These electrons hit the screen and cause the pixels to light up. The TV has three types of composite pixel colours which are distributed throughout the screen in the same manner. They are red, green and blue. These colours when mixed in different proportions can form the other colours. Thus the TV produces all the colours needed.
OLED works like an LED but uses organic molecules instead of other semiconductors to produce light. Electricity flows from the cathode to the anode through the emissive and conductive layers producing colored light. The primary OLED materials are yellow and blue. Color filters are then used to make the rest of the color. OLED screens do not have a backlight like LCDs — instead, the pixels themselves emit light when power is applied to them. Because of this, OLEDs can be made about 30% thinner and lighter than Sony introduced its first 55-inch full high-definition (HD) μ-LED TV panel with 1920 × 1080 resolution in 2012, which consists of over six million individual μ-LEDs. In a recent work,

The type and position of LED lighting a particular VA screen might be using can have an impact, for instance. There are multiple variations on the VA theme available from different manufacturers, too. As a basic principle, though, black levels and contrast are consistently and often considerably better on LCD TVs that use VA panels.

For the majority of images it will consume 60–80% of the power of an LCD. OLED displays use 40% of the power of an LCD displaying an image that is primarily black as they lack the need for a backlight, [39] while OLED can use more than three times as much power to display a mostly white image compared to an LCD. [40]
bIMi. 483 350 59 49 282 346 477 60 315

led tv panel working principle