Difference between 4k and 4k certified TVs

[kieran.pinks]

Hi Guys,

Please delete if it's in the wrong place! (Apologies if it is!)

I would like to know if there is a difference between 4k and 4k Certified, as I have been told there is?
It's started a very heated discussion in our household and it needs to be clarified / cleared up!
Thanks in advance!

Regards,
Pinky

 

[getochkn]

Well from my understanding, and I could be wrong. Some cheaper 4K TV's don't use a single pixel for each pixel, but rather a subgroup of 4 pixels to create the color needed. A true 4K display, each led could be red, green, blue, white, and obviously no pixel lit would make black. In a cheaper TV, there is a group of 4 led's in a square that is red, green, blue, and white, and then that led lights up to make the color needed, but it's not a true 4K display, so I think that's where the difference in certification comes into play.

 

[k1114]

Nope. Pixels have subpixels of different colors, usually rgb. (There are other configs like rgby and rgbw). These subpixels make up a single pixel. That's basic info of how nearly all lcds work and should not be confused with this. Even oled displays have different subpixels and I don't know of any display tech that uses a single led that changes color. http/electronics.howstuffworks.com/lcd5.htm

Honestly I never heard of this and google isn't coming up with it except for 1 site that mentions tvs with pixels that don't change to any color except white but it's showing the uhd premium certification logo which is not the same thing. There are many logos, standards, different tech terms and it's all marketing nonsense being made up by the companies to confuse people on purpose. The premium uhd cert is the only one that is ever mentioned but not having it doesn't mean it's not capable, as they could just not be one of the companies in the alliance.