| 摘要 |
The present invention provides an AC drive circuit for OLED, a drive method and a display apparatus. The AC drive circuit for OLED comprises a light emitting control unit, a charging control unit, a drive unit, a storage unit, a first voltage signal input terminal, a second voltage signal input terminal and a third voltage signal input terminal. The AC drive circuit for OLED enables that the current flowing in an OLED is independent of the internal resistance of the circuit, thus a constant current flowing in the OLED is ensured, and the brightness of the OLED will not be influenced by the internal resistance of the circuit. Meanwhile, the AC drive circuit for OLED compensates the threshold voltage of the drive transistor, thus the influence of the threshold voltage of the drive transistor on the current of the OLED for emitting light is eliminated, thereby the display panel comprising the AC drive circuit for OLED has a good brightness uniformity. In addition, the AC drive circuit for OLED reversely biases the OLED, thereby the un-recombined carriers accumulated at the light emitting interface inside the OLED and the built-in electrical field formed by these carriers are eliminated, thus avoiding the steadily rising threshold voltage of the OLED and its influence on the brightness of the OLED, and increasing the lifetime of the OLED. |
