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

作　　者：谢强[1] 李宏建[1] 黄永辉[1] 代国章[1] 彭景翠[1] 

机构地区：[1]湖南大学应用物理系,湖南长沙410082

出　　处：《液晶与显示》2004年第6期462-467,共6页Chinese Journal of Liquid Crystals and Displays

基　　金：湖南省杰出青年科学基金资助项目(No.03JJY1008);中国博士后科学基金资助项目(No.2004035083)

摘　　要：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.

关 键 词：OLED 有源驱动 阈值电压补偿 

分 类 号：TN873.31[电子电信—信息与通信工程] TN321.5