Abstract: The invention relates to the field of displays. One subject of the invention is a glass composition intended for the production of a substrate for a field-emission display, which has an overall light transmission factor under illuminant D65 (TLD65) that varies from 45 to 80% and is preferably equal to 72% or less, measured for a glass thickness of 2.8 mm, and a blue-gray coloration defined by the following chromatic coordinates: a*=?4 to +1, preferably ?2 to 0; and b*=?6 to +3, preferably ?2 to 0. The substrates obtained advantageously have a reflection brightness (R) of less than 10 Cd/m2.

Abstract: A silica-soda-lime glass composition suitable for making glazing. Said glass consists of 69-75 wt % SiO.sub.2, 0-3 wt % Al.sub.2 O.sub.3, 0-5 wt % B.sub.2 O.sub.3, 2-10 wt % CaO, 0-2 wt % MgO, 9-17 wt % Na.sub.2 O, 0-8 wt % K.sub.2 O, 0.2-4 wt % Fe.sub.2 O.sub.3 (total iron), and 0-0.45 wt % Se, CoO, Cr.sub.2 O.sub.3, NiO, CuO. The amount of tinting agents other than iron is at least 0.0002 wt % when the Fe.sub.2 O.sub.3 content is 1.5 wt % or less. The composition may also contain fluorine; zinc, zirconium, cerium and titanium oxides; and less than 4 wt % barium oxide; while the sum of the percentages of alkaline earth oxides is not above 10 wt %.