Technologies
What is Micro-OLED? Apple Vision Pro’s Screen Tech Explained
The microscopic version of the beloved display tech winds up the pixels per inch to insane levels. Here’s why Apple and others are so excited about this new version of OLED.

At WWDC 2023, Apple announced the Vision Pro AR/VR headset, which offered an impressive amount of technology and an equally imposing $3,500 price tag. Yet, one of the things that helps the Vision stand out from cheaper products from Valve and Meta is the use of a new type of display called micro-OLED. More than just a rebranding by the marketing experts at Apple, micro-OLED is a variation on the screen technology which has become a staple of best TV lists over the last few years.
Micro-OLED’s main difference from «traditional» OLED is right in the name. Featuring far smaller pixels, micro-OLED has the potential for much, much higher resolutions than traditional OLED: think 4K TV resolutions on chips the size of postage stamps. Until recently, the technology has been used in things like electronic viewfinders in cameras, but the latest versions are larger and even higher resolution, making them perfect for AR and VR headsets.
Here’s an in-depth look at this tech and where it could be used in the future.
What’s OLED?
OLED stands for Organic Light Emitting Diode. The term «organic» means the chemicals that help the OLED create light incorporate the element carbon. The specific chemicals beyond that don’t matter much, at least to us end-users, but suffice it to say when they’re supplied with a bit of energy, they create light. You can read more about how OLED works in What is OLED and what can it do for your TV?.

The basic differences between micro-OLED and «traditional» OLED.
The benefit of OLED in general is that it creates its own light. So unlike LED LCD TVs, which currently make up the rest of the TV market, each pixel can be turned on and off. When off, they emit no light. You can’t make an LED LCD pixel totally dark unless you turn off the backlight altogether, and this means OLED’s contrast ratio, or the difference between the brightest and darkest part of an image, is basically infinite in comparison.
OLED TVs, almost all manufactured by LG, have been on the market for several years. Meanwhile, Samsung Display has recently introduced OLED TVs that also feature quantum dots (QD-OLED), which offer even higher brightness and potentially greater color. These QD-OLEDs are sold by Samsung, Sony, and, in computer monitor form, Alienware.
Micro-OLED aka OLED on Silicon

The layers of a micro-OLED display.
Micro-OLED, also known as OLEDoS and OLED microdisplays, is one of the rare cases where the tech is exactly as it sounds: tiny OLED «micro» displays. In this case, not only are the pixels themselves smaller, but the entire «panels» are smaller. This is possible thanks to advancements in manufacturing, including mounting the display-making segments in each pixel directly to a silicone chip. This enables pixels to be much, much smaller .

Two Sony micro-OLED displays. They look like computer chips because that’s what they’re based on.
If we take a look at Apple’s claims, we can estimate how small these pixels really are. Firstly, Apple says the twin displays in the Vision Pro include «More pixels than a 4K TV. For each eye» or «23 million pixels.» A 4K TV is 3,840×2,160, or 8,294,400 pixels, so that should equate to around 11,500,000 pixels per eye for the Apple screens.
Next, Apple partnered with Sony (or maybe TSMC) to create these micro-OLED displays and they are approximately 1-inch in size. To calculate the size of each pixel I’m going to use 32-inch 4K TVs as a comparison, and these boast about 138 pixels per inch (ppi). We don’t know the aspect ratio of the chips in the Vision Pro, but if they’re a square 3,400×3,400 resolution that would be a total of 11,560,000 pixels, so that’s a safe bet. So, if that’s the case, these displays have a ppi of around 4,808(!) and that’s more than almost anything else on the market, and that’s by a lot. Even the high-resolution OLED screen on the Galaxy S23 Ultra has a ppi of «only» 500. Regardless of the panel’s production aspect ratio, the ppi is going to be impressive. Apple didn’t respond immediately to CNET’s request for clarification.
AR and VR microdisplays are so close to your eyes that they need to be extremely high performance in order to be realistic. They need extreme resolution so you don’t see the pixels, they need high contrast ratios so they look realistic, and they need high framerates to minimize the chance of motion blur and motion sickness. In addition, being in portable devices means they need to be able to do all that with low power consumption. Micro-OLED seems able to do all of these, but at a cost. Literally a cost. The Vision Pro is the most high-profile use of the high-end of the technology and it costs $3,500.

