Originally Posted by Avonosac
You wouldn't need to, just pulse them off when you're capturing a picture, with enough sensors to fill in the blind spots the camera would work just like your own brain does filling in your blindspot.
I'm not really sure what blindspots you're talking about since the OLED panel will be near completely (or basically completely) transparent. Cameras don't work like the human brain and don't exhibit persistence of vision. Perception/the human brain is analogous to postprocessing.
If you're saying turn off a small pattern of pixels (like say some checkerboard pattern), the photodiodes under the LEDs are still likely to clip due to the light from the adjacent pixels since there isn't a light pipe/channeling structure.
You're still going to need pretty high shutter speeds unless the phone uses a very low PWM frequency (voltage control is quite difficult to do with LEDs due to their non-linear nature so PWM is preferred) if it's going to be unnoticeable.
Currently most OLED displays in phones (iPhone X/XS/XS Max, Samsung's own flagships, etc.) use a PWM frequency of about 200-250Hz which is quite low. 1/200 and 1/250 shutter speeds at most ISOs will yield a good or decent image in most decently-lit and well-lit scenarios. 1/500 and above shutter speeds will usually require very good lighting conditions or very low noise and some post processing to get a good image. Good chance this frequency will go up as pixel response times improve in the interest of making the PWM switching imperceptible to human eyes.
Last edited by HybridCore; 10-22-2018 at 04:34 PM.