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Tuesday, 31 October 2017


We have been using mobile phones since April 4, 1973, almost 44years. Mobile phones went through many evolution since then. First mobile phone launched by Motorola consisted of keypad. In 1992, the IBM Simon was the first phone with a touchscreen launched by Bellsouth, an American telecommunication company. Simon had a 3 inch resistive touch screen with resolution 160 x 293. The screen was of model passive monochrome of LCD system. After IBM Simon, iphone was launched, back in 2007 by Steve Jobs, which brought revolution to the mobile industry. Apple used LCD screen in their first iphone. But the revolution was yet to be brought!
On 2nd May, 2011 Samsung launched their second phone of their flagship series, Galaxy S2. As there was already many smartphones were available in the market, so there was nothing more unique about Galaxy S2. The only uniqueness was its display. Samsung used super AMOLED display in galaxy S2 and changed the view of the the public towards the display used in mobile phones. But, wait! What is AMOLED and how it is different from IPS LCD?


AMOLED stands for active-matrix organic light emitting diode. It adds a layer of semiconducting film behind the OLED panel. As the thin layer is a semi conducting film, therefore as soon as an current applied to the film it emits light. In AMOLED display, the semiconducting film behind the OLED panel allows the display to activate each pixel. This makes it easy for larger, high definition displays with a lot of pixels. The pixel activation in AMOLED is 1000 times faster than LCD, making AMOLED a more crispier and high definition display. In AMOLED display each and every individual pixel emits light, so AMOLED screens have great constrast.


An LCD stands for Liquid Crystal Display. LCD has a backlight, so the whole screen is always on, even the black areas. It uses liquid crystals which emits light through electrical charges to cover or not cover pixels as needed, therefore even if we turn off the display, but LCD can never deliver true blacks as the backlight is always on.


As we know that in AMOLED display, each and every individual pixel emits light. So when it needs to create a BLACK colour, it simply turns off the pixels where we need black colour. Suppose an area 'x' where we need a black colour. Then the AMOLED display will turn off the pixel in an area 'x' and thus it provides us deep black colour. On the other hand, LCD uses backlight, which emits light to the whole display at a time. So it is impossible for LCD to provide a deep black colour as thejr backlight is always on. 
AMOLED screens have wide viewing angles and can be made transparent or flexible, depends upon situation. Samsung launched Galaxy S7 edge with edges on both sides of the phone. They used AMOLED screens in S7 edge and curved it near edges. This case is totally different with LCD screens. LCD screens cant be curved or cant be made transparent as they consists of mirror in back for reflection, glass in the middle, polarising film, cover glass. It is very difficult to make it transparent due to these components. 
AMOLEDs produce light from the individual pixels resulting in more rich, vivid and brighter colours on AMOLED screen than LCD. As a user, we can feel HD (720 x 1080) as more crispier on AMOLEDs even if LCD is QHD (2560 x 1440). AMOLEDs are likely to consume less power than LCD as AMOLED uses pixels to emit the display so black coloured area does not consume power but LCD uses backlight to emit display which always remains on.
These are the difference between these two display.
Hope you like it..
Be updated for the curiosity!!..
Good Bye.. Cheers!!..

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A tech and gadget lover who is passionate about writing. Life Goals: To shout from the Mountain Peak: Yes, I did it.


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