Electrohyphen;optical performance of a new, blackhyphen;white and highly multiplexable liquid crystal display

摘要

A new, low bias tilt fieldhyphen;effect liquid crystal display (LCD) is presented with better image quality than supertwist or superbirefringence LCDrsquo;s at the same high level of multiplexing. In its positive contrast mode, the display image is black on white with virtually no inherent coloration and with a comparably large contrast as that of twisted nematic LCDrsquo;s. The viewing range of the display is as wide as that of superbirefringence LCDrsquo;s, whereas its image quality is an order of magnitude less dependent on cell gap variations. With specifically designed liquid crystal mixtures, multiplexing ratios of 1000:1 and response times below 300 ms result.