I’ve been waiting for laptops (and other devices) to replace their screens with projectors for years now. Coming Soon, to Any Flat Surface Near You:
Pint-size digital projectors are in the works. These devices, when plugged into cellphones and portable media players, will let consumers beam video content from their hand-held devices to the closest smooth surface — entertaining themselves, annoying their neighbors and possibly contributing to a new warning sign: No Projectors in This Area. The microprojectors, still in prototype, use light-emitting diodes, lasers or a combination of the two to cast a display of up to 50 or 60 inches, or perhaps even wider, in darkened spaces and 7 to 20 inches or so when there is ambient light.