Foldable phone screens could use diamond glass, says Gorilla Glass rival

A foldable phone display screen constructed from glass is simply a matter of time.

Andrew Hoyle/CNET

Foldable phones have nailed a whole lot of {hardware} and software program achievements, however there’s one aspect that device-makers have not cracked: bendable glass. Today’s foldable telephones use a plastic materials to cowl the fragile, versatile digital show. But what if these screens had been coated in ultrahard diamond mud?

That won’t be as loopy because it sounds. One firm I spoke with final week at CES thinks it is discovered a strategy to make ultralight super-hard glass for foldable gadgets utilizing diamond glass.

Bendable glass is the holy grail of foldable phone design. So far, plastic screens have been extra susceptible to break from informal scrapes than exhausting glass. Without a protecting materials, the phone’s inner workings are vulnerable to breaking from strain, water, mud and sharp objects. Samsung bore the brunt of this actuality when its Galaxy Fold sustained several types of screen damage earlier than the phone formally went on sale. 

With their excessive costs and untested designs, foldable telephones are a tricky promote as is. A robust cowl materials to guard towards drops and scratches might assist shift foldable telephones from costly curiosities to critical merchandise that might in the future change your conventional shingle-shaped phone.

Motorola Razr Foldable Flip phone

Foldable telephones just like the Motorola Razr use plastic screens and reveal a crease on the bend. 

James Martin/CNET

Gorilla Glass-maker Corning confirmed CNET glass that’s thin enough to fold without breaking, however it’s nonetheless in growth and is not commercially accessible. If it had been, we would see much more foldable telephones immediately. Without a prepared provide of glass skinny sufficient to fold in half and robust sufficient to not crack, splinter or break, device-makers have had to decide on whether or not to attend for a brand new materials or work with what they’ve.

Enter Miraj Diamond Glass, a cloth constructed from lab-manufactured nano-diamond supplies. It’s sprayed onto a floor in a layer that measures simply 100 nanometers, or 1/10,000 the thickness of a strand of hair. Diamond glass can coat both a plastic (polymer) sheet or a slip of untreated bendable glass. It’s exhausting, the corporate says, and will likely be utterly foldable.

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The bendable glass that’s shaping as much as cowl foldable…


“Nano-diamond is actually semi-flexible by itself, and we can coat flexible glass,” mentioned Adam Khan, founder and CEO of Akhan Semiconductor, which is creating Miraj Diamond Glass. 

“It’s a conformable coating, so you won’t lose any of that foldability. Things that we’ve heard from the OEMs are that they would actually like it because the [typical] glass as it is isn’t strong enough in a foldable context, so this should really go toward strengthening that structure,” he added.

Diamond versus plastic: Is all of it it is cracked as much as be?

Apart from being one of many strongest substances on Earth — diamond glass reportedly withstood lasers in a recent demo with Lockheed — diamond crystal won’t undergo the identical unpleasant display screen creasing that seems the place the Galaxy Fold, Huawei Mate X and Motorola Razr screens bend in half.

Khan mentioned that Miraj Diamond Glass might additionally coat a foldable phone’s chassis, so producers might not want to make use of heavy, cumbersome metal reinforcements inside the gadget to assist a superthin display screen on prime. The diamond glass can instantly coat the ceramic. 


Miraj Diamond Glass appears like common glass, however it’s treaded with a nano-coating of diamond crystal.

Akhan Semiconductor

The materials additionally repels water and floor oils with no need an extra oleophobic coating typical of phone supplies like Gorilla Glass, Khan mentioned. In addition, diamond glass dissipates warmth to maintain phones working cooler, which in flip might extend the battery life of gadgets that use this substance.

Here’s the clincher: Khan says his firm will not cost extra for a diamond glass therapy than Corning would for Gorilla Glass. Khan did not reveal pricing and Corning didn’t reply to a request for remark.

Still, there could also be motive for some phone-makers to choose plastic over glass. Naysayers level out that diamond glass and sapphire crystal, one other substance that is been recognized to cowl iPhone digital camera lenses, is likely to be robust, however could also be more brittle than Corning’s chemically strengthened Gorilla Glass.

Plastic will also be handled, just like the exhausting coating Motorola selected for its foldable Motorola Razr.

“When glass fails, it shatters. When plastic fails, it scratches,” mentioned Tom Gitzinger, director and principal engineer of innovation and structure for Motorola, after I went to see the Motorola Razr in Chicago forward of its official November launch. 

Motorola gained expertise working with a hardened plastic topcoat for its Shattershield cowl materials on earlier Motorola Droid telephones, like 2017’s Moto Z2 Force, which tore, but didn’t break, after I dropped it 28 times.

Diamond glass in 2021, however have not we heard this one earlier than?

This shouldn’t be the primary time I’ve sat throughout from Khan in a nondescript Las Vegas resort room. CES 2017 was my first introduction to Miraj Diamond Glass. Three years in the past, a assured Khan promised that we would see a phone protected by diamond glass by the end of that year. At CES 2018, he pushed the goalposts again to the tip of 2019, however averred there was an exclusive phone-maker on board.

Now, on the daybreak of 2020, Khan and I met once more nose to nose. Perhaps somewhat extra salt streaked his unfastened black hair, maybe his voice was somewhat quieter within the stillness of the in any other case unused room. But Khan’s cheery confidence remained.

I needed to ask, what occurred to these guarantees? Is diamond glass actual, and what in regards to the utility with foldable telephones? 

The holdup was two-fold, he mentioned. The high quality wasn’t fairly there, which despatched the corporate again to fine-tune the product. Then the unique partnership fell via.

“There’s been some changes in the OEM world and certain partners we were moving to be with are no longer — they were in the space and then they dropped out, so we haven’t picked on to cross the line yet, but we’re still working with the vast majority of the OEMs,” Khan mentioned. 

Producing sufficient diamond glass to cowl a big quantity of telephones can be a problem, however one Khan thinks he is discovered a means across the difficulty by working with a glass substrate, or sub-layer, that an OEM has already ordered — as a substitute of making an attempt to coat a smaller subset of glass or plastic panels in-house.

You cannot order 100, you order thousands and thousands,” he mentioned.

As for foldable diamond glass, the corporate continues to be a methods away. Miraj Diamond Glass will not be prepared for a versatile glass demonstration till the subsequent technology.

So even when Akhan Semiconductors does safe an unique phone companion by the tip of 2020, and even when we do not see that phone till 2021, a diamond glass display screen on a foldable phone might nonetheless path versatile glass by years. Even so, it would be a superb take a look at of energy that I, for one, am raring to see.

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