INTERFACING TO THE DIGITAL MICROMIRROR DEVICE FOR HOME ENTERTAINMENT APPLICATIONS

摘要

The Digital Micromirror Device (DMD~(TM)) is a reflective light modulating MEMS device used as the heart for high quality digital projection systems. Traditionally, DMD's~(TM) have been used for conference room projectors, video walls, and large venue applications including digital cinema. In transitioning DMD~(TM) based products into the home theater market, a key challenge has been ensuring a reliable system interface to the DMD~(TM) for the life of the product, typically a minimum of 10 years. There are three primary interfaces to the DMD~(TM) in any projection display system: electrical, opto-mechanical, and thermal. Due to the optical nature and fcnctionality of the DMD~(TM), there are very unique design constraints that must be taken into account when developing solutions for these interfaces. An overview of the designs incorporated for each of the key interfaces in a home theater application is provided. The primary issues associated with these solutions as related to DMD~(TM) packaging and reliability are then identified. Finally, a discussion of the assessment testing performed for each of these cases is presented.