Patent application number | Description | Published |
20080204390 | DISPLAY DRIVING DEVICE AND METHOD AND LIQUID CRYSTAL DISPLAY APPARATUS HAVING THE SAME - A liquid crystal display apparatus includes a liquid crystal panel assembly having pixels arranged in a matrix form, which have a first group of pixels and a second group of pixels, gate lines having a first group of gate lines and a second group of gate lines that are connected with the first group of pixels and the second group of pixels, respectively, and data lines each of which is connected with one of the first group of pixels and one of the second group of pixels in every row of the matrix form. The liquid crystal display apparatus also includes a signal controller that receives input image signals and generates two groups of image data, a data driver that receives the two groups of image data and provides data voltages corresponding to the image data to the data lines, and a gate driving unit including a first gate driver that provides first gate-on signals to the first group of gate lines and a second gate driver that provides second gate-on signals to the second group of gate lines. | 08-28-2008 |
20080231606 | DISPLAY DEVICE AND CONTROL METHOD OF THE SAME - A display device includes a display panel including a plurality of pixels, a sensing electrode generating a sensing signal in response to an external stimulus, a sensing line connected to the sensing electrode, a sensing driver connected to the sensing line, receiving the sensing signal from the sensing line and storing the sensing signal as a specific register value, and outputting a position pulse according to the specific register value, and a signal controller determining a position of the external stimulus based on the position pulse and a predetermined clock signal. | 09-25-2008 |
20080284698 | LIQUID CRYSTAL DISPLAY DEVICE - A driver circuit drives display device and LCD device has a driver circuit that includes driving stages and dummy stage. The driving stage includes output and control terminals. The output terminal of the present stage is connected to the control terminal of the previous state to be cascade-connected each other. The driving stage outputs driving signal for controlling the switching device arranged on the display device through the output terminal. The dummy stage includes dummy output terminal and dummy control terminal. The dummy output terminal is connected to the control terminal of the last driving stage to output dummy output signal for turning on or off the last driving stage. The dummy control terminal is connected to the dummy output terminal to be turned on or off by the dummy output signal. The delay of signals is reduced, thereby enhancing display quality. | 11-20-2008 |
20090021502 | DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME - A display device includes a display panel, a gate clock generator and a gate driver. The display panel includes a plurality of gate lines connected to a plurality of pixels. The gate clock generator generates a plurality of gate clock signals in which a width of a logic high period of a first gate clock signal is smaller than that of other gate clock signals during one frame period. The gate driver sequentially applies gate turn-on signals to the plurality of gate lines according to the gate clock signal and a gate clock bar signal having a phase opposite to the other gate clock signals. | 01-22-2009 |
20090021509 | FLAT PANEL CRYSTAL DISPLAY EMPLOYING SIMULTANEOUS CHARGING OF MAIN AND SUBSIDIARY PIXEL ELECTRODES - A display system includes a display panel having a plurality of pixel units, each of the pixel units having first and second divided pixel parts; a first driver for applying a first gate signal to the first divided pixel part; and a second driver for applying a second gate signal to the second divided pixel part, wherein the first and second drivers are integrally formed in the display panel and apply the first and second gate signals to be at least partially time-overlapped through independent driving. | 01-22-2009 |
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 |
20090109166 | LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING THE SAME - A liquid crystal display (LCD) and a method of driving the same are provided. The LCD includes a liquid crystal panel; and a plurality of light-emitting blocks providing light to the liquid crystal panel, the light-emitting blocks including light-emitting elements and wherein a peak value of current flowing through each of the light-emitting elements is controlled according to operation modes. | 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 |
20090109168 | BACKLIGHT DRIVER AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - A backlight driver and liquid crystal display device including the same are disclosed. The backlight driver, in accordance with an embodiment, includes a driving-voltage-generating unit supplying a driving voltage to a light-emitting unit, or cutting off the supply of the driving voltage to the light-emitting unit, in response to a pulse width modulation signal; a pulse-width-modulation-signal-generating unit supplying the pulse width modulation signal to the driving-voltage-generating unit, and stopping its operation when an error occurs in the light-emitting unit; and an automatic reset unit supplying a reset signal to the pulse-width-modulation-signal-generating unit, when the pulse-width-modulation-signal-generating unit stops its operation, to restart the operation of the pulse-width-modulation-signal-generating unit. | 04-30-2009 |
20090134814 | BACKLIGHT UNIT, DISPLAY DEVICE COMPRISING THE SAME, AND CONTROL METHOD THEREOF - A backlight unit includes a plurality of light source units arranged in a matrix form, a light source controller outputting a dimming signal to control a brightness of the light source units and a latch signal to control a light source unit row of the plurality of light source units to be sequentially driven according to a predetermined scanning period, and a plurality of light source driving units connected to light source unit columns of the plurality of light source units and supplying driving signals corresponding to the dimming signal to the light source units in the light source unit columns. | 05-28-2009 |
