Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

OLED microdisplays as high-precision optical fingerprint sensors

09.05.2017

Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP, a leading provider for research and development in the field of OLED-on-Silicon applications, presents a high-resolution fingerprint-sensor at SID Display Week 2017, from May 23-25 2017 in Los Angeles/USA at the German Pavilion, booth no. 623.

Fraunhofer FEP has been developing various application-specific OLED microdisplays based on OLED-on-silicon technology successfully for many years. This unique technology enables the high-precision integration of an OLED as light source on a microchip. Moreover this microchip can be designed with further sensor elements, e.g. photodiodes.


High-resolution OLED-on-silicon fingerprint sensor

© Fraunhofer FEP | Picture in printable resolution: www.fep.fraunhofer.de/press

By this, objects can be illuminated and at the same time the reflected light detected and analyzed. Such microdisplays can be integrated into interactive data eyeglasses as a “bi-directional microdisplay”: the tiny display projects the information for augmented-reality applications whereas the camera function detects the viewing direction– thus the content can be controlled by eye-movements.

The fingerprint sensor uses this bidirectional functionality of light-emission and –detection as well: the finger gets illuminated and the reflected light will be detected and analyzed.

Bernd Richter, deputy division manager for OLED microdisplays and sensors at Fraunhofer FEP explains: “We have used an extra-thin encapsulation for the chip of this fingerprint sensor. Thereby the distance between finger and image sensor has been minimized and the fingerprint can be captured excellently. Thus, an additional imaging optics is not necessary for this application.”

The first prototype has a native resolution of 1600 dpi – this is three times more than typically required by the FBI. This high spatial resolution enables the identification even of smallest sweat pores beside the typical papillary lines, which can be used to increase the security.

One of the most promising applications of this new kind of sensor is the user verification in mobile devices. Because of the particularly high resolution in comparison to the typically used capacitive fingerprint sensors these devices are much less vulnerable to so-called spoofing (the manipulation by “false fingers”).

Another nice side effect is the opportunity for using the active area as a normal display e.g. for branding, displaying logos or notifications.

Fraunhofer FEP at SID Display Week 2017

Symposium
Friday, May 26, 2017 / 10:40 am – 12:00 pm / room 515 a
Session 77: OLED Displays II (OLEDs)

Invited Paper:
Ultra-Low Power OLED Microdisplay for Extended Battery Life in Near-to-Eye Displays
Dr. Uwe Vogel, Fraunhofer FEP, Dresden, Germany

Poster Session
Thursday, May 25, 2017 / 05:00 – 8:00 pm / Petree Hall
P.175: Direct Electron-Beam Micropatterning and Thermal Annealing of OLED Devices
Elisabeth Bodenstein, Fraunhofer FEP, Dresden, Germany

Exhibitor-Forum
Thursday, May 25, 2017, West halls AB
Session F8: OLEDs (09:15 – 10:15 am)

F8.2: OLED Microdisplay with Embedded Optical Fingerprint Sensor
Peter König, Fraunhofer FEP, Dresden, Germany

F8.3: OLED Micropatterning by Electron Beam Ablation
Elisabeth Bodenstein, Fraunhofer FEP, Dresden, Germany

Press contact:

Mrs. Annett Arnold

Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP
Phone +49 351 2586 452 | annett.arnold@fep.fraunhofer.de
Winterbergstraße 28 | 01277 Dresden | Germany | www.fep.fraunhofer.de

Weitere Informationen:

http://s.fhg.de/LAZ

Annett Arnold | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP

More articles from Trade Fair News:

nachricht Start to the year for medical exhibitions: international high-tech companies meet at MD&M West
17.01.2019 | IVAM Fachverband für Mikrotechnik

nachricht Innovative Infrared heat reduces energy consumption in coating packaging for food
12.12.2018 | Heraeus Noblelight GmbH

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Bifacial Stem Cells Produce Wood and Bast

Heidelberg researchers study one of the most important growth processes on Earth

So-called bifacial stem cells are responsible for one of the most critical growth processes on Earth – the formation of wood.

Im Focus: Energizing the immune system to eat cancer

Abramson Cancer Center study identifies method of priming macrophages to boost anti-tumor response

Immune cells called macrophages are supposed to serve and protect, but cancer has found ways to put them to sleep. Now researchers at the Abramson Cancer...

Im Focus: Ten-year anniversary of the Neumayer Station III

The scientific and political community alike stress the importance of German Antarctic research

Joint Press Release from the BMBF and AWI

The Antarctic is a frigid continent south of the Antarctic Circle, where researchers are the only inhabitants. Despite the hostile conditions, here the Alfred...

Im Focus: Ultra ultrasound to transform new tech

World first experiments on sensor that may revolutionise everything from medical devices to unmanned vehicles

The new sensor - capable of detecting vibrations of living cells - may revolutionise everything from medical devices to unmanned vehicles.

Im Focus: Flying Optical Cats for Quantum Communication

Dead and alive at the same time? Researchers at the Max Planck Institute of Quantum Optics have implemented Erwin Schrödinger’s paradoxical gedanken experiment employing an entangled atom-light state.

In 1935 Erwin Schrödinger formulated a thought experiment designed to capture the paradoxical nature of quantum physics. The crucial element of this gedanken...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Our digital society in 2040

16.01.2019 | Event News

11th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Aachen, 3-4 April 2019

14.01.2019 | Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

 
Latest News

How our cellular antennas are formed

22.01.2019 | Life Sciences

Proposed engineering method could help make buildings and bridges safer

22.01.2019 | Architecture and Construction

Bifacial Stem Cells Produce Wood and Bast

22.01.2019 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>