US 12,207,539 B1
Foldable substrates having a cavity filled with a polymer and methods of making
Gabriel Pierce Agnello, Corning, NY (US); Matthew Wade Fenton, Elmira, NY (US); Aize Li, Painted Post, NY (US); Katherine Anne Lindberg, Corning, NY (US); Ren Liu, Horseheads, NY (US); Robert Arthur McIntosh, Painted Post, NY (US); Adam James Ruggles, Corning, NY (US); and Vitor Marino Schneider, Painted Post, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Jan. 10, 2024, as Appl. No. 18/409,627.
Claims priority of provisional application 63/545,576, filed on Oct. 25, 2023.
Int. Cl. H10K 59/122 (2023.01); H01L 23/538 (2006.01); H10K 71/00 (2023.01); H10K 71/13 (2023.01); H10K 71/20 (2023.01); H10K 77/10 (2023.01); H10K 102/00 (2023.01)
CPC H10K 77/111 (2023.02) [H01L 23/5387 (2013.01); H10K 71/135 (2023.02); H10K 71/231 (2023.02); H10K 71/236 (2023.02); H10K 2102/311 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A foldable apparatus comprising a foldable substrate, the foldable substrate comprising:
a substrate thickness in a range from about 80 micrometers to about 5 millimeters defined between a first major surface and a second major surface opposite the first major surface, the foldable substrate comprising a glass-based material or a ceramic-based material;
a first portion comprising the substrate thickness between a first surface area of the first major surface and a second surface area of the second major surface;
a second portion comprising the substrate thickness between a third surface area of the first major surface and a fourth surface area of the second major surface;
a central portion comprising a central thickness less than the substrate thickness and in a range from about 20 micrometers to about 200 micrometers defined between a first central surface area and a second central surface area opposite the first central surface area, and the first central surface area recessed from the first major surface by a first distance and defining a first recess; and
a first polymer-based portion disposed in the first recess comprising a first contact surface facing the first central surface area and a second contact surface opposite the first contact surface, and an absolute value of a difference between a first refractive index of the foldable substrate and a second refractive index of the first polymer-based portion is about 0.1 or less,
wherein a first polymer angle defined as an internal angle between the first major surface of the foldable substrate and the second contact surface of the polymer-based portion is in a range from 179.2° to about 179.5°, and the second central surface area is recessed from the second major surface by a second distance and defines a second recess.