Samsung has been developing flexible displays for years and its latest innovation is stretchable PPG heart rate sensors in combination with OLED display systems. This electronic skin is worn on the inner wrist near the radial artery, and during the tests the OLED display was stable even after 1,000 stretches. For accuracy, the measurements the sensor takes from a moving wrist have been found to pick up a heartbeat signal that is 2.4 times stronger than that from a stationary silicon sensor. Read More
The main problem with stretch display technology is that the device breaks or it performs poorly. However, the researchers found a workaround for this problem by allowing all materials and elements, including the substrate, electrode, thin film transistor, emissive material layer, and sensor, to stretch and maintain their electrical properties. How? They replaced the plastic material used in existing stretchable displays with elastomers.
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The strength of this technology is that you can measure your biometric data over a longer period of time without having to remove the solution while sleeping or exercising, as the patch feels like part of your skin. You can also check your biometric data instantly on the screen without having to transfer it to an external device. The technology can also be extended to use in wearable health products for adults, children and infants, as well as patients with certain diseases, ”said lead researcher Youngjun Yun, correspondent author of the paper.