I used to use a TV as part of a triple screen setup, but I went back to dual screens because the TV was noticeably worse than the monitor. My tv wasn't great, and my monitors are fairly nice, but there are a few things I've noticed about TVs that make them less suited for computer work than monitors.
For the same resolution, TVs often have a larger pixel pitch than monitors. I haven't noticed this as an issue for 4K tvs, but there are a few 1080p tvs that have pretty bad pixel pitch. My 32" 1080p tv has horrible pixel pitch. It is really only noticeable at the distances you'd view a monitor from, but it's really annoying.
Monitors compete on things like gray-to-gray response time, ghosting and input lag. TVs care about ghosting, but contrast ratio and black level is a bigger concern for them. I find that TVs have a fairly noticeable input lag, even when in game mode, but I'm really sensitive to this issue.
TVs tend to be slightly larger than monitors for a given screen size. It's not a huge difference, but if you want to do multi-display setups the bezel width can be a difference.
My best friend uses a TV as a monitor and is not bothered by any of these issues in the least, so it basically comes down to personal preference.
For the same resolution, TVs often have a larger pixel pitch than monitors. I haven't noticed this as an issue for 4K tvs, but there are a few 1080p tvs that have pretty bad pixel pitch. My 32" 1080p tv has horrible pixel pitch. It is really only noticeable at the distances you'd view a monitor from, but it's really annoying.
Monitors compete on things like gray-to-gray response time, ghosting and input lag. TVs care about ghosting, but contrast ratio and black level is a bigger concern for them. I find that TVs have a fairly noticeable input lag, even when in game mode, but I'm really sensitive to this issue.
TVs tend to be slightly larger than monitors for a given screen size. It's not a huge difference, but if you want to do multi-display setups the bezel width can be a difference.
My best friend uses a TV as a monitor and is not bothered by any of these issues in the least, so it basically comes down to personal preference.