Driving method for compensating Data signal to improve panel ghosting

Abstract

The invention discloses a driving method for compensating Data signals to improve panel ghosting, which comprises the following steps of: S1, selecting a group of Data wires, adding a detection circuit from the in-plane Data wires controlled by each Demux in the group, and connecting the detection circuit to a detection circuit in an IC (Integrated Circuit); s2, the detection circuit judges whether the Data signal input into the plane by the IC of each gray scale from 0 to 255 is the same as the Data signal output by the IC; if the signals are consistent, the data signals are not changed, if the signals have differences, the control circuit changes the Data signals according to the differences, the signals which are abnormally pulled up after being coupled by the Demux signals originally are pulled down reversely, then the changed Data correction signals are transmitted to the output circuit, and the output circuit outputs the Data correction signals; and S3, after the Data correction signal passes through the Demux signal couple, the voltage of the lowered part is increased by the couple, and the Data signal input into the plane is recovered to be normal. According to the invention, by changing the Data signal, the coupled of the Data signal by the Demux signal can be effectively reduced, and the panel ghosting is improved.

Description

technical field [0001] The invention belongs to the technical field of LCD panel image afterimage improvement, and in particular relates to a driving method for compensating for a Data signal to improve panel image afterimage. Background technique [0002] In order to reduce the IC output data traces and shorten the border under the panel, the demultiplexer technology (Demultiplexer, abbreviated as Demux) came into being. The so-called Demux technology is to decompose the Data trace output from the IC into multiple Data traces, and each Data trace is controlled by a Demux TFT. Due to the existence of parasitic capacitance C between the Demux signal and the Data signal (such as figure 1 shown), so when the Demux signal drops from a high level to a low level instantaneously, it will cause the Data signal to jump, causing the AC drive asymmetry in the plane to form an in-plane DC bias (such as figure 2 shown). Due to the effect of DC bias, when the next different screen is ...

AI Technical Summary

Problems solved by technology

Image sticking causes a ghost image to appear on the new frame, resulting in a loss of contrast and a blurry image

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