Router beside LED tv

I have my Dlink router with 4 antennas slightly behind my Vizio 47" tv, will this effect the signal of my WIFI?

How far away from the router is the device that needs to use WIFI????

If several dozen feet then no, if several dozen yards then maybe, if the TV and router are at one end of a big house and the device that need WIFI is at the other end or up stairs then maybe.

I try during an install to setup the router in the middle of a house, or as close to it as possible, this give the best coverage for WIFI.

But I always use Amped Wireless routers as they have the highest WIFI power output you can get. (in consumer grade routers)

Also to note is if you connect to wifi on your smart tv and the router is too close, the wifi signal can overload the tv wifi.
Should be several feet away from each other.