| 摘要 |
PURPOSE:To increase the driving speed of an EL matrix by driving the respective LE elements of the active thin film EL matrix for light emission and attenuating the emitted light after the stop of the driving within one scanning period. CONSTITUTION:When a time Td is elapsed after a latch signal is supplied, a driving stop signal is supplied to all one-bit circuits. In this case, a time (Tm+Td) is shorter than a scanning time Ts. Even an EL element which receives a driving signal for light emission is therefore stopped from emitting light within the scanning period. Then the driving is stopped for a time Tr up to the start of a next scan and a capacitor is charged. In general, data are written in a short time, so those three kinds of operation are properly synchronized to perform all of the writing of the light emission data, light emission driving, and its stop within the same scanning period.
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