What makes an RGB TV 4K?
4K TV Certification
Leading technical bodies have defined rigorous standards that must be met in order for a TV to be certified as a 4K UHD TV. The Consumer Technology Association (CTA) and Digital Europe, for instance, specify that 4K Ultra HD TV must have 8.3 million pixels, and that each of those pixels must be able to produce the full range of colours.1
A Samsung 4K UHD TV produces rich, saturated images because every single one of its 8.3 million pixels provides full colour performance from red, green and blue (RGB) elements. So of course Samsung 4K UHD TVs are 4K UltraHD certified by the CTA and Digital Europe.
How do RGB Pixels work?
Some 4K UHD TVs that claim to be 4K UHD fall short of the important Digital Europe and CTA Ultra HD standard, however. These low-priced TVs have only around 6.2 million pixels capable of providing full colour performance and, with 25% fewer colour producing elements, display images with reduced colour accuracy, range and resolution compared to RGB TVs.
What sets the two types of 4K UHD TV apart is the way they make colour. Samsung 4K UHD TVs use only RGB pixels to create the colours that make up an image on the screen, while some other 4K UHD TVs use RGBW pixels, which incorporate a white element.
If you want to dig a bit more deeply into how RGB and RGBW TVs work, read on – it’s a little technical, but not too much. If you just want to know which type of 4K UHD TV doesn’t compromise on image performance, then follow the experts: Samsung RGB UHD TVS are 4K UltraHD certified to the higher CTA and Digital Europe standards, and RGBW UHD TVs are not.
The difference between an RGB and RGBW UHD TV lies in how the colours are made. Samsung 4K UHD TVs use only RGB pixels, meaning they create images using separate red, green and blue (the RGB!) colour elements. Why? Because that’s the way our eyes work. The cells in our eyes detect those red and green and blue colours, and the full richness of all colours can only be achieved with pure mixtures of those basic elements.
Other 4K UHD TV models that use RGBW add a white element to the usual red, green and blue colour combination. This can make the image appear brighter, but can also decrease colour accuracy, colour range and resolution. How?
RGB TV for colour accuracy
When a Samsung RGB 4K UHD TV needs a more powerful red, it makes its red pixels more intense. An RGBW 4K UHD TV adds white to the red, but mixing white in with red makes a washed-out, diluted red.
On a Samsung 4K UHD TV, a red apple – or the sky, or a glass of orange juice – can look bold and saturated on screen, not a pale imitation of the real thing. With Samsung RGB 4K UHD TV, you can enjoy accurate colours, for natural-looking images.
Colour range and detail
A 4K TV is required to have a resolution of 3840 pixels across the width of the screen and 2160 down the length of the screen (3840 x 2160 pixels). Multiplied together, that’s around 8.3 million pixels of resolution for expressing the colour and extreme detail in 4K content.
On RGBW 4K UHD TVs, only some of the 3840 pixels across the screen are RGB - the rest contain a white element. RGBW TVs have 25% fewer Red, Green and Blue elements, which reduces their colour range and resolution capability, and results in images that can appear less vibrant and sharp, compared to RGB 4K UHD TVs.
Samsung RGB 4K UHD TVs produce colour from every single pixel on the screen, so they are engineered to deliver 100% of the colour and detail in 4K content. No shortcuts, no compromises.
With a 4K UltraHD certified RGB TV from Samsung, you can be assured of an entertainment centrepiece designed for genuine performance.
See a range of RGB 4K UHD TVs
See UHD TV Range
Screen images simulated.
- Picture quality will depend on source content.
- To view in 4K Ultra HD, a 4K Ultra HD TV and 4K content are required.
- Picture quality of upscaled content may vary depending on source content. Picture quality of low-resolution video will not reach UHD quality.
- Performance may vary depending on source content.
- Actual size may vary by up to 2%.