Patent application number | Description | Published |
20080252624 | Liquid crystal display device - Disclosed herein is a liquid crystal display device which is capable of reducing the number of data drive integrated circuits (ICs) to curtail a production cost. The liquid crystal display device includes a plurality of pixel cells formed respectively in areas defined by a plurality of gate lines and a plurality of data lines, a first unit pixel including at least three of the pixel cells, the at least three pixel cells being connected to different ones of the data lines, and a second unit pixel including at least three of the pixel cells other than the at least three pixel cells of the first unit pixel, the at least three pixel cells of the second unit pixel being connected respectively to the different data lines to which the at least three pixel cells of the first unit pixel are connected, wherein the first and second unit pixels are arranged in a direction of the data lines and connected to different ones of the gate lines. A plurality of adjacent pixel cells expressing the same colors or different colors on horizontal lines, among the pixel cells, are connected in common to the same data lines. | 10-16-2008 |
20080266225 | LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A liquid crystal display device and a method of driving the same are discussed. The liquid crystal display device according to an embodiment comprises a liquid crystal panel including a plurality of pixel units arranged in a matrix configuration; red, green and blue pixel cells provided in the pixel units respectively; a data driver to supply data to pixel cells included in each pixel unit, so as to realize the adjacent pixel units displayed with black and white; and a gate driver to drive the pixel cells included in each pixel unit, so as to make the green pixel cell in the pixel unit of displaying the white supplied with corresponding data under condition of that a data line connected to the corresponding green pixel cell is previously charged with the data corresponding to the pixel cell included in the pixel unit of displaying the black. | 10-30-2008 |
20080309687 | Data driving apparatus and method for liquid crystal display device - A data driving apparatus and method for a liquid crystal display (LCD) device is provided, the apparatus including: a liquid crystal panel; a timing controller configured to output control signals for controlling the driving of a gate driving unit and a data driving unit; a gate driving unit configured to output a gate on signal to gate lines of the liquid crystal panel; a data driving unit configured to drive data lines of the liquid crystal panel, the data driving unit providing an overdriving signal to at least one of a pair of pixel signals of the same polarity applied to adjacent data lines for supply to longitudinally adjacent pixels of the liquid crystal panel, and wherein the data driving unit drives the liquid crystal panel according to a longitudinal two-dot inversion polarity pattern. | 12-18-2008 |
20090080593 | Shift register - A shift register includes a first node controller disposed at one side of the non-display region, the first node controller controlling a signal state of a first node, at least one pull-up switching device disposed at the one side of the display region, the pull-up switching device outputting an output pulse according to the signal state of the corresponding first node and supplying it to a corresponding gate line, a second node controller disposed at the other side of the display region, the second node controller controlling a signal state of a second node, and a first pull-down switching device disposed at the other side of the display region, the first pull-down switching device outputting a discharging voltage according to the signal state of the second node and supplying it to the other side of the corresponding gate line. | 03-26-2009 |
20090256794 | SHIFT REGISTER - A shift register includes a plurality of stages for sequentially outputting scan pulses to drive a plurality of gate lines, wherein each of the stages includes a set node, a pull-up switching device for outputting a corresponding scan pulse according to a logic state of the set node, at least two reset nodes, at least two pull-down switching devices, each of the pull-down switching devices being connected to a corresponding reset node to output an off voltage according to a voltage level of the corresponding reset node, and a node controller for controlling logic states of the nodes of a corresponding stage and logic states of the nodes of stages different from the corresponding stage together, wherein the node controllers of the stages control an output order of the scan pulses from the stages according to a forward voltage and reverse voltage having opposite phases. | 10-15-2009 |
20100214279 | SHIFT REGISTER - A shift register which is capable of minimizing a spike voltage is disclosed. The shift register includes a plurality of stages, each including a plurality of nodes, a scan pulse output unit controlled according to voltages at the nodes for outputting a scan pulse and supplying it to a corresponding gate line through a scan output terminal, a carry pulse output unit controlled according to the voltages at the nodes for outputting a carry pulse and supplying it to an upstream stage and a downstream stage through a carry output terminal, a node controller for controlling voltage states of the nodes in response to a carry pulse from the upstream stage and a carry pulse from the downstream stage, and a discharging unit connected to any one of a plurality of clock transfer lines and the scan output terminal for discharging a spike voltage of the scan output terminal. | 08-26-2010 |
