Novel Driving Scheme to remove residual image sticking in AMOLED

  • Parikh, Kunjal (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Choi, Joon-Hoo (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Cho, Kyu-Sik (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Huh, Jong-Moo (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Park, Kyong-Tae (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Jeong, Byoung-Seong (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Park, Yong-Hwan (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Kim, Tae-Youn (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Lee, Baek-Woon (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Kim, Chi-Woo (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.)
  • Published : 2008.10.13

Abstract

We hereby report novel driving scheme to eliminate effect of "residual" image sticking (RRI) problem which arises due to hysteresis problem in Thin Film Transistor (TFT) in AMOLED Displays. The driving scheme applies "black" voltage after every data voltage period in order to drive AMOLED in uni-direction. The system can be easily implemented with 120 Hz driving scheme which is well matured in AMLCD industries. Our analyses show systematic evaluation of the problem and thereby solving it by simple methods which will be significantly effective of driving OLED towards mass manufacturing stage.