Method and system for detecting heat dissipation uniformity of LED display device

Abstract

The invention relates to a method and system for detecting heat dissipation uniformity of an LED display device. The method for detecting heat dissipation uniformity of the LED display device includes the steps that the LED display device is controlled to display a first monochrome picture, a second monochrome picture and a third monochrome picture; the first monochrome picture displayed by the LED display device is shot multiple times according to the first preset time interval, the second monochrome picture displayed by the LED display device is shot multiple times according to the second preset time interval, the third monochrome picture displayed by the LED display device is shot multiple times according to the third preset time interval, and then a plurality of first images for detection and corresponding to different moments, a plurality of second images for detection and corresponding to different moments and a plurality of third images for detection and corresponding to different moments are acquired; the first images for detection, the second images for detection and the third images for detection are analyzed and processed, and then brightness decay information of a plurality of LED lamp points in the first color, a plurality of LED lamp points in the second color and a plurality of LED lamp points in the third color is acquired; according to the distribution situation of the brightness decay information of the LED lamp points in the first color, the LED lamp points in the second color and the LED lamp points in the third color, heat dissipation uniformity of the LED display device is evaluated. By means of the characteristic that LED brightness decay is related to the temperature, the temperature distribution situation in the display process of the LED display device is indirectly acquired, and therefore heat dissipation uniformity is detected.

Description

technical field [0001] The invention relates to the technical field of display screen detection, in particular to a detection method and a detection system for the uniformity of heat dissipation of an LED display device. Background technique [0002] Due to the uneven heat dissipation caused by the production process, the physical characteristics of the device and the circuit design, various display devices generally have different forms of display defects, and these display defects will have varying degrees of impact on the display effect. Therefore, in the development and production process of the display screen, it is necessary to detect whether the heat dissipation of the product is uniform. In the prior art, there are mainly two types of heat dissipation uniformity detection: (1) using an infrared thermometer, but it requires two-dimensional scanning, row by column, resulting in low detection efficiency; (2) using an infrared thermal imager, But its application range i...

AI Technical Summary

Problems solved by technology

In the prior art, there are mainly two types of heat dissipation uniformity detection: (1) using an infrared thermometer, but it requires two-dimensional scanning, row by column, resulting in low detection efficiency; (2) using an infrared thermal imager, But its scope of application is small and the cost is high

Images