20110169874 | DISPLAY APPARATUS - A display apparatus is disclosed. The display apparatus includes: a plurality of scan signal lines and a plurality of data signal lines that cross each other; a plurality of pixels formed at each crossing of the scan signal lines and the data signal lines, wherein each of the pixels includes sub-pixels that display red color, green color, blue color and white color in response to a scan signal from the scan signal lines and a data signal from the data signal lines, wherein the sub-pixels are arranged in a 2×2 matrix; a scan signal driving circuit including a plurality of stages that supplies the scan signal to the scan signal lines; and a data signal driving circuit that supplies the data signal to the data signal lines, wherein the scan signal driving circuit, the pixels, the scan signal lines and the data signal lines are formed on a same substrate. | 07-14-2011 |
20110249218 | LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR FABRICATING THE SAME - A liquid crystal display (LCD) device partially or substantially blocks light from a light source from exciting a semiconductor layer. The LCD device includes a substrate, a semiconductor layer, a light-shielding layer, and a light source. The light source directs light toward a lower surface of the substrate. The light-shielding layer is formed between the substrate and the semiconductor layer. Some or all of the light directed towards the semiconductor layer by the light source is blocked by the light-shielding layer. | 10-13-2011 |
20130088417 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME - An OLED display device is provided. The OLED display device includes a first transistor connected to a data line and a first node; a second transistor connected to the first node and a second node; a third transistor connected to a reference voltage terminal and a third node; a fourth transistor connected to an initialization voltage terminal and the second node; a fifth transistor connected to the reference voltage terminal and the second node; a driving transistor; and an OLED connected to a low-level power supply voltage terminal and the second node. The driving transistor has a source connected to the second node, a gate connected to the third node, and a drain connected to a high-level power supply voltage terminal. | 04-11-2013 |
20130235004 | GATE DRIVER AND IMAGE DISPLAY DEVICE INCLUDING THE SAME - A gate driver includes a plurality of driving units each including a first sub driving unit and a second sub driving unit, wherein output terminals of the first and second sub driving units are connected to first and second sub gate lines, respectively, and first and second sub outputs that are the outputs of the first and second sub driving units are respectively transferred to gate terminals of a first switching transistor and a second switching transistor formed in a pixel area of a display area, and wherein drain and source terminals of the first switching transistor are respectively connected to drain and source terminals of the second switching transistors. | 09-12-2013 |
20130257831 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - An organic light emitting display device includes: a plurality of pixel regions. Each of the pixel regions includes: a first transistor configured to apply a data voltage on a first adjacent data line to a first node in response to a scan signal on the primary scan line; a second transistor configured to apply the data voltage on the first adjacent data line to the first node in response to a sensing signal on the secondary scan line; and a third transistor configured to detect a sensing voltage and apply the sensing voltage to a second adjacent data line, The data driver compares the sensing voltage and the data voltage and compensates for the data voltage of next frame, and the scan signal and the sensing signal are generated in different intervals of a single frame. | 10-03-2013 |
20130300776 | DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - A display device includes a display panel; and a control signal circuit that supplies a control signal to the display panel. The controls signal circuit includes a plurality of driving units and a plurality of reverse circuit, wherein the driving units are supplied with a clock signal and generate a first output pulse that has the same waveform as the clock signal, and wherein the reverse circuit reverses the first output pulse to generate a second output pulse that is an output of the control signal circuit. | 11-14-2013 |
20130335391 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND METHOD OF DRIVING THE SAME - An organic light emitting diode display device may include a first transistor connected between a data line and a first node; a second transistor connected between the first node and a second node; a third transistor connected between a reference voltage line and a third node; a fourth transistor connected between a initialization voltage terminal and the second node; a driving transistor having a source electrode connected to the second node, a gate electrode connected to the third node, and a drain electrode connected to a high electric potential voltage terminal; a first capacitor connected between the first node and the drain or source electrode of the driving transistor; a second capacitor connected between the first node and the third node; and a light emitting diode connected to a low electric potential voltage terminal and to the second node. | 12-19-2013 |
