Pretend the TV is a mirror. Everything that you could see with a mirror mounted in the same spot reaches the screen and attempts to reflect back to the viewer.
The face of the LCD has two treatments to deal with this. The most common is whats called an AG treatment. Basically they intentionally make the surface a little bit bumpy (on a really small level, kind of a mat finish). That way, what ever is reflecting back at you spreads (diffuses) out and does not produce a clear image the way a mirror would.
That works pretty well.
The other part is having an AR coating. The idea with the coating is to reduce how much light is reflected off the screen. At best an un-coated surface can absorb about 92% of a reflection. The AR coating can get you to 96% or so. That may not sound like a huge change but the reflected light was cut in half ( was 8%, now its 4%).
Better, newer screens can reduce that even more. From what I have seen, the AR coatings on the LCDs have improved in the past two years.
One thing working against all of this is some companies produce screens with limited AG and a good AR. Those are the glossy screens. The reason for that is the AG treatment tends to mute the image a bit so the glossy screens tend to look more vivid.
An extreme version of this is to optically bond a AR glass panel to the front of an LCD. The image looks great, very vivid but will have a problem with reflections for strong lights. The best AR coatings still reflect about 1% of any light back. Without a diffusing surface you get a clear image of a bright light, even though its only a small percentage of the light.
For a shop environment, a good AG / AR coated LCD is a good starting point. Angling the screen and placing lights to get them out of the line of site also helps. Lights that have a shroud that gets the bulb out of the reflected line of site may be enough.
I have 42" operating room / medical monitor that's designed to work in brightly lit operating rooms. It has a glass AR / AG front. That seems to work reasonably well, even with all the lights on.
Since most of my manuals are electronic, its nice to just pull them up on screen and be able to view them while I'm working.
(no pun intended 
)
