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?.

A chart showing the basic differences between OLED microdisplays and traditional OLED displays. — The basic differences between micro-OLED and «traditional» OLED.

Sony

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

A cutaway diagram of a micro-OLED display. — The layers of a micro-OLED display.

Shanghai University

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. — Two Sony micro-OLED displays. They look like computer chips because that’s what they’re based on.

Sony

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 tiny monochrome micro-OLED display next to the tip of a mechanical pencil. — 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.

Microoled

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 7.8mm wide high-resolution Micro-OLED display. — A high-resolution color micro-OLED display by the company Microoled.

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 with the tiny Micro-OLED display built into the nosepiece. — 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.

ENGO

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

Tim Cook Riffs on Retirement Rumors, AI, Phone Addiction and Trump

The Apple CEO discussed a range of topics on Good Morning America.

Tim Cook isn’t going anywhere just yet — not during Apple’s 50th anniversary celebrations, not with the company preparing to introduce its first foldable phone, not while the tech giant is trying to figure out how to beat the AI race.

In a sit-down interview with Good Morning America host and Pro Football Hall of Famer Michael Strahan this week, Cook, who turned 65 in November, said there was no truth to the rumors that he is considering retiring from Apple. He became CEO of the company in 2011, 13 years after joining from Compaq.

«I love what I do deeply. Twenty-eight years ago, I walked into Apple, and I’ve loved every day of it since,» Cook told Strahan. «We’ve had ups and downs, but the people I work with are so amazing. They bring out the best in me, and hopefully I can bring out the best in them.»

Strahan interviewed Cook during the Apple CEO’s visit to Wadleigh Secondary School for the Performing & Visual Arts in Harlem, where students use Apple technology through the company’s partnership with the nonprofit Save the Music.

Speculation about Cook stepping down has been circulating since last November, when the Financial Times cited unnamed sources saying that Apple was preparing to usher in a new CEO «as soon as next year.» Bloomberg’s Mark Gurman threw water on that report, saying he «would be shocked if Cook steps down in the time frame outlined by the FT.»

During Cook’s tenure as CEO, Apple’s revenue has nearly quadrupled, with the tech giant adding dozens of new iPhone models, several more iPads, and updated Apple Watches and AirPods. This year, Apple has launched several new products, including the MacBook Neo, which at $599 has disrupted the budget laptop market. The company’s first foldable phone could come later this year.

Touch some grass

The GMA interview was short but wide-ranging, including Cook’s thoughts on how much people use their iPhones. Many studies estimate that people across most generations spend at least 4 hours a day on their phones, with millennials and Gen Z spending 5 to 6 hours.

When asked what he worries about most regarding Apple products’ impact on society, Cook weighed in, telling Strahan he doesn’t want people using iPhones «too much.»

«I don’t want people looking at the smartphone more than they’re looking in someone’s eyes,» Cook said, «because if they’re just scrolling endlessly, this is not the way you want to spend your day. Go out and spend it in nature.»

More on Apple from CNET:

AI and privacy

Cook told Strahan that AI «can be so positive,» but his response when asked whether he was «worried» about it was fairly flat.

«Technology doesn’t want to be good, and it doesn’t want to be bad,» Cook said. «It’s in the hands of the user and the hands of the inventor.»

Strahan questioned how much of iPhone users’ private lives are feeding Apple’s AI learning machine. Cook told him that because the smartphone is encrypted, Apple doesn’t have access to it. He went on to say: «When we can’t answer a question on your device, we send it to something called private cloud compute, which is essentially a big device in the sky that has the same kind of security and architecture as your phone.»

On its website, Apple says that it «does not use our users’ private personal data or user interactions when training our foundation models.»

To date, Apple has been cautious in diving into the AI scrum. While Amazon, Alphabet, Meta and Microsoft are spending nearly $700 billion combined on AI tech this year, Apple is «only» investing $14 billion.

Trump and tariffs

Cook has been criticized for being too cozy with the Trump administration: donating $1 million to President Donald Trump’s inauguration; giving him a 24-karat gold plaque; and attending a White House screening of Melania, a film about the First Lady.

