If you want a truly huge display, then 85-inches is about the limit right now. However, to acquire such a large screen requires a lot of money and some forethought as to whether you can actually get it into your home. Samsung unveiled a better solution at CES this year called The Wall, and that prototype display is becoming a real product you can buy in August.
The Wall is a modular TV that can be scaled up to 146-inches. It uses small panels made up of MicroLED arrays that are bezeless and can be slotted together to form the size and aspect ratio display you desire. So rather than buying a large display, you'd purchase a pack of panels and build it yourself. You could start small then choose to buy more panels and make the display larger later on. Downsizing? Then make it smaller.
At CES, PCMag's Will Greenwald got to see a 146-inch version of The Wall in action and commented, "I couldn't see the pixels of the TV from about six feet away, which is probably the closest comfortable watching distance." So while it's modular, the constructed TV will be free of seams and capable of 4K resolution.
As Ubergizmo reports, while we now have a launch window of August, we still don't know the price. What is the price of the base modular TV kit? How much will new panels cost? As this is new and novel, we shouldn't expect it to be cheap. However, because you can opt to start small, it should hopefully be affordable. If The Wall proves popular, this could end up being how all TVs are shipped eventually.