Abstract
A novel liquid crystal display (LCD) driving concept for light shutters is presented, based on the driving signal polarity reversal controlled by the driving voltage integral across the LCD switching element electrodes, as opposed to plain periodic polarity reversal. This driving scheme optimizes the DC driving signal voltage balancing and guarantees compensation of the long-term (DC) component of the driving voltage within one polarity reversal cycle, irrespectively of driving voltage amplitude variations. The possibility of using longer times for the driving signals polarity reversals reduces the LCD switching elements power consumption (∼1 μA) compared to standard driving techniques (∼100 μA), which is important for portable devices such as welding light shutters.
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