Sunday, September 29, 2013

LCD vs TFT vs AMOLED : Display Comparision



These days screen size of any mobile phone is benchmark to compare them. The more it will be big, more you will be impressed. But technology behind that screen in not much known for most of us. Even if the persons who know about LCD, TFT, IPS, AMOLED, SUPER AMOLED will be also confused that which one is better. 

These displays are generally having two main types. First one is LCD & second one is AMOLED. We know name LCD because it is used in the wide range of electronic products. But most of us are not aware about AMOLED. So let's discuss about it. 


display of xperia x10, htc desire, galaxy s having lcd, Super EMOLED

LCD:


LCD, liquid crystal display is made of wondrous liquid crystals. In which these crystals are combined between two couple of glasses with the use of the light source. They produce most realistic colors, but they does not represent much wider contrast ratio if we compare them with AMOLED.

TFT & IPS are also based on same LCD technology. TFT which is Thin Film Transistor & IPS is In Plane Switching. 

TFT makes LCD much efficient by making it's wiring reduced and also reduces electrodes per pixel. TFT improves image quality of LCD display.

IPS is improved from TFT by offering much better color reproduction and more accurate viewing angles. 

LCD is used in most of Sony, HTC, iPhone., etc. 

AMOLED:

AMOLED stands for Active Matrix Organic Light Emitting Diode. 
It is old technology but gained popularity in recent days. In this technology, a thin layer is made from thin layers which is zapped by an electric current. One major advantage of this technology is, it can create much thin layers and also do not require back light. This means it can create much better black colors and reduces battery usage because the back light is not used. 

Here three major colors Red, Blue and Green are divided in sub category like RGBG color. This is called as a 'pentile display'. But this have a disadvantage also, they can represent lower resolution because of much larger and visible sub pixels. 

Now a days, Samsung is known for their Super AMOLED, HD Super EMOLED displays. But this is nothing but simple AMOLED which is used with just prefix 'super'. They are traditional EMOLED. So do not fooled by these type of names. 

These are the devices which uses AMOLED technology: HTC ONE S, Galaxy series by Samsung.

google nexus having LCD and EMOLED display comparision

Conclusion:

Now let's come to the answer that which one is better? So my answer is both LCD and EMOLED have their own strength and weakness. So it is totally dependent on you which one is like by you personally. If you try and phone and you get good resolution, better color reproduction and good viewing angles, then definitely that display is good for you. 

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