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Fine metal mask material and manufacturing process for high‐resolution active‐matrix organic light‐emitting diode displays
Author(s) -
Kim Chiwoo,
Kim Kisoo,
Kwon Ohseob,
Jung Jaehoon,
Park Jong Kab,
Kim Doh Hoon,
Jung Kiro
Publication year - 2020
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 - 10.1002/jsid.901
Subject(s) - materials science , amoled , oled , invar , process (computing) , optoelectronics , thinning , manufacturing process , active matrix , computer science , nanotechnology , composite material , layer (electronics) , operating system , thin film transistor , ecology , thermal expansion , biology
Manufacturing fine metal mask (FMM) is one of the biggest hurdles to realize the ultra‐high definition (UHD) grade AMOLED displays for smartphone and augmented reality (AR). We have developed the state‐of‐the‐art material and processing technology to achieve 800ppi or higher‐resolution FMMs. The Invar thinning and the thermal damage‐free laser ablation process realized us achieving the FMM for UHD displays.