Passive OLED and Active OLED

OLED can be divided into two types according to the driving method: passive driving (Passive Matrix; PMOLED) and active driving (Active Matrix; AMOLED). The driving method of OLED is current driving. The passive method has a simpler structure, and the driving current determines the grayscale. The resolution and image quality of small-sized products are quite good, but if it is to be developed into large-sized application products, it may increase power consumption and reduce life. The best corresponding is to use active driving method, because the active current rectification is better than the passive method, and it is not easy to cause leakage. At the same time, when using low-temperature polysilicon (Poly-si) TFT technology, the current can generate small TFTs with low impedance, which meets the needs of large-size and large-screen OLED displays.