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Medical displays by using plasma‐beam‐alignment technology
Author(s) -
Lee ChinYang,
Liu ChiHung,
Chen ChihWei,
Miki Saodo,
Chen HuangMing Philip,
Lin Shermann,
Su PoHua,
Lee CheinDhau
Publication year - 2008
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.2835038
Subject(s) - materials science , plasma , scanning electron microscope , x ray photoelectron spectroscopy , plasma display , polyimide , contact angle , cathode ray , optics , analytical chemistry (journal) , optoelectronics , layer (electronics) , electron , nanotechnology , electrode , composite material , chemistry , nuclear magnetic resonance , chromatography , physics , quantum mechanics
— Novel anode layer plasma within minimum chamber space was developed for non‐contact alignment process. The plasma‐treated polyimide (PI) surface showed no particle contamination and no micro‐scratches. Surface morphology was investigated by using scanning electron microscope (SEM), an atomic force microscope (AFM), and X‐ray photoemission spectroscopy. The different oxygen‐to‐carbon ratio ([O]/[C] ratio) for XPS spectra indicated a composition change after plasma treatment. Surface pretilt angles were varied from 0 to 2.1° under different plasma exposure times. Finally, a prototype 20.8‐in. QXGA IPS‐mode gray‐scale medical liquid‐crystal display was successfully demonstrated with high contrast ratio, excellent uniformity, and wide viewing angle using this new plasma‐beam‐alignment technique.