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.
The inside story of how ChatGPT was built from the people who made it
Exclusive conversations that take us behind the scenes of a cultural phenomenon.
How Rust went from a side project to the world’s most-loved programming language
For decades, coders wrote critical systems in C and C++. Now they turn to Rust.
Design thinking was supposed to fix the world. Where did it go wrong?
An approach that promised to democratize design may have done the opposite.
Sam Altman invested $180 million into a company trying to delay death
Can anti-aging breakthroughs add 10 healthy years to the human life span? The CEO of OpenAI is paying to find out.
Get the latest updates from
MIT Technology Review
Discover special offers, top stories, upcoming events, and more.