1. A display evaluation method for evaluating a motion image quality of a display on the basis of scroll of a measurement pattern displayed on the display, the method comprising steps of: (a) scrolling the measurement pattern on the display, then capturing an image of the measurement pattern by making a visual field of an image sensor follow the scroll of the measurement pattern, and determining a motion picture response curve MPRC as a function of time on the basis of the captured image; (b) transforming the motion picture response curve MPRC(t) into an MTF (modulation transfer function); (c) determining a normalized spatial frequency value N_Sf(a %) at which an MTF value starts declining by a predetermined percentage a % from a highest luminance portion of the MTF, the normalized spatial frequency value N_Sf(a %) involving a movement viewing angular speed Vθ of the measurement pattern; and (d) evaluating the motion image quality of the display on the basis of the normalized spatial frequency value N_Sf(a %).