An electro-optical apparatus including a display module and a touch panel is provided. The display module includes a body, at least a first positioning element, and at least a second positioning element. The body has a display surface and a bottom surface opposite to the display surface. The first positioning element and the second positioning element are connected to the body. The first positioning element is disposed on a first side of the body and the second positioning element is disposed on a second side of the body that is adjacent to the first side. The first positioning element and the second positioning element protrude from the display surface in a direction away from the bottom surface. The touch panel is disposed on the display surface of the body, and edges of the touch panel abut against the first positioning element and the second positioning element.