Many users are expectant before the future arrival of OLED monitors due to the many characteristics that this type of technology supposes. But the reality is that, although there have been some attempts, they have always ended in failure. Although there are several reasons for this failure, there is one in particular that is critical to satisfy users, the so-called Motion Blur , why do OLEDs suffer from it?
Although we always talk about gaming screens, the reality is that OLED technology in its different variants is implemented in a large number of devices such as portable consoles or smartphones.
These, like televisions with OLED technology, suffer the much reviled motion blur, the main stumbling block of this technology, the question is why?
OLED has to break several barriers before being optimal for gaming
Although the response times between pixels are almost zero, OLED technology represents a problem for manufacturers due to the so-called Sample and Hold, an effect that goes hand in hand with what is known as persistence.
This effect of “sample and retention” what it produces is that the frames represented on the screen remain statically fixed on it until the refresh rate of the panel refreshes them.
This would not be more inconvenient if it were not for our eyes are not static in one position continuously, which makes it possible for us to appreciate that motion blur effect on screen when moving them, especially if the refresh rate is low.
The problem is not corrected with a shorter pixel response time or a shorter total response time, since it is a very evident eye appreciation problem, therefore, we could have a GtG of 0 and an MPRS of almost zero that would continue to exist. issue.
There would only be one way to solve the problem, in which the entire industry works
The solution since the times are minimal currently involves reducing the amount of sample time for each frame. There are only two possible ways to achieve this: much higher on-screen hertz rate or forcing a continuous screen scan, the so-called Rolling Scan .
This technique is different from those used in gaming monitors, since in these a complete black image is introduced to improve the sensation of movement and smoothness. The problem is that this requires a fairly high brightness as a rule, since after the black image it is necessary to represent a frame with a higher brightness that compensates it.
This cannot be done in OLED due to its current lack of brightness, although it has improved at present, so Rolling Scan almost completely solves the problem. This is a technique that synchronizes panel scanning with cable scanning, be it HDMI or DisplayPort . What is achieved is a much shorter time between the so-called On Scan pass and the Off scan pass, which achieves a greater number of scanning passes at the same time that the monitor completely refreshes the image.
Some OLED manufacturers such as LG have followed the opposite path and have introduced black insert frames between update times, but they have had to greatly improve the brightness of their panels and even so the effect is not entirely satisfactory despite the fact that it improves the motion blur.
But the problems are still there, increasing as they have done the Hz rate only alleviates the problem again. This is where new companies like JOLED collide , which are the great hope of OLED technology for gaming and although there are advances, current gaming monitors have also done the same as with ULMB , again making differences with OLED.
Source> Blurbuster
