Compensation circuit for liquid crystal display panel

Abstract

The invention provides a compensation circuit for a liquid crystal display panel. The liquid crystal display panel consists of a plurality of scanning lines, a plurality of data lines, a gate driving circuit arranged inside the liquid crystal display panel, a source driver, a circuit board connected to the source driver, a sensing scanning line parallel to the scanning lines, and a compensation data line parallel to the data lines. A compensation circuit connected with the sensing scanning line and the compensation data line is arranged inside the circuit board. Therefore, a risk of a misoperation of the scanning line due to the influence of the coupling voltage can be eliminated and a rewriting problem can be solved. A phenomenon that a colour cast of a display picture is caused by the influence on the pixel voltage due to the voltage change of the scanning line because of the influence of the coupling capacitor can be avoided.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display panels, and in particular relates to a compensation circuit of a liquid crystal display panel. technical background [0002] The gate driver, Gate Driver Monolithic (GDM), also known as the gate driver is designed inside the glass substrate, that is, GOA, or Gate On Array, which is a design in TFT-LCD. The basic concept is to integrate the LCD The gate driver is integrated on the glass substrate to form a scanning drive for the liquid crystal display panel. Compared with traditional COF and COG processes, GDM technology not only saves costs, but also saves the process of bonding in the gate direction, which is extremely beneficial to increase production capacity and improves the integration of liquid crystal display panels. GDM technology can use the original manufacturing process of the liquid crystal display panel to manufacture the driving circuit of the horizontal scanning line...

AI Technical Summary

Problems solved by technology

[0004] Since there is a coupling capacitance Cx between the scanning line 10 and the data line 20, it will affect the voltage of the scanning line 10, thereby causing the following two problems. One is that the scanning line may have a risk of malfunction due to the influence of the coupling voltage, resulting The rewriting problem of data data; the second is due to the influence of Cgd capacitance, the change of scanning line voltage will affect the pixel voltage, which will cause the color shift of the display screen

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