A pixel array including first signal lines, second signal lines, active elements, pixel electrodes and selection lines is provided. The second signal lines and the selection lines are intersected with the first signal lines respectively. Each first signal line has a bridge point at an intersection with the one of the selection lines. At least one of the selection lines is disposed between two neighboring second signal lines. Amounts of the first signal lines and the selection lines are larger than an amount of the second signal lines respectively, and an amount of second signal lines intersected with a connection line between the bridge point of the ith first signal line and the bridge point of the (i+1)th first signal line is one, i=1 to N, and N is the amount of the first signal lines.