A pixel array includes pixel rows. Each pixel row includes a first gate line, a second gate line, sub-pixels and data lines. Each data line includes a main portion, a branch portion and a connecting portion. The main portions of the data lines are arranged along a second direction in sequence. The branch portions and the main portions of the data lines are arranged alternately along the second direction in sequence, and each sub-pixel is disposed between any two of the adjoining main portion and branch portion. The connecting portion of each of the data lines is disposed between the first gate line and the second gate line, the connecting portion of each data line is electrically connected with the main portion and the branch portion of each data line, and the connecting portion of each data line penetrates through the corresponding sub-pixel along the second direction.