Abstract: The present disclosure provides an array substrate, a display panel, and a display device. The array substrate includes a substrate, pixel units arranged in rows and columns on the substrate, and data lines between at least some columns of pixel units. Two columns of pixel units are disposed between two adjacent data lines. Each of the pixel units includes a first electrode including a planar electrode and a second electrode including a slit electrode having at least one slit, sequentially disposed on the substrate. The slit electrode of each of the pixel units has a first side proximal to a data line nearest to the slit electrode and a second side distal to the data line nearest to the slit electrode, opposite to each other in a row direction. The slit electrode of at least one of the pixel units includes at least one opening on the first side.