It is undeniable that with more and more attention paid to UV LED curing technology, the traditional mercury lamp light source is gradually replaced by UV LED light source in many applications.
According to tang, "the market share of UV LED will increase rapidly this year, and it is expected that the overall market will soon break out. In addition, it is believed that UV LED will be the first to break out in the fields of industrial photocuring, exposure machine and fluorescence agent detection.
According to pei xiaoming, vice-president and CTO of ruifeng optoelectronics, "the application threshold of printing, manicure and plant lighting is relatively low, the chip resources are not limited, and the efficiency can also meet the application level requirements through some integration methods, which will become the first market to break out."
In terms of chip technology, UVA LED(315-405nm) has begun to mature at present (but there are many problems, such as the product's anti-static capability and poor reliability under 365nm in low band). In terms of packaging technology, UVA LED has relatively low requirements for packaging (except for the industrial market).
"There are high expectations for an outbreak of UV curing, but most UV curing is used in industrial markets, which is very demanding for the system," said wu gan, general manager of hongli.
Indeed, the application of UV curing requires entrants for the LED are quite familiar to use, the printing ink (light oil), power drive, machine causing interference (current wave, electromagnetic vibration, machine operation thermal disturbance, etc.), oil and gas environment, printing materials, running speed and cooling system to have enough understanding and the corresponding solutions.
"So I don't think China's industrial-grade curing is going to happen in a very short period of time. However, in some areas of light curing such as simple systems of ink, paint, paint light curing areas (especially the handheld light curing areas) will erupt in advance.