Small and mid-sized companies actively develop thermal radiation board technologies.
As LED lightings are rapidly gaining popularity as power conservation products, patent applications for thermal radiation boards used for improving energy efficiency of LED lamps are increasing.
The Korean Intellectual Property Office (KIPO, Commissioner: Kim Young-min) said on August 27 that patent applications for thermal radiation boards used for LED lightings are steadily increasing since 2008. The number of such patent applications grew from 19 in 2008 to 38~55 annually after 2009, rise by 100~189% over 2008.
Compared to conventional lightings, LED lamps consume less electric power and are eco-friendly, and thermal radiation boards are major components of LED lamps that improve lifespan and efficiency by effectively radiating heat.
Researches show that lifespan of LED lamps extends by about 57% and their energy efficiency is improved by about 14% when their temperature drops by some 10°C through heat radiation.
Patent technologies of thermal radiation boards are evolving from selecting materials that effectively transfer heat into improving structure of LED lamps.
According to the KIPO, technologies for improving structure or shape of the printed circuit board (PCB), such as radiation holes, lead frame and laminating method, account for 67% of total patent applications. And technologies for applying new materials, such as ceramic, metal and nano-scale devices, represent 31%.
Among patent applications filed since 2008, applications filed by small and mid-sized companies in Korea, including individuals, account for 59%.
The KIPO analyzed that small and medium companies are active in filing patent applications because they have deep interest in LED lamps and LED lighting industry environment is changed as it was selected in 2011 as an area suitable for small and medium companies.
A KIPO official said, “As LED lightings are used wider, development of new technologies related to thermal radiation boards and their patent applications will increase.”
Source : todayenergy