Well let's REALLY define the 'Perfect TV' :
Size = 30-500" ; moving as aspect ratio changes so the screen surface area is the same whether you have 1.44:1, 1.618:1, 1.78:1, 1.85:1, 1.9:1, 2.39:1 or whatever.
Resolutions --> 64K @ 500" | 32K @ 250" | 16K @ 125" | 8K @ 62.5" | 4K @ 31.25"
Colour: 100% of Rec.2020 | 18 bit depth | 100% Colour volume @ 10k | 0 DeltaE errors | 6500.00k
Contrast: Infinity:1 | 0 nit black level | 10,000 nit HDR highlights @ any% window
Misc: 2.200/2.400 gamma | 0 GS errors | 0ms input lag | 480hz refresh rate
Now along with that, the TV also has to have a glasses-free true 3D image with the exact same resolution/contrast/colour/brightness/greyscale/refresh
as the 2D image would have and no crosstalk or any kind of issue. No vignetting, no rainbow effect, no D.S.E. the latest Moth Eye filter which rejects 100% of light featuring VANTA black material (the darkest material on earth), no noise, 100% screen uniformity in white, grey, black or any IRE imaginable.
The year 2049 maybe?