According to this avsforum press release a year ago, the 55" and 65" models use a RGBW pixel structure. The rest of the models use RGB panels. I haven’t been able to find any other sources regarding this issue. Would anyone be able to confirm if this is true or not?
https://www.avsforum.com/lg-lcd-tvs-ces-2018/
quote: “The UK7700 and all but two sizes of the UK6500 use RGB panels, while the UK6300 and 55″ and 65″ UK6500 use an RGBW panel.”