LCOS has many types. It seems that each manufacturer has their own version. One of the most popular is from JVC. It is known as D-ILA. JVC D ILA is a must for any videophile. LCOS technology hasn't taken off mainly because of the price. The price is effected directly by the fact that LCOS projectors tend to be on the higher end of the resolution spectrum.
LCOS projectors are also a bit larger in physical size typically. Price and size are about the only disadvantages, however. Pixels are super smooth. The display is very liquid in comparison to both LCD and DLP. LCOS uses the best of both worlds to produce a much higher quality picture.
So if you are in the market for a high quality projector for you home theater, do youself a huge favor and make sure it is an LCOS projector. You won't be sorry.
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