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Proceedings Paper

Analysis of current driving capability of pentacene TFTs for OLEDs
Author(s): Gi Seong Ryu; Hyun Sook Byun; Yong Xian Xu; Kyung Soo Pyo; Ki Beom Choe; Chung Kun Song
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Paper Abstract

The flexible display and the application of Roll-To-Roll process is difficult because high temperature process of a-Si;H TFT and poly-Si TFT limited the use of plastic substrate. We proposed AMOLED using Pentacene TFT (OTFT) to fabricate flexible display. The first stage for OTFT application to OLED, we analyzed OTFT as driving device of OLED. The process performed on glass and plastic (PET) substrate that is coated ITO and PVP is used for gate insulator. The field effect mobility of the fabricated OTFT is 0.1~0.3cm2/V•sec and Ion/Ioff current ratio is 103~105. OLED is fabricated with two stories structure of TPD and Alq3, and we can observe the light at 5V by the naked eye. The wavelength of observed lights is 530nm ~550nm. We can confirm the driving of OLED due to OTFT using Test panel and observe OLED control by gate voltage of OTFT. Also, we verify designed structure and process, and make a demonstration fabricating 64 by 64 backplane based on Test panel.

Paper Details

Date Published: 12 January 2005
PDF: 8 pages
Proc. SPIE 5632, Light-Emitting Diode Materials and Devices, (12 January 2005);
Show Author Affiliations
Gi Seong Ryu, Dong-A Univ. (South Korea)
Hyun Sook Byun, Dong-A Univ. (South Korea)
Yong Xian Xu, Dong-A Univ. (South Korea)
Kyung Soo Pyo, Dong-A Univ. (South Korea)
Ki Beom Choe, Dong-A Univ. (South Korea)
Chung Kun Song, Dong-A Univ. (South Korea)

Published in SPIE Proceedings Vol. 5632:
Light-Emitting Diode Materials and Devices
Gang Yu; Chuangtian Chen; Changhee Lee, Editor(s)

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