Abstract: A pixel unit array is provide. The pixel unit array comprises a plurality of pixel units including a plurality of first pixel units and a plurality of second pixel units alternately arranged in a pixel direction. Each pixel unit comprises a first electrode, a second electrode and an insulating layer between the first electrode and the second electrode. The second electrode further includes a first part and a second part connected to the first part. The first part includes an N number of first stripe-shaped electrodes, and the second part includes an M number of second stripe-shaped electrodes. The first part in the second electrode has a width of a1, the second part in the second electrode has a width of a2, and a1<a2.