Under-Display sensors - Page 2

Canada-based OTI Lumionics developed innovative OLED materials and technologies. In August 2020 the company announced that it will start shipping its 2nd-gen ConducTorr Cathode Patterning Materials (CPM) by the end of 2020 to customers, which will use these to create OLED displays with under-the-display camera and face unlock technologies.

We had a short talk with the company's founder and CEO, Dr. Michael G. Helander, during which we discussed the company's technology, status and future plans.

BOE demonstrates several new OLED technologies at SID Displayweek 2021. First up is a new rollable display. The new display is 8-inch in size, and it features a resolution of 2592x2176 and a bending radius of 4 mm. BOE says the new display passed over 200,000 sliding cycles.

Last year at Displayweek 2020, BOE demonstrated a 12-inch rollable OLED. It has since been working with LG Electronics on the company's rollable smartphone (which was since canceled as LG withdrew from the smartphone market) and with OPPO on a 7.4-inch sliding OLED phone.

AU Optronics is demonstrating its new under-the-OLED fingerprint sensor, which it says is the world's largest size sensor at 2.9-inch.

A larger sensor is useful as it makes it easier for the user to sign-in, and it also enables support for multi-fingerprint identification for biometrics security. The sensor features high-resolution (1,000 PPI) suitable for detection of small child fingerprints and also includes a heart-rate sensor for added security.

Chinese OLED producer Visionox demonstrates several new OLED technologies at SID Displayweek 2021. We'll list some of these new achievements in this post, and you can see these in the video below.

Visionox shows a 'dynamic' 12.3-inch rollable display which feature a 5 mm rolling radius. A 7.92" foldable (2 mm radius) wrap-around display solution. Visionox also demonstrates a 12.3" three-folded OLED that can fold inwards (2.5 mm radius) or outwards (6.5 mm) - to become a 5.4-inch display.

China-based OLED maker Visionox reported good preliminary financial results for 2020, with increased sales and improved revenues and profits. The company expects its net profit to be around 141-210 million Yuan ($21-31 million USD), which will represent an increase of 120-227% over 2019.

The company says that its ability to innovate OLED technologies (specially the world's first OLED with an under-the-screen camera and the world's first 144Hz refresh rate OLED) enabled the company to increase its customer base and in 2020 it has added OPPO and Motorola as customers.

Germany-based trinamiX, a subsidiary of BASF, announced that it has developed an under-the-OLED 3D imaging sensor. This technology can enable high performance face authentication while working behind the display.

trinamiX's technology captures 2D images, 3D images and also performs what the company refers to as a "live skin" test that cannot be tricked by a full-face mask, a 2D image printout or even a 3D sculpture. The hardware consists of just a standard CMOS sensor and a near-infrared light projector.

Samsung Display is introducing a new OLED display technology, called "Samsung Blade Bezel" - which includes an under-the-display camera embedded within a laptop display. This enables reducing the bezels:

We have already seen similar technology from Visionox adopted in smartphones - but the performance is disappointing. A few months ago ZTE announced the first smartphone with an under-the-OLED camera - the The Axon 20 5G.

A couple of months ago ZTE announced the first smartphone with an under-the-OLED camera - the The Axon 20 5G. The phone is now shipping, and first reviews are quite dismal in terms of the quality of the selfie camera - and the effect on the screen.

YouTuber JerryRigEverything performed an interesting teardown of the Axon 20 5G, where he shows how the technology works - there's a small transparent OLED display right on top of the camera that is attached to the regular punch-hole display. The display in this phone is made by Visionox.

A couple of months ago ZTE announced the first smartphone with an under-the-OLED camera - the The Axon 20 5G. The phone is now shipping, and the first review is in, by The Verge.

The conclusion is rather dismal. The area in the screen under which the selfie camera resides is noticable - in fact the reviewer say that the "under-display integration is extremely noticeable on light backgrounds". You can see a square patch of the screen that exhibits a clear dithering effect. In fact the reviewer says that he'd prefer a notch-type display over what he gets in the Axon 20 5G.

ZTE announced the Axon 20 5G, the first smartphone with an under-the-OLED camera. The Axon 20 5G features a full-screen 6.92-inch 1080x2460 90Hz AMOLED display and will ship in a few days in China for around $320.

The Axon 20 5G also sports an under-the-display fingerprint sensor - and ZTE says that it includes an "under-the-OLED" sound, which could mean that the OLED acts as a speaker membrane (in a similar way to LG's Crystal Sound Technology), but it is not clear exactly.