Brightness control method, LED-lattice module and LED-lattice screen

Abstract

The embodiment of the invention discloses a brightness control method, an LED-lattice module and an LED-lattice screen, and aims to achieve brightness compensation of uneven seams in the LED-lattice screen. The brightness control method provided by the embodiment of the invention comprises the following steps: utilizing a distance sensor to acquire the detection distance between the edge of an LED-lattice module at the end and that of an adjacent LED-lattice module; judging the relationship between the detection distance and the standard distance; turning down the brightness of LEDs at the edge of the LED-lattice module at the end if the detection distance is smaller than the standard distance; and turning up the brightness of LEDs at the edge of the LED-lattice module at the end if the detection distance is larger than the standard distance. By implementing the scheme of the invention, uneven brightness of the LED-lattice screen at the spliced part due to uneven seams between the LED-lattice modules is eliminated, and accordingly, the display effect of the whole screen is improved.

Description

technical field [0001] The invention relates to the technical field of LED display, in particular to a brightness adjustment method, an LED dot matrix module and a screen. Background technique [0002] A large LED (Light Emitting Diode, Light Emitting Diode) dot matrix screen is composed of multiple LED dot matrix modules spliced ​​together. [0003] In the same LED dot matrix module, the distance between the two LEDs in each row and column is the same. In addition, in order to ensure that the overall display brightness of the large LED dot matrix screen is consistent, it is required that the edge of the adjacent LED dot matrix module after splicing The distance between the LEDs is also the same as the aforementioned distance, that is, the two sides of the seam are required to be parallel and the distance is equal to a standard distance. [0004] However, the seams between LED dot matrix modules are not necessarily uniform during actual splicing. For example, see figure 1...

AI Technical Summary

Problems solved by technology

[0005] The uneven joints between the LED dot matrix modules make the brightness of the LED dot matrix screen uneven at the joint, which affects the display effect of the entire screen.

At present, there is no technology that can solve the problem of uneven brightness of LED dot matrix screens due to uneven seams between LED dot matrix modules.

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