A pixel array including a plurality of scan lines, a plurality of data lines, and a plurality of sub-pixel is provided. Each of the 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, wherein 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 a signal output terminal of the second switch. The first pixel electrode has a first aperture above the signal output terminal. The third switch is electrically connected to the (n+1)th scan line and the second pixel electrode, and the second pixel electrode has a second aperture above a floating terminal of the third switch.