For keeping copyright, a copyright evaluation is to verify an illegal modification between the original product and the suspected product. On comparing two products, a copyright association take an estimation to the original product and illegal product. The evaluation experts have to compare both products based on the request list from the copyright association. Then after it is excluded from the comparison item as detail to seeking objective result. These detailed comparison item should be a serious concentration cause it has a sensitivity for the decision. In this paper, it was analyzed and illustrated the detailed item as for display device evaluation materials.