几种OLED有源驱动电路中像素单元电路的分析

Analyses of Several Pixel Driving Circuits for AM-OLED

在有机电致发光器件两管单元有源驱动电路的基础上,分析了几种四管单元电流控制型和电压控制型的驱动电路,它们都能补偿TFT阈值电压的漂移,但都有各自的优缺点:前者能准确地调节显示的灰度,但它的响应速度慢;后者的响应速度快,但不能准确地调节显示的灰度。

Based on the two-TFT pixel driving circuit for AM-OLED, 4-TFT driving circuits which include current-programmed and voltage-programmed were analyzed. Although they could compensate the threshold voltage variations, each of them has its advantages and disadvantages: the former could control the scale of the brightness well, but its disadvantage was slow response; the latter has fast response, but it could not control the scale of the brightness well.