Seoul Semiconductor’s ‘HV Opto-Semiconductor’ supplied to four global OEMs - Just Auto

Seoul Semiconductor has announced that its 'world’s first High Voltage (HV) opto-semiconductor technology' has entered mass production and is now supplied to four global automotive OEMs across the Ame... Read original →

Seoul Semiconductor’s HV opto-chip isn’t just an efficiency upgrade—it redefines automotive LED system architecture by collapsing voltage conversion into a monolithic multi-junction P-N stack. This forces upstream driver IC vendors to embed power management logic and pushes PCB designers toward ultra-thin, low-layer layouts. While currently outside U.S. export controls, any extension of its EUV-based 3nm process into high-voltage power devices could trigger scrutiny under the CHIPS Act. Japanese rivals like Rohm or Stanley Electric lack comparable integration depth and will likely pivot to color fidelity or thermal reliability instead. Within 18 months, as per-vehicle opto-content doubles to $200, Tier 1s face existential pressure to vertically integrate—Seoul is positioning itself not as a component supplier but as an electronic architecture gatekeeper for next-gen EVs.