What is an Electrophoretic Display?
An electrophoretic display is a type of low-power thin display that is considered a prime example of electronic paper, or e-paper. Electrophoretic displays are used in e-book devices such as the iLiad®, the Sony Reader®, the Cybook Gen3®, and Amazon Kindle®. The near-term goal in the display industry is to use electrophoretic displays to create e-paper that is thin, flexible, and easily visible even under glare. E-paper has long been promised by the display industry, but it has yet to take off in a big way. The long-term vision is to use e-paper to replace books and magazines. In the most common implementation of an electrophoretic display, millions of tiny titanium dioxide (titania) particles, each about a micrometer (a thousandth of a millimeter) in diameter are suspended in a carrier solution of hydrocarbons and black dye. These titania particles are covered with charging agents to give them an electric charge. After treatment of the particles, they are suspended in oil between two
