High-Resolution Flexible AMOLED Display Integrating Gate Driver by Metal-Oxide TFTs

This letter proposes a high-resolution [200 (RGB) * 600, 282 PPI) flexible active matrix organic light emitting display (AMOLED) integrating a new gate driver, of which the substrate is a polyimide material. Flexible In-Zn-O thin-film transistors (TFTs) with back channel etched structure reveal a go...

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Bibliographic Details
Published in:IEEE electron device letters 2018-11, Vol.39 (11), p.1660-1663
Main Authors: Wu, Wei-Jing, Chen, Jun-Wei, Wang, Jun-Sheng, Zhou, Lei, Tao, Hong, Zou, Jian-Hua, Xu, Miao, Wang, Lei, Peng, Jun-Biao, Chan, Mansun
Format: Article
Language:English
Subjects:
Active matrix displays
Active matrix organic light emitting diodes
Curvature
Flexible active matrix organic light emitting display (AMOLED)
gate driver
Gate drivers
High resolution
Logic gates
metal oxide thin-film transistors (TFTs)
Metals
Organic light emitting diodes
Semiconductor devices
Substrates
Thin film transistors
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Summary:This letter proposes a high-resolution [200 (RGB) * 600, 282 PPI) flexible active matrix organic light emitting display (AMOLED) integrating a new gate driver, of which the substrate is a polyimide material. Flexible In-Zn-O thin-film transistors (TFTs) with back channel etched structure reveal a good stability at different curvature radii. The integrated gate driver employing bi-side driving method consists of seven TFTs and two capacitors with the advantages of simple topology, low power, full-swing output, and small area. The conventional 2T1C pixel circuit with top emission structure is applied to the proposed flexible AMOLED panel. And the flexible panel has a good full-color display quality without obvious defects at the bending condition. It is shown that the output signals of the proposed gate driver have no distortion and good noise suppressed characteristics even up to 600 stages and maintain stable under a long-time continuous operation up to 15 days.
ISSN:0741-3106
1558-0563
DOI:10.1109/LED.2018.2871045