San Francisco, US – December 15, 2008 – At today’s IEEE International Electron Devices Meeting, IMEC presents a monolithically integrated 11 megapixel micro-mirror array for high-end industrial applications, a world’s first both in terms of pixel density and reliability. Each mirror in the array is 8μm x 8μm and can be individually tilted by the high-speed integrated CMOS circuitry underneath the array. This device fits in IMEC’s CMORE initiative, which offers cost-effective solutions for continued system scaling, not by shrinking CMOS but by focusing on monolithic co-integration of heterogeneous technology.
IMEC’s 10cm² 11 megapixel mirror array has a pixel density that is almost double that of comparable state-of-the-art micro-mirrors. And IMEC has demonstrated that its mirrors show no creep and meet a 10¹² cycles mechanical lifetime. Integrated micro-mirror arrays such as this one, are used in, for example, video projection or lithography mask writers.
IMEC fabricated the 8µm mirrors on top of foundry high-voltage 0.18µm CMOS 200mm wafers with 6 interconnect levels. The array was built using IMEC’s proprietary SiGe-based MEMS platform, meeting the mirror’s mechanical reliability requirements, device flatness, and compatibility with high-speed CMOS. Poly-SiGe was chosen as structural material for the mirrors, instead of Al. Poly-SiGe solves many of the reliability issues of Al-based mirrors, and it is compatible with above CMOS processing, allowing a smooth integration with the CMOS chip below.
IMEC’s CMORE initiative offers cost-effective solutions for monolithic co-integration of heterogeneous technologies. The services offered range from development-on-demand, over prototyping, to low-volume production. These services profit from the expertise in many research areas available at IMEC. The CMORE solutions are implemented in IMEC’s 200mm fab with advanced packaging capabilities, such as 3D integration. The two process platforms involved are a 0.13µm CMOS process and a versatile SiGe above-IC MEMS process. On customer demand, the CMORE solution can be migrated to IMEC’s 300mm fab.
總的來說，就是IMEC利用CMOS製程製作出MIRROR，每個MIRROR大約為8μm x 8μm，其中利用多晶矽鍺可以提升元件的可靠度
FROM HERE
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