Liquid crystal display device and manufacturing method thereof, and electronic device

One object of the present invention is to simplify the method of manufacturing a liquid crystal display device or the like. In the method of manufacturing a thin film transistor formed sequentially laminating a first conductive film, an insulating film, a semiconductor film, the second conductive film laminate impurity semiconductor film, the first conductive film is exposed by the first etching, and by a second etching the second conductive film pattern. Further, after forming the thin film transistor, a color filter layer so that the thin film transistor leads to reduce the unevenness; thus, the level of the surface of the pixel electrode layer is formed to reduce the difference.