After reading the price fight in recent years, the COB market is gradually stabilizing, the price reduction space is very limited, and the inverted COB with smaller light source and higher light efficiency is expected to become the next market trend.
In order to compete for greater market share, and at the same time pass on cost pressure, major manufacturers have focused their attention on flip chip, in terms of its high profit margin (according to relevant industry sources, profit margins will reach 300%-400%) ()), and thus attracted many COB package manufacturers to layout the inverted COB field.
In the past two years, the COB market has maintained a growth trend. According to the data of the High-tech Research Institute LED Research Institute (GGII), the sales volume of COB products in 2015 accounted for about 30% of the overall light source, replacing the traditional patch market by 30%-40%. Market share.
In 2016, the overall LED market is generally warming up, which is also a strong driving force for the development of the COB market.
“With the increasing demand for LEDs in the entire industry chain, flip-chip technology is becoming more and more popular, and everyone is also focusing on the flip-chip COB market. As one of the members of the same side, the company will also shift its focus to flip-chip COB light source. In research and development," said Liu Lin, deputy general manager of the same party.
It is understood that COB is a bare chip technology for LED lighting. A plurality of LED chips are placed in a small unit to form a COB LED lighting module. This is also a relatively new technology for LED packages, which mount LED chips directly on the substrate to form an array of LEDs on the LED lighting module.
In the commonly used COB light source products, the chip accounts for more than 50% of the cost of the light source, and some may even be close to 70%. The COB price is rapidly reduced, which depends largely on the downward adjustment of the chip price.
True, light efficiency is a very important indicator, but COB has a natural advantage, that is, light quality is better than SMD. It has greater advantages in the control of optical color quality in optical design effects, but the industry often ignores this advantage and is limited to the indicators of light efficiency and energy saving.
Wang Gaoyang, marketing director of Hongli Optoelectronics, mentioned 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 COB, the high-performance and high-quality flip-chip solderless gold-line packaging technology has also become a new direction for COB light sources."
Lin Jin, Chairman of Xuyu Optoelectronics, also revealed that “Since the second half of last year, we have successively launched a number of high-efficiency, ultra-low thermal resistance flip-chip LED integrated light sources, and they will also become important for Xuyu in 2016. In the market direction, the market demand for flip-chip light sources has gradually increased. It is expected that Xuyu will officially expand to 10 production lines next month."
Major manufacturers in the market have also launched their latest products, such as the new flip-chip COB products introduced by Hongli Optoelectronics, the index is >95, the power can cover 15-80w; Dehao Runda ceramic-based flip COB, Ra=95, The luminous efficacy is up to 100lm/W; the high-intensity ceramic flip-chip cob of the same side photoelectric, and the superconducting aluminum substrate COB light source of flip-chip soldering-free gold-line packaging technology introduced by Liyang Optoelectronics.
Indeed, the COB module will enable more functional integration, such as integrating the power supply into the light engine for de-energization and super-power integration; the other is the application in the segmentation field, which requires many uniquely designed light sources, such as intelligent control. Module integration, the most important spectral integration in medical lighting. These require high-end professional technology and the future development of COB.
Overall, regardless of the trend of flip-chip COB, it is an effective means to solve the current decline in package gross profit and seek new profit growth points.
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