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What is the lifetime of LED screens?

Some manufacturers state the lifetime of 50.000 hours, others up to 100.000 hours. The main problem is that this value is a theoretical lifetime of LED diodes when running them at certain conditions stated by manufacturer of electronic components. If LED screen manufacturers keeps these parameters, the brightness of diodes lowers to half after the given time. Actually, most LED screen manufacturers are not able to keep all these parameters in desired values, especially operating temperature and current. That's why most screens do not exceed the lifetime of 20.000 hours. Four crucial parameters influence the LED screen lifetime. If you want to know more, we will explain that during personal meeting.