New Screens Make Better Blues

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According to a report in New Scientist researchers at the Swiss Federal Institute of Technology have developed a new polymer screen technology that can generate the full spectrum of colours in visible white light.

Existing display technologies cannot produce every colour that the human eye can perceive becase they are based on mixing varying intensities of fixed red, green and blue coloured light, and even the best screen have difficulty in reproducing a wide range of blues.

The new display technology, still at the prototype stage, uses microscopic ridged pixels, coated in a thin gold film and positioned behind a diffraction grating. When exposed to an electric charge the pixels expand and contract so when a while light source is shone on the pixels the change in size varies the wavelength and hence the colour of the light reflected from its surface.

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