An electrooptic device includes: a display panel; an illuminating unit that emits light onto the display panel; an ambient-light measuring unit that measures the illuminance of ambient light; a luminance control unit including a light control profile for obtaining the optimum surface luminance of the display panel, the luminance control unit obtaining the optimum surface luminance on the basis of the measured illuminance of the ambient light using the light control profile, and controlling the luminance of the light to be emitted from the illuminating unit to provide the display panel with the optimum surface luminance; a display-mode switching unit that switches the display panel to a transmission display mode when the illuminance of the ambient light measured by the ambient-light measuring unit is lower than a predetermined illuminance, and switches the display panel to a reflection display mode when the illuminance of the ambient light is higher than the predetermined illuminance; and a storage unit that stores a gamma value for the transmission display for the transmission display mode and a gamma value for the reflection display for the reflection display mode as a plurality of tables. When the display panel is switched to the transmission display mode by the display-mode switching unit, the gamma value for the transmission display is obtained from the plurality of tables stored in the storage unit, and the gamma value for the transmission display is applied. When the display panel is switched to the reflection display mode by the display-mode switching unit, the gamma value for the reflection display is obtained from the plurality of tables stored in the storage unit, and the gamma value for the reflection display is applied.