I believe that LG uses double resolution TV's so that they can do full res passive 3D where they alternate lines to each eye. That way they get full frame rate,

I believe that LG uses double resolution TV's so that they can do full res passive 3D where they alternate lines to each eye. That way they get full frame rate, reducing the flickering, and getting rid of battery powered glasses. So for them an 8k TV would really be a 4k 3d TV.