Costs. That is the only thing LED chip manufacturers think about, and who can blame them? LED chip prices are expected to drop to 50 cents for a 1,000 lumen LED lamps in 2015, said Epistar Chairman B.J. Lee at 2015 LED Executive Summit hosted by SEMI at TILS 2015 in TWTC Nangang Exhibition Hall, Taipei, Taiwan. Moreover, manufacturers might be facing the challenge of raising LED efficacy to 3,000 lm/$ within two years. Tightening profits are spurring manufacturers to develop new technology to drive down costs.