Session and scheduling information are listed below. Select a session from the list and press "Go" to view the abstracts for that session.
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Session
14
: Highly Reliable TFT for OLEDs |
Active Matrix Devices
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Tuesday, May 14 / 02:00 PM - 3:00 PM / San Jose Convention Center, LL21EF
Chair:
Junho Song, Korea University, Seoul, South Korea
Co-Chair:
Sang Hee Park, KAIST, Daejeon, South Korea
14.1 - A Study on Flexibility Improvement of AMOLED Backplane and Mask Reduction Process Architecture Using Photo-Sensitive Organic Insulation Films (2:00 PM - 2:20 PM)
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In Young Chung, Keun Woo Kim, Ju Won Yoon, Byung Soo So, Keun Ho Jang
Samsung Display Co., Ltd. Yongin South Korea
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Jin Baek Bae, Jin Jang
Kyung Hee University Seoul South Korea
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A backplane suitable for flexible AMOLEDs was secured by replacing an inorganic film of SiNx + SiO2 with organic film polyimide. The authors obtained equivalent TFT transfer characteristics of the device compared to an inorganic interlayer structure by applying a low-temperature buffer and 2nd gate insulator SiNx to the organic interlayer TFT device.
14.2 - Development of High Mobility and Reliability Metal-Oxide TFT for 13.2-in. AMOLED Display (2:20 PM - 2:40 PM)
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Guowen Yan, Dejian Wang
Hefei Visionox Technology Co., Ltd. Hefei China
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Lidong Ding, Lin Xu, Xiaoqi Sun, Fa-Hsyang Chen Chen, Rubo Xing, Junfeng Li
Kunshan Govisionox Optoelectronics Co., Ltd. Kunshan China
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A 13.2-in. AMOLED panel with 262 ppi is fabricated with high-mobility metal-oxide TFTs (thin-film transistors). The TFTs have mobility ~34cm2/Vs. On Gen6 glass, a small Vth variation with channel length 3.5um has been obtained. Moreover, the TFT shows small Vth shift under positive/negative bias temperature stress (PBTS/NBTS).
14.3 Late-News Paper: Channel-Etched Coplanar TFTs for Applying a-IGZO to High-Resolution and IT Applications (2:40 PM - 3:00 PM)
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Heung Jo Lee, Pil Sang Yun, Jong Uk Bae, Yoo Seok Park, Woo Sup Shin, Hyeon Woo Lee
LG Display Co., Ltd. Paju South Korea
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Self-aligned a-IGZO coplanar TFTs are adopted to high-resolution monitors for gaming. Not only the size of the TFT but also its storage capacity have become important factors in terms of aperture ratio. The authors develop a structure that maximizes the aperture ratio by using a thin gate insulator (GI). They succeed in developing a 27-in. QHD OLED monitor by applying a self-aligned coplanar structure/process that allows the active layer to simultaneously configure channels and wiring, and controlling degradation of channel characteristics.