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Abstract
A reflective display device based on electrowetting technology exhibits high reflection index over 40% and contrast ratio over 15 (conventional paper has reflection index of 60% and contrast index of 15). In addition to the attractive optical properties, this technology manifests a fast video response rate (<10 ms) and colour conversion factor of 67% which is four times higher than standard electrophoretic displays. These factors show that electrowetting technology is a strong alternative to electrophoretic technique which enables reflective displays available to the e-reader market. This technology offers advantages of insensitivity to cell- gap variations and thus can be used to create electronic paper with excellent video capability at low cost. In this review we present the working principle, fabrication procedure and electro-optic response study of electrowetting display. Different challenges still to be overcome also have been discussed in detail.
