Why do people buy 4K TVs? Because it is more clear!
Think about it, you sit on the sofa and you can clearly see every hair of the character. This is how cool it is!
Of course, the premise is to have a true 4K source...
Of course, the source of the film is true and false, just as the so-called HD, ultra-clear, 1080P, original paintings, and Blu-ray that you saw on the video site are actually shrinking.
When it comes to true and false 4K, maybe you have heard about it, and 4K TV is also true and false.
The discussion and controversy about genuine and fake 4K TVs had already erupted in 2014. However, this topic has not yet been cut off.
So, what is fake 4K?
The so-called "fake 4K TV" includes two kinds: one is to use a fake 4K panel, and the other is that the internal hardware does not support 4K decoding.
The 4K resolution has two mainstream specifications of 4096*2160 (17:9) and 3840*2160 (16:9), and the latter is more common due to the 16:9 ratio of LCD panels.
The two numbers that are multiplied mean the number of effective pixels for the length and width.
Each pixel, in theory, also contains R, G, B, that is, red, green, and blue primary color sub-pixels.
What we call true 4K means that a pixel is composed of these three sub-pixels and displays a variety of colors by mixing.
As for the so-called fake 4K panel, it also has a separate scientific name called RGBW, which adds a white sub-pixel representing brightness based on the three primary colors.
Samsung and LG are currently producing such panels, which are called Green UHD and G+ UHD.
However, the RGBW panel does not consist of four pixels and consists of one pixel:
Witly subdividing a sub-pixel into two, the neighbors share each other, and the pixels are obviously less, but they have a 4K effect.
The actual resolution of the two panels is 1920*2160 and 2880*2160, which is lower than the 4K resolution standard.
The LG G+ UHD panel counts white sub-pixels, the number of which is the same as the standard RGB 4K panel, and the fineness is relatively close, but after all, there are 1/4 is W, and the color performance will still be different.
RGBW 4K screen is not good? Although consumers and some TV companies still identify such TVs as "fake 4K," these RGBW panels do meet VESA's 4K standards, and they have all obtained 4K certification from some domestic and international authoritative organizations (but Europe and Japan Do not recognize RGBW).
In addition, RGBW 4K panels have higher light transmittance due to fewer pixels (note: non-OLED panels still need LED backlight), power consumption and manufacturing costs are also reduced, according to Samsung and LG, this is just to reduce costs Differentiated products.
How to distinguish between genuine and fake 4K TV?
"Fake 4K" TV screen has a very obvious feature, that is, it has white sub-pixels, but it can not be seen with the naked eye, you need to use high-magnification magnifying glass to see, you can also use glass beads to observe the white display area of ​​the screen (please Do not observe for a long time.) If each pixel consists of stripe-shaped R, G, B sub-pixels, it is a true 4K screen.
Another method is to install third-party inspection applications, such as "4K test", "sofa assistant", etc. Non-smart TVs can be connected to smart boxes, which are especially suitable for identification in stores.
You can also search the online 4K test chart of Professor Qian Yuankai:
In addition to this, as mentioned in the previous article, some fake 4K TVs do not support the playback of 4K video, especially H.265 encoded standard video, in hardware, so it is also necessary to put video in this format on a USB flash drive or mobile hard disk. , Play test on TV.
If you are in trouble, please make good use of the web search engine to obtain reference information.
Of course, true or false 4K is important, but it includes the clarity, color, brightness, and other picture quality features that you need to personally confirm with your eyes. Extended reading: Not afraid of advertising law? The truth behind the smart TV 30 core processor is
Think about it, you sit on the sofa and you can clearly see every hair of the character. This is how cool it is!
Of course, the source of the film is true and false, just as the so-called HD, ultra-clear, 1080P, original paintings, and Blu-ray that you saw on the video site are actually shrinking.
The discussion and controversy about genuine and fake 4K TVs had already erupted in 2014. However, this topic has not yet been cut off.
The so-called "fake 4K TV" includes two kinds: one is to use a fake 4K panel, and the other is that the internal hardware does not support 4K decoding.
The 4K resolution has two mainstream specifications of 4096*2160 (17:9) and 3840*2160 (16:9), and the latter is more common due to the 16:9 ratio of LCD panels.
The two numbers that are multiplied mean the number of effective pixels for the length and width.
Each pixel, in theory, also contains R, G, B, that is, red, green, and blue primary color sub-pixels.
As for the so-called fake 4K panel, it also has a separate scientific name called RGBW, which adds a white sub-pixel representing brightness based on the three primary colors.
However, the RGBW panel does not consist of four pixels and consists of one pixel:
The actual resolution of the two panels is 1920*2160 and 2880*2160, which is lower than the 4K resolution standard.
The LG G+ UHD panel counts white sub-pixels, the number of which is the same as the standard RGB 4K panel, and the fineness is relatively close, but after all, there are 1/4 is W, and the color performance will still be different.
RGBW 4K screen is not good? Although consumers and some TV companies still identify such TVs as "fake 4K," these RGBW panels do meet VESA's 4K standards, and they have all obtained 4K certification from some domestic and international authoritative organizations (but Europe and Japan Do not recognize RGBW).
How to distinguish between genuine and fake 4K TV?
"Fake 4K" TV screen has a very obvious feature, that is, it has white sub-pixels, but it can not be seen with the naked eye, you need to use high-magnification magnifying glass to see, you can also use glass beads to observe the white display area of ​​the screen (please Do not observe for a long time.) If each pixel consists of stripe-shaped R, G, B sub-pixels, it is a true 4K screen.
You can also search the online 4K test chart of Professor Qian Yuankai:
If you are in trouble, please make good use of the web search engine to obtain reference information.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.
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