The present invention discloses an array substrate and liquid crystal display panel, wherein in the array substrate, each pixel unit includes a first pixel electrode, a second pixel electrode and a third pixel electrode; and each pixel unit includes a first control circuit and a second control circuit; the first control circuit affects first pixel electrode to make first pixel electrode in a state corresponding to displaying a black image in 3D display mode; the second control circuit affects second pixel electrode to change the voltage of second pixel electrode. As such, the present invention can reduce color difference at large viewing angle, improve opening ratio in 2D mode, reduce signal cross-talk in 3D mode, and reduce the number of data line drivers to reduce the cost.