Recently, LG Innotek is expanding fast-growing marketing in for LED lighting in North America.

Thanks to maturing technology and increased backing by governments, companies produce brighter and more power-efficient LED bulbs and other products at lower costs. In addition, LG Innotek is featuring a flat-screen lighting module dubbed "ModulA 1D" at the LightFair trade show in Philadelphia, which kicked off Wednesday (local time). It’s just 8 millimeters thick, comes with advanced LED backlight unit technology. It also unveiled AngulA which is claimed to be the first "indirect" type LED light engine that promises better efficiency.

North America accounts for 30 percent of the global demand for LED bulbs, and cost still remains a barrier for LED lighting to hit the mainstream.

An LED bulb could be made up of a dozen light-emitting diodes, or small semiconductor chips, costing about $1 each.