Organic LED and CMOS-based optogenetic stimulation probes with single-neuron resolution

https://medicalxpress.com/news/2023-09-cmos-based-optogenetic-probes-single-neuron-resolution.html

"precisely control brain cell activity using light to genetically modify neurons... CMOS drives 1K OLEDs and 4 <100um diameter needles... CMOS and OLEDs (on top) and CMOS (on botom) separated by metallic contact pads... thin protective layer on top of OLEDs... control in parallel numerous neurons, with high spatiotemporal resolution... scale number of light sources on implant into thousands and potentially many millions... activate individual neurons in brain regions as deep as 5mm... next: wafer-scale fabrication"