An electro-optical apparatus includes a first and second data lines that intersect with scanning lines. A first and second pixel electrodes are positioned at opposite sides of the corresponding scanning line. A first signal electrode is formed on the electrode forming surface at a position adjacent to the first pixel electrode and is connected to the first data line. A second signal electrode is formed on the electrode forming surface at a position adjacent to the second pixel electrode and is connected to the second data line. The second signal electrode includes an interline electrode portion formed in a gap between the second pixel electrode and the first pixel electrode positioned at the second side with respect to the second pixel electrode.