GLASS SUBSTRATES WITH STRATEGICALLY IMPRINTED B-SIDE FEATURES AND METHODS FOR MANUFACTURING THE SAME

摘要

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.