The confrontation fans of IPS and AMOLED-matrix is akin to a never-ending battle between fans of iOS and Android.
And everything seems to be in this opposition is clear. IPS — more reliable, cheaper, but less colorful, consumes more energy and outdated. AMOLED is bright, colorful, and indeed for him the future. But as in the case of operating systems, each type of matrix has its adherents are foaming at the mouth will tell you about its merits.

Fans of IPS-matrix, sleeve has always been a serious trump card, even a learned about it recently (presumably when AMOLED-matrix in their devices finally started to use Apple). What kind of trump card?

Without exception, all AMOLED displays fade

Of course, it has other disadvantages: high price, twinkling and “fragility”. However, if the price and fragility it is possible to do something (e.g. make more money or wear protective glass), the burnout nothing can be done. Two or three years and the display will begin to fade, regardless of the manufacturer and quality.

Burn pixels is what bothers AMOLED hardest to win market leadership.

So why AMOLED displays work? Let’s in order.

The difference between IPS and AMOLED

To IPS-matrix, the light source is a backlight. The amount of light passing through the crystal is controlled by blocking the backlight. A real white color to generate a impossible, so the LCD backlight creates imaginary white color, with a light shade of blue. The rest of the colors on the IPS-matrix, close to natural, but not as colorful. The technology is passive, but the color balance more stable.

AMOLED, on the contrary, active. “AM” means active matrix, that is, active matrix. The most important component in these displays is light-emitting diode (LED). LEDs are much smaller and placed in the form of red, blue and green clusters which together make up one pixel. It can play white, and other colors are bright, juicy and colorful. AMOLED displays the color balance is less stable because different LEDs have different lifetime. Color balance with time slightly shifted, hence in some parts of the screen colors will look juicy and bright, while at other sites you will see the wear.

AMOLED display

Why AMOLED burn?

The whole point of technology. Like I said, some LEDs are long, some burn out faster. To be precise, the most often burn out blue subpixels, because the brightness is much lower red and green subpixels.

Over time blue diodes weaken and the screen starts to “go” in green and red colors. This is what is called burnout.

Difference is especially noticeable on a black background. Where on some devices the buttons located in the navigation as a rule, the black background, so the pixels are there, do not fade. If you compare this area with the rest of the screen, the difference will be visible to the naked eye.

What do company?

Unfortunately, burnout affects all AMOLED displays, so there’s nothing you can do. However, many manufacturers have learned to mask burnout, the difference was not so noticeable.

The most common two ways to disguise burnout:

PenTile

For the first time this technology was used in Samsung devices. Screens with this technology is less than half blue (which, as we remember, it fades the fastest) and red diodes. Blue diodes intentionally made the largest and most powerful and it turns out that they work only half the power. Hence the result — all sub fade evenly, and the difference is not as noticeable.

the PenTile technology in comparison with conventional RGB
Pixel Shifting

Another way of extending the life of pixel — negligible bias with a software algorithm. If the screen for a long time shown a static image, the algorithm sees it, and shifts the image by one pixel.

The user does not notice, and vibrant life of pixel is slightly increased.

shifted pixels (right)

What to do with the user?

Several techniques, which will help increase the lifespan of AMOLED-matrix and avoid burnout:

Rearrange the icons on the desktop.
Use a dark Wallpaper, and change them often.
Use live Wallpaper. Unlike conventional counterparts, they will keep the matrix from burnout.
Don’t crank up the brightness to full. Ideally — always set to 50%, but if you find this unacceptable, use auto brightness.
Disable Always On Display. A static image is burned much faster, therefore, make sure that the AMOLED display was not working just.

These techniques will not save your display from fading, but will help to prolong its life.

Summary

You need to understand that despite all the shortcomings of AMOLED displays, they are the future. Most likely, after a couple years the market will be the monopoly AMOLED’a.

Companies will have to come up with new ways to extend the life of the matrix, and I recommend users to upgrade to devices with AMOLED’om now.

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