The disclosure provides a display device includes a first display panel, a second display panel, and a backlight module. The first display panel is a liquid crystal display panel, configured for regionalized brightness adjustment and includes first pixel units; a data line electrically connected to one first pixel unit and extending along a direction; a source connected to the data line; and a drain. The source forms a notch, and the drain is corresponding to the notch. The second display panel is a liquid crystal display panel, disposed above the first display panel and includes second pixel units. Each second pixel unit includes at least one sub-pixel that includes a color filter layer. The first display panel is located between the second display panel and the backlight module. Each first pixel unit is disposed corresponding to N second pixel units, wherein N is an integer satisfying 0