Abstract: A display device includes a display panel including a plurality of pixels which are connected to a plurality of gate lines and a plurality of data lines and display a plurality of consecutive frames of images, a data driver driving the data lines, a gate driver driving the gate lines, a clock generator outputting a gate clock signal, which drives the gate driver and swings between a gate-on voltage and a gate-off voltage, and a signal controller outputting a gate pulse signal which drives the clock generator and a data control signal which controls the data driver. The clock generator includes a voltage maintainer maintaining the gate clock signal at a reference voltage that has a fixed value between the gate-on voltage and the gate-off voltage for a predetermined time.

Abstract: A display device includes a display panel including a plurality of pixels which are connected to a plurality of gate lines and a plurality of data lines and display a plurality of consecutive frames of images, a data driver driving the data lines, a gate driver driving the gate lines, a clock generator outputting a gate clock signal, which drives the gate driver and swings between a gate-on voltage and a gate-off voltage, and a signal controller outputting a gate pulse signal which drives the clock generator and a data control signal which controls the data driver. The clock generator includes a voltage maintainer maintaining the gate clock signal at a reference voltage that has a fixed value between the gate-on voltage and the gate-off voltage for a predetermined time.

Abstract: A display device includes a display panel including a plurality of pixels which are connected to a plurality of gate lines and a plurality of data lines and display a plurality of consecutive frames of images, a data driver driving the data lines, a gate driver driving the gate lines, a clock generator outputting a gate clock signal, which drives the gate driver and swings between a gate-on voltage and a gate-off voltage, and a signal controller outputting a gate pulse signal which drives the clock generator and a data control signal which controls the data driver. The clock generator includes a voltage maintainer maintaining the gate clock signal at a reference voltage that has a fixed value between the gate-on voltage and the gate-off voltage for a predetermined time.

Abstract: A display device includes: a timing controller to provide data including a pre-emphasis value and an image data value; a gamma reference voltage supplier to selectively supply one of a first gamma reference voltage and a second gamma reference voltage different from the first gamma reference voltage; and a data driver to supply a pre-emphasis voltage, that is generated based on the pre-emphasis value and the first gamma reference voltage, to data lines during a first period of a horizontal period, and to supply a data voltage, that is generated based on the image data value and the second gamma reference voltage, to the data lines during a second period of the horizontal period. The timing controller is to control the gamma reference voltage supplier to supply the first gamma reference voltage during the first period and to supply the second gamma reference voltage during the second period.

Abstract: A display device includes a plurality of pixels, each including a first sub-pixel indicating a first color, a second sub-pixel indicating a second color, and a third sub-pixel indicating a third color, data lines coupled to pixels arranged in a first direction and configured to supply a data signal to the coupled pixels, gate lines coupled to pixels arranged in a second direction crossing the first direction and configured to supply a gate signal to the coupled pixels, and a compensation circuit configured to calculate a difference between grayscale values of a data signal to be supplied to the first to third sub-pixels, and generate a clock signal based on the difference that controls a start time at which the data signal is inputted to the pixels.

Abstract: A display device includes a display panel including a plurality of pixels which are connected to a plurality of gate lines and a plurality of data lines and display a plurality of consecutive frames of images, a data driver driving the data lines, a gate driver driving the gate lines, a clock generator outputting a gate clock signal, which drives the gate driver and swings between a gate-on voltage and a gate-off voltage, and a signal controller outputting a gate pulse signal which drives the clock generator and a data control signal which controls the data driver. The clock generator includes a voltage maintainer maintaining the gate clock signal at a reference voltage that has a fixed value between the gate-on voltage and the gate-off voltage for a predetermined time.

Abstract: A display device includes: a timing controller to provide data including a pre-emphasis value and an image data value; a gamma reference voltage supplier to selectively supply one of a first gamma reference voltage and a second gamma reference voltage different from the first gamma reference voltage; and a data driver to supply a pre-emphasis voltage, that is generated based on the pre-emphasis value and the first gamma reference voltage, to data lines during a first period of a horizontal period, and to supply a data voltage, that is generated based on the image data value and the second gamma reference voltage, to the data lines during a second period of the horizontal period. The timing controller is to control the gamma reference voltage supplier to supply the first gamma reference voltage during the first period and to supply the second gamma reference voltage during the second period.

Abstract: A display device includes a plurality of pixels, each including a first sub-pixel indicating a first color, a second sub-pixel indicating a second color, and a third sub-pixel indicating a third color, data lines coupled to pixels arranged in a first direction and configured to supply a data signal to the coupled pixels, gate lines coupled to pixels arranged in a second direction crossing the first direction and configured to supply a gate signal to the coupled pixels, and a compensation circuit configured to calculate a difference between grayscale values of a data signal to be supplied to the first to third sub-pixels, and generate a clock signal based on the difference that controls a start time at which the data signal is inputted to the pixels.

Abstract: A method of driving a display panel includes charging a pixel with first data during a first charging period, comparing a first grayscale of the first data and a second grayscale of second data, charging the pixel with compensated data during a second charging period if the first grayscale is greater than the second grayscale, and charging the pixel with the second data during a third charging period.

