Monolithic all-GaN 2T1C-μLED–photodetector integration - Semiconductor Today

Researchers at Shandong University in China have demonstrated monolithic integration of all-gallium nitride (GaN) 2T1C (two transistors, one capacitor) micro-light-emitting diode (μLED) and photodetec... Read original →

Shandong University’s monolithic all-GaN 2T1C μLED–PD integration triggers a cascade across display, sensing, and optical comms stacks. Upstream MOCVD and ICP etching tools will face tighter specs, while downstream wearables can eliminate bulky optics, slashing BOM costs. Compliance-wise, bypassing silicon TFTs sidesteps thermal-mismatch issues and some Western material export controls—but reliance on EUV for sub-5nm features remains vulnerable under Wassenaar restrictions. Competitors like Sony, Apple, and AUO (Taiwan, China) will likely fast-track GaN-on-GaN R&D to avoid generational gaps in AR/VR. Within 18 months, this architecture will push visible light communication into consumer device front-loading, forcing driver IC vendors to redesign modulation schemes: displays evolve from output panels to bidirectional optical interfaces.