LED display screen contrast improving method and LED display screen

Abstract

The invention relates to the technical field of LED display, and particularly discloses an LED display screen contrast improving method and an LED display screen. The method comprises the following steps: dividing the LED display screen into a plurality of unit blocks with m * m lamp points according to a preset lamp point dividing strategy; obtaining a gray input value of one frame of image; according to a preset gray scale expansion strategy and a preset gray scale expansion multiple N in the strategy, defining the lamp point as P, wherein the lamp point P comprises an integer part Pi and a decimal part Pj; and selecting and displaying lamp points in the unit blocks, and the like. According to the method for improving the contrast ratio of the LED display screen and the LED display screen, the effect that only part of lamp points of each frame of image are lightened is achieved, so that the contrast ratio of picture display is improved, color bar transition of a displayed picture is more uniform and fine, the situation of low-gray-scale gray jumping is repaired. The problems that the color bar of the LED display screen is excessively poor, the LED display screen shakes and jumps gray are effectively solved, and the picture display effect of the LED display screen is improved.

Description

technical field [0001] The invention relates to the technical field of LED display, in particular to a method for improving the contrast of an LED display screen and an LED display screen. Background technique [0002] LED display has the characteristics of low energy consumption, high brightness, long life, and good performance stability. It is widely used in indoor places such as command centers, video conference rooms, studios, shopping malls, and outdoor large-screen displays. With the development of technology, Its requirements for display effects, such as contrast, brightness, and resolution, are also getting higher and higher. [0003] Due to the influence of the characteristics of the light-emitting chip, the current LED display screen has a high graying brightness, usually at 0.2cd / m2, which cannot meet customer needs. In addition, due to the insufficient grayscale accuracy of the current LED display screen, it is difficult to repair the low-grayscale grayscale of ...

AI Technical Summary

Problems solved by technology

[0003] Due to the influence of the characteristics of the light-emitting chip, the current LED display screen has a high graying brightness, usually at 0.2cd / m2, which cannot meet customer needs.

In addition, due to the insufficient grayscale accuracy of the current LED display screen, it is difficult to repair the low-grayscale grayscale of the LED display screen. After the accuracy, the LED display will have excessively poor color bars, jitter, gray jumping and other phenomena, resulting in poor display effect of the LED display

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