A monochrome micro-OLED display from the company Microoled, one of the largest manufactures of micro-OLED displays. On the right is the tip of a mechanical pencil.
The Micro-OLED technology isn’t particularly new, having been available in some form for over a decade. Sony has been using them in camera viewfinders for several years, as have Canon and Nikon. Like all display techs, however, micro-OLED has evolved quite a bit over the years. The displays in the Vision Pro, for instance, are huge and very high resolution for a micro-OLED display.

A high-resolution color micro-OLED display by the company Microoled.
How is micro-OLED different from MicroLED? Despite the fact that they’re written slightly differently, they are superficially similar in the way they are both self-emitting, or can make their own light. But on a more in-depth level, the differences between the carbon-based OLED and the non-carbon LED are sadly beyond the scope of this article. Suffice it to say right now, MicroLED is better suited for large, wall-sized displays using individual pixels made up of LEDs. Micro-OLED is better suited for tiny, high-resolution displays. This isn’t to say that MicroLED can’t be used in smaller displays, and we’ll likely see some eventually. But for now they’re different tools for different uses.
The future is micro?

The ENGO 2 eyeware uses a tiny micro-OLED made by the company Microoled. The display reflects off the inside of the eyeware to show you your speed, time, direction and other data. Basically anything an athlete would need for better training, but instead of on a watch or phone, it’s projected in real time in front of you. Essentially, a heads-up display built into sunglasses.
Where else will we see micro-OLED? At MWC 2023, Xiaomi announced its AR Glass Discovery Edition featured the technology, and future high-end VR headsets from Meta, HTC and others will likely use it. Currently, a company named Engo is using a tiny micro-OLED projector to display speed and other data on the inside of its AR sunglasses. I know I sure don’t need these, but I want them. Then there’s the many mirrorless and other cameras that have been using micro-OLED viewfinders for years.
Could we see ultra-ultra-ultra high-resolution TVs with this new technology? Technically, it’s possible but highly unlikely. Macro micro-OLED is just OLED. The resolutions possible using more traditional OLED manufacturing are more than enough for a display that’s 10 feet from your eyeballs. However, it’s possible micro-OLED might find its way into wearables and other portable devices where its size, resolution and efficiency will be an asset. That’s likely why LG, Samsung Display, Sony and others are all working on micro-OLED.
Will ultra-thin, ultra-high resolution micro-OLED displays compete in a market with ultra-thin, ultra-high resolution nanoLED? Could be. We shall see.
As well as covering TV and other display tech, Geoff does photo tours of cool museums and locations around the world, including nuclear submarines, massive aircraft carriers, medieval castles, epic 10,000-mile road trips and more. Check out Tech Treks for all his tours and adventures.
He wrote a bestselling sci-fi novel about city-size submarines and a sequel. You can follow his adventures on Instagram and his YouTube channel.
Technologies
Apple CarPlay Ultra vs. Google Built-In: How the Next-Gen Auto Software Rivals Compare
Apple and Google are supercharging their car software experiences. Here’s how they differ.

