Compensation method for splicing bright and dark lines of led display

Abstract

The invention relates to a splicing bright and dark line compensation method of an LED display, comprising the steps of: (a) determining a plurality of LED pixel points at the positions of splicing bright and dark lines in an LED display constructed by a plurality of splicing units; (b) Adjust the brightness of multiple LED pixels to compensate for splicing bright and dark lines to the target effect and update the correction coefficients of multiple LED pixels from the initial value to the target value; (c) After compensating and splicing bright and dark lines to achieve the target effect, save multiple The position of each LED pixel point and the corresponding brightness adjustment amount to obtain the bright and dark line compensation file; and (d) before splitting the LED display into multiple splicing units, use the bright and dark line compensation file to calculate multiple LED pixels The brightness reverse adjustment amount of the point, and use the brightness reverse adjustment amount to restore the correction coefficients of multiple LED pixel points from the target value to the initial value. The invention can quickly solve the problem of bright and dark lines caused by splicing on site, and the original state can be restored after the screen is disassembled without affecting subsequent use.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a splicing bright and dark line compensation method for LED display screens. Background technique [0002] LED rental screens are generally composed of batches of cabinets purchased in time intervals. Differences in brightness and color gamut of different batches of cabinets lead to a decline in the overall screen image quality; at this time, LED display screens can be used to correct point-by-point brightness and chromaticity Improve brightness uniformity. [0003] At present, the point-by-point calibration technology scheme of LED display is becoming more and more perfect. The current production line calibration technology derived from the initial on-site full-screen calibration, that is, the cabinet calibration technology, can ensure the uniformity of the LED screen in the factory and reduce technical support costs. And relative to the on-site calibration, the efficiency is ...

AI Technical Summary

Problems solved by technology

A batch of cabinets that have been calibrated by the cabinets have a very good uniformity of brightness and chromaticity inside the cabinets. Limitation, there is a slight inconsistency in the distance between the cabinet and the cabinet when the screen is set up on site. After the low-pass filtering process of the human visual system, bright or dark lines will appear in the display (herein, collectively referred to as Splicing bright and dark lines), especially on small-pitch displays

[0005] It can be seen that the introduction of cabinet calibration technology into the calibration of leased cabinets can solve the problem of poor uniformity of cabinets delivered by lessors, but the problem of splicing bright and dark lines will still occur when used on site

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