Stretchy OLED technology could pave way for new smart fabrics, wearables, even tablets

It's cool research, but still research.

Researchers at Michigan State University have developed a printable OLED circuit within a stretchable material, potentially paving the way for smart fabrics or truly foldable displays.

Chuan Wang, assistant professor of electrical and computer engineering at MSU, is credited with the development of the OLED fabric, which flexes and stretches. If it can be commercialized, designers could take the techniology in several directions, including phones or tablets whose displays could be “stretched,” as well as the development of smart fabrics for banners, clothes, or other uses. 

Right now, Wang and his team have created the elastic material, the circuit, and the organic light-emitting diode, or OLED. The next step is to combine those elements into a working pixel, the foundation for a flexible display. That process will probably take one to two years.

In the meantime, Wang said that he and his team are currently working on actual stretchable OLEDs and displays. “We will have another paper out soon” on that topic, he said in an email.

Why this matters: It’s not really clear whether consumers have embraced curved TVs. But flexible displays are one of those technologies with a large number of potential uses: smartphones, tablets, wearables with a greater degree of flexibility. Of course, this is still in the research stage, and important questions about whether the tech can be manufactured at scale and cost-effectively still need to be answered. Nevertheless, its a cool concept.

msus stretchable fabric stretched Kurt Stepnitz / Michigan State University

MSU engineer Chuan Wang and colleagues have created a stretchable light-emitting material that is produced entirely on an inkjet printer. 

What’s inside the stretchy displays

In addition to simply being stretchable, Wang’s material can be printed with an ordinary inkjet printer, helping to keep manufacturing costs down. It’s a composite of several materials fabricated from nanomaterials and organic compounds, MSU said. The compounds are dissolved in solution to produce different electronic inks which can be placed inside of an inkjet printer and “printed” to form the stretchable circuits.

It's an important development for a display industry that has long chased the idea of curved, bendable, and even foldable displays. Curved televisions and PC monitors are now being sold, but they are nevertheless static shapes; same goes for the curved display on Samsung’s Galaxy Edge smartphones. Displays that can actually be bent or deformed while playing back video may be the next step, similar to those demonstrated by Japan’s Semiconductor Energy Laboratory in 2014. 

The drawback of the Japan SEL’s demonstration, however, was that the display technology could only be moderately reshaped, much like ripples moving through water. Instead, smartphone makers appear to be more interested in next-generation “foldable” or “creaseable” displays, which can be radically transformed to save space.

So far, those attemps have had mixed success. In 2010 Sony demonstrated a prototype that could be rolled around a pencil, though it apparently never panned out. Samsung’s display business also published a 2011 paper on folding displays. In addition, Samsung as well as Microsoft have published similar patents that call for smartphones built upon displays that could be folded back upon themselves.

MSU’s technology appears to be a bit different. According to Wang, Samsung’s foldable OLED was still built upon inelastic materials, whereas his team’s work isn’t. MSU and Wang said that his smart fabric, which is stretchable, could be folded and placed in a pocket without breaking. But the display itself could also be stretched if needed, taking the notion of flexible displays in an entirely new direction.

“Our reported stretchable ICs are made entirely using elastic materials, therefore they are certainly foldable,” Wang said in an email. “The strain it can withstand (up to 100 percent) way exceeds the requirement for folding.”

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection

Tags research

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Mark Hachman

PC World (US online)
Show Comments

Cool Tech

Breitling Superocean Heritage Chronographe 44

Learn more >

SanDisk MicroSDXC™ for Nintendo® Switch™

Learn more >

Toys for Boys

Family Friendly

Panasonic 4K UHD Blu-Ray Player and Full HD Recorder with Netflix - UBT1GL-K

Learn more >

Stocking Stuffer

Razer DeathAdder Expert Ergonomic Gaming Mouse

Learn more >

Christmas Gift Guide

Click for more ›

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?