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Part Number: DLP470NE
Other Parts Discussed in Thread: DLP660TE, DLP470TE

I have been using BenQ’s new W1700, which uses what I presume to be the DLP470TP DMD.

I know this uses four flashes, as it were, of 1920 x 1080 to deliver the required pixel count of UHD, and test images show that it does so very well. Thrilling. 

The numbers are easy, but I can’t work out the geometry. There seem to be three possibilities:

1)      The DMD delivers 1920 x 1080 to four entirely separate quarters of the screen. But this seems a big shift for the micromirrors to make, and there’s no evidence of any joins in the middle.

2)      OR The pixels on the DMDs occupy only a quarter of the micromirror area, so they can be shifted half a mirror in each direction to deliver four adjacent pixels. Again easy to understand, though it would make the pixels very small – but perhaps that’s why the lumen output is limited to 1500?

3)      OR Full-miiror-size pixels are used, and they then overlap when shifted. But this would seem to require image processing of each frame to be able to deliver UHD accurately, as is achieved. (This is currently our favourite, since this might then also explain the impossible-to-visualise geometry of the two-flash 0.67” DLP660TE.)

Can you enlighten us? It may be some cunning solution beyond our poor Australian brains.

  • Hello Jez,

    Welcome to the DLP section of the TI-E2E forums.

    The DLP470TE uses a 1920x1080 array of micromirrors, which switch on the order of microseconds, to create four distinct addressable pixels on the screen during every frame to deliver full 4K UHD resolution.  Using the ultra-fast switching speed of the DMD, the DLP470TE uses just 2 million mirrors to display full 8 million pixel UHD images. The complete set of pixels are oversampled and processed by unique TI image processing algorithms leading to a crisp, colorful, & detailed full 8megapixel 4K UHD display.

    Click here to learn more about our 4K UHD products.



  • Dear Oscar, 

    Thanks so much for your reply. Do you know if the addressable pixel spaces on the screen overlap each other? (presumably requiring the image processing to predict the overlap effects)

    Or are the individual addressable pixel spaces entirely distinct, i.e. straightforward 2m pixels four times over?

    Best regards from sunny Sydney,


  • Hello Jez,

    I appreciate your interest in how our newest 4K UHD technology works, but the DLP image processing algorithms are proprietary and I'm afraid I can't go into any more detail. The DLP 0.47 4K UHD chipsets create more than 8 million addressable pixels on the screen, meaning each individual pixel is controllable on screen, delivering true 4k UHD resolution.