Iridescent Displays
Workers in Qualcomm’s factory in Hsinchu City, Taiwan, operate the same kind of equipment found in other display-making factories on the island, which are the source of more than a third of the LCD panels in new computers, tablets, and smart phones. Yet displays from this plant are like no others. They create color images by borrowing an optical trick at work in the iridescent wings of some butterflies. Each pixel in the new Mirasol display is made from microscopic structures that function like imperfect mirrors, reflecting back incoming light but altering its color. Full-color images can be created even in direct sunlight.
Since these displays use reflected light rather than emitting their own as conventional displays do, they consume far less energy than LCD displays. Yet unlike other low-power displays, such as the one in Amazon’s black-and-white Kindle e-reader, these render full-color images and can refresh quickly enough to show video.
The color isn’t yet as rich as that of a conventional LCD, but because the display consumes so much less energy, devices that use it can last longer between charges. “If you use one in a similar way to a Kindle, you should expect weeks of battery life,” says Clarence Chui, who leads Qualcomm’s Mirasol division. The technology could also lead to slimmer devices, since designers can use smaller batteries.
Qualcomm is starting with 5.3-inch displays for e-reader devices that are now on sale in South Korea and China. Later this year it will open a second, much larger Mirasol factory in Taiwan, which will have enough capacity to supply some of the world’s biggest mobile-device manufacturers. Chui says that the plant will be able to make Mirasol displays in sizes suited to a variety of devices, including smart phones and full-size tablets.
Keep Reading
Most Popular
Large language models can do jaw-dropping things. But nobody knows exactly why.
And that's a problem. Figuring it out is one of the biggest scientific puzzles of our time and a crucial step towards controlling more powerful future models.
How scientists traced a mysterious covid case back to six toilets
When wastewater surveillance turns into a hunt for a single infected individual, the ethics get tricky.
The problem with plug-in hybrids? Their drivers.
Plug-in hybrids are often sold as a transition to EVs, but new data from Europe shows we’re still underestimating the emissions they produce.
Google DeepMind’s new generative model makes Super Mario–like games from scratch
Genie learns how to control games by watching hours and hours of video. It could help train next-gen robots too.
Stay connected
Get the latest updates from
MIT Technology Review
Discover special offers, top stories, upcoming events, and more.