[bkumar86]

there seems to be a lot of confusion over the efficiency of amoled vs lcd. In lcd, the power consumed directly depends upon the brightness, basically LED's provide the back-light light source and the colors you see on the screen are the representative of the kind of filters the light from the LCD had to cross to reach the surface. All lcd's are in this way passive displays. In an AMOLED display, there are three sets of actual LED's per pixel visible on screen. Each of the led making up a pixel can be individually be turned on or off, resulting in a display color, resulting in the infinite contrast and brighter colors. The current technology restricts the brightness of each of those tiny led's resulting in a lower brightness, and also the individual tiny led's brightness varies over the life of the panel. this is the biggest shortcoming for an AMOLED.

When you see a picture of light on an AMOLED screen, it is actually true that a physical light is being prepared in front of your eyes on the screen by adding the three colors in proportion. this is not an easy task and so explains why lcd's as of now display truer colors. This truly is a modern technical achievement.

[alok-g]

>> this is not an easy task and so explains why lcd's as of now display truer colors

OLEDs have better color gamut and contrast than LCDs (without local dimming), making the colors better than LCDs.

[micampe]

OLEDs have larger color gamut, but larger is not always better.

“The Color Gamut is not only much larger than the Standard Color Gamut, which leads to distorted and exaggerated colors, but the Color Gamut is quite lopsided, with Green being a lot more saturated than Red or Blue, which adds a Green color caste to many images. Samsung has not bothered to correct or calibrate their display colors to bring them into closer agreement with the Standard sRGB / Rec.709 Color Gamut, so many images appear over saturated and gaudy.” – http://www.displaymate.com/Smartphone_ShootOut_2.htm

[bkumar86]

what i meant to explain was, this.. the LED's fade over time. hence their color changes over time. and making two LED's display the same color and making them time equally is a very challenging job, some thing which current day technology is unable to do. yes, led's have a bigger color gamut, but the accuracy is definitely to b improved. gamut is the range, while accuracy is the exact color required i.e precision