提出了一种比率电流+分场的概念,结合电流比率加分场的方法,设计了一种电流移位(复用)的驱动方法.这种电流比率+电流移位的方法比现有的脉宽调制(PWM)法结构简单、时序简化,容易电路集成.既保留PM-OLED低成本的优点又达到较高的灰度级显示,避免使用大的电流驱动.用较少的分级电流(4个成比例电流)实现较高的灰度级(16级),实现了数字化显示,电流信号还可以避免串扰的影响.
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