Patent application number | Description | Published |
20090166630 | Array substrate of liquid crystal display and method for fabricating the same - A thin film transistor (TFT) for a liquid crystal display device includes a gate electrode, a source electrode, a drain electrode, an active region including a first semiconductor layer and a second semiconductor layer interposed within the first semiconductor layer, and an ohmic contact layer formed on the active region, wherein the source and drain electrodes are formed on the ohmic contact layer. | 07-02-2009 |
20090206338 | ARRAY SUBSTRATE, LIQUID CRYSTAL DISPLAY MODULE INCLUDING THE ARRAY SUBSTRATE AND METHOD OF FABRICATING THE ARRAY SUBSTRATE - An array substrate for a liquid crystal display device includes a gate line and a gate electrode on a substrate, the gate electrode connected to the gate line; a gate insulating layer on the gate line and the gate electrode; an active layer of intrinsic amorphous silicon on the gate insulating layer and corresponding to the gate electrode; an ohmic contact layer of impurity-doped amorphous silicon on the active layer; a data line crossing the gate line; a source electrode on the ohmic contact layer and connected to the data line; a drain electrode on the ohmic contact layer and spaced apart from the source electrode; a passivation layer on the source and drain electrodes and including a drain contact hole exposing a portion of the drain electrode; and a pixel electrode on the passivation layer and connected to the drain electrode through the drain contact hole, wherein the ohmic contact layer covers the active layer in a space between the source and drain electrodes. | 08-20-2009 |
20110063243 | PHOTO-SENSING TYPE TOUCH PANEL EMBEDDED LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME - A photo-sensing type touch panel embedded liquid crystal display device and a method for driving same are disclosed, where the device includes a liquid crystal panel includes a touch sensor provided in each of n pixels, where n is a Natural Number; a ROIC readout part which receives a readout voltage value from readout lines provided in the touch panel embedded liquid crystal panel; an ADC conversion part which converts an analog voltage value transmitted to the ROIC readout part into a digital value; a calculation part which calculates a calculated value by subtracting a corresponding value detected from the ADC conversion part when no-backlight is applied from a value detected from the ADC conversion part when a backlight is applied; and a position detection part for detecting a touch point on the photo-sensing type touch panel if the calculated value from the calculation part is beyond a predetermined value. | 03-17-2011 |
20110063537 | LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR FABRICATING THE SAME - The liquid crystal display device includes a first substrate and a second substrate, a gate line and a data line on the first substrate to define a pixel region, a pixel transistor formed at the intersection of the gate line and the data line, a pixel electrode formed in the pixel region, a first storage capacitor connected to the pixel electrode, a switching line formed on the first substrate, a read out line formed on the first substrate, a second storage capacitor formed on the first substrate, a switching transistor including a gate electrode connected to the second storage capacitor, a drain electrode connected to the read out line, and a source electrode connected to a driving voltage line, a first column spacer formed on the second substrate, and a common electrode formed on the first column spacer thereby forming a sensing capacitor. | 03-17-2011 |
20110074727 | LIQUID CRYSTAL DISPLAY DEVICE - Disclosed is a liquid crystal display device which can sense a change of static capacitance of liquid crystals caused by a touch to detect the touch and a position of the touch, the liquid crystal display device includes, a pixel transistor on each of crossed portions of gate lines and data lines and a pixel electrode at each of the pixel regions, a liquid crystal capacitor between the pixel electrode and a common electrode, a storage line formed on the first substrate, a switching line formed in parallel to the gate line, a read out line parallel to the data line, a first storage capacitor between the storage line and the pixel transistor, a second storage capacitor and a sensing capacitor in series between the switching line and the common electrode, a switching transistor having a gate electrode connected to a contact point of the second storage capacitor and the sensing capacitor, and a drain electrode connected to the read out line. | 03-31-2011 |
20110227858 | TOUCH PANEL AND METHOD FOR MANUFACTURING THE SAME - A touch panel includes a plurality of first electrode patterns being serially connected by a plurality of first connection patterns; a plurality of second electode patterns being serially connected by a plurality of second connection patterns; and a plurality of routing lines; wherein at least two of the plurality of first electrode patterns are connected to at least one of the plurality of routing lines. | 09-22-2011 |
