| 摘要 |
PURPOSE: A thin film micro-mirror array driving circuit is provided to stabilize overall system by supplying stabilized current to each actuator. CONSTITUTION: A driving circuit comprises a plurality of pixel driving blocks(210/1-210/n). The pixel driving block further comprises a sample/holder(212) for sampling and storing an analog unit pixel value; a comparator(214) for comparing the sampled unit pixel value and a pulse width modulation signal synchronized with a horizontal synchronizing signal, and generating a switch control signal for supplying a constant current to the corresponding actuator, starting from a cross point between the unit pixel value and the pulse width modulation signal; a constant current source(216) for generating the static current; and a switching block(218) for supplying the static current generated from the static current source to the actuator of the corresponding unit pixel during a pulse width modulation section lower than the unit pixel value, in response to the switch control signal generated from the comparator.
|
