The most common 4K display technologies and what are you doing. The new technology or even HDR. OLED is found in 4K screens as well. HDR means high dynamic range and it is the new process for expanding the range of colors, contrast, brightness, and black levels at the edges of the screen as well. It is very important for a TV screen to have the HDR so that they can have a balanced color image. OLED is completely different from HDR and it is found on LED and LCD TV screens. In the OLED TVs, there are no back panels and there is a proper display of the actual clarity of the picture. It has a precise control feature and will dim the lights accordingly. The quantum dots are unnecessary color technology which is necessary to be fitted inside the LED and LCD panel. It will help in the overall saturation of the color and the display of the television will become much richer.