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Samsung Dynamic AMOLED 2x Display: Explained

Samsung Dynamic AMOLED 2x Display: Explained

Samsung’s dynamic AMOLED 2x display is the best display Samsung offers for their flagship smartphones right now even in 2024. However, there are some mind-blowing facts that make this display panel unique in the world of smartphones. Let’s find out more about Samsung’s dynamic AMOLED 2x display.

 

In this article

Introduction to AMOLED | AMOLED vs OLED | Dynamic AMOLED | What is Dynamic AMOLED 2X? | Working Procedure

 



 

Introduction to AMOLED

AMOLED is an advanced OLED display technology, which stands for Active-Matrix Organic Light Emitting Diodes. This AMOLED word signifies 2 things about the display, AM and OLED. Active Matrix is the electronic work that takes place while the display is in use. OLED is the millions of tiny LEDs that light up to portray the display content including colors.  

 

AMOLED vs OLED

Now, the question is, what is the difference between AMOLED and OLED? Well, AMOLED is the updated version of OLED displays with a lighter, smaller, thinner, and more flexible structure. Therefore, AMOLED screens are thinner in size, more compatible with higher refresh rates, ideal to be used in a foldable device, and offer improved quality videos and pictures.

 

Some other AMOLED screen advantages are low power consumption, more color accuracy and ability to show pitch black, ultra slim design, and reduced blue light emission.

 




 

Dynamic AMOLED

Well, Samsung launched a new AMOLED display back in 2019, the Dynamic AMOLED display. Certain factors played a role in naming this new display as Dynamic AMOLED, such as HDR10+ certification for more brightness, color, and contrast. Worth mentioning that the dynamic AMOLED display is also certified by VDE Germany for 100% Mobile Colour Volume in the DCi-P3 colour range.

 

What is Dynamic AMOLED 2X?

Samsung did not stop there as the smartphone market is always improving. Samsung took their new AMOLED display and made it better, then named Dynamic AMOLED 2X. Well, there are some significant improvements seen in this display.

 




 

DTM

This better AMOLED display has DTM (Dynamic Tone Mapping) that optimizes color and contrast to give a 100% accurate DCI-P3 color gamut. Therefore, you get to see cinema-grade videos and very sharp pictures without any distortions.

 

High refresh rate

The ‘2X’ part of the Dynamic AMOLED 2X display relates to the upgraded refresh rate from 60 Hz to an exceptional 120 Hz ensuring super smooth scrolling and highly responsive movements – perfect for fast-paced gaming and multitasking. Screen flashing 120 times per second is super satisfying to look at. However, it consumes more battery than the screen previously used and flashes 60 times per second.

 




 

Adaptive refresh rate

Samsung further initiated dynamic or adaptive refresh rate, which allows the display to use between 1 Hz to 120 Hz refresh rate for smooth scrolling when needed and to conserve battery whenever possible. Now, when the display detects you are scrolling or viewing contents in motion, it switches to 120 Hz for out-of-the-world responsiveness and viewing experience. When you are just reading something, or the screen is idle, the dynamic AMOLED 2x display reduces the refresh rate to 1 Hz to conserve battery. However, most online videos are 60 Hz-supported, so when you see a video online, this display locks the refresh rate to 60 Hz, efficient huh!

 

Adaptive brightness

Apart from all these, Samsung also decided to work on brightness on its devices. Samsung also refined its adaptive brightness feature as a dynamic AMOLED 2x display offers more control over how it is operated. Thus, you get the perfect brightness on your Samsung device depending on the lighting condition around you.

 

PWM dimming

AMOLED and OLED displays often suffer color correction issues when the brightness is lower than 90 nits. The Green looks grayish, the Red seems faded, and the Blue is not Blue anymore. As mentioned before, each LED is responsible for color and brightness on an AMOLED display. When the screen dims, each LED consumes less power to produce dimmed content on your screen with the same PWM rate i.e. around 480 Hz. When the PWM is at 480 Hz, the dimmed screen looks dull due to the lack of light generated by the LEDs. This creates issues with the colors of the contents.

New AMOLED and OLED displays are using PWM dimming to address this issue. Here, the LEDs consume less power as usual when the screen dims, but use a higher PWM rate i.e. around 2160 Hz. With PWM as high as 2160 Hz, human eyes are able to see contents on the screen with no issues. Thus, color accuracy remains intact even if you are using less than 30 nits.




 

Working Procedure of the Dynamic AMOLED 2X Display

The working procedure for this high-end display is a bit complicated. However, we tried to explain the mechanism as simple as possible.

 

Structure

As mentioned before, OLED displays are basically millions of tiny LEDs arranged in a matrix. Each of them has 3 segments to represent 3 basic colors, Red, Green, and Blue. Unlike LCD displays, each LED is independent of turning on or turning off. On top of this there is a thin glass layer, which also includes a touch sensor layer with air gaps between them. This is called a digitizer. The overall display is then protected by another layer of glass, i. e the protective glass.

 

Touch detection

The above-mentioned touch sensor layer has a film with electrodes. When you touch the screen, the electrodes of the film of that area touch the thin glass layer. This causes a voltage difference, which the display registers as a touch.

 




 

Displaying content

If the display needs to show you the time, it simply turns on the corresponding mini-LEDs to portray a clock. All other LEDs remain turned off. For LCD displays, the entire screen needs to be turned on to show you the time; even the diodes corresponding to black areas. Thus, if you are using pitch-black wallpaper and dark mode on a Samsung dynamic AMOLED 2X display, you will be able to get more battery life or screen time.

 

Wrapping Up

Samsung Dynamic AMOLED 2x Display is the best display currently out there in the market. Samsung put a lot of time and effort into maximizing the efficacy of this technology. All Samsung flagship devices are equipped with the Samsung dynamic AMOLED 2x display. Even though you can barely see what is happening underneath the display, you should be able to tell the difference compared to other displays in terms of viewing experience and efficiency.

 

Stay tuned for more Samsung and technology updates. Comment below what your thoughts are. Share with your family and friends. Let us know if you have a leak or something to share.




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