Display driving circuit and display driving method for liquid crystal display

Abstract

A display driving method for a liquid crystal display comprises providing a first clock signal and a second clock signal, wherein phases of the first clock signal and the second clock signal are opposite and the pulse width is half of a clock period; providing a first data signal to an odd number line matrix unit and a second data signal to an even number line unit according to image data, wherein the second data signal delays a half clock period relative to the first data signal; providing a scanning signal to a matrix unit of any odd number line matrix according to the first clock signal to enable the matrix unit to be started to be charged by the first data, wherein the pulse width of the scanning signal is two thirds of the clock period; providing a scanning signal for a next even number line matrix unit which is adjacent to the odd number line according to the second clock signal to enable the matric unit to be started and be charged by the second clock signal.

Description

【Technical field】 [0001] The invention relates to a liquid crystal display technology, in particular to a display driving circuit and a display driving method that can improve the charging capacity of a high-resolution liquid crystal display. 【Background technique】 [0002] With the continuous promotion and popularization of flat-panel displays, high requirements are placed on the display performance of flat-panel displays. Whether it is an active matrix organic light-emitting diode display or a thin-film transistor liquid crystal display, higher resolution and refresh rate ( scanning frequency). For now, displays with 4K (generally referring to horizontal resolution of about 4000 pixels) resolution and 120Hz scanning frequency have gradually entered the mainstream consumer market. [0003] However, as the requirements for resolution and scanning frequency increase, thin-film transistors will not have enough time to charge pixels due to high scanning frequency, which will s...

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Problems solved by technology

[0003] However, as the requirements for resolution and scanning frequency increase, thin-film transistors will not have enough time to charge pixels due to high scanning frequency, which will seriously affect the charging rate of pixels; at the same time, the increase of scanning frequency will also increase the pixel The switching frequency of the voltage polarity, the more frequently the driving voltage polarity of the pixel is switched, the greater the power consumption of the data driving circuit connected to the data line

Since the traditional thin film transistor liquid crystal display is limited by the electron mobility of amorphous silicon semiconductor and the characteristics of aluminum metal resistance, it cannot improve the charging efficiency, so some manufacturers are looking for new high mobility semiconductor materials and low resistance metal materials. , such as using low temperature polysilicon (LTPS) as the semiconductor material for thin film transistors

However, because the application technology of new materials is not yet mature enough, it cannot be widely used in flat panel displays.

[0004] Therefore, when the current application technology of new materials has not yet been perfected, it is still necessary to improve the existing LCD display driving method or circuit to solve the problems existing in the existing technology.

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