I’d spent an hour driving a $250,000-plus Aston Martin up the Los Angeles coast when my hunger pangs became impossible to ignore, and as I’ve done many times before, I asked Siri (through Apple CarPlay) to find me a taco place. But then I did something no other car on the planet allows: I asked Siri to blast the AC and make the air colder. That’s because the 2025 Aston Martin DBX I drove was the first vehicle to come with Apple CarPlay Ultra, the upgraded version of the company’s car software.
Apple debuted CarPlay Ultra at WWDC 2025 last month, and this year’s version of the Aston Martin DBX is the first vehicle to launch with it (pairing with an iPhone running iOS 18.5 or later). As I drove the luxury crossover around, I fiddled with other features that aren’t available in regular CarPlay, from climate control to radio to checking the pressure on the car’s tires. Ultimately, Ultra gives deeper access to more car systems, which is a good thing.
That reminded me a lot of a new feature announced at Google I/O back in May: Google Built-In, which similarly lets users control more of a car’s systems straight from the software interface (in that case, Android Auto). When I got a demonstration of Google Built-In, sitting in a new Volvo EX90 electric SUV, I saw what this new integration of Google software offered: climate controls, Gemini AI assistance and even warnings about car maintenance issues.
But the name is telling: Google Built-In requires automakers to incorporate Android deeper into their cars’ inner workings. Comparatively, Apple CarPlay Ultra support seems like it won’t require car manufacturers to do nearly as much work to prepare their vehicles, just adding a reasonably advanced multicore processor onboard that can handle an increased task load. (Aston Martin will be able to add CarPlay Ultra support to its 2023 and 2024 lineups through firmware updates because they already contain sufficiently advanced CPUs.)
Both solutions reflect Apple’s and Google’s different approaches to their next versions of car software. Apple’s is lighter weight, seemingly requiring less commitment from the automaker to integrate CarPlay Ultra into their vehicles (so long as it has adequate processing power onboard), which will run through a paired iPhone. Google Built-In does require much more integration, but it’s so self-sufficient that you can leave your Android phone at home and still get much of its functionality (aside from getting and sending messages and calls).
Driving with Apple CarPlay Ultra: Controlling climate, radio and more
As I drove around Los Angeles in the Aston Martin with Apple CarPlay Ultra, I could tell what new features I would be missing once I stepped back into my far more humble daily driver.
At long last, I could summon Siri and ask it to play a specific song (or just a band) and have it pulled up on Spotify. Since Apple’s assistant now has access to climate controls, I asked to turn up the AC, and it went full blast. I asked to find tacos and it suggested several fast food restaurants — well, it’s not perfect, but at least it’s listening.
To my relief, Aston Martin retained the physical knobs by the gearshift to control fan speed, temperature, stereo volume and the car’s myriad roadway options (like driving assistance) in case the driver likes traditional controls, but almost all of them could also be altered in the interface. Now, things like radio controls (AM/FM and satellite) and car settings are nestled in their own recognizable apps in CarPlay’s interface.
Ultimately, that’ll be one of CarPlay Ultra’s greatest advantages: If you enter an unfamiliar vehicle (like a rental), you still know exactly where everything is. No wrestling with a carmaker’s proprietary software or trying to figure out where some setting or other is located. It’s not a complete replacement — in the Aston Martin’s case, there were still a handful of settings (like for ambient light projected when the doors open) that the luxury automaker controlled, but they were weaved into CarPlay so you could pop open those windows and go back to Apple’s interface without visibly changing apps.
The dependable ubiquity of Apple’s CarPlay software will likely become even more essential as cars swap out their analog instrument clusters for screens, as Aston Martin did. There’s still a touch of the high-end automaker’s signature style as the default screen behind the wheel shows two traditional dials (one for the speedometer, one for RPMs) with Aston Martin’s livery. But that can be swapped out for other styles, from other dials with customizable colors to a full-screen Maps option.
Each of the half-dozen or so dashboard options was swapped out via square touchpads smaller than a dime on the wheel next to the other touch controls. On the dual-dial display types, I swiped vertically to rotate between a central square (with Maps directions, current music or other app information) or swiped horizontally to switch to another dashboard option. No matter which one you choose, the bottom bar contains all the warning lights drivers will recognize from analog cars — even with digital displays, you’re not safe from the check engine light (which is a good thing).
