Originally Posted by hemants
How can one technology produce better Blacks than another unless the 'inferior' technology is shining light on the screen when it's not supposed to?
That's exactly what's happening. All projection technology is flawed. There is a light source that is always shining, and the imaging device (LCD, LCoS, DLP chip) must block light any time anything other than white is to be shown. None of the technologies are perfect, and all allow some light through, even when everything is "off" to "produce" black. JVCs LCoS (DiLA) imaging devices and light engine are better than anyone else at blocking light that isn't meant to hit the screen so they produce the best blacks.
The only projection machines that can actually do black, are the LED DLPs, these can be configured to actually turn off the LEDs for a black screen, thus no light is output, thus black is perfect, however this only works for full black frames and has side effects since the LEDs must be on if there is even on pixel that is not absolutely black, most people who have tried it have said it's not worth the tradeoffs.