Interesting! Does this mean that OLED TVs and flat panel displays will cause issues? Worse than old-style CRTs?
What about LED LCD flat panel displays that aren't OLED?
CRT use electron to hit the fluorescent on the screen, which only light up one pixel at a time, however the fluorescent have afterglow that keeps lighting for a while after electric current is zero. This means it has sort of "motion blur"
OLED use multiple driver circuit to light up the full screen,pixels on each segment of the screen are driven alternatively like the picture on my last post. Means multiple pixels are lit at a time, however the light is zero when electric current flow is zero.That's why if you use a digital camera(or smartphone) to take picture of the OLED screen, the flicker pattern is tilted. The tilt angle is flicker frequency/shutter speed.
Liquid crystal doesn't emit light by itself. LCD have two types, CCFL-backlit and LED-backlit. CCFL-backlit always use PWM dimming because the current range is narrow. But CCFLs, like fluorescent lamps, have afterglow that "dampen" the flicker. LED-backlit can use either PWM or DC(direct-current) dimming. PWM lighting switch the backlight on and off at a fast rate, since the whole screen is lit or dark, the flicker is more damaging to OLED that lit different pixels separately. DC-dimmed LED-backlit LCD doesn't flicker, which is the best.
OLED cannot be driven by DC, no matter how advanced the driver circuit is.
In conclusion. The best to the worst is:
DC-dimmed LED-backlit LCD, CCFL-backlit LCD, OLED, CRT, PWM-dimmed LED-backlit LCD.(based on average brightness fluctuations).
DC-dimmed LED-backlit LCD, CCFL-backlit LCD, PWM-dimmed LED-backlit LCD, CRT, OLED .(based on individual pixel brightness fluctuations).