At work we wanted a large 1920 x 1080 monitor to use with a certain program. Since monitors with this resolution seem to currently stop at 24", we went for a LCD TV so that we could have 26", and in fact we bought the LG 26LE5500 which is a LED LCD TV.
I'm sure the screen would be great for watching movies, but the problem we have is that for computer work, the quality is simply much worse than our existing (CCFL i.e. traditional) 19 inch LCD monitors. The main problem is that text does not appear sharp. If I look at black text on a grey background on my old monitor, I see obviously black and grey. On the new TV, I see black, grey, and slight bits of white at the sides of the black text, as if "shining out from behind". Let me clarify that both monitor and TV are running at their correct resolution, so it is not the old problem of having the resolution too low. This problem exemplifies something about the display which makes it really unpleasant to read text on this screen - fine for a minute but not if you want to work all day with the screen.
Additionally even after playing a lot with the controls, the colour reproduction is not as faithful in my opinion, and the white is perhaps "overly flourescent", however these problems would be acceptable, it's the text problem that is the killer.
The question is: What is source of the problem here? Is it something about TVs that makes them worse as monitors? Is it the fact that it's a LED LCD? Is it something brand-specific, LG's poor construction quality? We want to purchase a different screen to solve the problem, so I need to know where the problem lies. Obviously I will test the screens in the shop, but it's good to understand the technology before entering.