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31‐4: Ultra‐Thin Chemically Strengthened Cover Glass with High Impact Failure Resistance for Foldable Devices
Author(s) -
Fujiwara Yusuke,
Kashima Izuru,
Akiba Shusaku
Publication year - 2018
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.12584
Subject(s) - materials science , impact resistance , composite material , bending , silicate glass , toughened glass , isotropic etching , etching (microfabrication) , layer (electronics)
Ultra‐thin chemically strengthened glasses showed enough flexibility and impact failure resistance for foldable devices. Almino‐silicate glasses of 0.1 mm in thickness with slimed using HF etching with 965 MPa of CS and 15 µm of DOL applying our new process achieved 50 % higher impact failure resistance for falling object than those glasses applying conventional chemical strengthening. Furthermore, those glasses achieved 5.9 mm gap distance by bending. The effects on improving both impact failure resistance and bending strength are considered to be attributed by not only high CS but also the new process which removes the glass surface where tiny flaws exist.