In the past decades, glass substrates with emission layers built on top were widely used in all kinds of display devices. Silicon chips played the traditional role as “driver ICs” to control LCD and OLED display panels. For emerging micro display technology in Metaverse applications, Silicon chips are further adopted to provide higher pixel resolution for better user experience. Emission layers on Si substrates (so called “Si-based micro display”) becomes popular for XR applications in Metaverse. There are several approaches to integrate multiple functions of chips within a Metaverse micro display. Pioneer system companies and panel companies work closely with Si foundries to develop high quality, reliable and cost-effective products. Of course, there are still several challenges in system integration and Si technology itself. In this presentation, we will share our thoughts about the role of Si technology in Metaverse micro display applications from a foundry perspective.