Electro-mechanical Analyses of Thin Film Transistors for Flexible Displays

  • Saran, Neerja (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Roh, Nam-Seok (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Kim, Sang-Il (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Lee, Woo-Jae (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Kim, Jong-Seong (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Hwang, Tae-Hyung (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Hong, Seok-Joon (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Kim, Myeong-Hee (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Lim, Soon-Kwon (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.) ;
  • Souk, Jun-Hyung (LCD R&D Center, LCD Business Unit, Samsung Electronics Corp.)
  • Published : 2008.10.13

Abstract

Good mechanical properties of thin-film transistors on plastic substrates are an essential parameter in the development of robust flexible displays. In this paper, a careful investigation is carried out on TFT backplane on plastic substrates under cyclic bending conditions. Bending modes of tensile and compressive as well as parallel and perpendicular orientation-dependent bending of channel have been analyzed carefully. This analysis will be helpful in knowing the electro-mechanical performance boundaries of the TFT devices so as to determine the bending limitations of our flexible displays.