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Mobile Phone Display Technology: Super AMOLED Display

Author : Jesse Anisa

More than the past 3 years from the introduction of the iPhone to the newest mobile operating program Windows Phone 7, mobile phones have been getting quickly more sophisticated and have been transformed using the introduction of applications. Nevertheless, though it is the software - apps and operating systems - which have dominated headlines, this functionality wouldn't be feasible without supporting developments in hardware. For instance all these HTC Desires and iPhone 4s would be nearly inoperable with out the help of speedy 1GHZ Snapdragon processors. Similarly, web browsing and photo viewing would be futile without the support of robust mobile phone screens.

Indeed Samsung has been pulling clients away from smartphone titans HTC and Apple using 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? Study on an understanding of how mobile telephone screens function and what makes a super AMOLED display stand out.

TFT LCD screens

For some time the business average for touch screen mobile phones was TFT LCD - thin film transistor liquid crystal display. TFT LCDs were a significant advance over prior cathode ray tube displays (CRTs) for becoming much more lightweight, reliable and cheaper.

However, liquid crystals are unable to straight emit light and so TFT LCD screens also require 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 following 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 in contrast to a TFT LCD it is in a position to create its own light utilizing organic compounds. This makes an OLED display thinner than a TFT LCD as it does away using the back light layer. The 'active matrix' - the AM of AMOLED - is the technologies that orders the display's pixels allowing it to display finer images with stronger colour.

Importantly for smartphones with their wide range of battery-sucking features, an AMOLED screen uses 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 straight into the display screen. These 'super AMOLED' displays operate as an AMOLED screen does but with out the need for an additional layer of capacitive touch screen sensors.

Although the name is not really as evocative as the iPhone 4's "Retina Display", Samsung's super AMOLED screens have certainly offered devices such as the Samsung Omnia 7 a competitive edge. Reviewing it, the display resolution is superb. It is particularly nicely suited towards 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 provides solid black along with a crisp contrast ratio. By decreasing the number of layers and the spaces 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 of the Future

For now the super AMOLED screen is in the highest finish of mobile phone screen technologies. But how will screens develop in the long term? Manufacturers are currently operating on solutions for common complaints, like widening viewing angles and also the strength of colours in direct sunlight. This will be much more important as tablet devices increase in uptake and users come to anticipate much more visual functionality of their phones, tablets and e-readers.

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Tags:   cell phone, gadget, phone, electronic, mobile phone

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Submitted : 2011-03-16    Word Count : 870    Times Viewed: 305