Foldable ultrathin glass with transparent, impact-resistant hard coating

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United States of America Patent

PATENT NO 12116308
APP PUB NO 20230088192A1
SERIAL NO

17903055

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Abstract

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A foldable ultrathin glass article includes an ultrathin chemically-tempered foldable glass substrate having a thickness of approximately 100 microns or less and a compressive surface stress of at least 100 MPa. A single-layer hard coating is bonded to the first and/or second surface of the ultrathin tempered glass foldable substrate without an adhesive layer. The hard coating includes at least one silsesquioxane having a silicon-oxygen core framework directly bonded to the ultrathin tempered glass foldable substrate. The impact resistance defined by a maximum pen drop height without glass failure is at least four times greater than the ultrathin tempered glass foldable substrate without the hard coating. The hard coating has a surface hardness of at least 7H surface hardness and has a hydrophobic surface with a water contact angle of at least 100°. The coating has a transparency of at least 98 percent compared to uncoated substrates.

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Patent Owner(s)

Patent OwnerAddress
NANO AND ADVANCED MATERIALS INSTITUTE LIMITEDHONG KONG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cheng, Yubo Hong Kong, HK 4 9
Han, Jianping Hong Kong, HK 14 32
Liu, Chenmin Hong Kong, HK 60 83
Qin, Shiwei Hong Kong, HK 17 66
Tse, Chui Wan Hong Kong, HK 4 1
Zhu, Yong Hong Kong, HK 161 748

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