OLED colorization method

OLED colorization method

OLED can be divided into three types based on the colorization method: 1. "RGB three-color light-emitting structure", 2. "Color conversion structure [white light + color filter]", and 3. "Color filter film [blue light + color conversion layer]". Since the three-color light-emitting structure uses independent light-emitting materials RGB (red, green and blue) to arrange the three colors, it has the characteristics of good light-emitting efficiency and does not need to add a color filter or a color conversion layer film. It is currently the most commonly used method by manufacturers; but since the three-color method process uses a shadow mask evaporation method, the color fineness is poor. The color conversion method uses blue light-emitting materials to emit light, and a thin film is added in the middle when emitting light, so the light-emitting efficiency is not as good as the three-color light-emitting method. The color filter uses white light-emitting materials to emit light, and a layer of color filter is added in the middle, so the light-emitting efficiency is also not as good as the three-color light-emitting method. Currently, there are not many manufacturers with white light technology.