Patent application number | Description | Published |
20090184906 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A display device and a method of driving the same are provided according to one or more embodiments. According to an embodiment, the display device includes a display panel including a plurality of display blocks arranged in the form of a matrix; a plurality of lighting blocks emitting light to the display panel, each of the lighting blocks arranged so as to correspond to at least one row of the matrix and having adjustable light luminance; and a signal control unit adapted to receive an image signal, determine display block luminance of the respective display blocks when an image is displayed on the respective display blocks in accordance with the image signal, determine the light luminance of the respective lighting blocks by using the display block luminance of some display blocks corresponding to the respective lighting blocks, correct the image signal by using the light luminance and the display block luminance, and provide the corrected image signal to the display panel. | 07-23-2009 |
20090185393 | LIGHT SOURCE MODULE, METHOD OF FABRICATING THE SAME, AND DISPLAY DEVICE HAVING THE LIGHT SOURCE MODULE - A light source module includes a mounting substrate including at least two exposed metal lines, a light-emitting diode (LED) including two electrodes disposed corresponding to the at least two exposed metal lines, and an anisotropic conductive film (ACF) provided on the mounting substrate, the ACF electrically connecting the at least two exposed metal lines to the two electrodes, wherein the ACF comprises an insulation body, and a plurality of conductive particles dispersed in the insulation body and insulated from each other, and an insulation of the conductive particles disposed between the two exposed metal lines and the two electrodes of the LED is prevented in at least a first direction. | 07-23-2009 |
20090267890 | METHOD OF LOCAL DIMMING A LIGHT SOURCE, LIGHT SOURCE APPARATUS FOR PERFORMING THE METHOD, AND DISPLAY APPARATUS HAVING THE LIGHT SOURCE APPARATUS - In a method of local dimming a light source, which includes driving a light source including a plurality of light-emitting blocks by individually driving the light-emitting blocks, the dimming level of each light-emitting block is determined. In the method, the luminance of a first light-emitting area may be adjusted according to a size of the first light-emitting area corresponding to a display area in which an image having a maximum luminance is displayed. | 10-29-2009 |
20090310063 | METHOD OF DRIVING A LIGHT SOURCE, BACKLIGHT ASSEMBLY FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE BACKLIGHT ASSEMBLY - In a method of driving a light source, initial driving signals are applied to a plurality of color light sources in response to a power-on signal from an external device. During a predetermined set time period, light amount control signals for controlling an amount of light generated by the color light sources are generated using a predetermined function with reference signals and first sensing signals generating by sensing the amount of the light generated by the color light sources driven by the initial driving signals. Then, compensated driving signals, which are compensated based on the light amount control signal, are applied to the color light sources to compensate the amount of the light generated by the color light sources. | 12-17-2009 |
20100007682 | LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING THE SAME - A liquid crystal display (“LCD”) includes; a liquid crystal panel including a plurality of display blocks, a light-emitting unit which provides light to the liquid crystal panel and includes a plurality of light-emitting blocks corresponding to the display blocks, respectively; and a timing controller which provides an optical data signal for controlling the light-emitting blocks, wherein the optical data signal includes a plurality of scan signals and a plurality of dimming signals which are alternatingly arranged, and each of the dimming signals controls a luminance of a corresponding one of the light-emitting blocks. | 01-14-2010 |
20100103342 | BACKLIGHT ASSEMBLY, LIQUID CRYSTAL DISPLAY HAVING THE BACKLIGHT ASSEMBLY AND METHOD OF MANUFACTURING THE LIQUID CRYSTAL DISPLAY - A backlight assembly includes a waveguide plate guiding light, a first light-emitting module disposed on a first side of the waveguide plate, the first light-emitting module including a plurality of first light-emitting blocks, a second light-emitting module disposed on a second side of the waveguide plate, the second light-emitting module including a plurality of second light-emitting blocks, and a plurality of optical drivers controlling luminance levels of the first light-emitting blocks and the second light-emitting blocks, wherein at least one of the first light-emitting blocks, at least one of the second light-emitting blocks, and at least one of the optical drivers are connected to each other | 04-29-2010 |
