The present invention teaches an array substrate and a liquid crystal (LCD) panel including the array substrate. The array substrate contains a substrate, a number of scan lines, a number of data lines, and a number of common scan lines. The scan lines and the common scan lines are alternately interleaved with the data lines on the substrate so as to form a number of pixel units. Each pixel unit contains a main pixel unit and a sub pixel unit. The sub pixel units from two neighboring pixel units share a common scan line which drives the two sub pixel units simultaneously. As such, the number of common scan lines is reduced, thereby enhancing pixel aperture ratio.