20140077725 | ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME - An organic electroluminescent display device includes an organic electroluminescent display panel including top emission pixels to emit light toward a top side of a substrate and bottom emission pixels to emit light toward a bottom side of the substrate, the top emission pixels and the bottom emission pixels being formed such that corresponding ones thereof share a common transparent area, a scan driver for supplying a scan signal to scan lines each connected to selected ones of the top and bottom emission pixels, and a data driver for supplying a data voltage to data lines each connected to selected ones of the top and bottom emission pixels. The top emission pixels and the bottom emission pixels are formed on the substrate to alternate with each other on a pixel basis, on a scan line basis, or a data line basis. | 03-20-2014 |
20140085285 | GATE SHIFT REGISTER AND DISPLAY DEVICE COMPRISING THE SAME - According to an embodiment, a gate shift register includes a plurality of stages cascade-connected to each other. An nth one of the stages includes: a pull-up transistor that outputs any one of gate shift clocks as an nth scan pulse of a gate high voltage in accordance with the potential of a Q node; a pull-down transistor that is connected to the pull-up transistor through an output node, and outputs a low-potential voltage as an nth scan pulse of a gate low voltage in accordance with the potential of a QB node; and a switching circuit that charges and discharges the Q node and the QB node, respectively, or vice versa in response to a set signal and a reset signal, wherein an adaptively adjusted variable high-potential voltage is applied to the QB node to correspond to a shift in the threshold voltage of the pull-down transistor. | 03-27-2014 |
20140183479 | TRANSPARENT ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD FOR MANUFACTURING THE SAME - Provided are an organic light emitting display device and a method for manufacturing the same. The organic light emitting display device includes a plurality of pixels, each including a set of sub pixels. Each of the sub pixels has an emissive area for emitting light and a transmissive area for passing the external light. At least two sub pixels are symmetrically arranged on each side of an auxiliary electrode, and share the auxiliary electrode. | 07-03-2014 |
20140183501 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD FOR MANUFACTURING THE SAME - Provided are an organic light emitting display device and a method for manufacturing the same. The organic light emitting display device comprises at least a first pixel area and a second pixel area. A partition is disposed between the first pixel area and the second pixel area. An auxiliary electrode is disposed between the first pixel area and the second pixel area and over the partition. Additionally, a first conductive element is disposed over the first pixel area, the second pixel area, and the auxiliary electrode and the first conductive element is electrically connected to the auxiliary electrode. | 07-03-2014 |
20140312323 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND METHOD OF FABRICATING THE SAME - An organic light emitting diode display device, comprises: a thin film transistor on a substrate; a first insulating layer on the thin film transistor; a connecting electrode connected to the thin film transistor and a first auxiliary electrode on the first insulating layer; a second insulating layer on the connecting electrode and the first auxiliary electrode; an anode connected to the connecting electrode and a second auxiliary electrode spaced apart from the anode and connected to the first auxiliary electrode on the second insulating layer; a bank layer having a first contact hole exposing the anode and a second contact hole exposing the second auxiliary electrode on the anode and the second auxiliary electrode; an organic emitting layer on the anode in the first contact hole; and a cathode electrically connected to the second auxiliary electrode on the organic emitting layer. | 10-23-2014 |
20140326969 | ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME - An organic light emitting diode (OLED) display device is provided. The OLED display device includes a first transistor configured to supply a data voltage to a first node, a second transistor connected between the first node and a second node, a third transistor configured to supply a reference voltage to the third node, a fourth transistor configured to supply an initialization voltage to the second node, a fifth transistor configured to supply the reference voltage to the second node, a driving transistor configured to include a drain receiving a high-level source voltage, a source connected to the second node, and a gate connected to the third node, a first capacitor connected between the first node and the third node, a second capacitor connected between the second node and the third node, and an OLED configured to include an anode connected to the second node. | 11-06-2014 |