As much as the contrast ratio and true black level sound thrilling, the suggestions that this technology is subject to the motion-blur sample and hold effect, like LCDs, is a major
come-down. The choice being, apparently, added blur to motion (yuck) or suffering the soap opera effect (huge yuck!). So, back where we've been with LCD.
Great. Just great.
Plasma displays, DLP, and Samsung OLEDs all use Pulse Width Modulation to independently control the intensity (Luminance) of every single R,G,B sub-pixel in the entire display. In Pulse Width Modulation each sub-pixel is continuously switched at a very high rate (typically greater than 100KHz) between the fully Off and fully On states by the display controller and AM Active Matrix. The percentage of time that a sub-pixel spends in the On state determines its particular observed visual Luminance. For example, within an given image refresh frame, if a particular sub-pixel spends 25% of the time in the On state and 75% in the Off state, it will have 25% of the peak Luminance for that sub-pixel at that instant. This makes it easy to digitally control the entire image and apply all of the desired display calibrations digitally as well.