Apple CarPlay Ultra doesn’t yet do everything I want. I wish I could also ask Siri to roll down the windows (as Google Built-In can — more on that later) and lock or unlock specific doors. If Apple is connected to the car enough to be able to read the pressure in each tire, I wish it could link up with the engine readout and be able to tell me in plain language what kind of maintenance issue has sprung up. Heck, I wish it could connect to the car remotely and blast the AC before I get in (or fire up the seat warmer), as some proprietary car apps can do. And while Apple Maps and Waze will be included at launch, Google Maps support is not, but it’s coming later.
These aren’t huge deficiencies, and they do show where CarPlay Ultra could better meet driver needs in future updates, notwithstanding the potentially dicey security concerns for using CarPlay Ultra for remote climate or unlocking capabilities. But it shows where the limits are today compared to Google’s more in-depth approach.
Google Built-In: Deeper car integrations — and, of course, Gemini AI
The day after Google I/O’s keynote was quieter back in May, as attendees flitted between focused sessions and demos of upcoming software. It was the ideal time to check out Google Built-In, which was appropriately shown off in a higher-end Volvo EX90 electric SUV (though not nearly as pricey as an Aston Martin).
As mentioned above, Google Built-In has deeper integrations with vehicles than what I saw in Apple CarPlay Ultra, allowing users to change the climate through its interface or access other systems, including through voice requests. For instance, it can go beyond AC control to switch on the defroster, and even raise and lower specific windows relative to the speaker’s position: cameras within the car (in the rearview mirror, if I remember right) meant that when my demonstrator asked to «roll down this window» pointing over his left shoulder, the correct window rolled down.
Google Built-In is also connected to Gemini, Google’s AI assistant, for what the company is calling «Google Live,» a separate and more capable version of the Android Auto assistant experience in cars right now. With a Live session, I could request music or directions much like I could with Siri — but my demo went further, as the demonstrator tasked Gemini with requests better suited for generative AI, such as asking, «Give me suggestions for a family outing» and telling it to send a specific text to a contact.
The demonstrator then asked Gemini for recipe advice — «I have chicken, rice and broccoli in the fridge, what can I make?» — as an example of a query someone might ask on the drive home.
Since you’re signed into your Google account, Gemini can consult anything connected to it, like emails and messages. It’s also trained on the user manuals from each car-maker, so if a warning light comes on, the driver can ask the voice assistant what it means — no more flipping through a dense manual trying to figure out what each alert means.
There are other benefits to Google Built-In, like not needing your phone for some features. But there are also drawbacks, like the need to keep car software updated, requiring more work on Google’s end to make sure cars are protected from issues or exploits. They can’t just fix it in the most current version of Android — they’ll need to backport that fix to older versions that vehicles might still be on.
This deeper integration with Google Built-In has a lot of the benefits of Apple CarPlay Ultra (a familiar interface, easier to access features), just cranked up to a greater degree. It surely benefits fans of hands-off controls, and interweaving Gemini naturally dovetails with Google’s investments, so it’s easy to see that functionality improving. But a greater reliance on Android within the car’s systems could be concerning as the vehicle ages: Will the software stop being supported? Will it slow down or be exposed to security exploits? A lot of questions remain regarding making cars open to phone software interfaces.
Technologies
A Samsung Tri-Fold Phone Could Be in Your Future, if This Leak Is to Be Believed
UI animations might have revealed the imminent release of a so-called «Galaxy G Fold» device with three screens.

Samsung has been showing off mobile display concepts with three screens at trade events such as CES for several years, but it might finally bring one to market soon if a leaked UI animation is any indicator.
As reported by Android Authority, an animated image from a software build of One UI 8 appears to show what some are dubbing a «Galaxy G Fold» device with three display panels. The screens would be capable of displaying different information or working in unison as one large display. The new phone model could debut as early as next week at Samsung’s Unpacked event on July 9 in Brooklyn.
Huawei released a tri-folding phone in February, the Mate XT Ultimate Design.
Some websites have gone into overdrive trying to uncover details on what Samsung’s new device might include and how much it may cost, with Phone Arena reporting that according to a Korean media report, it could be priced at about $3,000.
Samsung didn’t immediately respond to request for comment.
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