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Sony details its ultra-bright WhiteMagic display tech to make us salivate over the Xperia P

Posted: , by Daniel P.

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Sony details its ultra-bright WhiteMagic display tech to make us salivate over the Xperia P
We wrote about Sony's upcoming WhiteMagic display tech when it was fresh out of the lab last year, and the screen geeks that we are, immediately envisioned it slapped on a phone display.

Brightness, together with screen reflectance ratio, are the two variables on which outdoor visibility depends, and together with battery life are the areas where today's smartphones and tablets are lacking the most.

That is why we welcome any new tech that increases brightness and reduces power consumption, and WhiteMagic seemingly does both. The Sony Xperia P is equipped with a 4" WhiteMagic display, whose peak brightness reaches the hefty 935 nits, almost as much as the brightest 1000 nits phone screen out there on the Nokia 701. For comparison, the brightest Android display is currently the 4.3" NOVA Plus on the LG Prada 3.0, with 800 nits. Sony's claim is that this is the brightest smartphone screen at this pixel density, and we agree, since the 3.5-incher on the Nokia 701 has about 210ppi, compared to the Xperia P's respectable 275ppi.

How did Sony achieve its WhiteMagic technology breakthrough? With white... pixels, of course - the usual red-green-blue RGB matrix here is RGBW. Traditionally, the light has to pass through all three pixels to mix various proportions of red, green and blue so as to form white. 

With adding a white pixel, the light passes directly through it to form the true white. Thus you can either save 50% of the backlight energy required to pass through all three pixels in RGB matrices, or have twice the luminosity at peak brightness.

And on the Xperia P Sony has done the wise thing by making the phone chose one of these modes automatically. When outside on a sunny day, we all know how frustrating it is to try and use your smartphone, whose screen all of a sudden pales in comparison with the rays pouring on it. The Xperia P's ambient light sensor then revs up the brightness to its maximum 935 nits level, making the screen more visible in direct sunlight.

When indoors or on a cloudy day, the sensor tones down brightness to about 530 nits, which is the typical maximum LCD screen brightness. In that indoor mode, the handset's backlight consumes about 50% less energy compared to conventional LCDs, since the only half of the LED backlighting elements are required to work. 

Sony details its ultra-bright WhiteMagic display tech to make us salivate over the Xperia P
We can't wait to get a Sony Xperia P in our hands and test both the power consumption and outdoor visibility claims for the WhiteMagic screen tech. In the meantime, you can check our outdoor visibility comparison between the 600 nit iPhone 4 and the 1000 nit Nokia 701 in the video below, to see the difference for yourself.

source: Sony


7 Comments
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posted on 08 Mar 2012, 07:52 3

1. PimpStrong (Posts: 310; Member since: 25 Jul 2011)


This is a major improvement for brightness and energy efficiency but what about black levels and contrast? I can't imagine adding white will help LCDs produce truer blacks like AMOLED can. Impressive though Sony.

posted on 08 Mar 2012, 08:52 5

4. cepcamba (Posts: 717; Member since: 27 Feb 2012)


I think RGBW is the way to go, kudos to Sony for that. I think what they should work on now is how to totally turn off these pixels to produce a true black.

posted on 08 Mar 2012, 09:35 1

5. PimpStrong (Posts: 310; Member since: 25 Jul 2011)


I don't think those moving Crystals will ever completely block the back lighting.

posted on 08 Mar 2012, 09:46

6. cepcamba (Posts: 717; Member since: 27 Feb 2012)


I can actually think of a couple of ways to block the back lighting, but I can't think of a power efficient one.

posted on 08 Mar 2012, 07:56 5

2. andro. (Posts: 1971; Member since: 16 Sep 2011)


I've had this phone hands on recently at a team briefing we had in my store as these phones are launching very soon. It is indeed and impressive screen,the build of the new xperia phones are excellent also. Sonys line up this year is very good

posted on 08 Mar 2012, 08:05 3

3. the_s2 (Posts: 210; Member since: 22 Nov 2011)


Yeah, It shoulda been mentioned, 'this technology, comes with a catch though'. I'd rather stick to amoled panels, and as far as sunlight legibility and black levels is concerned, I think nothing beats ClearBlack tech from good old Nokia.

posted on 09 Mar 2012, 07:48

7. Bangthering_007 (Posts: 36; Member since: 21 Feb 2012)


In fact this is another variation of the PENTILE MATRIX arrangement.

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