1. A display control circuit that generates write gray scale data to be provided to a display device, based on an image signal including left-eye gray scale data and right-eye gray scale data, the display device displaying a 3D image by alternately displaying a left-eye image and a right-eye image, the display control circuit comprising: a gray scale correction circuit that corrects the image signal such that an average gray scale value of each of groups is not changed between before and after the correction, each group including a predetermined number of pixels adjacent to each other, and the pixels having a same gray scale value indicated by the left-eye gray scale data and having a same gray scale value indicated by the right-eye gray scale data; and an overshoot drive circuit that generates the write gray scale data by performing correction on the image signal corrected by the gray scale correction circuit, to emphasize a temporal change of the signal, wherein the gray scale correction circuit divides the predetermined number of pixels included in each group into a first pixel group and a second pixel group, and corrects the image signal such that a post-correction gray scale value for the left-eye gray scale data and a post-correction gray scale value for the right-eye gray scale data are equal to each other for at least the first pixel group.