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Original question:

DLP471TE: 4K Resolution Inquiry

DLP471TE: Looking for 4K DMD at 120Hz

Links
Intellectual 2215 points
Part Number: DLP471TE
Other Parts Discussed in Thread: DLPC900, DLP500YX, DLPC3470, DLP2010LC

Hello.

I'm looking for a 4K DMD that runs at 120Hz (or at least more than 60Hz). I couldn't find one.

I downloaded the DLP_Products_Optical_Module_Search_Tool (an Excel spreadsheet), but it doesn't specify the refresh rate of the modules. And the ones that I could find by going to the corresponding websites, they all run at 60Hz.

If a 4K DMD at 120Hz doesn't exist, would it be possible to combine two 4K DMDs at 60Hz to get the same result?

Maybe by interlacing the frames of both displays, like shuffling a deck of cards. I'm guessing that by doing so the image would have some unwanted effect, since both images would overlap, probably causing the image to lose quality and definition.

I hope you can help me.

Thank you very much.

  • 0
    TI__Expert 3700 points

    Hello Jiahui,

    Thanks for looking at our devices and providing feedback.

    You are correct for the devices that are intended for Display applications. 

    For industrial and light control applications, we have devices that can run at higher pattern rates. For example, there is the DLP500YX 0.50 2048×1200 DMD device that is coupled with dual DLPC900 controllers. We do have additional devices that can run at higher 8-bit pattern rates than 120Hz, so it will really depend on your application and the requirements.

    If you would like, you can share more on the requirements, or, we can have a conversation offline.

    Regards,

    Matt 

  • 0 in reply to Matt Soucek
    TI__Intellectual 2215 points
    Hi Matt ,
    Thank you so much for your kind response.

    The application in this case would be a VR headset, so it would need to display a colored image. Can the devices used for light control display a colored image? As far as I understand it depends on the light source, right? (if it uses a color wheel, rgb lasers, etc).

    Just in case I'll rephrase my need: I need to build a high framerate display (72Hz or more, ideally 90Hz or more) for a VR headset, using Texas Instrument's tech. The image would be projected onto a surface located in front of the eyes (just like projecting a movie onto a screen), so it'd also need to be very short throw, between 7cm and 25cm (2.75in to 10in) (not sure if the modules you offer have the right lenses for this).

    Thank again.

    Best regards,
    William
  • 0 in reply to Links
    TI__Expert 3700 points

    Hi William,

    Thank you for the additional information.

    You are correct, the high-speed light control chipsets from TI can support color images. Now that you mention VR headsets, that helps define the size requirements. If you go to ti.com, and navigate to DLP products, and then High-Speed Visible chipsets, you will see a selection table of DMDs, controllers, PMICs, etc. As far as the DMDs are concerned, the smallest device I see is the DLP2010LC, which is under our Pico projection product line. It is coupled with the DLPC3470 controller and a PMIC (depends on the light output required).

    Please check out this chipset or similar ones online. The chipset I mentioned above would most likely be too big for your application, but again, you will have to compare and contrast the features and tradeoffs.

    Hope this info helps. Please let us know what else you might need.

    Thanks,

    Matt

  • +1 in reply to Matt Soucek
    TI__Expert 3700 points

    Hi William,

    Let us know if you have any further questions or feedback. For now, I will close this thread, but please feel free to reach out again.

    Thank you,

    Matt