Concept in Definition ABC

They say it is one of the best screen display technologies, especially in its app to mobile devices and, more specifically, in smartphones, and really, those who mount a screen of this type are among the terminals with the best reviews in this aspect of the market. It is the technology AMOLED.

The acronym AMOLED stands for Active-Matrix Organic Light-Emitting Diode, a technology in which the light source and the colored LED are fused into a single layer.

This allows thinner screens to be made than with other technologies, which separate the light source from the LED that gives the image color, so two layers are necessary.

The use of AMOLED technology results in more vivid colors, tending towards warm tones as opposed to the cooler and muted tones of other technologies, such as IPS LCD.

An advantage of being able to address each pixel individually in AMOLED is that we can turn them on or off at will.

This is done from the matrix of pixels, which are illuminated by electrical signals. It allows, as a result, a pure black color, since the pixels that should show that color are off. Pure black is a total and absolute black, much deeper than in other technologies.

And this is so because in these other technologies, the pixel remains on despite showing the black color, which does not prevent a brightness or that it is minimal.

Showing brighter colors is also useful in low light situations, since we will always see the AMOLED screen better.

Instead, in situations like incidence sunlight directly on the screen, we found that in many cases IPS LCD technology outperforms AMOLED in ease of view.

Among the problems that the use of AMOLED technology presents, we find "burns" and the effect ghostin.

Burns are produced by representation, over an extended period of time, of images fixed. These, when disappearing, leave a visible mark in the form of strokes on the screen for a short time, due to the nature of the technology. This trail looks like burns that leave a mark, even for a few moments, hence its name.

This can be annoying in the presentation of photographs, slides, or when we put movies on pause.

For its part, the effect ghostin consists of a delay in rate of refreshment that leads us to see video images with a slight trace that we can also appreciate when we move a icon or the mouse cursor. The last generation of panels lacks or greatly limits this unwanted effect.

Is AMOLED technology better than the others? It has its advantages and disadvantages, its supporters and detractors, and this question cannot be answered because it is just another technology.

Photos: Fotolia - Birdlk / F.C.G.