20110316809 | LIQUID CRYSTAL DISPLAY DEVICE HAVING TOUCH SENSOR EMBEDDED THEREIN, METHOD OF DRIVING THE SAME AND METHOD OF FABRICATING THE SAME - A liquid crystal display device having a touch sensor embedded therein is disclosed. The present invention includes a liquid crystal layer between first and second substrates, a pixel on the second substrate to apply a horizontal electric field to the liquid crystal layer, a touch sensor on the second substrate, the touch sensor detecting a touch by forming a touch capacitor with a touch object for touching the first substrate, and a readout line outputting a sensing signal from the touch sensor. The touch sensor includes a sensing electrode on the second substrate to form the sensing capacitor with the touch object, first and second sensor gate lines, a first sensor thin film transistor supplying a sensing driving voltage to the sensing electrode in response to a control of the first sensor gate line, and a second sensor thin film transistor supplying electric charges of the sensing electrode as the sensing signal in response to a control of the second sensor gate line. | 12-29-2011 |
20120038585 | LIQUID CRYSTAL DISPLAY DEVICE HAVING TOUCH SENSOR EMBEDDED THEREIN, METHOD FOR DRIVING THE SAME, AND METHOD FOR FABRICATING THE SAME - Disclosed is a liquid crystal display device having touch sensors embedded therein. The liquid crystal display device includes a liquid crystal layer interposed between upper and lower substrates, pixels, each of which includes pixel and common electrodes applying a horizontal electric field to the liquid crystal layer, a pixel thin film transistor to drive the pixel electrode, and a common thin film transistor to drive the common electrode, touch sensors, each of which forms a sensing capacitor between an object and the common electrode, sensor power lines, readout lines, and sensor gate lines. Each touch sensor includes the common electrode, a first sensor thin film transistor charging the common electrode with the sensing driving voltage in response to control of the previous sensor gate line, and a second sensor thin film transistor outputting the sensing signal to the readout line in response to control of the current sensor gate line. | 02-16-2012 |
20120274603 | IN-CELL TYPE TOUCH PANEL - The present invention relates to an in-cell type touch panel includes first and second substrates opposite to each other, gate and data lines crossed each other to define a plurality of pixel regions, a pixel electrode at each of the pixel region, a pixel thin film transistor connected to the gate and data lines, and a pixel overlapped with the pixel electrode to have a common electrode, formed in a surface of the first substrate, a sensor electrode on a back side of the second substrate, and a touch sensor between the sensor electrode and the pixel, and a capacitance change between the sensor electrode and a touch object over the sensor electrode. | 11-01-2012 |
20140160061 | DISPLAY DEVICE AND TOUCH SENSING METHOD THEREOF - Discussed is a display device. The display device includes a display panel including a plurality of gate lines and a plurality of data lines, a timing controller temporally dividing one frame period and driving the display panel such that a display mode for displaying an image in the display panel and a touch mode for sensing the user touch are alternately driven, a gate driver, and a data driver. Some of the gate lines and some of the data lines overlap each of a plurality of touch electrodes that are units for sensing a user touch. The gate driver simultaneously turns on a plurality of switching elements respectively connected to the gate lines overlapping each touch electrode in the touch mode. The data driver outputting display data having the same level to the respective data lines overlapping each touch electrode when the switching elements are turned on. | 06-12-2014 |
20140240632 | ARRAY SUBSTRATE AND LIQUID CRYSTAL DISPLAY MODULE INCLUDING TFT HAVING IMPROVED MOBILITY AND METHOD OF FABRICATING THE SAME - An array substrate for a liquid crystal display device includes a gate line and a gate electrode on a substrate, the gate electrode connected to the gate line; a gate insulating layer on the gate line and the gate electrode; an active layer of intrinsic amorphous silicon on the gate insulating layer and corresponding to the gate electrode; an ohmic contact layer of impurity-doped amorphous silicon on the active layer; a data line crossing the gate line; a source electrode on the ohmic contact layer and connected to the data line; a drain electrode on the ohmic contact layer and spaced apart from the source electrode; a passivation layer on the source and drain electrodes and including a drain contact hole exposing a portion of the drain electrode; and a pixel electrode on the passivation layer and connected to the drain electrode through the drain contact hole. | 08-28-2014 |
