OLED Phone Screens Explained
OLED is the screen type behind nearly every phone in our library. This page covers how it makes an image, what AMOLED and the brand names mean, and the two trade-offs worth knowing: burn-in and how battery use depends on what is on screen. General claims come from the sources listed at the bottom; counts are ours.
How does an OLED screen make an image?
An OLED screen makes an image by letting each pixel emit its own light when current passes through a thin organic film. Wikipedia describes the film as sandwiched between two electrodes, with electrons and holes recombining in the organic layer and giving off visible light as the excited state decays.
The consequence is the main selling point: Wikipedia says individual pixels emit their own light and require no backlight. A pixel that is off gives off no light, so black areas can be truly black. An LCD works the other way, with a backlight shining through a liquid crystal layer that cannot block all of it.
What is AMOLED, and what do the brand names mean?
AMOLED means active-matrix OLED, and it is a label many phone spec sheets use, including the Samsung and Motorola pages in our library. Wikipedia says an AMOLED uses a thin-film transistor backplane to switch each individual pixel on or off, which allows higher resolution and larger screens. The other form, PMOLED, controls each row and line one at a time.
The names on a spec sheet are mostly maker branding on top of that.
| Name | What the source says | Source |
|---|---|---|
| AMOLED | Active-matrix OLED, a thin-film transistor backplane switches each pixel | Wikipedia: OLED |
| Super AMOLED | Samsung’s version that integrates the touch digitizer into the display | Wikipedia: AMOLED |
| Dynamic AMOLED | Samsung says it builds on Super AMOLED; Samsung describes it as Super AMOLED with HDR10+ certification | Samsung UK |
| Super Retina XDR | Apple’s name for the iPhone 17’s 6.3-inch all-screen OLED display | Apple specifications |
| Extreme AMOLED, Super Actua | Motorola’s and Google’s display names on several phones in our library | Our phone pages |
These are labels, not grades. A maker’s name tells you who sells the screen, not how it measures against another phone’s screen, and the brightness and contrast numbers on a spec sheet are the maker’s own claims. Apple, for example, lists the iPhone 17 at 1,000 nits typical maximum brightness, 1,600 nits peak for HDR and 3,000 nits peak outdoors. Those are Apple’s figures, not independent measurements.
What are the advantages of OLED?
The advantages Wikipedia lists are contrast, response time and form factor. Because off pixels emit nothing, Wikipedia says the contrast ratio can be very large. It says OLED response times are up to 1,000 times faster than LCD, under 10 microseconds. And because OLEDs can be built on plastic substrates, Wikipedia says they can be flexible and transparent, which is what made folding phones possible.
Wikipedia dates the first practical OLED device to 1987, built by Ching Wan Tang and Steven Van Slyke at Eastman Kodak. It says Motorola’s Timeport P8767 in 2000 had the first OLED display on a cell phone, and that Samsung’s Galaxy S series, starting in 2010, popularized Super AMOLED. It lists the first foldable phones as Royole’s device in October 2018 and the Samsung Galaxy Fold in February 2019.
Can OLED phone screens burn in?
In principle yes: Wikipedia says OLEDs may be more susceptible to burn-in or brightness degradation than LCDs. It says blue OLED material degrades much faster than the materials for other colors.
The best independent lab data we found is about TVs and monitors, not phones. Tom’s Hardware reported on RTINGS testing of over 100 TVs for ten months, which RTINGS equated to about four years and two months of typical use. The test ran a 24/7 news feed at maximum brightness.
| Result from the RTINGS test | Finding |
|---|---|
| OLED TVs, 10 months | Every OLED TV developed some permanent burn-in, worse on some than others |
| LCD TVs, 10 months | Uneven-brightness degradation on every LCD TV, described as far more severe than on the OLED TVs |
| OLED monitors, 6 months | Very little image retention |
| Equipment failures | Five TVs and one monitor died during testing |
Phones are used differently from a TV running one channel at full brightness, so treat this as evidence that the effect is real, not as a phone lifespan figure. We have no independent phone burn-in data on this site, and we do not claim any phone is or is not affected.
Does OLED use less battery than LCD?
It depends on the picture: an OLED uses less power on dark images and more on bright ones. Wikipedia says an OLED consumes around 40% of an LCD’s power showing a mostly black image, 60 to 80% for the majority of images, and more than 300% for an image with a white background such as a document or web page.
Wikipedia’s dark mode article adds that Google measured full-brightness white at roughly six times the power of pure black on a 2016 Google Pixel, and that going from dark gray to true black saves less than 1% more. So a dark theme helps on an OLED, but pure black is not much better than dark gray.
What are the weak spots besides burn-in?
Sunlight readability and flicker. Wikipedia says the metallic cathode in an OLED acts as a mirror with reflectance approaching 80%, which leads to poor readability in bright ambient light. It also says many OLEDs use pulse-width modulation to show brightness gradations, creating a subtle strobe effect. Neither point is a rating of a specific phone. Our phone pages do not record dimming method, so check an independent lab review if flicker matters to you.
Which phones in our library use OLED?
Forty of 41 phones are listed as OLED (36) or LTPO OLED (4); the Moto G Power (2026) is the only LCD. That includes all 17 Apple, all 13 Samsung and all 5 Google phones in the library, plus 5 of 6 from Motorola. Screen sizes run from 6.1 inches to 8.0 inches. These counts describe our library of 41 phones, not the phone market. Browse the phone library, or read about LTPO OLED, the OLED variant that can change its refresh rate over a wide range.
Related
Screens hub, LCD explained, LTPO OLED, refresh rates, screen replacement basics, Samsung hub, Apple hub.