A liquid crystal display device is provided, which includes a transistor including an oxide semiconductor layer, a resin layer, a first electrode layer, a second electrode layer having an opening, and a liquid crystal layer. One of the first electrode layer and the second electrode layer is a pixel electrode layer which is electrically connected to the transistor, and the other of the first electrode layer and the second electrode layer is a common electrode layer. The liquid crystal display device is configured to display an image by a lateral electric field mode.