The production line will be used to make displays for big-screen TVs and its start comes shortly before domestic rival Samsung Electronics is also expected to start a new LCD factory.

The LG Display plant is based on so-called "8th generation" production technology. This means it can process sheets of mother glass -- the large glass panels on which several LCD screens are made -- of 2.2 meters by 2.5 meters. Each generational process technology is best suited to a certain screen size or sizes because they fit on the mother glass sheets with least waste.

LG Display will use the new plant for 32-inch, 47-inch and 55-inch LCD panels.

Monthly capacity of the line is 20,000 sheets of mother glass, although LG Display anticipates increasing production to 83,000 sheets per month by the end of the year.

LG Display is the number two LCD TV display maker behind Samsung Electronics, according to DisplaySearch. With the new plant it hopes to gain additional sales thanks to the expanding LCD TV market, particularly in China where a government stimulus package has been designed to stoke rural consumption of consumer electronics products, it said.