Why are e-books in Black-and-white screens?

Q: Why are e-books in Black-and-white screens?

A: E-book reader also known as the electronic paper book, its screen is called E-ink ink screen, is currently a number of mainstream readers of the unanimous choice, but there are still many products using color E-ink display. When the manufacturer launches the reader product, chooses the ink screen the main to have the user experience and the cost and so on several aspects consideration.

User experience, Ink screen user experience is considered the closest to the paper books, in order to maximize the electronic handheld devices to restore the paper book reading experience, ink screen to become the manufacturer's choice. At the same time, the ink screen itself does not glow, low power consumption, the same battery capacity in the case of longer than the color, and there is no visual angle of the problem. Cost, ink screen material price is much lower than color display, if the E-book reader with color display, material costs will be attached to the product retail price, eventually passed on to consumers. At the same time, the line between a reader with a color display and a tablet computer becomes blurred.