How foldable phone screens made of diamond crystal could fix key flaws

A foldable phone display screen created from glass is barely a matter of time.

Angela Lang/CNET

If there’s one aspect of Foldable phones that device-makers have not cracked, it is making a display screen out of bendable glass. Or extra particularly, methods to hold the fragile, versatile digital show beneath the floor secure from stress, water, mud and sharp objects. One firm I spoke with final week at CES thinks it is discovered the reply: diamond glass.

“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.

Miraj Diamond Glass is a cloth created 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 arduous, the corporate says, and will likely be fully foldable. It’s a part of the household of elements referred to as cowl supplies, which is the top-most layer of your phone “screen” that you just contact to navigate and sort.

Todays telephones use plastic cowl supplies, however bendable glass is the holy grail of foldable phone design due to its skill to repel the injury from informal scrapes sustained by polymer. Without a inflexible prime layer, the phone’s inside workings are inclined to breaking. 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.

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

With their excessive costs and untested designs, foldable telephones are a troublesome promote as is. A powerful cowl materials to guard in opposition to drops and scratches may assist shift foldable telephones from costly curiosities to critical merchandise that would someday substitute your conventional shingle-shaped phone.

Akhan Semiconductor is not the one firm working towards a stronger materials for foldable telephones. Gorilla Glass-maker Corning confirmed CNET glass that’s thin enough to fold without breaking, nevertheless it’s nonetheless in growth and is not commercially obtainable. 

If it have been, we might see much more foldable telephones as we speak. Without a prepared provide of glass skinny sufficient to fold in half and powerful 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.

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


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 ugly display screen creasing that seems the place the Galaxy Fold, Huawei Mate X and Motorola Razr screens bend in half.

“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,” Khan mentioned.

Miraj Diamond Glass can be designed to coat a foldable phone’s chassis, so producers might not want to make use of heavy, cumbersome metal reinforcements throughout the machine to help a superthin display screen on prime. 


Miraj Diamond Glass seems to be like common glass, nevertheless it’s treaded with a nano-coating of diamond crystal.

Akhan Semiconductor

The materials additionally repels water and floor oils while not having 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 may extend the battery life of units that use this substance.

Here’s the clincher: Khan says his firm will not cost extra for a diamond glass remedy 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 purpose for some phone-makers to select plastic over glass. Naysayers level out that diamond glass and sapphire crystal, one other substance that is been recognized to cowl iPhone digicam lenses, could be sturdy, however could also be more brittle than Corning’s chemically strengthened Gorilla Glass.

Plastic will also be handled, just like the arduous 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, once 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 will not be the primary time I’ve sat throughout from Khan in a nondescript Las Vegas lodge 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 head to head. Perhaps a bit extra salt streaked his unfastened black hair, maybe his voice was a bit 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 concerning 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 by means of.

“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 manner across the problem by working with a glass substrate, or sub-layer, that an OEM has already ordered — as an alternative of attempting 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 era.

So even when Akhan Semiconductors does safe an unique phone associate 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 may nonetheless path versatile glass by years. Even so, it might be an excellent check of power that I, for one, am raring to see.

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Tarun Banerjee

Professional Web Designer & Developer,Expert in SEO & Digital Market, Founder of Tech Hunt.

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