Method and device for improving afterimage and display device

Abstract

The invention discloses a method and device for improving an afterimage and a display device. The method for improving the afterimage comprises the steps: detecting, by a time sequence control TCON module, whether a picture to be displayed is an afterimage mode picture or not; if yes, counting the display duration of the afterimage mode picture; if the display duration of the afterimage mode picture exceeds a first preset duration and a target picture to be switched is a non-afterimage mode picture, modifying a positive frame voltage and / or a negative frame voltage corresponding to at least one gray scale of the target picture so that the gray scales displayed by the modified positive frame and the modified negative frame are different; taking the target picture after the gray-scale voltage modification as a temporary picture; switching the output picture into a temporary picture and continuously displaying for a second preset duration; and switching the output picture to the target picture for display. According to the technical scheme, the afterimage can be quickly improved, and adverse effects on other display performance indexes of the picture cannot be caused.

Description

technical field [0001] This article relates to but not limited to the field of display technology, and in particular relates to a method, device and display device for improving afterimages. Background technique [0002] Large-size LCD panels usually have afterimage problems due to large loads and limited driving capabilities. A common method for solving the afterimage problem in the circuit is to reduce the level of the afterimage defect by adjusting the reference voltage of the gamma (Gamma) voltage. [0003] A plurality of pixel units are arranged on an array substrate of a liquid crystal display, and the brightness displayed by each pixel unit is determined by a gray scale voltage (gamma voltage). figure 1 A schematic diagram of a grayscale voltage generation circuit in a liquid crystal display is shown. The PMIC (power management chip) is used to generate multiple analog reference voltages (reference voltages of gamma voltages), that is, the binding point voltage of t...

AI Technical Summary

Problems solved by technology

[0005] However, adjusting the reference voltage of the gamma voltage to improve the afterimage will affect the horizontal crosstalk of the picture, that is, the reference voltage of the gamma voltage when the afterimage is adjusted to the lowest bad level may aggravate the horizontal crosstalk

In addition, adjusting any binding point voltage may affect multiple gray scale voltages, which will greatly affect the display effect of the screen.

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