Invention Grant
- Patent Title: Glass substrates with strategically imprinted B-side features and methods for manufacturing the same
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Application No.: US13218932Application Date: 2011-08-26
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Publication No.: US09676649B2Publication Date: 2017-06-13
- Inventor: Michael Sean Dobbins , James Robert Lim , Hung Cheng (Henry) Lu , Wanda Janina Walczak , Liming Wang , Ruchirej Yongsunthon
- Applicant: Michael Sean Dobbins , James Robert Lim , Hung Cheng (Henry) Lu , Wanda Janina Walczak , Liming Wang , Ruchirej Yongsunthon
- Applicant Address: US NY Corning
- Assignee: Corning Incorporated
- Current Assignee: Corning Incorporated
- Current Assignee Address: US NY Corning
- Agent Thomas R. Beall; Matthew J. Mason; Jeffrey A. Schmidt
- Main IPC: B32B3/30
- IPC: B32B3/30 ; C03B17/06 ; C03B23/02 ; C03C19/00 ; H01L29/786 ; G02F1/1333

Abstract:
Glass substrates and methods for forming glass substrates are disclosed. The glass substrates include a planar A-side surface having a surface roughness Ra1 of less than 0.5 nm and a planar B-side having a surface roughness Ra2 wherein the ratio Ra2:Ra1 is greater than or equal to about 1.5. A plurality of texturing features are formed in the B-side surface. The plurality of texturing features have a peak-to-valley height H such that 0.05 μm≦H≦3.75 μm. The texturing features are distributed in the B-side surface such that a center-to-center pitch P between adjacent texturing features is at least 1.5 mm in at least one direction. The plurality of texturing features are formed in the B-side surface while the glass substrate is at a temperature T1, wherein 600° C.≦T1≦1200° C. and a viscosity of the glass substrate is from greater than 150,000 Poise and less than 1013 Poise.
Public/Granted literature
- US20130052414A1 GLASS SUBSTRATES WITH STRATEGICALLY IMPRINTED B-SIDE FEATURES AND METHODS FOR MANUFACTURING THE SAME Public/Granted day:2013-02-28
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