Lg Display Co., Ltd.

Lg Philips Lcd Co., Inc.

Jin Cheol Hong

Sin Ho Kang

Hong Sung Song

Sung Chul Ha

Chang Hun Cho

Seung Kuk An

Jong Woo Kim

Soon Dong Cho

Man Gyu Park

Seung Cheol O

Hyun Chul Kim

Su Hyuk Jang

In Ho Ahn

Sang Rae Kim

Hyun Taek Nam

Tae Hun Kim

Pil Sung Kang

Jae Kyung Kang

Min Hwa Kim

Seung Cheol Oh

Jeong Ho Kang

Boo Han Kim

Min Gi Kim

A display device includes a display panel configured to display an image, a data driver configured to supply a data voltage to the display panel, and a timing controller configured to control the data driver, and the data driver pauses a data latch operation.

Light emitting display device and driving method of the same

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.

Display device

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.

Apparatus and method of driving data of liquid crystal display device

An LCD device and a method of driving the same are provided. The LCD device includes a panel, one or more gate driver IC, a timing controller, and a source driver IC. The gate driver IC sequentially drives a plurality of gate lines formed in the panel. The timing controller controls the gate driver IC. The source driver IC simultaneously transfers image data from a first latch to a second latch according to a latch signal, converts the image data transferred from the second latch into data voltages, and outputs the data voltages to the panel at a falling time of a source output enable signal.

Liquid crystal display and method of driving the same

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&#x2212;M) output channels are not supplied with pixel data, and the (N&#x2212;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.

Liquid crystal display device

A liquid crystal display (LCD) device and a driving method thereof for improving a working efficiency of the LCD and reducing manufacturing costs. The liquid crystal display device includes a liquid crystal display panel having liquid crystal cells at crossings of data lines and gate lines, data integrated circuit supplying pixel data via a plurality of data output channels, a gate integrated circuit driving the gate lines, a channel selector for selecting the plurality of data output channels of the data integrated circuits in accordance with a number of the data lines wherein only the selected data output channels contain the pixel data, and a timing controller for controlling the data integrated circuit and the gate integrated circuit.

The liquid crystal display device includes a liquid crystal panel including a common voltage correction unit that obtains predominant-polarity data based on polarities of image data to be supplied to pixel cells arranged in an nth one of pixel rows, obtains predominant-polarity data based on polarities of image data to be supplied to pixel cells arranged in an (n+1)th one of the pixel rows adjacent to the nth pixel row, obtains a sum of the two predominant-polarity data, and selects and outputting any one of a plurality of predetermined correction values based on the sum, and a common voltage output unit that corrects a common voltage based on the correction value from the common voltage correction unit and supplies the corrected common voltage to a common electrode.

Liquid crystal display device and method for driving the same

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.

Apparatus and method for data interface of flat panel display device

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.

A liquid crystal display device includes first and second substrates facing each other and attached to each other with a cell-gap therebetween, gate lines and data lines arranged horizontally and vertically on the first substrate, first lines formed on the first substrate, connected to the gate lines or the data lines, and each having a link bending point and bent at an angle, a TCP electrically attached to the first substrate, and second lines formed on the TCP and electrically connected to the first lines respectively. At least one link bending point is positioned at a region of the TCP.

Liquid crystal display device with link lines connecting to tape carrier package

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.

Liquid crystal display device and driving method thereof

A liquid crystal display for changing a supply sequence of a scanning pulse with which a plurality of gate lines are supplied to realize a one dot inversion, and a driving method thereof are disclosed. In the liquid crystal display, a liquid crystal display panel has a plurality of data lines and a plurality of gate lines, which are crossed each other, and pixels, which are defined by the lines. A gate driver supplies scanning pulses to the gate lines, and changes a supply sequence of the scanning pulses for each frame. A data driver converts digital video data into data voltages and periodically inverts a polarity of the data voltages to supply the data voltages in accordance with a supply sequence of the scanning pulses. And a timing controller supplies the digital video data to the data driver, and controls the data driver and the gate driver, and wherein a polarity of data voltages, which are supplied to the liquid crystal display panel, is inverted for each liquid crystal cell and a polarity of a data voltage which is outputted from the data driver, is inverted for every two to four horizontal periods.

Liquid crystal display and driving method thereof

A data transition minimization method includes exclusive-NORing inputted nth image data (where n is a natural number) and (n&#x2212;m)th image data (where m is a natural number smaller than n) expressing the same color as that of the nth image data to generate transition information data; generating inversion data indicative of inversion information by inverting all bits included in the transition information data and adding a unit bit having the logic value '1' to the inverted transition information data when the number of unit bits having a logic value '1' in the transition information data is larger than the number of unit bits having a logic value &#x2018;0&#x2019; in the transition information data, and adding a unit bit having the logic value &#x2018;0&#x2019; to the transition information data when the number of unit bits having the logic value &#x2018;1&#x2019; in the transition information data is equal to or smaller than the number of unit bits having the logic value &#x2018;0&#x2019; in the transition information data; exclusive-NORing the transition information data with the inversion data added and corrected image data of (n&#x2212;1)th image data to generate corrected image data of the nth image data, and supplying the generated corrected image data to a data driver through data transmission lines; and restoring the corrected image data supplied to the data driver to restored image data corresponding to the original nth image data.

Method for minimizing data transition and circuit for minimizing data transition

A liquid crystal display device is set forth that comprises a data line that is connected to drive a liquid crystal cell and an output driver connected to selectively provide a pixel drive signal to the data line. The pixel drive signal corresponds to a digital video data signal provided to the liquid crystal display device. A pre-charging circuit is used to reduce the power consumed by the output driver. To this end, the pre-charging circuit is connected to selectively pre-charge the data line to one or more of a plurality of voltage levels depending on the value of the digital video data signal. In one embodiment, the plurality of voltage levels comprises a positive pre-charge voltage, a negative pre-charge voltage, and a charge share voltage. The magnitudes of the positive pre-charge voltage and the negative pre-charge voltage may be chosen so that they are greater than the magnitude of the charge share voltage.

Growing community of inventors

Gumi-si, South Korea

Jin Cheol Hong