Isn't QD-OLED perfect for backlight strobing?
Posted: 13 Jul 2022, 02:44
I've been reading a lot about backlight strobing and learned that OLED's strobing capabilities are mainly held back by it's low brightness and this is because of Talbot Plateu's law. Talbot Plateu's law from what I understand means that you loose brightness proportional to gains in motion clarity (reduction in MPRT) while backlight strobing.
The typical RGB AND WRGB OLED displays tend to struggle with brightness, so you either end up with disappointingly high MPRT while strobing or an image that's simply too dim to be usable. But QD-OLED's impressive brightness should be able to overcome this limitation while being less prone to burn in, as its emitters require less voltage to drive the same level of brightness.
Currently the LG C2 pushes 178 nits sustained brightness on SDR with 100% white window while the AW3423DW on HDR 1000 can push 290 nits sustained brightness on a 100% white window (source: RTINGS). The reason I chose SDR for the C2 and HDR 1000 for the AW3423DW is because those give the highest sustained brightness on 100% white window (best full screen brightness in worst case scenario).
Let's compare that brightness with the ViewSonic XG2431's, which is Blur Busters 2.0 approved. The XG2431 hits 343 nits sustained brightness on a 100% white window. With HDR, the XG2431 hits 499 nits sustained brightness on a 100% white window but iirc, you can't use backlight strobing with HDR on that monitor for some reason. So, the AW3423DW only looses by about 50 nits and I believe that the gap can be closed.
We know that the AW3423DW beats the LG C2 handily in 100% screen brightness and Dell is willing to provide a 3 year warranty for burn in. LG doesn't even offer warranty for burn in on their C series of OLEDs. This suggests that QD-OLED's brightness is being held back and can probably be pushed even further. If you slap a heatsink on the 34 inch QD-OLED panel, I think brightness can be pushed to 400 or even 500+ nits sustained on 100% white window, and maybe with backlight strobing turned on, more brightness can be pushed as I think backlight strobing should reduce the wear of the OLED pixels as they'll be off more often giving them more time to rest (correct me if I'm wrong on this).
But what would the advantages of strobing a QD-OLED display over LCD's? One is the faster GtG time, I've read that in order to make the ViewSonic XG2431's crosstalk almost disappear, you'd have to run it at 120Hz. This is because at lower refresh rates, the GtG pixel response time can be hidden between refresh rate cycles. But QD-OLED has almost instantaneous pixel response times, so there's no need to reduce your refresh rate to hide the GtG pixel response time between refresh cycles. So with the right tuning, it should be able to make crosstalk disappear at its maximum refresh rat.
Speaking of tuning, I believe that a QD-OLED display would require less of it to receive the Blur Busters 2.0 certification. This is because the AW3423DW doesn't have any overdrive settings and as mentioned before, this is thanks to GtG pixel response times not being an issue. According to Rtings the AW3423DW does have a bit of overshoot when going from pure black from another shade, but I think that can be resolved with tuning.
My dream monitor would be one that utilizes Samsung display's 34 inch QD-OLED panel from a brand like ViewSonic or BenQ which supports the BlurBusters strobing utility and receives the Blurbusters 2.0 certification.
I'd consider myself a noob when it comes to my understanding of backlight strobing so my apologies if I made any mistakes or errors in this post. I wanted to start this discussion as I haven't seen anyone else discuss the strobing potential of QD-OLED displays. I was really disappointed to find out that the AW3423DW doesn't have backlight strobing, so I hope that other monitor companies can consider adding this feature once they get a hold of this panel .
The typical RGB AND WRGB OLED displays tend to struggle with brightness, so you either end up with disappointingly high MPRT while strobing or an image that's simply too dim to be usable. But QD-OLED's impressive brightness should be able to overcome this limitation while being less prone to burn in, as its emitters require less voltage to drive the same level of brightness.
Currently the LG C2 pushes 178 nits sustained brightness on SDR with 100% white window while the AW3423DW on HDR 1000 can push 290 nits sustained brightness on a 100% white window (source: RTINGS). The reason I chose SDR for the C2 and HDR 1000 for the AW3423DW is because those give the highest sustained brightness on 100% white window (best full screen brightness in worst case scenario).
Let's compare that brightness with the ViewSonic XG2431's, which is Blur Busters 2.0 approved. The XG2431 hits 343 nits sustained brightness on a 100% white window. With HDR, the XG2431 hits 499 nits sustained brightness on a 100% white window but iirc, you can't use backlight strobing with HDR on that monitor for some reason. So, the AW3423DW only looses by about 50 nits and I believe that the gap can be closed.
We know that the AW3423DW beats the LG C2 handily in 100% screen brightness and Dell is willing to provide a 3 year warranty for burn in. LG doesn't even offer warranty for burn in on their C series of OLEDs. This suggests that QD-OLED's brightness is being held back and can probably be pushed even further. If you slap a heatsink on the 34 inch QD-OLED panel, I think brightness can be pushed to 400 or even 500+ nits sustained on 100% white window, and maybe with backlight strobing turned on, more brightness can be pushed as I think backlight strobing should reduce the wear of the OLED pixels as they'll be off more often giving them more time to rest (correct me if I'm wrong on this).
But what would the advantages of strobing a QD-OLED display over LCD's? One is the faster GtG time, I've read that in order to make the ViewSonic XG2431's crosstalk almost disappear, you'd have to run it at 120Hz. This is because at lower refresh rates, the GtG pixel response time can be hidden between refresh rate cycles. But QD-OLED has almost instantaneous pixel response times, so there's no need to reduce your refresh rate to hide the GtG pixel response time between refresh cycles. So with the right tuning, it should be able to make crosstalk disappear at its maximum refresh rat.
Speaking of tuning, I believe that a QD-OLED display would require less of it to receive the Blur Busters 2.0 certification. This is because the AW3423DW doesn't have any overdrive settings and as mentioned before, this is thanks to GtG pixel response times not being an issue. According to Rtings the AW3423DW does have a bit of overshoot when going from pure black from another shade, but I think that can be resolved with tuning.
My dream monitor would be one that utilizes Samsung display's 34 inch QD-OLED panel from a brand like ViewSonic or BenQ which supports the BlurBusters strobing utility and receives the Blurbusters 2.0 certification.
I'd consider myself a noob when it comes to my understanding of backlight strobing so my apologies if I made any mistakes or errors in this post. I wanted to start this discussion as I haven't seen anyone else discuss the strobing potential of QD-OLED displays. I was really disappointed to find out that the AW3423DW doesn't have backlight strobing, so I hope that other monitor companies can consider adding this feature once they get a hold of this panel .