US 12,147,009 B2
Textured region to reduce specular reflectance including a low refractive index substrate with higher elevated surfaces and lower elevated surfaces and a high refractive index material disposed on the lower elevated surfaces
Shandon Dee Hart, Elmira, NY (US); Karl William Koch, III, Elmira, NY (US); Wageesha Senaratne, Horseheads, NY (US); and William Allen Wood, Painted Post, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Filed by Corning Incorporated, Corning, NY (US)
Filed on Jul. 7, 2021, as Appl. No. 17/369,279.
Claims priority of provisional application 63/049,843, filed on Jul. 9, 2020.
Prior Publication US 2022/0011477 A1, Jan. 13, 2022
Int. Cl. G02B 1/11 (2015.01); C03C 15/00 (2006.01); C23C 14/02 (2006.01); C23C 14/04 (2006.01); C23C 16/02 (2006.01); C23C 16/04 (2006.01); G02B 1/118 (2015.01); G02B 1/14 (2015.01); G02B 5/02 (2006.01); G02B 27/42 (2006.01)
CPC G02B 1/11 (2013.01) [C03C 15/00 (2013.01); C23C 14/021 (2013.01); C23C 14/042 (2013.01); C23C 16/0227 (2013.01); C23C 16/042 (2013.01); G02B 1/118 (2013.01); G02B 1/14 (2015.01); G02B 5/0221 (2013.01); G02B 5/0268 (2013.01); G02B 27/4205 (2013.01); G02B 27/4272 (2013.01); G02B 2207/101 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A substrate for a display article, the substrate comprising:
a primary surface; and
a textured region on at least a portion of the primary surface, the textured region comprising:
one or more higher surfaces residing at a higher mean elevation parallel to a base-plane disposed below the textured region;
one or more lower surfaces residing at a lower mean elevation parallel to the base-plane that is less than the higher mean elevation, and
a high-refractive index material disposed on each of the one or more lower surfaces, the high-refractive index material forming one or more intermediate surfaces residing at an intermediate mean elevation parallel to the base-plane that is greater than the lower mean elevation but less than the higher mean elevation, the high-refractive index material comprising an index of refraction that is greater than an index of refraction of the substrate or a low-index material providing the one or more higher surfaces,
wherein, the intermediate mean elevation of the high-refractive index material is greater than the lower mean elevation of the one or more lower surfaces by a distance within a range of from 100 nm to 200 nm.