Currently, many major smartphone makers have decided to focus on the screens’ refresh rate. Well, it’s better to say they use this feature to promote their new products. There are some models with a 144Hz refresh rate screen and some high-end handsets with a 120Hz screen. But, are these numbers so important or the display material also plays a huge role? To answer this question, Samsung has released a promotional image today via its Samsung Display Weibo handle. It shows the effects of different panel screens. Samsung said that the smear length of Samsung’s 90Hz OLED screen is equivalent to that of the 120Hz LCD screen.
Samsung Display stated that it has optimized the high-speed motion on high refresh-rate displays. OLED does not require liquid crystal and can achieve fast response through fast electron mobility and current drive characteristics. It will result in a more natural screen display.
The data of the global certification company SGS shows that the longest smear length of Samsung’s 90Hz OLED and 120Hz OLED screens are 0.9mm and 0.7mm, respectively. Also, the maximum response time of dynamic images is 14ms and 11ms, respectively. Compared with the 90Hz LCD, the smear length of Samsung 90Hz OLED is shortened by one fifth. Thus, it is the same as that of a 120Hz LCD screen. At the same time, the smear length of the Samsung 120Hz OLED is shortened by one third compared to the 120Hz LCD screen.
Samsung Display has started research and production of new OLED screens using LTPO backplane technology. At the same time, in order to cooperate with production, Samsung has also built a new A3 OLED panel production line. LTPO technology supports turning on and off a single pixel on the screen. As you guess, this is done for power-saving purposes.
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Terry Ts 
Rudhra Nandu