Cellular Phone Screen Technology: Super AMOLED Display
More than the past three years from the introduction with the iPhone towards the newest mobile operating system Windows Phone 7, mobile phones have been getting quickly much more sophisticated and have been transformed using the introduction of applications. However, though it is the software – apps and operating systems – that have dominated headlines, this functionality wouldn’t be possible without supporting developments in hardware. For instance all those HTC Desires and iPhone 4s would be almost inoperable without the help of speedy 1GHZ Snapdragon processors. Similarly, web browsing and photo viewing could be futile without the assistance of robust mobile telephone screens.
Indeed Samsung has been pulling customers away from smartphone titans HTC and Apple with the astonishing super AMOLED screens on its top-end mobile phones like the Omnia 7 and Galaxy S. But what makes Samsung’s screens so super? Read on an understanding of how mobile phone screens function and what makes a super AMOLED display stand out.
TFT LCD screens
For some time the industry typical for touch screen mobile phones was TFT LCD – thin film transistor liquid crystal display. TFT LCDs were a significant advance more than prior cathode ray tube displays (CRTs) for being much more lightweight, dependable and cheaper.
Nevertheless, liquid crystals are unable to directly emit light and so TFT LCD screens also need a backlight. So a TFT LCD screen has several layers – back light, liquid crystal, touch screen sensors and outer window. These extra layers blunt the image and colour.
AMOLED screens
The next progressions from TFT LCD displays are AMOLED screens (active-matrix organic light-emitting diode screen). An OLED screen is also specific type of thin film display. However unlike a TFT LCD it’s able to create its very own light utilizing organic compounds. This makes an OLED display thinner than a TFT LCD because it does away with the back light layer. The ‘active matrix’ – the AM of AMOLED – is the technologies that orders the display’s pixels permitting it to display finer pictures with stronger colour.
Importantly for smartphones with their wide range of battery-sucking features, an AMOLED screen uses much less energy than an LCD screen.
Next generation AMOLED screens
Samsung will be the most high profile manufacturer to take AMOLED screens a step additional by incorporating touch screen sensors directly into the display screen. These ‘super AMOLED’ displays operate as an AMOLED screen does but with out the require for an additional layer of capacitive touch screen sensors.
Though the name isn’t really as evocative as the iPhone 4’s “Retina Display”, Samsung’s super AMOLED screens have certainly given devices such as the Samsung Omnia 7 a competitive edge. Reviewing it, the display resolution is superb. It’s especially well suited to the Windows Phone 7 interface -Microsoft’s vivid menus and windows pop with rich colour. The brightness levels are also up on the typical, which gives solid black along with a crisp contrast ratio. By decreasing the quantity of layers and the spaces in between them, the screen is also much more usable in direct sunlight than most OLED mobile phone screens and has a wider viewing angle.
Screens with the Long term
For now the super AMOLED screen is in the highest finish of mobile phone screen technology. But how will screens create within the future? Manufacturers are currently working on solutions for common complaints, like widening viewing angles and also the strength of colours in direct sunlight. This will be even more essential as tablet devices improve in uptake and users come to expect much more visual functionality of their phones, tablets and e-readers.
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