What does a dead pixel look like – and can it be fixed?

Of all the things that could go wrong with a computer monitor or TV, a dead pixel or two is probably the most annoying ...
Yahoo

Retina Display Explained: How Apple Perfected Screen Clarity With Unseen Pixels

Retina Display is the name for the high-resolution screen technology Apple uses on various models of the iPhone, iPad, and other Apple products. It was introduced with the iPhone 4 in June 2010. Read ...