Method and apparatus for edge finishing of high mechanical strength thin glass substrates
CORNING INCORPORATED
Processes and devices by which a brittle material substrate may be edge formed and finished to simultaneously remove corresponding damage remaining on the edges in the areas formed by cutting and separation while imposing a desired edge profile and achieving a desired mechanical edge strength. Processes of the present disclosure may include a chemical and mechanical brush polishing process configured to shape and/or polish a surface of one or more thin substrates. A plurality of substrates may be arranged in a stacked configuration, and engineered interposer devices may be arranged between the stacked substrates. The interposers may provide between the substrates and may direct filament placement during brushing so as to guide material removal on the substrate edges. Substrate edge profile shapes, including symmetric and asymmetric profiles, may be formed by strategic manipulation of…
1ClaimsFirst of 11
- 1
A substrate with a polished edge, the substrate comprising:
- a mechanical edge strength of at least 700 MPa;
- and edge flaws of not more than 2 microns in size, wherein the polished edge comprises a plurality of brush marks arranged thereon in a substantially parallel configuration, the brush marks imparted by a brush polishing process.
2Description
The background description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventor, to the extent it is described in this background section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present…