Originally Posted by Бальтазар Лин
Hello! As one can read here: www .rtings.com/tv/reviews/lg/c9-oled
"C9 uses 4 sub-pixels, but all 4 are never used at the same time"
Does it also mean that every pixel of 3840×2160 has one white subpixel? Ed est, are white pixels quantity 8294400?
Hi, WRGB OLED's have 4 sub-pixels, due to panel design, the additional W sub-pixel (unfiltered transmitting white light) while the the RGB sub-pixels are filtered.
After the whole video processing, the final video data 3x 10-bit (RGB) goes to a controller where its converting them to 4x 10-bit (WRGB) to drive the panel, but during that calculation one sub-pixel will be off, so all the times 3-subpixels light up. (one is always off).
This is happening to all LG OLED or all brands which are using panels from LG, from 2015 till now.
That type of displays with 4 primary colors called non-additive.
Normal/typical displays are RGB, so addictive, to generate White, the 3 sub-pixels (R,G,B) will light up.
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