To provide a liquid crystal panel employing a circuit layout that makes it possible to obtain a small size liquid crystal panel when the area a source driver occupies is large. A liquid crystal display device of the present invention comprises: a pixel portion including mn pixels (m and n are both natural numbers and satisfy the relation mn), the pixels each having a TFT; a gate driver for feeding n gate signal lines with selection signals; a source driver for feeding m source signal lines with video data; and a video data converter circuit, and is characterized in that the video data converter circuit converts first video data (h, k) (h=1m, k=1n) into second video data, and in that the video data (h, k) constituting the first video data is converted into {m(k-1)+h}-th video data that constitutes the second video data.