A team of engineers at the University of Michigan has created an ultra high-definition display that can display a logo of the school that is just nine microns tall. In comparison, the pixels on the iPhone 4's 3.5-inch, 960x640 resolution display are eight times larger. It was made possible by Jay Guo, an associate professor in U of M's Department of Electrical Engineering and Computer Science, who developed a new color filter made of nano-level sheets of metal with precisely spaced gratings.
