COOL-running LCD TVs are fast overtaking power-hungry plasma screens and cathode ray tubes. One of the drawbacks of LCD screens is that colours look washed out and muddy when viewed from the side, but in April, Sony and Samsung will begin selling screens that solve this problem.
In LCD screens, image cells are switched off to block light, on to let light through, or in-between to make shades of red, green and blue. Colours look fine from the front, but from the side, diffraction and absorption can change the balance between them.
The new screens get rid of these part-way…
