New applications for multicolored OLED micro-displays

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Scientists at the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP have succeeded in realizing a multi-color OLED micro-display that consumes the lowest power of all micro-displays available with a wide application range compared to monochrome displays. . This OLED micro-display was produced as part of the “Backplane” project funded by the Saxon State Ministry of Economy, Labor and Transport (SMWA, funding reference: 100392259). It will be presented at CES, January 5-8, 2022, in Las Vegas / USA, at the Joint Organic Electronics Association (OE-A) booth, # 51139, at the Venetian Expo Center.

Wearables have become extremely popular. Used as fitness bracelets, they measure body values ​​during sports. In industry, you no longer need bulky manuals. Instead, the data is displayed directly through smart glasses. Bicycle navigation is barely visible in the form of a small system that sits directly in front of the eye and guides us where we want to go. Of course, these systems need to consume very little power, as you don’t want to get off your bike and charge it in between.

The ultra-low power consumption micro-display platform for portable devices, available from Fraunhofer FEP, is therefore designed for extremely low power consumption and is based on the proven silicon OLED technology. These OLED micro-displays were previously only available in monochrome, which was initially sufficient for simple information displays. In order to expand the range of applications, a multi-color OLED micro-display has now been researched in the “Backplane” project, which can display the color space of green, red and their mixed colors, while requiring less energy than all other micro-screens.

“We can now offer ultra low power OLED micro-displays that not only display simple information in yellow, but also transmit additional information in red and green signal colors, for example as a warning display in headsets. firefighters or for professional divers ”, explains Philipp Wartenberg, Head of IC and System Design Department at Fraunhofer FEP. “Presenting sensor data can also be fast and vivid. For example, a welder can always follow the thermal image at a weld bead, or a nurse in protective gear with built-in sensors can immediately see if the patient has a higher temperature. Visualization of heat the differences were not possible with the ultra-low consumption micro-screens that were offered previously. “

Wartenberg and his colleagues have created an innovative display concept that enables multi-color and higher data rates by reducing the pixel size to half, is also extremely energy efficient, and is manufactured with the CMOS technology used so far.

Scientists are now eager to discuss the possibilities of the new generation of displays with industrial customers and adapt them to their needs. The tiny ultra-low power OLED micro-displays enable extremely compact systems.

In collaboration with GLOBALFOUNDRIES Dresden, Module One LLC & Co. KG and digades GmbH, Fraunhofer FEP is currently researching a solution for low power and high resolution OLED micro-displays and quality cameras. The goal is an ultra-low-power micro-display backplane architecture in a deep submicron CMOS process, significantly reducing the previously predominant area required by memory components for Static RAM (SRAM).

the Fraunhofer Institute for Organic Electronics, Electron Beam Technology and FEP Plasma works on innovative solutions in the fields of vacuum coating, surface treatment as well as organic semiconductors. Core competencies in electron beam technologies, roll-to-roll technology, large area and precision plasma activated coating as well as technologies for organic electronics and integrated circuit design form the basis of these activities. Thus, Fraunhofer FEP offers a wide range of possibilities for research, development and pilot production, in particular for the treatment, sterilization, structuring and refining of surfaces as well as OLED micro-screens, sensors, optical filters. and flexible OLED lights. Our goal is to seize the innovative potential of the electron beam, plasma technology and organic electronics for new production processes and devices and make it available to our customers.


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