The invention provides an electrochromic display unit with high-quality display. The display unit comprises a transparent electrode (1), a display layer (2) which is formed on the transparent electrode (1) and which changes a color according to the amount of accumulated electrical charges, and an ion conductive layer (3) formed on the display layer (2). A plurality of picture electrodes (4) are formed on the ion conductive layer (3) on the side opposite to the display layer (2). The picture electrodes (4) are driven independently by, for example, a corresponding thin film transistors (6). In driving, by applying a drive current having given amount of electrical charges and then applying a certain amount of an inverted current, a certain amount of coloration is deducted, and extra coloration of the display layer (2) is eliminated.