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IF you REALLY WANT TO SOLVE THIS PROBLEM do what casio did for sports fans attending American footbll and baseball games -- they use a transparent back panel which can be propped up and viewed with a translucent white panel that is illuminated by sunlight behind the TFT matrix - it works in a pocket TV -- it hould work fine with any of the Thinkpad projection TV systems -- the TP with the detachable LCD screen -- or one of the overhead projector screens. This solves the main problems with reflected sunlight illumination and low power backlight vs TFT screens. > Nevertheless, why not a secondary backlight? Could be turned on >in bright conditions for maximum readibility in sunlight, off for max >battery life (or just a brighter main backlight for everything--turn it up >in the sun, down indoors). ThinkPads are generally considered to have >screens that are not as bright as their competition's.