After several years of development, COB light source technology is about to enter a new stage of development this year. Companies are turning to compete for the best overall cost performance with high quality, high light efficiency, and high stability. At the same time, packaging gross profit margins have declined sharply year by year, and companies are eager to reduce product costs. AC COB, which is highly integrated and has unique cost advantages, has become an effective means for companies to seek new profit growth points.
Cost reduction and efficiency improvement gave rise to AC COB
AC COB removes the traditional AC-DC switching power supply and does not have traditional components such as electrolytic capacitors and transformers. Therefore, the light source is highly efficient and can solve the shortcoming of insufficient power supply life, extend the service life of the light source, and reduce product costs as a whole.
"Since the development of the LED lighting industry, the two driving forces of cost reduction and efficiency improvement will make the value chain of the entire industry more reflected. The LED industry should form suppliers that integrate epitaxial chips, packaged integrated modules or light engines." Xiao Guowei, chairman of Jinko Electronics, believes that AC COB is an inevitable trend in LED development.
A number of packaging companies such as Jinko Electronics, Hongli Optoelectronics, Sony Lighting, Meiya Optoelectronics, Zhonghao Optoelectronics, Crescent Optoelectronics, Tongfang Optoelectronics, Seoul Semiconductor, and Lextar Electronics began to accelerate their product layout in the AC COB field last year.
In line with the current situation, Jinko Electronics launched a new AC COB white light module light source at the beginning of this year. It has optimized the wire bonding mode and parameters, and the mass-produced COB light source is controlled according to the shipping standard of 500 rounds of hot and cold shock. It integrates thyristor dimming components, IC components, temperature control protection and other components on the traditional COB light source substrate. It can realize direct input of 220V mains power by connecting an external rectifier circuit and supports 180-260V wide voltage amplitude modulation. In addition, the module’s light source uses a ceramic substrate, which has good heat dissipation performance and high voltage resistance, and can pass strict European high voltage tests.
Flip-chip technology and strong R&D lead the trend of high luminous density
As the most mature flip-chip soldering gold wire-free packaging technology and white light chip-scale packaging LED in China, Jinko Electronics, its new AC COB white light module light source will usher the lighting industry into the era of high luminous flux density.
Since 2003, Jinko Electronics has been focusing on breakthroughs in flip-chip technology, introducing integrated circuit wafer-level packaging into the LED industry through gold-wire-free packaging, realizing gold-wire-free packaging on ceramic substrates and metal substrates, starting the trend of flip-chip gold-wire-free packaging, and subsequently becoming the first company in China to conduct gold-wire-free packaging based on flip-chip soldering technology.
Jinko Electronics' COB series products are born out of mature flip-chip technology, and are constantly optimizing technology based on market and consumer needs.
Behind the success of Jinko Electronics lies a powerful technology research and development team composed of many doctors and masters. According to statistics, Jinko Electronics currently has a R&D technical team of more than 100 people, consisting of technicians, assistant engineers, engineers, senior engineers, and senior engineers; 5% of them have a doctorate, and 20% have a master's degree or above.
Jinko people adhere to the product concept of "keeping integrity and innovation, paying tribute to craftsmen, becoming the first domestic LED brand, achieving more efficiency, higher display, and smarter". Based on the independently developed flip-chip technology, through a series of optimization and further research, we have achieved continuous development and upgrade of LED chips, integrated circuit chips and modules. And they attach great importance to user experience satisfaction, such as conducting low-current thermal tests and X-RAY to check whether the welding wires are abnormal before shipment, so as to reduce the chance of abnormal COB usage at the customer end.
Multi-dimensional casting of the shining star of domestic LED light sources
It is understood that Jinko Electronics’ current SMD production capacity is 1000KK/M; high-power LED products are 12KK/M; COB products are 3KK/M. Jinko Electronics' large-scale mass production capabilities directly reflect its strong ability to control product costs, and its overall cost performance is bound to be higher than that of other domestic companies.
ANNA