Lg Display Co., Ltd.

MyungKook Moon

Jongwoo Kim

Hyuntaek Nam

Suhyuk Jang

HwaYoung Kim

A display device including plural timing controllers is provided. The display device includes a display panel, first and second data drive circuits, first and second timing controllers. The display panel includes pixels and data lines. The first data drive circuit supplies data voltages to a part of the data lines. The second data drive circuit supplies data voltages to the other of the data lines. The first and second timing controllers controls the display panel according to a first inversion scheme when images displayed by first and second image data do not include predetermined problem patterns, and controls the display panel according to an inversion scheme other than the first inversion scheme when the images displayed by the first and second image data include at least one of the predetermined problem patterns.

Display device

An LCD device includes a driver and a timing controller. The driver includes at least one or more gate driving IC for outputting a scan signal to a plurality of gate lines of a panel, and at least one or more data driving IC for respectively outputting a plurality of image data signals to a plurality of data lines of the panel. The timing controller determines whether a current mode is an abnormal mode in which the panel outputs an abnormal image by using at least one or more lock signals, outputs a driver control signal generated for controlling the driver when the current mode is determined as a normal mode, and outputs a masking control signal, which makes the panel not to output the abnormal image, to the driver when the current mode is determined as the abnormal mode.

Liquid crystal display device and its driving method

A liquid crystal display includes: a liquid crystal display panel including a plurality of data lines and a plurality of gate lines crossing each other; a first source drive IC for outputting a data voltage to the data lines and inverting the polarity of the data voltage in response to a first polarity control signal; a second source drive IC for outputting the data voltage to the data lines and inverting the polarity of the data voltage in response to a second polarity control signal; and a timing controller for generating the first and second polarity control signals in the same phase when the source drive ICs output data voltages whose polarity is inverted by horizontal 1-dot inversion and generating the first and second polarity control signals in the opposite phase to each other when the source drive ICs output data voltages whose polarity is inverted by horizontal 2-dot inversion.

Liquid crystal display and method of controlling dot inversion thereof

A liquid crystal display includes a frame rate control (FRC) device which adds an FRC compensation value to digital video data using a plurality of FRC patterns defining subpixels, to which the FRC compensation value will be written, and a data driving circuit which converts the digital video data received from the FRC device into a data voltage and invert a polarity of the data voltage based on a previously determined inversion method. The FRC device counts frame periods and increases a frame count value each time the frame period changes. The FRC device changes to a next FRC pattern in previously determined order in response to the frame count value, and holds or skips the frame count value when the frame period reaches a previously determined time.

Liquid crystal display and frame rate control method thereof

A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a liquid crystal display panel on which data lines and gate lines cross each other, a data driving circuit that converts data of an input image into positive and negative analog data voltages and outputs the data voltages to the data lines, a gate driving circuit sequentially supplying a gate pulse synchronized with the data voltages to the gate lines, and a timing controller that supplies the input image data to the data driving circuit, controls an operation timing of each of the data driving circuit and the gate driving circuit, compares the input image data with a previously stored reference data pattern, and decides whether or not the input image data is the same as the reference data pattern.

Liquid crystal display and method of driving the same

An impulsive driving liquid crystal display and a driving method thereof are provided. The liquid crystal display comprises a liquid crystal display panel on which a plurality of data lines and a plurality of gate lines cross each other; a data driving circuit for supplying a video data voltage and a black voltage to the data lines; and a plurality of gate drive ICs for sequentially supplying a gate pulse, synchronized with the video data voltage during a first period, to adjacent gate lines, and then simultaneously supplying a gate pulse, synchronized with the black voltage during a second period, to the gate lines spaced at intervals of at least one line.

Liquid crystal display and driving method with black voltage charging

A liquid crystal display is provided. The liquid crystal display includes a liquid crystal display panel, a data driving circuit for converting digital video data into positive/negative data voltages to be supplied to the data lines and adjusting the horizontal polarity inversion cycle of the positive/negative data voltages, and a timing controller for generating the vertical polarity control signal and the horizontal polarity control signal, adding a FRC correction value to input digital video data to supply the input digital video data to the data driving circuit, detecting a predetermined weak pattern from the input digital video data and, when data having the weak pattern is detected, changing either the logic inversion cycle of the vertical polarity control signal or the logic of the horizontal polarity control signal and changing the position of the data to which the FRC correction value is added.

Growing community of inventors

Daegu, South Korea

MyungKook Moon