| 主权项 |
1. A liquid-crystal display device comprising:
a pixel electrode provided for each pixel; a common electrode for supplying a common potential to the pixel; a liquid crystal layer arranged between the pixel electrode and the common electrode; a driving circuit unit for supplying a pixel potential to the pixel electrode so that that a driving voltage is applied between the common electrode and the pixel electrode; a status detection unit that detects a response speed of the liquid crystal layer; and a control unit that controls a gradation of the pixel by controlling the driving voltage, the control unit switches between a first gradation control mode and a second gradation control mode based on a detection result from the status detection unit, the first gradation control mode is selected when the response speed of the liquid crystal layer is higher than a predetermined speed, the second gradation control mode is selected when the response speed of the liquid crystal layer is not higher than the predetermined speed in the first gradation control mode, a predetermined number of voltage values of the driving voltage from a minimum voltage value to a maximum voltage value are prepared, and the predetermined number of voltage values are associated with a plurality of gradation values from a minimum gradation value to a maximum gradation value, in the second gradation control mode, a plurality of voltage values from the minimum voltage value to a predetermined voltage value among the predetermined number of voltage values are associated with a plurality of gradation values from a minimum gradation value to a maximum gradation value, whose number is smaller than that in the first gradation control mode, and a plurality of voltage values from the predetermined voltage value to the maximum voltage value among the predetermined number of voltage values are set as voltage values for overdrive for applying a voltage value that is higher than the driving voltage of the voltage value associated with the gradation value. |
