| 摘要 |
PROBLEM TO BE SOLVED: To reduce an uneven display due to a dull current waveform which is caused by stray capacitance of a source signal line, related to an active matrix type display device of current driving. SOLUTION: A voltage source 18 as well as a current source 10 for controlling gradation are prepared to make the electric charge accumulated in the stray capacitance quickly correspond to display gradation. Using a source switching means 19 which switches between two power sources inputted in a source signal line, the electric charge of stray capacitance is instantaneously changed by the voltage source 18 at the start of row selecting period, and then gradation is displayed by the current source 10 for desired luminance. |
