Abstract:
A liquid crystal display device includes a comparator which judges a voltage of data; and a pre-charge controller which pre-charges a data line of a liquid crystal display panel with a pre-charge voltage if the voltage of the data is a first voltage, and pre-charges the data line with a charge share voltage, which has a lower absolute value than the pre-charge voltage, if the voltage of the data is a second voltage that is lower than the first voltage.
Abstract:
Provided is a display device capable of improving image quality. The display device includes a display panel, a gate driver, a data driver and a gamma reference voltage generator. In the display panel, gate lines and data lines cross each other to define a plurality of liquid crystal cells. The gate driver supplies a scan signal to the gate lines sequentially. The data diver supplies a data voltage to the data lines. The gamma reference voltage generator selectively supplies a gamma reference voltage or a reference voltage of black gradation to the data driver in each horizontal period, according to a selection control signal input from the timing controller.
Abstract:
A liquid crystal display device for eliminating a vertical dimming phenomenon to improve a picture quality of a liquid crystal display panel is disclosed. In the device, first and second data lines are supplied with data. A first pixel electrode is spaced at a desired distance from the first data line. A second pixel electrode is spaced, by a distance different from said distance between the first data line and the first pixel electrode, from the second data line.
Abstract:
A display having a data driving integrated circuit includes N number of output channels (where N is an integer) having at least two regions including a first output channel and an Nth output channel, a data output channel group including M data output channels (where M is an integer less than N), the M data output channels supplying pixel data to a corresponding number of the data lines in accordance with a desired resolution of the display, wherein (N-M) output channels are not supplied with pixel data, and the (N-M) output channels are located between the first output channel and the Nth output channel, and a channel selector selecting the M data output channels.
Abstract:
A liquid crystal display device and a driving method thereof, which are capable of preventing generation of a residual image upon power-off, are disclosed. The liquid crystal display device includes a power supply unit for outputting a plurality of drive voltages after delaying the drive voltages, a voltage detector for monitoring one of the drive voltages, and outputting a power-off detect signal based on the result of the monitoring, a timing controller for increasing a frequency of a control signal in response to the power-off detect signal, and outputting the frequency-increased control signal, a gate driver for outputting a scan signal in response to the frequency-increased control signal, a data driver for outputting a constant voltage in response to another control signal from the timing controller, and a liquid crystal panel for applying the constant voltage to all sub-pixels of the liquid crystal panel in response to the scan signal.
Abstract:
A data transmission apparatus a data transmitter selectively inverting data and transmitting the selectively inverted data. A data receiver selectively re-inverts the selectively inverted data from the data transmitter and reconstructs the inverted data into the original data. The inversion operation of the data transmitter and the data receiver is controlled by a mode controller. The mode controller receives data having a number of bits along with a clock signal to detect a number of transitions every period of the clock signal, and controls driving modes of the data transmitter and the data receiver in accordance with the detected number of transitions.
Abstract:
An apparatus and method of driving data of a liquid crystal display device is disclosed, which can minimize an electromagnetic interference EMI noise by decreasing an output peak current of a data driver, the apparatus comprising a timing controller for supplying a reference source output enable signal; a delay circuit for delaying the reference source output enable signal and supplying a plurality of source output enable signals provided with the different delay times; and a data driver, including a plurality of data ICs to divide and drive data lines of a liquid crystal panel into a plurality of data blocks, for dispersing data output timing of the plurality of data ICs in response to the plurality of source output enable signals.
Abstract:
An apparatus and method for data interface of a flat panel display device, which is capable of transferring clocks in a state, in which the clocks are embedded in digital data, thereby reducing the number of transfer lines, is disclosed. The apparatus includes a transmitter unit built in a timing controller, to transmit transfer data with an embedding clock embedded between successive pieces of data, and a clock enable signal to indicate the embedding clock, and receiver units respectively built in a plurality of data integrated circuits connected to the timing controller, to separate and detect the embedding clock and the data from the transfer data, in response to the clock enable signal.
Abstract:
A liquid crystal display device and a driving method thereof, which are capable of preventing generation of a residual image upon power-off, are disclosed. The liquid crystal display device includes a power supply unit for outputting a plurality of drive voltages after delaying the drive voltages, a voltage detector for monitoring one of the drive voltages, and outputting a power-off detect signal based on the result of the monitoring, a timing controller for increasing a frequency of a control signal in response to the power-off detect signal, and outputting the frequency-increased control signal, a gate driver for outputting a scan signal in response to the frequency-increased control signal, a data driver for outputting a constant voltage in response to another control signal from the timing controller, and a liquid crystal panel for applying the constant voltage to all sub-pixels of the liquid crystal panel in response to the scan signal.
Abstract:
A liquid crystal display (LCD) includes a liquid crystal panel a liquid crystal panel including first and second substrates, and a liquid crystal layer disposed between the first and second substrates; a gate driving block including a plurality of gate drivers disposed in an edge area of the first substrate; a data driving block including a plurality of data drivers each connected to the first substrate and to a source printed circuit board (PCB) by a respective tape carrier package (TCP) of a plurality data TCPs; and a data pad unit disposed on each data TCP, wherein pitches of data pads disposed on each data pad unit are different in different portions of the of each data TCP, and the data pads are each to transmit a data signal from the data driving block to a data line of the liquid crystal panel.