US 12,421,167 B2
Substrate made of glass and method for the production thereof
Roman Ostholt, Langenhagen (DE); Norbert Ambrosius, Garbsen (DE); Daniel Dunker, Hannover (DE); Aaron Michael Vogt, Hannover (DE); and Sergej Schneider, Hannover (DE)
Assigned to LPKF LASER & ELECTRONICS SE, Garbsen (DE)
Appl. No. 18/007,050
Filed by LPKF Laser & Electronics SE, Garbsen (DE)
PCT Filed May 20, 2021, PCT No. PCT/EP2021/063533
§ 371(c)(1), (2) Date Jan. 27, 2023,
PCT Pub. No. WO2022/022873, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 10 2020 119 929.5 (DE), filed on Jul. 28, 2020.
Prior Publication US 2023/0278917 A1, Sep. 7, 2023
Int. Cl. C03C 23/00 (2006.01); C03C 15/00 (2006.01); C03C 17/32 (2006.01)
CPC C03C 23/0025 (2013.01) [C03C 15/00 (2013.01); C03C 17/32 (2013.01); C03C 2218/31 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A substrate made of glass, the substrate comprising:
an essentially dimensionally stable portion;
at least one flexible portion; and
at least one recess that is on one side or does not penetrate the substrate, and that is disposed in an outer surface of the substrate, so as to reduce a material thickness of the substrate in the at least one flexible portion relative to an adjacent portion, the at least one recess being formed by a plurality of contiguous concave depressions that are defined by microstructures, a course of which determines a remaining material thickness of the substrate in the at least one flexible portion,
wherein the depressions extend at least in portions into an area having a thickness parallel to the outer surface which on bending the substrate encloses a plane of a neutral axis between an extension zone and a compression zone of the substrate.