| 摘要 |
In a D/I conversion section (210, 210a-210d) of the semiconductor device for driving a light emission display device, a precharge circuit (250, 250a) is provided at the rear of each 1-output D/I conversion section (230, 230a-230c). A precharge signal PC is input into the precharge circuit (250, 250a). The D/I conversion section has two output blocks internally thereof, and a role for storing and outputting current is changed every frame to enable securing a period for driving a pixel longer. Further, at the time of driving, in the precharge circuit (250, 250a), current driving is carried out after a voltage corresponding to output current has been applied to the pixel, and therefore, the pixel can be driven at high speed. Thereby, output current of high accuracy can be supplied to digital image data to be input, and even where an output current value is low, the current load device can be driven at high speed. |
