Patent ID: 11908617
Assignee: 3D GLASS SOLUTIONS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 16:
17. The method of claim 15, wherein the step of forming the first vias and the step of forming the second vias from the first to the second side each comprises:
forming a photoresist with a via pattern on the substrate;
exposing at least one portion of the photosensitive glass substrate to an activating energy source;
heating the photosensitive glass substrate a first time for at least ten minutes above a glass transition temperature thereof;
cooling the photosensitive glass substrate a first time to transform at least part of the exposed glass to a crystalline material to form a glass-crystalline substrate;
etching the first or second vias, respectively, with an etchant;
flood exposing a region outside of the etched first or second vias respectively, of the photosensitive glass substrate to the activating energy source;
heating the photosensitive glass substrate a second time for at least ten minutes above the glass transition temperature thereof;
cooling the photosensitive glass substrate a second time to transform the exposed glass to a crystalline material to form a glass-crystalline substrate; and
selectively filling the first and second vias with a conductive material.