A liquid crystal display panel including an active device array substrate, an opposite substrate, and a liquid crystal layer is provided. The active device array substrate has at least one pixel unit including two active devices, two first pixel electrodes, and two common lines. Each of the active devices has a gate, a source, and a drain. The gates are connected with one another, the sources are connected with one another, and the pixel electrodes are connected with the drains. A first signal source connected with one of the common lines is different from a second signal source connected with the other one of the common lines. The opposite substrate has a common electrode connected with the first signal source. The liquid crystal layer is disposed between the active device array substrate and the opposite substrate.