Display device, control method and circuit thereof

Abstract

The invention discloses a display device, a control method and a circuit for eliminating residual images after shutdown. The display device control method is used to eliminate the afterimage of the display device after shutdown, including: by detecting the voltage signal output by the power module, when performing a shutdown action, controlling the output of the power module by setting a switch circuit The voltage signal is provided to the gate driver through the current limiting block. The display device and its control circuit provided by the present invention can achieve the purpose of reducing the shutdown surge current by adopting a simple circuit structure in which a switch control module and a current limiting module are connected in parallel, and the product cost is low and the application is relatively flexible.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display device for eliminating residual image after shutdown, a control method and a circuit thereof. Background technique [0002] figure 1 It is an equivalent circuit of a thin film transistor liquid crystal display in the prior art. like figure 1 As shown, a (m)x(n) matrix thin film transistor liquid crystal display includes: source wiring 100, the source signal of the thin film transistor 102; With the off voltage, the drain of the thin film transistor 102 is connected to the liquid crystal pixel 103 . [0003] When the panel displays a white picture, the charge of the liquid crystal pixel 103 is charged to the maximum. At this time, the gate wiring 101 is connected to the gate closing voltage (VGL), so that the thin film transistor is in an off state, and the internal charge of the liquid crystal pixel 103 has almost no leakage current. Ioff, so that the panel can dis...

AI Technical Summary

Problems solved by technology

However, when the panel size is larger and the resolution is higher, the VGH voltage will cause a large IGH current (Surge current) when the tidal circuit is activated during shutdown. This large IGH current needs to flow through the contact terminal and the glass wiring. , IGH high current may cause reliability problems of all contact terminals on the path

[0005] At present, most of the solutions to the shutdown surge current problem are solved by changing the internal structure of the Driver IC, or adding lines on the glass substrate, and modifying the WOA wiring. The development and verification costs are relatively high.

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