Color cast compensation method and system for liquid crystal display panel

A color cast compensation method for liquid crystal display panel, wherein the color cast compensation method comprises:

• obtaining a trace impedance of each trace of a plurality of traces in a fan-out-shape and obtaining a correlation curve showing the relationship between the trace impedance and a channel according to the trace impedance;
• obtaining an output voltage of each trace correlated to the channel according to the correlation curve showing the relationship between the trace impedance and the channel, and presetting a preset driving force of the channel;
• determining whether the preset driving force of the channel makes the output voltage of each trace correlated to the channel reach a predetermined pixel charging voltage;
• if yes, the real driving force is set to be the same as the preset driving force;
• otherwise, the preset driving force of the channel where the preset driving force does not make the output voltage of the trace correlated to the channel reach the predetermined pixel charging voltage is adjusted, such that the adjusted preset driving force of the channel makes output voltage of the trace correlated to the channel reach the predetermined pixel charging voltage, and the real driving force is set to be the same as the adjusted preset driving force;
• obtaining a curve of the real driving force on an output terminal of the channel according to the real driving force set as above;
• and
• adjusting a size of a cross-sectional area of a MOS transistor on the output terminal of the channel according to the curve of the real driving force.

A color cast compensation system for liquid crystal display panel, wherein the color cast compensation method comprises a first obtaining unit, a second obtaining unit and an adjusting unit, wherein:

• the first obtaining unit is used for obtaining a trace impedance of each trace of a plurality of traces in a fan-out-shape and obtaining a correlation curve showing the relationship between the trace impedance and a channel according to the trace impedance;
• the second obtaining unit is used for obtaining a curve of a real driving force on an output terminal of the channel according to the correlation curve showing the relationship between the trace impedance and the channel;
• and
• the adjusting unit is used for adjusting a size of a cross-sectional area of a MOS transistor on the output terminal of the channel according to the curve of the real driving force.