"Luminance, parallax?occlusion and parallax older phones, overscanning, edge data, Screen sizes-ranges in devices /Display Resolution/Optical Resolution/ -- Auto-adjusting (or not!) for distance from user... Also viewing angles, glare, etc.
LED, TFT, CRT, C.I.E, E-Ink - Real quick, more about categories... ??? More about how to make the on-screen stuff work with a piece of hardware, but you have to know it!
http://www.useit.com/alertbox/mobile-usability.html"
mention types of screen display tech.with key attributes, top level, not too detailed - consider book audience