Two-Dimensional Visual Resolution Limits for Matrix Display Devices

Abstract

The visual resolution limlts of three types of color pixel arrangements for matrix display devices were discussed. First, spatial Nyquist limits based on pixel inverse lattices wre introduced for all arrangements. Then, showing still and moving sinusoidal patterns on simulated screens, two subjective measures were taken, and two-dimensional visual resolution limit factors, corresponding to the Kell factor, were obtained quantitatively. For still patterns, the factors were of about 0.6〜0.7 with black & white patterns, about 0.5〜0.6 with single color patterns. The comprehensive evaluation showed that the triangle arrangement was the best in the tested arrangements. For moving patterns, at an optimum velocity, the visual resolution limits were usually improved at most about 10%〜20% in comparsion with those of still patterns, and the relations among the quality, the velocity and the pixel arrangement were summarized.