Hitachi plans to begin selling a color-capable electronic paper in 2006.
Rather than use organic light-emitting (OLED) diodes, the way that Philips’ e-paper does, Hitachi’s device will use a liquid crystal displays (LCD) 3-centimeters thick and equipped with a special panel that has doubles the noral light reflectivity of LCDs. Hitachi showed a 7-inch prototype, said the device is capable of showing an image bright enough for easy viewing without using a backlight, and can display a high-resolution image for several months on commercially available lithium ion battery cells. Unlike Philips e-paper, the Hitachi device can’t display video.
Nor can it be rolled up or bent. So, Hitachi believes its market for this e-paper will be used in shopping malls and trains for posters and ads, as well as at public facilities, offices and homes for information and message boards. Those are also the markets that currently use E -Ink’s black & white, lower resultion electronic paper.