With the rapid development of display-related technologies, consumers and manufacturers need an objective measure for numerically rating the relative qualities among different displays. However, existing evaluation measures are unable to satisfy this need, as the results are invariably dissimilar to the results of subjective evaluations as regards display quality. Thus, this study proposes a framework for numerically evaluating the relative qualities among displays based on an analytic network process. To prove the effectiveness of the proposed framework, an experiment is conducted with three different mobile displays, and the results of the proposed framework are compared with those from a subjective evaluation. The relationship between the two sets of data is found to be extremely linear through a correlation coefficient. The authors can confirm that the proposed framework is a good comparative display image quality evaluator.