Working Principle of OLED

Tsingtek OLED Display Module has a simple structure, which has an organic light emitting layer between anodes and cathodes. When a lcd module direct current is applied to the device, holes with positive charges are injected from anodes and electrons with negative charges are injected from cathodes into the organic light emitting layer. Then, the organic molecules emit light when the positive hole and the negative electron couple and generate energy in the organic light emitting layer. Because most of the organic materials are insulators and do not easily conduct current, organic light emitting layers need to have very thin structures, approximately 0.1um.