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Canon farewells SED TV hopes

angry tapir (1463043) writes | more than 3 years ago

Displays 0

angry tapir writes "Canon has decided to liquidate a subsidiary developing a flat-panel display technology called SED, effectively bringing to an end once high hopes that the screens would replace LCD panels and plasma displays in living room TVs.Development of SED (surface-condition electron-emitter display) screens began in 1986 at Canon and was joined in 1999 by Toshiba. SEDs combine elements of both CRT (cathode ray tube) and LCD (liquid crystal display) technologies. As with CRTs, electrons hit a phosphor-coated screen to emit light. But instead of being shot from an electron gun, electrons are drawn out of an emitter through a slit that is only a few nanometers wide. The result is a picture that is as bright as a CRT and does not suffer a time lag sometimes seen on LCD panels with rapidly moving images."
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