METHOD FOR EVALUATING LUMINANCE NONUNIFORMITY OF DISPLAY GLASS SUBSTRATE, METHOD FOR MANUFACTURING DISPLAY GLASS SUBSTRATE, AND DISPLAY GLASS SUBSTRATE WHEREIN LUMINANCE NONUNIFORMITY IS NOT EASILY GENERATED

摘要

In a method for evaluating luminance nonuniformity of a display glass substrate, a display glass substrate (4) is inserted between a first polarization plate (2) arranged in a direction where light is irradiated from a light source (1), and a second polarization plate (3) arranged to orthogonally intersect with the polarization axis of the first polarization plate (2).  Then, light transmitted through the first polarization plate (2), the display glass substrate (4), and the second polarization plate (3) from the light source (1) is detected, and luminance nonuniformity is evaluated.  The display glass substrate (4) is brought into contact with the first polarization plate (2) and the second polarization plate (3) on the surface.