Abstract: A display apparatus includes a display panel, a gate driver, a counter and a power generator. The display panel includes a gate line and a pixel electrically connected to the gate line. The gate driver is configured to set a voltage level and an output timing of a gate signal applied to the gate line based on a gate driving voltage and a first control signal. The gate driving voltage includes a gate on voltage and a gate off voltage. The counter is configured to increase a count value based on the first control signal. The power generator is configured to adjust a level of the gate driving voltage based on the count value.

Abstract: A method of driving a display panel includes charging a pixel with first data during a first charging period, comparing a first grayscale of the first data and a second grayscale of second data, charging the pixel with compensated data during a second charging period if the first grayscale is greater than the second grayscale, and charging the pixel with the second data during a third charging period.

Abstract: The present invention provides a display device which can display a clear stereoscopic image by distinctly separating a left image from a right image, and a method of driving the display device. The display device includes a display panel that sequentially displays a left image and a right image, and a polarizing panel disposed on the display panel, the polarizing panel to change a polarization direction of at least one of the left image and the right image so that polarization directions of the left image and the right image are different from each other. Each left image and a right image includes a black image.

Abstract: In a display panel and a display apparatus having the display panel, the display panel includes array and opposite substrates. The array substrate includes display and peripheral areas. Gate and source lines are formed in the display area. A gate driving part and first and second clock lines are formed in the peripheral area. The gate driving part outputs gate signals to the gate line. The first and second clock lines respectively transmit first and second clock signals to the gate driving part. The opposite substrate is combined with the array substrate and includes a common electrode layer. The common electrode layer has an opening portion patterned to expose the first and second clock lines. The exposed portions of the first and second clock lines have substantially the same area. Thus, delays of the gate signals may be minimized and distortion of the gate signals may be prevented.

Abstract: In a display panel and a display apparatus having the display panel, the display panel includes array and opposite substrates. The array substrate includes display and peripheral areas. Gate and source lines are formed in the display area. A gate driving part and first and second clock lines are formed in the peripheral area. The gate driving part outputs gate signals to the gate line. The first and second clock lines respectively transmit first and second clock signals to the gate driving part. The opposite substrate is combined with the array substrate and includes a common electrode layer. The common electrode layer has an opening portion patterned to expose the first and second clock lines. The exposed portions of the first and second clock lines have substantially the same area. Thus, delays of the gate signals may be minimized and distortion of the gate signals may be prevented.

Abstract: In a display panel and a display apparatus having the display panel, the display panel includes array and opposite substrates. The array substrate includes display and peripheral areas. Gate and source lines are formed in the display area. A gate driving part and first and second clock lines are formed in the peripheral area. The gate driving part outputs gate signals to the gate line. The first and second clock lines respectively transmit first and second clock signals to the gate driving part. The opposite substrate is combined with the array substrate and includes a common electrode layer. The common electrode layer has an opening portion patterned to expose the first and second clock lines. The exposed portions of the first and second clock lines have substantially the same area. Thus, delays of the gate signals may be minimized and distortion of the gate signals may be prevented.

Abstract: A liquid crystal display includes a liquid crystal layer disposed between first and second substrates. A gate line transmits gate signals; a first data line transmits data voltages; a first voltage line alternately transmits a first voltage and a second voltage that is than greater than the first voltage; a first switching element is connected to the gate line and the first data line; a second switching element is connected to the gate line and the first voltage line; a first pixel electrode is connected to the first switching element; and a second pixel electrode is connected to the second switching element. The first pixel electrode and the second pixel electrode form a liquid crystal capacitor along with the liquid crystal layer, and at least one of the first voltage and the second voltage is variable.

Abstract: A method for reducing noise of a touch panel includes: generating a detection signal including at least one contact region; generating a combination noise region including at least a portion of the at least one contact region; and generating a final detection signal. The generating the final detection signal includes removing the combination noise region from the detection signal.

Abstract: A handover method of a portable terminal includes checking communication quality during a movement of the portable terminal in a service coverage area of a serving cell; when the communication quality is lower than preset communication level, determining one or more neighbor cells exceeding the preset communication level by considering a travel speed of the portable terminal; selecting a neighbor cell from the determined neighbor cells; and performing a handover to the service coverage area of the selected neighbor cell.

Abstract: A liquid crystal display includes a liquid crystal layer disposed between first and second substrates. A gate line transmits gate signals; a first data line transmits data voltages; a first voltage line alternately transmits a first voltage and a second voltage that is than greater than the first voltage; a first switching element is connected to the gate line and the first data line; a second switching element is connected to the gate line and the first voltage line; a first pixel electrode is connected to the first switching element; and a second pixel electrode is connected to the second switching element. The first pixel electrode and the second pixel electrode form a liquid crystal capacitor along with the liquid crystal layer, and at least one of the first voltage and the second voltage is variable.

Abstract: A method for reducing noise of a touch panel includes: generating a detection signal including at least one contact region; generating a combination noise region including at least a portion of the at least one contact region; and generating a final detection signal. The generating the final detection signal includes removing the combination noise region from the detection signal.