1, the current ULED, which is also known as quantum dot TV, there are also QLED different names, and the essence of the point of view, still belongs to the LCD LCD LCD TV, but the backlight source used by the quantum dot TV is different. This type of TV can not realize self-luminous, still need a backlight source for the luminous process, but also a series of transformation at the backlight source. Quantum dot TVs incorporate a layer of quantum dot coating in the backlight source. The nano-sized quantum dots on the quantum dot layer can emit different colors of light when stimulated by light depending on the radius.
2, OLED seems to be a new display technology, from the principle, it uses organic light-emitting diodes, can be realized in each pixel point of the opening and closing, so it can show a fairly high contrast, its excellent black performance, can exceed the ordinary TV, so has been regarded as the industry as the next generation of TV technology. However, although OLED has excellent picture quality, it is more expensive due to higher technical requirements, and is mostly used in high-end electronic display devices.
So the difference between ULED TV and OLED TV lies in the different light-emitting principle of the TV panel used, OLED TV does not need a backlight, but ULED still needs.