20090174650 | DISPLAY DEVICE AND CONTROL METHOD THEREOF - A display device including a display panel, a sensing electrode that is disposed in a matrix pattern and outputs a sensing signal with respect to an external stimulus, a calculator that divides the display panel into a plurality of detection regions based on a coordinate of a first stimuli group outputting a sensing signal with respect to a first stimulus, and a position determiner is presented. The position determiner determines a coordinate of a second stimuli group outputting a sensing signal with respect to a second stimulus and designates the coordinate as a stimulus position if the second stimulus is generated from a selection detection region within predetermined detection time after the first stimulus. | 07-09-2009 |
20090243989 | DISPLAY APPARATUS - A display apparatus that includes a controller, a gate driver, a data driver, and a gamma voltage generator is presented. The controller generates image data and a data clock to drive a display unit based on original data and an original control signal received from an exterior. The gate driver provides an image data signal to a data interconnection provided in the display unit. The data driver provides a gate signal to a gate interconnection provided in the display unit. The gamma voltage generator generates gamma voltages serving as a reference in response to the data driver providing the gate signal to the display unit. The gamma voltage generator selectively outputs sub-reference voltages, which are divided from an external reference voltage, and a specific voltage, which is generated from the gamma voltage generator, as the gamma voltages. | 10-01-2009 |
20100020057 | POWER CIRCUIT AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A power circuit for a liquid crystal display includes a voltage divider which generates a voltage-divided voltage between a first power source and a second power source, an operational amplifier which receives the voltage-divided voltage to output a driving voltage, a first switch connected between the first power source and a common node, and a second switch connected between the second power source and the common node. The first switch provides a first current path between the first power source and the common node in response to the driving voltage, and the second switch provides a second current path between the second power source and the common node in response to the driving voltage. | 01-28-2010 |
20100060619 | GATE DRIVE DEVICE FOR DISPLAY DEVICE AND DISPLAY DEVICE HAVING THE SAME - A gate drive portion for a display device including multiple pixels having first and second sub-pixels includes a first shift register generating a first output signal in response to a first gate clock signal, a second shift register generating a second output signal in response to a second gate clock signal, a level shifter coupled to the first and second shift registers and amplifying the first and second output signals, and an output buffer coupled to the level shifter and generating first and second gate signals. The first gate signal is generated in synchronization with the first gate clock signal and the second gate signal is generated in synchronization with the second gate clock signal. Accordingly, the charging time of the first and second sub-pixels may be improved by separately driving the odd-numbered and even-numbered sub-pixels and the visibility of the LCD device may also be improved. | 03-11-2010 |
20100085296 | BACKLIGHT ASSEMBLY - A backlight assembly includes a light source unit, at least one block driving unit, a controller unit and a noise removing circuit. The light source unit includes a plurality of dimming blocks generating light. The block driving unit drives the dimming blocks. The controller unit controls the block driving unit. The noise removing circuit is connected to the block driving unit and the controller unit to prevent noise from being applied to a reset terminal of the block driving unit | 04-08-2010 |
20100110058 | DISPLAY APPARATUS - A display apparatus includes; a data driver integrated in one chip and which outputs data signals; a gate driver which sequentially outputs gate signals, a display panel which includes; a plurality of data lines which receive the data signals, a plurality of gate lines which receive the gate signals, and a plurality of pixels connected to a corresponding gate line and a corresponding data line, a voltage generator which generates a common voltage and a storage voltage and provides them to the display panel, and a voltage compensator which receives the storage voltage fedback from the display panel and generates a compensation signal, wherein the display panel further includes a feedback line which provides the voltage compensator with the storage voltage, and wherein the feedback line is electrically connected to the voltage compensator through the data driver. | 05-06-2010 |
20100141622 | THIN FILM TRANSISTOR ARRAY PANEL AND DISPLAY DEVICE INCLUDING THE SAME - Gate-driving circuitry of a thin film transistor array panel is formed on the same plane as a display area of the transistor array panel. The gate-driving circuitry includes driving circuitry and signal lines having apertures. Thus, a sufficient amount of light, even though illuminated from the thin film transistor array panel side, can reach a photosetting sealant overlapping at least in part the gate-driving circuitry. The thin film transistor array panel and the counter panel are put together air-tight and moisture-tight. Consequently, the gate-driving circuitry can avoid corrosion by moisture introduced from outside. Gate-driving circuitry malfunctions can also be reduced. | 06-10-2010 |
20100156869 | GATE DRIVING DEVICE AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A gate driving device includes a plurality of stages, a first dummy stage connected to the plurality of stages and a second dummy stage connected to the first dummy stage. Stages of the plurality of stages are cascaded. The first dummy stage includes a first charge unit which receives a first input signal from a previous stage of the plurality of stages and is thereby charged, and a first pull-up transistor which outputs a clock signal when the first charge unit reaches a first charge level. The second dummy stage includes a second charge unit which receives a second input signal from the first dummy stage and is thereby charged, and a second pull-up transistor which outputs the clock signal when the second charge unit reaches a second charge level higher than the first charge level. | 06-24-2010 |
