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69‐2: Development of Flexible Cover Window for Large Foldable Display with a Pen‐Touch Function
Author(s) -
Park Youngjoo,
Bang Soyeon,
Hwang Byoung-Har,
Jang Sejin,
Kwak Taehyoung,
Lee JounHo,
Kim JeomJae,
Yoon SooYoung
Publication year - 2021
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.14867
Subject(s) - window (computing) , cover (algebra) , polyimide , materials science , coating , computer science , computer graphics (images) , engineering , layer (electronics) , composite material , mechanical engineering , operating system
Colorless polyimide (CPI) film is one of promising candidates for a foldable display because of its excellent mechanical and optical properties. To achieve a good and high reliable foldability, engineers must take into account thickness for foldability and mechanical hardness for pen touch function. To compromise this trade‐off relationship, LG Display chose CPI as a base film of the cover window and double‐sided thin hard coating for a pen touch solution. This paper shows why LG Display choose the proposed configuration with detail data.