Gamma correction method of active Micro-LED display screen

Abstract

A Gamma correction method of an active Micro-LED display screen is characterized in that under the control of a sequential control circuit, a group of DDR3 storages are used to realize frame rate conversion of external video signals, so that the video signals are synchronized with display driving frame frequency of bit-by-bit scanning of sub-field weights; the synchronized video is transformed through a lookup table to realize Gamma correction; by changing a Gamma value, programming a data lookup table and changing an electro-optical transfer function in real time, the Micro-LED display screenhas higher adaptability to viewing environment requirements; an FRC + DP algorithm is applied to the video data subjected to Gamma transformation, an induction gray scale is generated, gray scale expansion is realized, and the gray scale lost due to Gamma correction is reduced; data after gray scale expansion is sent to the display drive circuit through storage and reading of bit plane video data, and an image display function is realized. According to the method, the gray scale lost due to Gamma correction is made up, the display image quality is improved, and the original scene can be trulyreproduced.

Description

technical field [0001] The present invention relates to a display drive technology, in particular to a digital drive control method for an active Micro-LED display, in particular to a Gamma correction method for an active Micro-LED display. Background technique [0002] Micro-LED display is an emerging display technology in recent years, and is considered by the industry to be the ultimate display technology of the next generation after LCD and OLED. [0003] Micro-LED digital drive control technology uses the PWM technology of "sub-field weight bit-by-bit scanning" to realize the mapping from video data to display luminescence. It is a "linear optical device", and its electro-optical transfer function (Electro Optical Conversion Function, EOCF) is Linear, that is, there is a linear relationship between video data and image display brightness. This feature differs from traditional CRT monitors as well as modern displays such as LCD and OLED. [0004] The transfer function ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the existing Micro-LED display drive control system is difficult to meet the gray scale requirements, and to invent a standard transfer function that can make the Micro-LED display screen adapt to various image exchanges, so as to correct The non-linear relationship between the input video data and the display brightness realizes the Gamma correction method of the active Micro-LED display with a high degree of reproduction, which generates the induced gray scale through signal processing for Gamma correction

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