US 12,030,276 B2
Foldable glass article including an optically transparent polymeric hard-coat and methods of making the same
Kuan-Ting Kuo, Chubei (TW); and Robert Lee Smith, III, Horseheads, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Appl. No. 16/970,144
Filed by CORNING INCORPORATED, Corning, NY (US)
PCT Filed Feb. 6, 2019, PCT No. PCT/US2019/016859
§ 371(c)(1), (2) Date Aug. 14, 2020,
PCT Pub. No. WO2019/160723, PCT Pub. Date Aug. 22, 2019.
Claims priority of provisional application 62/630,475, filed on Feb. 14, 2018.
Prior Publication US 2020/0398530 A1, Dec. 24, 2020
Int. Cl. B32B 17/10 (2006.01); B32B 7/12 (2006.01); C09D 175/04 (2006.01); C09D 183/04 (2006.01)
CPC B32B 17/10 (2013.01) [B32B 7/12 (2013.01); B32B 17/10018 (2013.01); B32B 17/10091 (2013.01); B32B 17/10137 (2013.01); B32B 17/10165 (2013.01); B32B 17/10174 (2013.01); C09D 175/04 (2013.01); C09D 183/04 (2013.01); B32B 2250/02 (2013.01); B32B 2307/412 (2013.01); B32B 2307/536 (2013.01); B32B 2307/558 (2013.01); B32B 2307/732 (2013.01); B32B 2457/20 (2013.01); Y10T 428/31598 (2015.04); Y10T 428/31663 (2015.04)] 11 Claims
OG exemplary drawing
 
1. A glass article, comprising:
an ultra-thin glass layer;
an optically transparent adhesive layer disposed on the ultra-thin glass layer; and
an optically transparent polymeric hard-coat layer disposed on the optically transparent adhesive layer, wherein the optically transparent polymeric hard-coat layer is a silsesquioxane polymer layer, an aliphatic hexafunctional urethane acrylate layer, or an aromatic hexafunctional urethane acrylate layer and the optically transparent polymeric hard-coat layer comprises:
a pencil hardness of 8H or more, and
a thickness in a range of 10 microns to 120 microns,
wherein the glass article comprises an impact resistance defined by the capability of the glass article to avoid failure at a pen drop height that is 2 times or more than that of a control pen drop height of the ultra-thin glass layer without the optically transparent polymeric hard-coat layer, wherein the pen drop height and the control pen drop height are measured according to the Pen Drop Test, and
wherein the glass article survives a bend radius of 5 mm or less.