ESPOO, Finland – In the past, phones were largely measured  and compared by a few factors: ease of use, signal strength and the  quality of the calls. However, over the years, phones have become  smarter and do more, and there are now other components on the phone  that are starting to be used to measure their quality. Many of us would  probably put the display towards the top of the list. The display’s  quality, its brightness, the viewing angle, the ability to be read in  all lighting conditions, are all important. So it’s no surprise that one  of the big talking points for the new devices launched at Nokia World  2010 was a new technology known as ClearBlack display. 
ClearBlack display isn’t a completely new type of display technology  like AMOLED. It’s actually a method to reduce reflections on the screen  and improve visual image quality, especially outdoors. ClearBlack  ensures that the blacks you see really are just that – black – which in  turn enhances the contrast of the display and makes the whole screen  much easier to see. This will be especially useful for apps like Ovi  Maps, which are likely to be used outside. Also, sharing pictures or  other items on-screen with others will be a lot easier due to the  technology that enables excellent viewing angles.
The effect of the ClearBlack display technology is similar to that  produced by a pair of polarising sunglasses. If you look at a body of  water on a sunny day without a pair of polarising glasses, it’s really  hard to see anything below the surface, but with the glasses on, the  reflections are eliminated and you can see underneath the surface. In  the same way, without ClearBlack display, you see the reflections on the  phone’s screen, but with it you see the image on the screen. However,  unlike sunglasses, ClearBlack display improves the vividness of the  colors: in fact, because the contrast is higher, they’ll seem more  vivid.
Another useful feature of this technology is also that the viewing  angle of the device’s display is improved, so sharing pictures or other  items on-screen will be a lot easier.
Here’s a picture of the Nokia C6-01 with ClearBlack display, alongside an early prototype of the same device without it:
Effectively, with ClearBlack display your device is able to provide a  high quality image in any type of situation, indoors, outdoors,  low-light and bright-light. ClearBlack display adjusts the brightness  automatically to optimum level depending on the conditions you are in.
Another advantage is that by improving the image quality, and  reducing the need to turn up the brightness, you also reduce the energy  needed to power the display, and hence reduce the battery drain compared  to regular technology, and so your mobile device will last longer  between charges. Of the new Symbian^3 phones, the Nokia C6-01, and the  Nokia E7 both have the very latest ClearBlack display technology. 
Watch out the video demonstration of Nokia's ClearBlack Display over here
Watch out the video demonstration of Nokia's ClearBlack Display over here