A 5.8‐in. phosphorescent color AMOLED display fabricated by ink‐jet printing on plastic substrate |
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| Authors: | Mitsunori Suzuki Hirohiko Fukagawa Yoshiki Nakajima Toshimitsu Tsuzuki Tatsuya Takei Toshihiro Yamamoto Shizuo Tokito |
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| Affiliation: | 1. Japan Broadcasting Corp. (NHK), Science and Technical Research Laboratories, 1‐10‐11 Kinuta, Setagaya‐ku, Tokyo 157‐8510, Japan;2. Japan Broadcasting Corp. (NHK), Matsuyama Broadcasting Station, Ehime, Japan |
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| Abstract: | Abstract— A flexible phosphorescent color active‐matrix organic light‐emitting‐diode (AMOLED) display on a plastic substrate has been fabricated. Phosphorescent polymer materials are used for the emitting layer, which is patterned using ink‐jet printing. A mixed solvent system with a high‐viscosity solvent is used for ink formulation to obtain jetting reliability. The effects of evaporation and the baking condition on the film profile and OLED performances were investigated. An organic thin‐film‐transistor (OTFT) backplane, fabricated using pentacene, is used to drive the OLEDs. The OTFT exhibited a current on/off ratio of 106 and a mobility of 0.1 cm2/V‐sec. Color moving images were successfully shown on the fabricated display. |
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| Keywords: | Flexible display phosphorescent OLEDs ink‐jet printing organic TFTs |
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