A LED display module detection device and detection method thereof

Abstract

The invention discloses an LED display module detection device and a detection method thereof. An LED display module detection device comprises a detection device body, a first lifting platform and a second lifting platform arranged on a base inside the detection device body , the first camera device is set on the first lifting platform, the second camera device is set on the second lifting platform, and an output detection display unit is placed on the operating table of the detection device body directly above the first camera device. A platform for placing a display unit to be tested is set on the operating table of the detection device body directly above the second camera device, and a display platform and a display unit detection system are also set on the detection device body.

Description

technical field [0001] The invention relates to LED lighting device detection technology, in particular to a LED display screen module detection device and a detection method thereof. Background technique [0002] With the development of LED display technology, LED display applications and LED lighting applications have become more and more widely used in various lighting applications due to their low energy consumption, strong color reproduction, long life, huge size, and unique shapes. In these applications, LED display module welding quality and chip fault detection technology are increasingly showing their importance. Especially for LED display applications in major occasions, due to the importance of activities, the requirements for judgment and maintenance of LED display failures are also higher. [0003] In the current LED display application, although the majority of users have realized the significance of LED display fault detection technology, major manufacturers ...

AI Technical Summary

Problems solved by technology

[0013] 1) Low efficiency: Depending on proficiency and physical condition, each person can do 200-500pics of testing a day; the workload of each factory: according to different production capacity, about 500-2000pics / day;

[0014] 2) High missed detection rate: the current missed detection rate is between 8% and 15%; a high missed detection rate brings high repair costs;

[0016] b) If the faulty module is not detected in this process, the unit module will be assembled - glue filling - upper mask - aging - assembling the box - leaving the factory, if a fault is found in the aging process , the maintenance cost paid is about 8 to 10 times that of direct repair; however, there are generally thousands of modules that are aging at the same time in the aging process, and a single "dead light" is often not found, and the problem is often found in the factory. It was discovered in the previous setting process that the factory needs to pay more than twice the cost for this failure.

[0017] c) People will have many uncertain factors such as fatigue, health, emotions, etc., and because workers who have been in this position for a long time, it is easy to cause visual fatigue or even vision degradation; the missed detection rate remains high due to human factors; high A high missed detection rate means high post-process costs;

[0018] 3) The human eye cannot detect the target more accurately: In theory, the human eye can recognize a 3% difference in brightness, but in fact, for discrete LED chips with brightness differences, especially under the premise of continuous work of workers, the human eye is generally LED illuminants whose brightness difference is less than 40% cannot be identified;

[0019] 4) Great harm to workers' health:

[0024] e) This manual inspection method will be considered by foreign buyers as a lack of human protection, especially for customers from developed countries, such as buyers from Europe and the United States

[0025] Existing detection equipment and detection methods are backward and need to be improved

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