The present disclosure provides a display panel and a liquid crystal display device. The display panel includes an array substrate and a flexible thin film. The array substrate has a first surface, a second surface disposed opposite to and in parallel with the first surface, and a first side surface connected to the first surface and the second surface. The first surface of the array substrate is on a same side as a light-emitting surface of the array substrate, and the flexible thin film is disposed on a side of the second surface of the array substrate. The display panel and the liquid crystal display device have narrow frames.