With the rapid growth in demand for commercial lighting and industrial lighting, COB devices have grown rapidly in recent years. However, the price war that once appeared in the field of SMD devices has begun to follow, and it has been close to the COB package that has been rich in gross margin.
“Ordinary COB products have been falling at an average annual rate of more than 50% since 2014,†said Li Shengfa, senior analyst at the High-Tech Research Institute LED Research Institute (GGII).
In order to resist the invasion of price wars, the inverted COB and high-efficiency COB products came into being and began to break through.
The LED packaging industry is developing rapidly, product update speed is accelerating, and high-efficiency COB technology is constantly improving. Manufacturers continue to increase the luminous flux density, ensure color temperature stability, and achieve more effective lighting quality.
It is understood that in order to improve the light efficiency of LED lighting products, Jingke Electronics launched a new generation of COB core series products in 2016. This series offers the widest range of color temperatures (2870K to 3710K), which means it is above 90.
International packaging giant Lumileds also introduced the new mid-power LED product LUXEON 3535L HE Plus. According to Lumileds, the LUXEON 3535L HE PlusLED module with an output current of 100 mA and a display temperature of 80K can achieve 194 lm/W, which is 10% higher than that of the second generation.
As a leading company in the LED industry, Langmings is not outdone. It announced the launch of the third-generation chip onboard COB array with an output efficiency of 170 lm/W, which is 5% higher than the Lumileds product's light efficiency and luminous flux.
In addition, the packaging company Hongli Optoelectronics also launched a new flip-chip COB, with a nominal value of >95, and power can cover 15-80w.
Driven by many new products, the high-efficiency COB market is becoming more and more lively.
“High-efficiency COB products can improve light efficiency, reduce heat loss and reduce thermal resistance to ensure the relative reliability of the products. Wang Mengyuan, general manager of Zhonghao Optoelectronics, said that the current high-efficiency COB is not widely used, mainly for high-end hotels and spotlights. , outdoor mining lamps and other fields.
Wang Gaoyang, marketing director of Hongli Optoelectronics also believes that “the current COB light source technology is more and more mature, and the market has a stronger demand for COB light source. The packaging manufacturers no longer stay in the initial technical solution stage, and turn to the pursuit of high quality and high. The cost-effective stage of efficiency COB, flip-chip non-gold wire packaging technology with high performance and high quality performance will become the new direction of COB light source."
According to the US Department of Energy's solid-state lighting (SSL) R&D program released by the US Department of Energy in May 2015, LEDs are expected to account for 40% of the US lighting market by 2020, including fluorescent and halogen lamps. In addition, it predicts that by 2030, more than 88% of the lighting will be replaced by LEDs, which is the main energy saving trend.
Jingke Electronics believes that to achieve such a goal, the efficacy of the finished lighting product needs to reach 200lm/W, and the luminous efficacy of the LED package needs to reach 220lm/W. "With the increasingly fierce competition in the commercial application field of LED lamps, the structure of LED lamps with smaller size, stronger performance and higher reliability has become the goal pursued by the commercial lighting industry."
Driven by commercial lighting and industrial lighting, high-efficiency COB products are in great demand in the future. However, the higher the light quality requirements, the higher the product cost. This has also become an obstacle to the large-area application of high-efficiency COB products.
“High-efficiency COB products are relatively high in price compared with ordinary COB products. Although the price cut has become a trend, in 2016, the high-efficiency COB price market will not appear too large and will tend to be stable.†Wang Mengyuan told High-tech LED.
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