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Canon develops cheaper colour LCD

Uses only two filters, 30% less power usage than standard
Mon May 24 2004, 11:58
CANON HAS DEVELOPED a colour LCD, which uses alternative filters to run on 30% less power than regular LCD panels - and 50-60% less power than plasma display panels, according to a report on

Normal LCD screens need to combine red, green and blue filters in order to create other colours, but Canon's technology needs only two filters: green and magenta, the wire said. Colour filters are the main cause of light loss in LCD screens, so losing one filter means power savings.

Canon says that this will limit the colours, so screens using the tech will be used mainly for mobile phones, PDAs and toys. But it is aiming to up the colour capabilities of the tech to LCD TV standard.

Canon does not produce LCDs commercially, so, according to, it will team up with a domestic LCD maker to commercialise the technology. But it could be two to three years before we all see the benefits. µ


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