US 12,426,184 B2
Foldable apparatus, ribbons, and methods of making
Naigeng Chen, San Jose, CA (US); Matthew Wade Fenton, Elmira, NY (US); Timothy Michael Gross, Painted Post, NY (US); Yuhui Jin, Painted Post, NY (US); Dhananjay Joshi, Painted Post, NY (US); Kuan-Ting Kuo, Chubei (TW); and Yousef Kayed Qaroush, Painted Post, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Appl. No. 17/637,929
Filed by CORNING INCORPORATED, Corning, NY (US)
PCT Filed Aug. 28, 2020, PCT No. PCT/US2020/048469
§ 371(c)(1), (2) Date Feb. 24, 2022,
PCT Pub. No. WO2021/041857, PCT Pub. Date Mar. 4, 2021.
Claims priority of provisional application 62/914,720, filed on Oct. 14, 2019.
Claims priority of provisional application 62/893,306, filed on Aug. 29, 2019.
Prior Publication US 2022/0287195 A1, Sep. 8, 2022
Int. Cl. H05K 5/03 (2006.01); B32B 3/26 (2006.01); B32B 7/06 (2019.01); B32B 7/12 (2006.01); B32B 17/06 (2006.01); H04M 1/02 (2006.01); H05K 5/00 (2025.01)
CPC H05K 5/03 (2013.01) [B32B 3/263 (2013.01); B32B 7/06 (2013.01); B32B 7/12 (2013.01); B32B 17/06 (2013.01); H04M 1/0268 (2013.01); H05K 5/0017 (2013.01); B32B 2307/732 (2013.01); B32B 2457/20 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A ribbon comprising:
a ribbon thickness defined between a first major surface and a second major surface opposite the first major surface;
a first portion comprising a first depth of layer from the first major surface from 0% to about 5% of the ribbon thickness and a second depth of layer from the second major surface from 0% to about 5% of the ribbon thickness;
a second portion comprising a third depth of layer from the first major surface from 0% to about 5% of the ribbon thickness and a fourth depth of layer from the second major surface from 0% to about 5% of the ribbon thickness; and
a central portion comprising a first central depth of layer from the first major surface of about 10% or more of the ribbon thickness, a first central compressive stress region extending to a first central depth of compression from the first major surface, a second central depth of layer from the second major surface of about 10% or more of the ribbon thickness, and a second central compressive stress region extending to a second central depth of compression from the second major surface,
wherein the central portion is positioned between the first portion and the second portion in a direction of a length of the ribbon,
wherein the ribbon exhibits a warp relative to a first plane defined by the first major surface in a range from about 10 nanometers to about 2 micrometers.