20140248732 | LIQUID CRYSTAL DISPLAY DEVICE HAVING TOUCH SENSOR EMBEDDED THEREIN, METHOD OF DRIVING THE SAME AND METHOD OF FABRICATING THE SAME - A liquid crystal display device having a touch sensor embedded therein is disclosed. The present invention includes a liquid crystal layer between first and second substrates, a pixel on the second substrate to apply a horizontal electric field to the liquid crystal layer, a touch sensor on the second substrate, the touch sensor detecting a touch by forming a touch capacitor with a touch object for touching the first substrate, and a readout line outputting a sensing signal from the touch sensor. The touch sensor includes a sensing electrode on the second substrate to form the sensing capacitor with the touch object, first and second sensor gate lines, a first sensor thin film transistor supplying a sensing driving voltage to the sensing electrode in response to a control of the first sensor gate line, and a second sensor thin film transistor supplying electric charges of the sensing electrode as the sensing signal in response to a control of the second sensor gate line. | 09-04-2014 |
20140256074 | LIQUID CRYSTAL DISPLAY DEVICE HAVING TOUCH SENSOR EMBEDDED THEREIN, METHOD FOR DRIVING THE SAME, AND METHOD FOR FABRICATING THE SAME - Disclosed is a liquid crystal display device having touch sensors embedded therein. The liquid crystal display device includes a liquid crystal layer interposed between upper and lower substrates, pixels, each of which includes pixel and common electrodes applying a horizontal electric field to the liquid crystal layer, a pixel thin film transistor to drive the pixel electrode, and a common thin film transistor to drive the common electrode, touch sensors, each of which forms a sensing capacitor between an object and the common electrode, sensor power lines, readout lines, and sensor gate lines. Each touch sensor includes the common electrode, a first sensor thin film transistor charging the common electrode with the sensing driving voltage in response to control of the previous sensor gate line, and a second sensor thin film transistor outputting the sensing signal to the readout line in response to control of the current sensor gate line. | 09-11-2014 |
20140376682 | SHIFT REGISTER - Disclosed is a shift register capable of stably generating an output even when the threadhold voltage of a pull-down switching element is raised due to degradation of the pull-down switching element. The shift register includes a plurality of stages each comprising a node controller comprising an inverter to control a voltage at a reset node in accordance with a voltage at a set node, and an output unit to output a scan pulse based on at least one of the voltage at the set node and the voltage at the reset node. The shift register further includes an inverter voltage controller for controlling a high-level inverter voltage supplied to each inverter of the stages based on the voltage at at least one reset node in at least one of the stages. | 12-25-2014 |
20150062062 | Touch Integrated Circuit And Display Device Integrated With Touch Screen Using The Same - Disclosed is a display device integrated with a touch screen. The display device includes a panel configured to include a plurality of first electrodes arranged in parallel in a first direction and a plurality of second electrodes arranged in parallel in a second direction, a switching unit configured to apply a common voltage to the plurality of first and second electrodes when the panel operates in a display driving mode, and when the panel operates in a touch driving mode, apply a first touch scan pulse to the plurality of first electrodes during a first period, and apply a second touch scan pulse to the plurality of first and second electrodes during a second period, a first touch sensing unit configured to apply the first touch scan pulse to the switching unit, and a second touch sensing unit configured to apply the second touch scan pulse to the switching unit. | 03-05-2015 |
20150077370 | DISPLAY DEVICE INTEGRATED WITH TOUCH SCREEN AND DRIVING METHOD THEREOF - Discussed is a display device integrated with touch screen. The display device includes a plurality of touch groups into which a plurality of touch electrodes are physically divided, a plurality of first driving electrode lines connected to a plurality of driving electrodes of a first touch group of the touch groups, a plurality of second driving electrode lines connected to a plurality of driving electrodes of a second touch group of the touch groups, a plurality of first receiving electrode lines connected to a plurality of receiving electrodes of the first touch group, a plurality of second receiving electrode lines connected to a plurality of receiving electrodes of the second touch group, a touch driving IC configured to supply a touch driving signal to the first and second driving electrode lines, and a touch sensing IC configured to sense touch signals of the first and second receiving electrode lines. | 03-19-2015 |