Method and device for eliminating power-off afterimage on panel

Abstract

The present application discloses a method for eliminating power-off residual image on the panel. The method for eliminating power-off residual image on the panel includes the following steps: when the display panel is powered off, obtain the current voltage of the storage electrode; obtain the setting of the storage electrode voltage; and updating the set voltage of the storage electrode according to the current voltage of the storage electrode. The application also discloses a method and a device for eliminating afterimages after shutdown on the panel. Set the storage electrode in the control system to a set voltage that can be adjusted. When the display panel is turned off, the set voltage of the storage electrode is updated to reduce the impact of the storage electrode on the data line. The charge in the pixel structure is effectively released, and the display The panel screen becomes black, solving the afterimage problem.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a method and a device for eliminating afterimages after shutdown on a panel. Background technique [0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art. [0003] In order to reduce the color shift of the liquid crystal display and increase the viewing angle range, the liquid crystal display is usually designed with a low color shift. The general approach is to increase the area of ​​pixels, and a pixel can generally be divided into 4 areas. However, if a pixel is divided into a main pixel area and a sub-pixel area, it can be increased to 8 areas, thereby improving the color shift and improving the viewing angle. Specifically, multiple different thin film transistors (Thin Film Transistor, TFT) are used to supply power to the pixel area (3T pixel design), that is, three TFTs ...

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Problems solved by technology

[0004] For the above-mentioned liquid crystal display with low color shift design, the level control signal (Xon) function on the driving integrated circuit is used to turn on the thin film transistors of all pixel electrodes, so that the pixel area can be quickly discharged to solve the problem of after-image after shutdown When the gate is fully open, the charge sharing TFT (charge sharing TFT) is always on, the storage electrode (Array Com, A Com for short) is connected to the data line (data line), and the electric energy stored in the array flows to the data line, resulting in a voltage of the data line. The bit is raised or lowered, therefore, the clamping pressure between the voltage level of the data line and the voltage of the reference electrode (CF Com, referred to as CCom) is relatively large, so that the charge in the pixel area cannot be completely released, and the afterimage after power-off cannot be eliminated.

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