Easier to integrate
The key to the display’s performance lies inside. A specialized control circuit regulates the current and voltage supplied to each individual pixel. It operates at relatively high voltages, allowing multiple OLED layers to be stacked on top of each other. The result is a particularly bright image – crucial for applications such as augmented reality glasses, where digital content must remain visible against the real-world background.
“In addition to enabling a wide dynamic range for pixel control, the display can be driven via an integrated LVDS interface, which reduces the number of required connections,” explains Philipp Wartenberg, Head of IC & System Design at Fraunhofer IPMS. An LVDS interface is a fast, low-noise data connection. According to Wartenberg, frame rates of up to 120 frames per second are possible. The entire module requires only a single power supply, as it generates all necessary voltages internally. This simplifies integration into existing devices and could benefit manufacturers of data glasses, medical systems, and other compact optical technologies.