20100123741 | METHOD OF 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 in a normal mode and an increased luminance mode, based on a gradation data of an image signal, by using driving blocks each having a plurality of light-emitting blocks, includes applying, during the increased luminance mode, both a first driving voltage which drives a first driving block of the driving blocks during the normal mode, and a second driving voltage which drives a second driving block of the driving blocks during the normal mode, to the first driving block to increase a luminance of the first driving block when the first driving block is driven by a luminance greater than a luminance corresponding to the gradation data of the image signal. | 05-20-2010 |
20100134512 | LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A liquid crystal display device and a method of driving the same are provided for one or more embodiments. The liquid crystal display device includes: a liquid crystal panel including a plurality of display blocks and displaying an image in response to image signals; a plurality of light-emitting blocks emitting light to the liquid crystal panel and corresponding to the plurality of display blocks; a first look-up table including a normalized value obtained by normalizing an initial duty ratio corresponding to the brightness of the image to a maximum duty ratio corresponding to the maximum brightness of the image; and a timing controller receiving the normalized value corresponding to each of the light-emitting blocks from the first look-up table and using the normalized value to provide an optical data signal corresponding to each of the light-emitting blocks. | 06-03-2010 |
20100295876 | DISPLAY APPARATUS - In a display apparatus according to one or more embodiments, a boosting circuit boosts an input voltage to a backlight driving voltage, and a backlight unit receives the backlight driving voltage to generate light. A backlight driving circuit controls the boosting circuit in response to a dimming signal and compensates a plurality of feedback voltages fedback from the backlight unit to output a panel driving voltage. A panel driving circuit receives the panel driving voltage from the backlight driving circuit to output a data voltage corresponding to an image signal and receives a gate driving voltage to generate a gate voltage. A display panel displays an image in response to the gate voltage and the data voltage. Accordingly, a number of the boosting circuits for the display apparatus may decrease, thereby reducing a manufacturing cost of the display apparatus. | 11-25-2010 |
20100309194 | METHOD OF DIMMING A LIGHT SOURCE AND DISPLAY APPARATUS FOR PERFORMING THE METHOD - A method of dimming a light source module including a light guide plate, a first light emitting module including first to k-th light source blocks, wherein the first light emitting module is disposed on a first edge of the light guide plate, and a second light emitting module including first to m-th light source blocks, the second light emitting module being disposed on a second edge of the light guide plate, the second edge disposed opposite the first , the method including; generating a first group of driving signals and a second group of driving signals based on an image signal and driving the first to k-th light source blocks using the first group of the driving signals during a first period in a reference period and driving the first to m-th light source blocks using the second group of driving signals during a second period in the reference period. | 12-09-2010 |
20110037685 | DISPLAY APPARATUS INCLUDING SUB-LIGHT SOURCE GROUPS - A display apparatus includes; a display panel which displays an image using a light, wherein the display panel is divided into a plurality of display areas corresponding to the image, a plurality of main-light source groups which each have a plurality of light sources, wherein the main-light source groups are arranged respectively corresponding to the display areas to provide the light thereto, a power source circuit is connected to each main-light source groups to provide a corresponding driving power to each of the main-light source groups, and a plurality of sub-light source groups, each of which is arranged between two adjacent main-light source groups and wherein each sub-light group receives the driving power applied to each of the two main-light source groups adjacent thereto to provide a light corresponding to an average brightness of the two adjacent main-light source groups to a border area between two adjacent display areas. | 02-17-2011 |
20110181625 | BACKLIGHT ASSEMBLY AND DISPLAY APPARATUS HAVING THE SAME - A backlight assembly includes; a plurality of light source strings which receive a driving voltage to generate a light, a driving circuit including a channel terminal commonly connected to output terminals of the plurality of light source strings and which receives a feedback voltage through the channel terminal to control the driving voltage according to the feedback voltage, and a current detection circuit connected to the output terminals of the plurality of light source strings to receive currents from the plurality of light source strings and which turns off the driving circuit when at least one of the received currents is larger than a predetermined reference current. | 07-28-2011 |