An Active Matrix Process for Displays Utilizing Conventional or Inverted OLEDs
We have developed a four mask low temperature poly-Si (LTPS) TFT process where the maximum temperature does not exceed 450℃. Crystallization from amorphous to polycrystalline Silicon is performed with single area excimer laser crystallization while we use ion beam implantation for the doping of drain and source. Our p-channel TFTs are suitable to drive conventional OLEDs while our n-channel devices are appropriate for inverted OLED stacks. The presented TFT process has been customized to drive both top emitting and bottom emitting OLEDs. We have also investigated the interface between TFTs and OLED and can provide backplanes for both small molecules and polymers. To prove the functional capability of our TFTs we have produced active matrix backplanes. In this paper we will present a fabricated monochrome active matrix pLED display, based on the basic two TFT pixel circuit. The realized displays are considered to be used as a reference to enhanced displays with new innovative active matrix driving concepts which we are currently investigating, e. g. backplanes with integrated compensation circuits or displays with integrated drivers.
LTPS TFTs Active Matrix OLED/pLED Backplanes/Displays
Efstathios Persidis Steffen Hergert Patrick Schalberger Norbert Fruehauf
Chair of Display Technology, Universitat Stuttgart, 70569 Stuttgart, Germany
国际会议
上海
英文
703-708
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）