASSEMBLY HAVING THE SAME AND DISPLAY DEVICE HAVING THE SAME - A lamp socket includes a socket housing and a plurality of power supply members. The socket housing has a plurality of connecting holes extended in a vertical direction. The power supply members are disposed in the connecting holes, respectively, and each of the power supply members includes a plurality of lamp connecting parts and an inverter connecting part. The lamp connecting parts are protruded from an upper surface of the socket housing and include first and second portions facing each other. The inverter connecting part is integrally formed with the lamp connecting parts, and is protruded from a lower surface of the socket housing. | 10-15-2009 |
| 20100141672 | LIGHT SOURCE DEVICE, DISPLAY APPARATUS HAVING THE LIGHT SOURCE DEVICE AND METHOD OF DRIVING THE LIGHT SOURCE DEVICE - A light source device includes a light source module having a light-emitting block, an image analysis part, a duty ratio calculation part, a duty ratio determination part and a signal generation part. The image analysis part extracts representative luminance data of the light-emitting block based on pixel data. The duty ratio calculation part calculates duty ratio data of the light-emitting block based on the representative luminance data. The duty ratio determination part generates determined duty ratio data of the light-emitting block based on the duty ratio data from a first period, and the signal generation part generates a driving signal having a duty ratio corresponding to the determined duty ratio data to drive the light-emitting block. | 06-10-2010 |
| 20100156777 | METHOD OF DRIVING LIGHT SOURCE, LIGHT SOURCE APPARATUS FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE LIGHT SOURCE APPARATUS - A method of driving a light source includes; driving a plurality of light-emitting blocks included in a light source module at a uniform luminance during an initial period in response to a power-on signal, and subsequently driving the plurality of light-emitting blocks individually in accordance with respective luminances of a plurality of image blocks aligned with each of the plurality of light-emitting blocks after the initial period. | 06-24-2010 |
| 20100176736 | METHOD OF DRIVING A LIGHT SOURCE, LIGHT SOURCE ASSEMBLY FOR PERFORMING THE METHOD, AND LIQUID CRYSTAL DISPLAY APPARATUS HAVING THE SAME - A method of driving a light source includes; converting an externally supplied direct current voltage into a first alternating current voltage, boosting the first alternating current voltage to a second alternating current voltage having a higher voltage than the first alternating current voltage, turning on the light source using the second alternating current voltage, detecting an arc noise detection voltage by adding arc noise generated from a high voltage terminal of the light source and arc noise generated from a low voltage terminal of the light source, and blocking the high voltage from being provided to the light source based on the detected arc noise detection voltage. | 07-15-2010 |
| 20100188435 | METHOD FOR DRIVING A LIGHT SOURCE, LIGHT SOURCE APPARATUS FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE LIGHT SOURCE APPARATUS - A method of driving a light source includes: determining a location of pixel data of a display relative to a plurality of light-emitting blocks of a light source, obtaining a plurality of luminance values of the light-emitting blocks corresponding to the location by using a lookup table (LUT) storing the luminance values of the light-emitting blocks, generating a plurality of histograms corresponding to the light-emitting blocks, determining a plurality of target luminance values of the light-emitting blocks using the histograms, and driving the light-emitting blocks using the determined target luminance values. The luminance values of the light-emitting blocks are based on the location of the pixel data within an image block of the display corresponding to each light-emitting block. Each of the histograms indicates a frequency of each of the luminance values of a respective one of the light-emitting blocks. | 07-29-2010 |
| 20100265231 | METHOD OF SUPPLYING POWER, POWER SUPPLY APPARATUS FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE APPARATUS - A power supply apparatus includes an AC-DC rectifier, a transformer, a feedback inductor, a resonant unit, and a primary and auxiliary switch. The AC-DC rectifier rectifies an input voltage. The transformer includes a primary coil having a first primary coil and an isolated second primary coil, and transforms a first voltage of the primary coil into a second voltage of the secondary coil. The feedback inductor is connected to a tap between the first primary coil and second primary coil and an output of the AC-DC rectifier. The resonance unit is connected in parallel with the secondary coil and is configured to output an output voltage by rectifying the second voltage provided from the secondary coil. The primary switch and secondary switch are connected in parallel between the transformer and AC-DC rectifier. | 10-21-2010 |
| 20100321924 | LAMP SOCKET, BACKLIGHT ASSEMBLY HAVING THE SAME AND DISPLAY DEVICE HAVING THE SAME - A lamp socket includes a socket housing and a plurality of power supply members. The socket housing has a plurality of connecting holes extended in a vertical direction. The power supply members are disposed in the connecting holes, respectively, and each of the power supply members includes a plurality of lamp connecting parts and an inverter connecting part. The lamp connecting parts are protruded from an upper surface of the socket housing and include first and second portions facing each other. The inverter connecting part is integrally formed with the lamp connecting parts, and is protruded from a lower surface of the socket housing. | 12-23-2010 |
