Display driving circuit and a display device

The invention provides a display drive circuit and a display device, which restrains gradation astringency reduction of a second gradation voltage which is supplied to a source circuit without a plurality of gradation voltage generating circuits on condition that the long side of a display driver IC increases or a plurality of display drivers IC are arranged. The display device is provided with a display drive circuit which can drive a plurality of source ammplifiers of source lines of a connected display panel. The display drive circuit is provided with the components of a plurality of preamplifiers which output a plurality of gradation voltages; a plurality of source circuits which respectively comprise a plurality of source amplifiers that are divided into a plurality of parts; and a plurality of resistance arrays which are provided corresponding to the plurality of source circuits respectively, wherein the plurality of resistance arrays are operable to divide the first gradation voltages input thereto to generate second gradation voltages, and supply the second gradation voltages to corresponding source circuits.