We're one step closer to on-screen fingerprint scanners, CrucialTec obtains US patent


Biometric solution developer CrucialTec has obtained a patent for its on-screen fingerprint solution in the US, according to The Investor

The technology, dubbed DFS (display fingerprint solution), can enhance the touch sensitivity capabilities on a fixed part of a smartphone display panel, allowing it to scan fingerprints. 

All of the components included in the module are transparent, while the company also boasts that the production process is highly efficient, as manufacturing can be shared with an existing touch screen production line.

Although we usually advise that patents don't always translate into actual products, the case here is very different. CrucialTec has been developing this technology for years, and the latest report reveals that the firm will try to deploy these modules in wearable devices and smartphones as early as this year. A company official commented on the latest developments:


Said official also explained that the technology features three thin film transistors for each electrode which allows it to pick up high-resolution images. For comparison, current fingerprint scanners only have one. This setup allows the module to maximize sensibility while retaining a high level of transparency. 

Chinese manufacturers like Huawei and Oppo are expected to be among the first to adopt the technology, but many other big players are also likely to follow suit.

source: The Investor

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20 Comments

1. Landon

Posts: 1245; Member since: May 07, 2015

They need to incorporate this on the Note 8.

2. MrElectrifyer

Posts: 3960; Member since: Oct 21, 2014

Either this or at least Qualcomm's solution. Don't like the S8's fingerprint placement...

5. sgodsell

Posts: 7367; Member since: Mar 16, 2013

I am wondering if both CrucialTec and Qualcomms technologies are similar. I know Qualcomms uses ultrasound to read a fingerprint. But how does CrucialTec fingerprint work? Is it using ultrasound as well?

8. TechieXP1969

Posts: 14967; Member since: Sep 25, 2013

What is so bad about the S8 FPS placement? It's perfect /s Ok so you got spoiled with it being on the front. But how do you hold your phone? Dont you have a Gear S? You can connect phone to any BT device and have it as a "trusted device" so you don't even have to even use the FPS. I only use it for Samsung Pay because for now its required. One thing that is even better about the present S8 FPS vs the old one on pre-gen Galaxies, is using your FPS also turns on the display after unlocking. I don't want it under the screen if they cant work out the flaws.

11. Mixkhata1

Posts: 162; Member since: Feb 26, 2017

Man i respect that u like Samsung products but don't defend each and everything like ur life depends on it. P.S: i have an S7 edge and am using it to post here so no, i m not a Samsung hater

15. tedkord

Posts: 17357; Member since: Jun 17, 2009

It's a stupid design decision.

16. TerryD

Posts: 546; Member since: May 09, 2017

I've never tried a phone with a rear positioned fingerprint reader but I'd have thought that it was a bit awkward compared to the front. I can see from normal use your finger is around the right place and you'd soon adapt to find it every time pretty quickly. What would annoy me, is that half the time my phone is sat on a desk in front of me and I'd have to pick it up every time I need to check something on it.

18. Rocastle

Posts: 17; Member since: Mar 02, 2017

PErfect?. Even Samsung admit it was bad

3. piyath

Posts: 2445; Member since: Mar 23, 2012

iPhone 8 baby!!!!

4. peace247 unregistered

Keep dreaming

6. TechieXP1969

Posts: 14967; Member since: Sep 25, 2013

Why...It was already factually stated that Samsung wanted to put this in the S8, but the component had issues. Apple also wants too, and couldnt for the iPhone 8 (yet) for the same reason. However, both the Note 8 and iPhone 8 will have it, assuming they will work out the kinks. [Quote]A March 13th report out of Korea lays it all out lucidly. Samsung, working in collaboration with Synaptics, had initially hoped to build the fingerprint sensing tech directly into the screen itself. "Samsung poured resources into Synaptics’ fledgling technology last year but the results were frustrating," an informed source is quoted as saying. "With the production imminent, the company had to decide to relocate the fingerprint scanning home button to the back of the device at the last minute."[/Quote] [Quote]Arcuri said Apple is aiming to finalize its fingerprint sensor specification by May, but if its in-house AuthenTec-based solution is not feasible due to yield issues, mass production of the tentatively named "iPhone 8" could be delayed until September, compared to its usual late July to August timeframe. [/Quote]

7. TechieXP1969

Posts: 14967; Member since: Sep 25, 2013

Note 8 comes out a month before the iPhone baby!!!!!!!!!!!! And its gonna knock the socks off the iPhone 8. 6.3" of Infinity 4K Display...while the iPhone 8 might get QHD...lol But I hope both phones get this.

9. CanYouSeeTheLight

Posts: 1122; Member since: Jul 05, 2012

I can't see this being that great of a solution, a piece of glass between the LCD and digitizer/cover glass is going to bring reflections resulting in a screen that's harder to see in sunlight and it will retract the current printed on glass look of our screens. I'm wishing i'm wrong though and it can be integrated on the digitizer itself.

10. Mixkhata1

Posts: 162; Member since: Feb 26, 2017

I have a question: how would tempered glass work with in-screen fp scanner? If it won't then it's better to have it at back.

12. trojan_horse

Posts: 5868; Member since: May 06, 2016

Eagerly awaiting to see Synaptic's under-display fingerprint solution. I'm enjoying the competition real good!

13. pendragon0202

Posts: 164; Member since: Feb 23, 2015

CrucialTec is a Korean company. The CEO, Mr. Ahn was a former Samsung Engineer before he started his own company. They own 200 finger print sensor related patents and supplying to 16 global oems. His clients include most of major smart phone vendors except Samsung and Apple who source their finger print sensors from somewhere else or internally. There is a high chance it will be HTC or other Chinese vendors who will get this first DFS since he has great relationship with them, unless Samsung or Apple source from this company.

14. mcdanielvzw

Posts: 51; Member since: Nov 10, 2016

I like the placement of the fingerprint sensor, but I tend to hold my phone with my left and my left index finger rests right on the sensor naturally.

17. frydaexiii

Posts: 1476; Member since: Dec 01, 2011

Can't wait for Apple to buy this company and selfishly keep the technology to themselves as usual...yippie...

19. DonChoi

Posts: 35; Member since: Oct 21, 2014

On/In screen #fingerprint recognition is not easy to commercialize in a short time. When the in-display optical technology is applied, the display brightness becomes dark. The implementation at the bottom of the screen as an alternative, but also has the problem of difference the brightness between the bottom and top. It is necessary to improve visibility. Ultrasound technology that the sensing signal has a weak problem which is understood to be caused by the interference with the noise from the nearest in the display panel. Editor's comment: The existing Qualcomm pMUT ultrasound technology is also known to be permeable to about 400um, according to reverse engineering firm claims. An add-on film type capacitive technology difficult to penetrate Corning Gorilla 3/4/5 cover-5T, 550um thickness. The capacitance method is known to have a limit of 300~400um, but it is more difficult considering the cover and cover protective film. Colorless Polymid(CPI) made by Kolon Industries can be an alternative, but it will take time for the thickness to be less than 150um and to be mass-produced and widely adopted by manufacturers. An alternative is via near-infrared technology which can be non-touch technology if implemented as contactless. I know that the industry is interested in developing with touch technology. At present, known prototypes have not reached the perfection required by the manufacturer.

20. DonChoi

Posts: 35; Member since: Oct 21, 2014

At this time, I think that Crucialtec solution is suitable for applications such as smart watches, but the sapphire cover glass is not expected to be available.

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