A full-color, top-emission active-matrix organic light-emitting diode display build on a flexible substrate (flexible
OLED) has been successfully driven by organic-TFTs made by a scalable manufacturing process (lift-off and shadow
mask free process). The OTFTs were fabricated with low cost metal (copper and aluminum) electrodes. The backplane
architecture was developed at low temperatures (<150°C) with solution-processed organic dielectrics. The fabricated
TFTs are reliable against bending stress with 2-mm radius. With this ultra high flexibility of the OTFT, the display
shows no significant degradation for an operating period >25 hours with more than 10,000 times bending.
We have developed a flexible full-color OLED display driven by pentacene organic TFTs (OTFTs) with bottom-gate
bottom-contact configuration. We will discuss an integration process of the display and improvement of stability by
selective treatment of interfaces in the OTFTs. We have developed selective treatment of the surface of poly (vinyl-phenol)
gate insulator using the selective growth of poly(<i>p</i>-chloroxylylene) after S/D electrode formation. This treatment
has reduced deep carrier-trap density at semiconductor/gate insulator interface and has drastically suppressed bias-stress
instability of the OTFTs. Direct carrier-injection structure with selective tiole treatment of S/D electrodes has been also
developed. This suppresses the degradation of the OTFT due to increase of contact resistance in the integration. These
techniques are promising for reliable display applications.