Screen Contrast
You may not plan on taking your tablet out into bright sunlight and curling up with a good e-book in a lawn chair or hammock; but even if you stay indoors, you'll still likely run into glare from windows, which can render a low-contrast display totally unreadable.
When you buy a traditional e-reader like the Amazon Kindle, it has an amazing high contrast display using a technology called E Ink. The problem is that E Ink doesn't do well with color, has a slow refresh rate, and isn't backlit—so it's pretty limited.
Pixel Qi (pronounced “Pixel Chee”) is a company that makes a special form of LCD screen that can display either with or without a backlight. This not only saves battery life, but it means you can still check your email ...
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