Over the past 2 years, a new type of LED packaging often referred to as “filament” LEDs has been gaining popularity fast. These LED packages enable the manufacturing of incandescent style LED bulbs, combining the traditional look and feel of the well-known incandescent bulbs with the user benefits of LED lighting such as extended life and energy savings. These types of lamps are expected to take the market by storm as mass retailers all over the world will be introducing these lamps in the coming lighting season. 

LED Filaments are usually constructed by applying light emitting diodes on a transparent substrate, allowing light to be omitted from all sides. This omnidirectional light emission results in a higher energy efficiency level, as the light does not get “trapped” in the LED package itself. This increased efficiency of the LED filaments allows for more attractive light bulb shapes, without obstructive large heat sinks that limit application use and improves the aesthetics of the light bulb in its application, especially for decorative use in for example chandeliers. EPISTAR holds key intellectual property regarding the LED filament technology used in making LED filament style lamps. This patent portfolio covers Taiwan, China, United States and Europe.

Dangoo has been at the forefront of developments in filament lamp technology since its inception, presenting their first solutions at the Hong Kong Light Fair in October 2012. Since then, manufacturing has been managed by Cosmoled, while Dangoo remained the exclusive reseller of the Cosmoled Filament lighting products. Today, Cosmoled has been granted licenses for the production of LED Filaments by EPISTAR. 

“At Dangoo we understood at an early stage the market potential for LED Filament lamps. With a previously installed base of 10 billion units, the standard incandescent bulb has been the most ubiquitous bulb in the world for over a century. Replacing these with energy efficient alternatives has been the driving force behind the invention of compact fluorescent lamps in the 80’s and behind the more recent market growth of LED lamps. However, CFL and current LED bulbs only partially address the market due to bulky designs and compromises in aesthetics. With this license and our own patented product designs, we have an enabling technology in hand that facilitate the lighting industry to increase the adoption of LED lighting in the lighting market, taking away the last barriers for mass adoption of LED bulbs and target the 90% energy savings that we need to curb the world’s energy usage in lighting”, says Peter Harteveld Chief Commercial Officer at Dangoo.

The first license of Epistar’s patent has been granted to Cosmoled located in Lin’an, China. “We are very excited to work with Epistar on this historical development of LED bulbs that will change the industry and the adoption of LED bulbs”, says Vincent Wen, General Manager of Cosmoled. “Based on the strength of Epistar’s IP and leading role in the LED industry, we are confident to offer a full range of dimmable, full glass LED bulbs that will make a major impact in the market”.