The 26th International Display Workshops (IDW '19)

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Oral Presentation

[MEET5] Micro/NanoDisplays and Nanotechnology Application (1)

Special Topics of Interest on Micro/Mini LEDs

Fri. Nov 29, 2019 1:20 PM - 2:40 PM Conference Hall (1F)

Chair: Poopathy Kathirgamanathan (Brunel University London)
Co-Chair: Kyu Chang Park (KyungHee University)

1:40 PM - 2:00 PM

[MEET5-2(Invited)] Highly Efficient Stack Quantum-dot Light Emitting Diodes using Charge Generation Junctions

*Jin Jang1, Suihui Lee1, Hyo-min Kim1, Yuanfeng Chen1 (1. Advanced Display Research Center, Kyung Hee University (Korea))

Keywords:Micro-LED, LTPS TFT, Oxide TFT, TFT Backplane

We review here the LTPS and oxide TFT technologies for micro-LED displays. We have developed BLA of a-Si for LTPS TFTs, exhibiting a high field-effect mobility over 150cm2/Vs for p-channel device. On theother hand, oxide TFTs using bulk-accumulation (BA) mode exhibits an effective field effect mbility over 50 cm2/Vs. The BLA TFT backplane was applied to drive a micro-LED displays using digital driving. Oxide TFT backplane was used for micro-LED with high contrast ratio. The LTPO technology and QD color conversion technology will be explained for micor-LED displays.