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在电流编程像素电路的基础上提出了一种新的交流驱动电路结构.该电路结构不仅能实现OLED的交流驱动,而且能避免由于制作过程的变化和长时间的工作引起的驱动管阈值电压漂移的现象,这种现象将导致OLED显示屏的亮度不一致.另外这种驱动方式还能消除在反偏脉冲起始和结束时刻的尖峰电流.最后,用AIM-SPICE软件对电路进行了仿真,仿真结果表明OLED器件在恢复时间内处于反偏状态.
Based on the current programming pixel circuit, a new AC drive circuit structure is proposed, which not only can realize the AC drive of OLED, but also can avoid the drifting of the drive transistor threshold voltage due to the change of the fabrication process and the long time work The phenomenon will lead to inconsistencies in the brightness of the OLED display. In addition, this driving method can also eliminate the peak current at the beginning and the end of the reverse-biased pulse. Finally, the circuit simulation with AIM-SPICE software, simulation The results show that the OLED device is in a reverse biased state during the recovery time.