20100277206 | GATE DRIVE CIRCUIT AND METHOD OF DRIVING THE SAME - In a gate drive circuit including stages which are cascaded and which output gate signals each of the stages includes a first node, an output part, a first holding part and a second holding part. A voltage of the first node is converted to a high voltage in response to one of a vertical start signal and a carry signal of one of previous stages. The output part outputs a first clock signal as a gate signal through an output terminal in response to the high voltage of the first node. The first holding part applies a first low voltage to the output terminal, in response to a gate signal output from at least one of following stages. The second holding part applies a second low voltage, which is less than the first low voltage, to the first node in response to a gate signal output from at least one stage among following stages. | 11-04-2010 |
20110181583 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device according to an embodiment of the present invention includes: a pixel including a first subpixel and a second subpixel; a first signal line connected to the first subpixel and transmitting a first signal; a second signal line connected to the second subpixel and transmitting a second signal; a third signal line intersecting the first and the second signal lines, connected to at least one of the first and the second subpixels, and transmitting a third signal; and a fourth signal line intersecting the first and the second signal lines and transmitting a fourth signal, wherein the first subpixel and the second subpixel are supplied with data voltages having different magnitude, and the data voltages applied to the first and the second subpixels are originated from a single image information. | 07-28-2011 |
20110254882 | DISPLAY DEVICE - A display device with reduced power consumption has pixels coupled with data lines and arranged in a matrix, a signal controller processing input image signals and outputting output image signals, and a data driver applying data voltages, corresponding to output image signals, to the data lines. When all the input image signals have either a first or second value, the output image signals have the first value. The signal controller generates a polarity signal for determining data voltage polarity, and when all the input image signals have either a first or second value, data voltages corresponding to the input image signals have a polarity equivalent to a polarity of previously applied data voltages. The signal controller generates a control signal for controlling the data driver's clock synchronization circuit, and the control signal halts the clock synchronization circuit when an operating frequency is lower than a predetermined value. | 10-20-2011 |
20130215097 | DISPLAY DRIVING DEVICE AND METHOD AND LIQUID CRYSTAL DISPLAY APPARATUS HAVING THE SAME - A liquid crystal panel assembly having a first group of pixels and a second group of pixels, gate lines having a first group of gate lines and a second group of gate lines that are connected with the first group of pixels and the second group of pixels, respectively, and data lines each of which is connected with one of the first group of pixels and one of the second group of pixels in every row. Further including a signal controller that receives input image signals and generates two groups of image data, a data driver that receives the two groups of image data, and a gate driving unit including a first gate driver that provides first gate-on signals to the first group of gate lines and a second gate driver that provides second gate-on signals to the second group of gate lines. | 08-22-2013 |
20130286301 | LCDS WITH INTEGRATED TOUCH PANELS - An LCD with an integrated touch panel that prevents sensor malfunction by eliminating coupling noises includes an insulating substrate, a plurality of gate lines formed on the insulating substrate so as to extend in a first direction, a plurality of data lines formed in a second direction so as to intersect the plurality of gate lines, a plurality of thin film transistors (TFTs), each formed at an area defined by the gate lines and the data lines, a plurality of sensor lines formed in the same directions as the gate lines and the data lines, and a plurality of dummy lines formed in the same directions as the sensor lines. | 10-31-2013 |
20130328750 | DISPLAY APPARATUS - A display apparatus includes; a data driver integrated in one chip and which outputs data signals; a gate driver which sequentially outputs gate signals, a display panel which includes; a plurality of data lines which receive the data signals, a plurality of gate lines which receive the gate signals, and a plurality of pixels connected to a corresponding gate line and a corresponding data line, a voltage generator which generates a common voltage and a storage voltage and provides them to the display panel, and a voltage compensator which receives the storage voltage fedback from the display panel and generates a compensation signal, wherein the display panel further includes a feedback line which provides the voltage compensator with the storage voltage, and wherein the feedback line is electrically connected to the voltage compensator through the data driver. | 12-12-2013 |
20140204006 | Display device - A display device includes a pixel matrix having pixel rows and pixel columns and including pixels having switching elements positioned alternately at a corner near an upper and a lower side of each pixel row and positioned alternately at a corner near an upper and a lower side of and alternately at a corner near a left and a right side of each pixel column; multiple pairs of gate lines transmitting a gate-on voltage; and multiple data lines transmitting data voltages, wherein each pair of gate lines are disposed at the upper and lower sides of each pixel row with the pixels in each row connected to the gate line positioned nearest the respective switching element, and each data line is disposed between adjacent pairs of pixel columns and connected to pairs of pixels where one pixel of the pair has a switching element positioned nearest the respective data line. | 07-24-2014 |
20140285543 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device according to an embodiment of the present invention includes: a pixel including a first subpixel and a second subpixel; a first signal line connected to the first subpixel and transmitting a first signal; a second signal line connected to the second subpixel and transmitting a second signal; a third signal line intersecting the first and the second signal lines, connected to at least one of the first and the second subpixels, and transmitting a third signal; and a fourth signal line intersecting the first and the second signal lines and transmitting a fourth signal, wherein the first subpixel and the second subpixel are supplied with data voltages having different magnitude, and the data voltages applied to the first and the second subpixels are originated from a single image information. | 09-25-2014 |