A source driver of a liquid crystal panel

Abstract

The invention provides a source driver of a liquid crystal panel. A plurality of source drivers are arranged, each source driver outputs a plurality of channels which are connected to a liquid crystal panel, each channel corresponds to a wire, the source drivers are connected into the liquid crystal panel through the wires, all the wires are the same in width, each channel of the source driver, which corresponds to a B area, is internally connected with a time delay circuit module in series, and the time delay circuit module enables voltage data to be output to a TFT after a delay of a certain time relative to an A area and a C area when the TFT in the B area of the liquid crystal panel corresponding to the output channel of the source driver is opened, thereby achieving an effect that a common capacitor and a liquid crystal capacitor in the liquid crystal panel are consistent in charging voltage in the same time of opening of the TFT. According to the source driver of the liquid crystal panel, on the one hand, the wires of the source driver are designed to be the same in width, and on the other hand, the time delay circuit module is arranged in the position of the wire in the middle of the source driver, thereby further reducing chromatic aberrations between the areas of the liquid crystal panel.

Description

technical field [0001] The invention relates to a source driver of a liquid crystal panel. Background technique [0002] figure 1 Shown is a schematic diagram of the connection between the existing source driver and the liquid crystal panel. The output and output lines 11 of the source driver 10 are connected to the source S of the TFT switch through the chip-on-film (COF) 30 and the liquid crystal panel 100. In the gate driver With the cooperation of 20, the data data voltage is injected into the TFT. Since the connection 12 of the source driver 10 is on the chip-on-chip 30 and is located at the bottom of the liquid crystal panel 100 and arranged in sequence, such a layout makes the output wiring 111, 112 closer to the two ends of the source driver 10 than the output wiring 112 in the middle. The output trace 113 is long. According to the proportional relationship between the line length and impedance, it can be seen that the output lines 111 and 112 at both ends have a ...

AI Technical Summary

Problems solved by technology

According to the proportional relationship between the line length and impedance, it can be seen that the output lines 111 and 112 at both ends have a large attenuation of the data data voltage entering the LCD panel due to their high impedance, while the output line 113 in the middle enters the panel due to its short line length. The data data voltage attenuation is smaller, such a difference causes such as figure 1 Display color difference of areas A, C and B at both ends shown

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