The invention provides a pixel array, a liquid crystal display panel and a photo-electric device. The pixel array comprises a plurality of first scanning lines, a plurality of second scanning lines, a plurality of data wires and a plurality of sub-pixels. Each sub-pixel comprises a first switching element, a second switching element, a fist pixel electrode, a second pixel electrode, a third switching element and a plurality of common lines connected with one another, wherein the first switching element and the second switching element are electrically connected with a same first scanning lineand a same data wire, the first pixel electrode is electrically connected with the first switching element, the second pixel electrode is electrically connected with the second switching element, thefirst scanning lines are positioned between the first pixel electrode and the second pixel electrode, and the common lines are distributed below the first pixel electrode and the second pixel electrode. Besides, the third switching element is electrically connected with the second scanning lines and the first pixel electrode, and the third switching element is provided with an electric levitationend.