Patent application number | Description | Published |
20080203929 | LIGHT GENERATING DEVICE, DISPLAY APPARATUS HAVING THE SAME AND METHOD OF DRIVING THE SAME - A light generating device includes a brightness detector. The brightness detector extracts a brightness data from an image data. The light generating device compensates the uniformity of a white light whenever the image data that is greater than a reference gray scale is input through the brightness detector. Thus, the light generating device may compensate the uniformity of the white light in real time, so that a display apparatus employing the light generating device may improve a high-quality image. | 08-28-2008 |
20090058792 | BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME, AND LOCALIZED DIMMING METHOD THEREOF - A backlight unit of a liquid crystal display device supplies light to one or more corresponding pixels of a liquid crystal display panel. The backlight unit includes a plurality of blocks formed into a matrix shape. Each block includes a light emitting diode module. The blocks in a row of the matrix are driven by a same row driving signal and the blocks in a column of the matrix are driven by a same column driving signal, to adjust luminance of the light supplied to the corresponding pixels. | 03-05-2009 |
20090109165 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A backlight unit for a display device that reduces power consumption while and display of undesirable artifacts in images is presented. The backlight unit is divided into a plurality of light-emitting regions, and a luminance control signal generator controls the luminance of light emitted by each of the light-emitting regions. The luminance of a particular light-emitting region is controlled by taking into account light interference from an adjacent light-emitting region. A display panel to display images through light emitted from the backlight unit, and a backlight driver drives the backlight unit. | 04-30-2009 |
20090109167 | LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING THE SAME - Provided are a liquid crystal display (LCD) and a method of driving the same. The LCD includes a timing controller which receives a first image signal corresponding to a first frame frequency and outputs a second image signal corresponding to a second frame frequency; a liquid crystal panel which receives the second image signal and displays an image using the second frame frequency; and a plurality of light-emitting blocks which provide light to the liquid crystal panel, wherein the light-emitting blocks are divided into a plurality of light-emitting groups, each group including at least one of the light-emitting blocks, and, in a first operation mode, a frame, which corresponds to the second frame frequency, includes an off section in which at least one of the light-emitting groups is turned off. | 04-30-2009 |
20090140665 | LIGHT SOURCE MODULE, METHOD FOR DRIVING THE LIGHT SOURCE MODULE, DISPLAY DEVICE HAVING THE LIGHT SOURCE MODULE - A light source module having a plurality of light source blocks corresponding to a plurality of display regions, a method for driving the light source module, and a display device having the light source module. The output brightness of each of the light source blocks is individually dimmed according to a dimming control signal. A dimming control unit determines the average gray level and inherent brightness of each of the respective display regions, calculates a threshold gray level of each display region by using its inherent brightness, outputs a fixed brightness as a dimming control signal when the average gray level of the display region is greater than the threshold gray level, and outputs a variable brightness based upon the inherent brightness value, as the dimming control signal when the average gray level of the display region is less than the threshold gray level. Accordingly, brightness spots can be reduced by performing the brightness dimming with consideration of the interference brightness caused by the adjacent light source blocks. | 06-04-2009 |
20090309858 | LIQUID CRYSTAL DISPLAY AND DRIVING METHOD OF THE SAME - A liquid crystal display (“LCD”) and a driving method of the same are provided. The LCD includes a photo sensor including a ring oscillator having cascade-connected inverters, wherein the output signal of the ring oscillator has a frequency varying according to the ambient luminance. | 12-17-2009 |
20100155729 | FAN-OUT UNIT AND THIN-FILM TRANSISTOR ARRAY SUBSTRATE HAVING THE SAME - A fan-out unit which can control a resistance difference among channels with efficient space utilization and a thin-film transistor (TFT) array substrate having the fan-out unit are presented. The fan-out unit includes: an insulating substrate; a first wiring layer which is formed on the insulating substrate and connected to a pad; a second wiring layer which is formed on the insulating substrate and connected to a TFT; and a resistance controller which is connected between the first wiring layer and the second wiring layer and includes a plurality of first resistors extending parallel to the first wiring layer and a plurality of second resistors extending perpendicular to the first resistors and alternately connecting to the first resistors, wherein the first resistors are longer than the second resistors. | 06-24-2010 |
20130170008 | ELECTROWETTING DISPLAY DEVICE HAVING BANKS OF DIFFERENT HYDROPHILICITIES AND METHOD FOR MANUFACTURING THE SAME - Disclosed is an electrowetting display device including a plurality pixels. Each pixel includes a pixel electrode, a hydrophobic layer, a hydrophobic fluid, and a bank adapted to limit the range of movement of the hydrophobic fluid. The bank has a hydrophobic bank surface and a hydrophilic bank surface, which face each other. The hydrophobic fluid is moved from the hydrophilic bank surface towards the hydrophobic bank surface by the application of a voltage to the pixel electrode. | 07-04-2013 |
20130215095 | ELECTROWETTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device includes a first electrode, a second electrode, a third electrode, a lyophobic layer, a first liquid, and a second liquid, where the lyophobic layer is lyophobic to the second liquid. A method of driving the display device includes: providing a first potential difference between the first electrode and the third electrode to thereby cause the first liquid to begin moving toward the second electrode; providing a second potential difference between the second electrode and the third electrode while reducing the first potential difference to thereby cause the first liquid to move toward the first electrode; and removing the second potential difference to thereby cause the first liquid to slow down in its movement toward the first electrode or to stop in its movement toward the first electrode. | 08-22-2013 |
20130257922 | LIGHT SOURCE MODULE, METHOD FOR DRIVING THE LIGHT SOURCE MODULE, DISPLAY DEVICE HAVING THE LIGHT SOURCE MODULE - A light source module having a plurality of light source blocks corresponding to a plurality of display regions, a method for driving the light source module, and a display device having the light source module. The output brightness of each of the light source blocks is individually dimmed according to a dimming control signal. A dimming control unit determines the average gray level and inherent brightness of each of the respective display regions, calculates a threshold gray level of each display region by using its inherent brightness, outputs a fixed brightness as a dimming control signal when the average gray level of the display region is greater than the threshold gray level, and outputs a variable brightness based upon the inherent brightness value, as the dimming control signal when the average gray level of the display region is less than the threshold gray level. | 10-03-2013 |