The company is one of ten accused by the US Department of Justice of conspiring to fix the price of LCD panels in the territory between 1996 and 2006.
LG agreed to the settlement figure to avoid the cost of lengthy legal proceedings but denied any wrongdoing, BBC News reports.
The payment was the largest shelled out by any of the companies involved, which include Toshiba, Samsung, Sharp and Hitachi.
Toshiba was fined $87 million (£55m) earlier this month for its part in the scandal, though the company also denies any wrongdoing and has vowed to appeal against the decision.
AU Optronics was found guilty of LCD price fixing several months ago, and could face a fine of up to $1 billion (£771.5m), according to the US Justice Department.
Money generated from the penalties will go to US consumers and state governments.