The Apple CEO told Strahan that he’s «not a political person» on either side.

«I’m kind of straight down the middle, and I focus on policy,» Cook said. «So, I’m very pleased that the president and the administration is accessible to talk about policy.»

One of those policies has been tariffs, which Trump has imposed on many nations to varying degrees during his second term in office, purportedly to pressure companies to shift their manufacturing to the US. The president has largely spared Apple, which promised to invest $600 billion over four years to make more products in the US.

Cook told Strahan that the glass for the front and back of an iPhone will come out of Kentucky by the end of the year, and that 100 million chip engines will be manufactured in Arizona this year. He also noted that 20 billion semiconductors will be made in the US. «We’re a very proud American company, and we want to do as much here as we can,» Cook said.

Technologies

Today’s NYT Connections Hints, Answers and Help for March 19, #1012

Here are some hints and the answers for the NYT Connections puzzle for March 19 #1012.

Looking for the most recent Connections answers? Click here for today’s Connections hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle, Connections: Sports Edition and Strands puzzles.

Today’s NYT Connections puzzle features another tricky purple category, where words hide inside the clues and you have to dig them out. Read on for clues and today’s Connections answers.

The Times has a Connections Bot, like the one for Wordle. Go there after you play to receive a numeric score and to have the program analyze your answers. Players who are registered with the Times Games section can now nerd out by following their progress, including the number of puzzles completed, win rate, number of times they nabbed a perfect score and their win streak.

Read more: Hints, Tips and Strategies to Help You Win at NYT Connections Every Time

Hints for today’s Connections groups

Here are four hints for the groupings in today’s Connections puzzle, ranked from the easiest yellow group to the tough (and sometimes bizarre) purple group.

Yellow group hint: Children’s stories.

Green group hint: Lucky charms.

Blue group hint: One color, then the next.

Purple group hint: Hidden words relating to music.

Answers for today’s Connections groups

Yellow group: Folk tale characters.

Green group: Good luck symbols.

Blue group: Things that change color.

Purple group: Ending in music genres.

Read more: Wordle Cheat Sheet: Here Are the Most Popular Letters Used in English Words

What are today’s Connections answers?

The yellow words in today’s Connections

The theme is folk tale characters. The four answers are Chicken Little, Frog Prince, Gingerbread Man and Goldilocks.

The green words in today’s Connections

The theme is good luck symbols. The four answers are evil eye, four-leaf clover, horseshoe and rabbit’s foot.

The blue words in today’s Connections

The theme is things that change color. The four answers are chameleon, mood ring, sunset and traffic light.

The purple words in today’s Connections

The theme is ending in music genres. The four answers are baby blues, pet rock, scrap metal and soda pop.

Technologies

Today’s NYT Connections: Sports Edition Hints and Answers for March 19, #542

Here are hints and the answers for the NYT Connections: Sports Edition puzzle No. 542 for Thursday, March 19.

Looking for the most recent regular Connections answers? Click here for today’s Connections hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle and Strands puzzles.

Today’s Connections: Sports Edition is tricky. Remember that many athletes’ surnames look like common words, so if you’re having trouble sorting the answers, think about whether a particular word could be someone’s last name. If you’re struggling with today’s puzzle but still want to solve it, read on for hints and the answers.

Connections: Sports Edition is published by The Athletic, the subscription-based sports journalism site owned by The Times. It doesn’t appear in the NYT Games app, but it does in The Athletic’s own app. Or you can play it for free online.

Read more: NYT Connections: Sports Edition Puzzle Comes Out of Beta

Hints for today’s Connections: Sports Edition groups

Here are four hints for the groupings in today’s Connections: Sports Edition puzzle, ranked from the easiest yellow group to the tough (and sometimes bizarre) purple group.

Yellow group hint: Football division.

Green group hint: They catch the pigskin.

Blue group hint: College hoopsters.

Purple group hint: Where’s the glass slipper?