What a DMD chip looks like in operation | DLP projector teardown 

That's a Digital Micromirror Device. A thing I always wanted to see, but never found a projector which was broken enough to be in the trash but yet still working enough to produce an image - until now.
Some other good videos on DLP/DMD:
ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-w1mE2j1axIo.html
ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-N4aUU3-PKQ4.html
ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-9nb8mM3uEIc.html

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