期刊
JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY
卷 19, 期 1, 页码 94-99出版社
WILEY
DOI: 10.1889/JSID19.1.94
关键词
Flexible display; AMOLED; organic TFT; phosphorescent OLED; plastic film
The image quality of an OTFT-driven flexible AMOLED display has been improved by enhancing the performance of OTFTs and OLEDs. To reduce the operating voltage of OTFTs on a plastic film, Ta2O5 with a high dielectric constant was used as a gate insulator. The organic semiconductor layer of the OTFT was successfully patterned by a polymer separator, which is an isolating wall structure using an organic material. The OTFT performance, such as its current on/off ratio, carrier mobility, and spatial uniformity on the backplane, was enhanced. A highly efficient phosphorescent OLED was used as a light-emission device. A very thin molybdenum oxide film was introduced as a carrier-injection layer on a pixel electrode to reduce the operating voltage of the OLED. After an OTFT-driven flexible AMOLED display was fabricated, the luminance and uniformity on the display was improved. The fabricated display also showed clear moving images, even when it was bent at a low operating voltage.
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