Liquid crystal display with multi-frame inverting function and an apparatus and a method for driving the same

A liquid crystal display (LCD) having a multi-frame inversion function, comprising:

• a timing controller having a multiframe inversion driving portion for separating REV signals that designate a polarity of a data voltage supplied to an LCD panel, individually by every odd/even column, and generating a modulated odd REV signal and a modulated even REV signal designating the polarities of odd data voltage and even data voltage, respectively;
• a gate driver for generating a gate driving voltage;
• a data driver for generating a data driving voltage based on the modulated odd REV signal and the modulated even REV signal received from the timing controller;
• and
• an LCD panel having a plurality of gate lines, a plurality of data lines, a plurality of switching elements each formed in an area surrounded by the gate lines and the data lines and connected to the gate lines and the data lines, and a plurality of dot electrodes connected to the switching elements and operating in response to the switching elements,
• wherein inversion drive repeats in a period of p frames based on the gate driving voltage and the data driving voltage, and the inversion is performed by shifting down by every line in a period of q frames as the frame changes, wherein q is less than p, and
• the REV siqnals have sequential 1/p phase differences.

An apparatus for driving a liquid crystal display (LCD) having a multi-frame inversion function, which includes a plurality of pixels arranged in a matrix form having a plurality of gate lines, a plurality of data lines insulated from the gate lines and intersecting the gate lines, and a plurality of switching elements each formed in an area surrounded by the gate lines and the data lines and connected to the gate lines and the data lines, the apparatus comprising:

• a timing controller having a multiframe inversion driving portion for modulating an REV signal that designates a polarity of a data voltage for switching the polarity of liquid crystals on an LCD panel of the LCD with respect to a common electrode voltage, thereby generating a modulated REV signal;
• a gate driver for generating a gate driving voltage;
• and
• a data driver for generating a data driving voltage based on the modulated REV signal received from the timing controller,
• wherein the multiframe inversion driving portion comprises:
• a counter for generating a switching signal based on a vertical sync signal indicating the period of a screen;
• an REV generator for generating first through pth REV signals based on the vertical sync signal and a gate clock signal;
• and
• a multiplexer for multiplexing the first throuah pth REV signals based on the switching signal to output a modulated REV signal to the data driver,
• wherein the first through pth REV signals have seguential 1/p phase differences.

An apparatus for driving a liquid crystal display (LCD) having a multiframe inversion function, which includes a plurality of pixels arranged in a matrix form having a plurality of gate lines, a plurality of data lines insulated from the gate lines and intersecting the gate lines, and a plurality of switching elements each formed in an area surrounded by the gate lines and the data lines and connected to the gate lines and the data lines, the apparatus comprising:

• a timing controller having a multiframe inversion driving portion for modulating a REV signal that designates a polarity of a data voltage supplied to an LCD panel of the LCD, individually every odd/even column, and generating a modulated odd REV signal and a modulated even REV signal designating the polarities of odd data voltage and even data voltage, respectively;
• a gate driver for generating a gate driving voltage;
• and
• a data driver for generating a data driving voltage based on the modulated odd REV signal and the modulated even REV signal received from the timing controller,
• wherein the multiframe inversion driving portion comprises:
• a counter for generating a switching signal based on a vertical sync signal indicating the period of a screen;
• an REV generator for generating first throuah pth REV signals based on the vertical sync signal and a gate clock signal;
• a first multiplexer for multiplexing the first through pth REV signals based on the switching signal to output a modulated odd REV signal to the data driver;
• and
• a second multiplexer for multiplexing the first through pth REV signals based on the switching signal to output a modulated even REV signal to the data driver,
• wherein the first through pth REV signals have seguential 1/p phase differences.

A method for driving a liquid crystal disDlav (LCD) having a multiframe inversion function, which includes a plurality of pixels arranged in a matrix form having a plurality of gate lines, a plurality of data lines insulated from gate lines and intersecting the gate lines, and a plurality of switching elements each formed in an area surrounded by the gate lines and the data lines and connected to the gate lines and the data lines, the method comprising the steps of:

• (a) sequentially providing a scanning signal to the gate lines;
• (b) modulating an REV signal that designates a polarity of a data voltage for switching the polarity of liquid crystals on an LCD panel of the LCD with respect to a common electrode voltage, thereby generating a modulated REV signal;
• (c) generating a data driving voltage based on the modulated REV signal;
• and
• (d) supplying the data driving voltage to the data lines,
• wherein a plurality of REV signals have sequential 1/p phase differences.

A method for driving a liquid crystal displav (LCD) having a multiframe inversion function, which includes a plurality of pixels arranged in a matrix form having a plurality of gate lines, a plurality of data lines insulated from and intersecting the gate lines, and a plurality of switching elements each formed in an area surrounded by the gate line and the data line and connected to the gate line and the data line, the method comprising the steps of:

• (a) sequentially supplying a scanning signal to the gate lines;
• (b) modulating an REV signal that designates a polarity of a data voltage supplied to an LCD panel of the LCD, individually every odd/even column, thereby generating a modulated odd REV signal and a modulated even REV signal designating the polarities of odd data voltage and even data voltage, respectively;
• (c) generating a data driving voltage based on the modulated REV signal;
• and
• (d) supplying the data driving voltage to the data lines,
• wherein a plurality of REV signals have sequential 1/p phase differences.