A pixel array including a plurality of scan lines, a plurality of data lines, and a plurality of sub-pixels is provided. Each sub-pixel is electrically connected to one of the scan lines and one of the data lines correspondingly. Each sub-pixel arranged in the nth row includes a first switch, a second switch, a first pixel electrode, a second pixel electrode and a third switch. The first switch and the second switch are electrically connected to the nth scan line and the mth data line. The first pixel electrode is electrically connected to the first switch. The second pixel electrode is electrically connected to the second switch and has an opening for accommodating the first pixel electrode. In each sub-pixel, the first pixel electrode is surrounded by the second pixel electrode. In addition, the third switch is electrically connected to the (n+1)th scan line and the second pixel electrode.