In false ceiling you have to use lights in such a way that they are not visible (hidden). In false ceiling you do not get direct light, you always get indirect light . This is creates good effect on eyes.
In living room you hardly need 1 or 2 tubelights but in false ceiling the requirement (quantity) of light increases. Whether to have 4 LED lights in 4 corner or 6 or more depends on size of your living room. Advantage is you with LED you get to lit up area of your room which needs to be lit. You dont require to lit whole room all the time. hence it is possible to create different mood & soothing effects.