Abstract: An output buffer circuit includes an amplifier and a transmission circuit. The amplifier includes a plurality of inputs and an output. The inputs provide first input signals and second input signals to the amplifier. The output provides an output signal as a first input signal of the first input signals to the amplifier. The transmission circuit has an input coupled to the output of the amplifier and further has an output that provides a transmission circuit output signal as a second input signal of the second input signals to the amplifier.

Abstract: An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode.

Abstract: This invention relates to a liquid crystal display device and its driving method for improving a visual picture quality. A liquid crystal display device according to an embodiment includes a liquid crystal display panel where plural pixels composed of sub-pixels arranged in a fixed pattern are arranged by the unit of one horizontal line; a timing controller for controlling the gray level realization of digital data inputted from a system; and a data drive circuit that differently realigns a data pattern of the digital data by the unit of one horizontal line for each k horizontal period, that converts the digital data of the realigned data pattern into analog data voltages, and that makes the analog data voltages, which are buffered in accord with the realigned data pattern, in accord with an arrangement pattern of the sub-pixels constituting each pixel to supply the analog data voltages to each pixel.

Abstract: This invention relates to a liquid crystal display device and its driving method for improving a visual picture quality. A liquid crystal display device according to an embodiment includes a liquid crystal display panel where plural pixels composed of sub-pixels arranged in a fixed pattern are arranged by the unit of one horizontal line; a timing controller for controlling the gray level realization of digital data inputted from a system; and a data drive circuit that differently realigns a data pattern of the digital data by the unit of one horizontal line for each k horizontal period, that converts the digital data of the realigned data pattern into analog data voltages, and that makes the analog data voltages, which are buffered in accord with the realigned data pattern, in accord with an arrangement pattern of the sub-pixels constituting each pixel to supply the analog data voltages to each pixel.

Abstract: An LCD device with an improved contrast ratio and a reduced electric power consumption and a driving method thereof are disclosed. The LCD device and the driving method thereof generate a data modulation control signal using single frame image data to be displayed on a liquid crystal panel, and then generating a plurality of modulated local dimming control signals for a plurality of divisional regions of the divided single frame image data. A modulated data, in which the single frame image data is compensated with the data modulation control signal is generated and applied to the liquid crystal panel. A plurality of driver signals each corresponding to the modulated local dimming control signals are applied to the blocks of a backlight unit. The divisional regions are opposite to the blocks, respectively.

Abstract: An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode.

Abstract: An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode.

Abstract: A data driving circuit of a liquid crystal display for selectively switching and multiplexing voltages in accordance with a bit order of input data is disclosed. The data driver circuit includes: a voltage distributor that selects one of a first voltage and a second voltages as first output voltage in accordance with the most significant bit of input data including a plurality of n data bits, that multiplexes the first voltage and the second voltage to be output as one of more multiplexed output voltage is one of the first voltage and the second voltage selected in accordance with bits of the input data lower in significance than the most significant bit, and that outputs the first voltage as a final output voltage; and an output buffer that is driven by the first output voltage, the one or more multiplexed output voltages, and the final output voltage.

Abstract: An LCD with reduced power consumption is described. The LCD includes a liquid crystal panel having a plurality of gate lines and data lines, a data driver supplying a data voltage to the plurality of data lines, a controller generating a current control signal to control an output terminal of the data driver so that the output terminal operates during a first period in which data is outputted from the data driver, and the output terminal does not operate during a second period in which data is not outputted from the data driver, and a gate driver that supplies a scan signal to the plurality of the gate lines.

Abstract: An LCD device with an improved contrast ratio and a reduced electric power consumption and a driving method thereof are disclosed. The LCD device and the driving method thereof generate a data modulation control signal using single frame image data to be displayed on a liquid crystal panel, and then generating a plurality of modulated local dimming control signals for a plurality of divisional regions of the divided single frame image data. A modulated data, in which the single frame image data is compensated with the data modulation control signal is generated and applied to the liquid crystal panel. A plurality of driver signals each corresponding to the modulated local dimming control signals are applied to the blocks of a backlight unit. The divisional regions are opposite to the blocks, respectively.

Abstract: A circuit for driving a liquid crystal display device, as embodied, includes: a gray level voltage generator for generating a plurality of gray level voltages; and an intermediate gray level voltage generator for receiving a first gray level voltage and a second gray level voltage among the plurality of gray level voltages and for selectively outputting one of the first gray level voltage and a third gray level voltage through a plurality of capacitors, a value of the third gray level voltage being between the first and second gray level voltage and set by the plurality of capacitors, the intermediate gray level voltage generator including: an operational amplifier for pre-charging the plurality of capacitors using a current outputted from the operational amplifier and for selectively outputting one of the first gray level voltage and the third gray level voltage.

Abstract: An electro-luminescence display having a plurality of pixels is disclosed. One of the pixels of the electro-luminescence display includes an electro-luminescence diode electrically connected between first and second voltage sources; first and second thin film transistors adjusting an amount of current flowing to the electro-luminescence diode; and a control circuit complementarily operating the first and second thin film transistors in an active mode and a refresh mode.

Abstract: An LCD with reduced power consumption is described. The LCD includes a liquid crystal panel having a plurality of gate lines and data lines, a data driver supplying a data voltage to the plurality of data lines, a controller generating a current control signal to control an output terminal of the data driver so that the output terminal operates during a first period in which data is outputted from the data driver, and the output terminal does not operate during a second period in which data is not outputted from the data driver, and a gate driver that supplies a scan signal to the plurality of the gate lines.

Abstract: This invention relates to a liquid crystal display device and its driving method for improving a visual picture quality. A liquid crystal display device according to an embodiment includes a liquid crystal display panel where plural pixels composed of sub-pixels arranged in a fixed pattern are arranged by the unit of one horizontal line; a timing controller for controlling the gray level realization of digital data inputted from a system; and a data drive circuit that differently realigns a data pattern of the digital data by the unit of one horizontal line for each k horizontal period, that converts the digital data of the realigned data pattern into analog data voltages, and that makes the analog data voltages, which are buffered in accord with the realigned data pattern, in accord with an arrangement pattern of the sub-pixels constituting each pixel to supply the analog data voltages to each pixel.

Abstract: Provided are an apparatus and a method for providing information of set data to a user (pre-registered user) who can share the set data. The apparatus includes a communicator instructed by a controller to transmit information of the set data to a receiving portable terminal; and if a set data input event occurs, the controller outputting a set data input screen to receive the set data, generating a set data message including the set data, and transmitting the set data message to the receiving portable terminal.

Abstract: A data driving circuit of a liquid crystal display for selectively switching and multiplexing voltages in accordance with a bit order of input data is disclosed. The data driver circuit includes: a voltage distributor that selects between outputting a first voltage and a second voltage as first output voltage in accordance with the most significant bit of input data including a plurality of n data bits, that multiplexes the first voltage and the second voltage to be output as one or more multiplexed output voltages wherein each of the one or more multiplexed output voltage is one of the first voltage and the second voltage selected in accordance with bits of the input data lower in significance than the most significant bit, and that outputs the first voltage as a final output voltage; and an output buffer that is driven by the first output voltage, the multiplexed output voltage, and the final output voltage.