An array substrate and a liquid crystal display panel are provided. The array substrate includes sub-pixel groups arranged in an array and each including first and second sub-pixels and a third switch assembly. The first sub-pixel includes a first main-zone electrode, a first sub-zone electrode, and a first switch assembly. The second sub-pixel includes a second main-zone electrode, a second sub-zone electrode, and a second switch assembly. The second switch assembly controls conduction of the second main-zone electrode and the second sub-zone electrode. The third switch assembly is connected to the first and second sub-zone electrodes and controls connection and conduction between the first and second sub-zone electrodes to reduce voltages of the first and second sub-zone electrodes. The array substrate helps reduce the number of switch units involved, simplifies the structure of pixels, lowers down fabrication cost, and also increases an aperture ratio of the liquid crystal display panel.