A source driving integrated circuit is provided. The source driving integrated circuit includes a source driver area, an electrostatic discharge (ESD) circuit area and a fan-out area. The source driver area includes a plurality of source driver units. The ESD circuit area includes a plurality of ESD units. The fan-out area includes conduction lines for electrically connecting respective ones of the source driver units of the source driver area to ones of the plurality of the ESD units of the ESD circuit area. In a horizontal structure of a semiconductor integrated circuit, the fan-out area at least partially overlaps the ESD circuit area.