Sharp Quattron TV's yellow pixels fail to impressSharp 40LE821 LED TV at the Which? test lab

02 August 2010

Sharp Quattron LC46LE821

A yellow pixel revolution? The Sharp Quattron LED TV

Sharp's new Quattron LED TVs promise a unique new feature - extra yellow pixels alongside the standard RGB mix. Quattron delivers '1,000 times more colour than any other television' according to Sharp's claims - but Which? experts were less than impressed when they took a first look in the test lab.

Quattron adds yellow pixels

RGB, on the boxes and backs of many TVs, stands for red, green and blue, and indicates the conventional three columns of pixels found in a TV’s panel. 

The Quattron series of TVs features extra yellow pixels which Sharp claims will improve the screen’s picture quality.

Using a magnifying glass it’s possible to see the yellow pixel, but this isn’t how TVs are viewed, and Which? wanted to see if this introduction of the yellow pixel noticeably changed the picture quality.

Quattron LED TV picture quality

Which? testers found that the Quattron technology did indeed have an effect on picture quality, but unfortunately not in a positive way. 

The first impressions over a Scart connection were not favourable. Which? researcher Ben Stevens said, 'The yellows looked distinctly ochre-tinted, giving them a slightly brownish look. The blues also appeared too emphasised, making them look over-saturated and a little darker than they should be. The greens looked slightly yellowy, too, and the overall impression was of poorly balanced colour.'

When compared to a benchmark TV, Stevens said the colour issues became even more apparent, and when the Sharp was switched to some sport on Freeview, 'the grass appeared more yellow than it should have and we had the same results over HDMI.'

What this would mean to a regular viewer is that skin tones, in particular, would appear redder or browner than they should. Picture adjustments can be made on any TV, but the effects visible on this Sharp were quite tricky to counteract.

Quattron video review

To find out more about how this TV fared in our First Look lab test check out the Sharp Quattron video review and keep an eye out for our full review due on the 7th of August. There will also be full test results for over a dozen more new LED, LCD and plasma TVs online from this Saturday. Check our TV reviews page for all the latest Best Buy information.

Related links

Sharp TV brand overview

Buying a new TV

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