In the exhibition of NEPCON Japan 2017 and Light Tech Expo 2017, LED and lighting related technical seminars attracted the most attention except for the trend of automotive lighting market, which was the seminar of UV LED related development.

Cooperate exhibition general assembly this year, the technical seminar that holds by host number, rich degree, year by year promotion and adjustment, the unit that plans seminar can be said to be quite intention is in plan. Many sessions have been held, including wearable devices, robots, intelligent factories, automobile electricity and lighting technologies. This session also includes a seminar on artificial intelligence to prepare for the AI artificial intelligence exhibition to be held later.

UV LED this year the exhibition of the seminar is focused on the possibility of 'deep ultraviolet DUV LED', by famous UV LED Japanese manufacturers, sg intrauterine chun technology leaders, and the Japanese giant agms Microdevices company responsible for the research and development of the research and development center, chief executive and executive service itself is agms UVC project of long straight, head of the foreign parent company, respectively discusses the UV LED in the application while the possibility and trend, and the application in a single crystal substrate of the characteristics and application of deep UV DUV LED, this session is full packed, There are quite a few Japanese and Korean manufacturers to focus on the trend of UV LED.

1. Japanese equipment looks forward to more high-power UV LED application in water purification system

Miyagi pointed out that the current power of UV LED in the market is not high enough, which is naturally subject to many technical restrictions on the generation of UV LED, but the company has been in mass production of 50mW products, the target is to achieve 100mW of UV LED.

He further stated that low-power UV leds are used for chemical analysis, DOM Monitor and other purposes, while 10mW to 30mW products are used for low-flow sterilization and purification, whether for water treatment or air cleaning. Products of 30mW and 50mW are suitable for medium flow sterilization and purification, as well as resin curing and other applications.

In specifications ranging from 50 mW to 100 mW, this UV LED is suitable for large flow sterilization and purification, high speed resin hardening and medical robot applications. At present, these applications, or the world of high voltage UV lamp, UV LED is difficult to cut, the main reason is not enough power.

Miyauchi explained that the current technology of Japanese machinery has raised the specification of standard products from 30mW to 45mW. At the direction voltage of 6V, the removal efficiency of UV ultraviolet light has been successfully improved, and the thermal resistance value has changed from 15K/W to 7K/W.

He pointed out that compared with mercury lamp competition, UV LED, of course, is not as efficient as UV mercury lamp tube, but UV LED reaction speed is fast, do not need a heat engine, so the overall efficiency of the device is of course better, as long as the power can be improved in the future, the application range will be broader.

With its current technical capability and receiving orders and demands from customers in the market, the future potential of this aspect is worth looking forward to.

2. Asahi chemical: banning mercury lamps in 2020 will drive UVC LED business opportunities

Hisaishi naoyang of asahi chemical, a Japanese manufacturer, said that due to the mercury ban treaty signed by 92 countries in Japan in October 2013, by 2020, the import and export of new products using mercury in batteries, lamp tubes and bulbs is prohibited in principle, which actually gives UVC leds a more potential business opportunity.

Compared with mercury UV lamp, UVC LED has the advantages of not using heavy metal mercury and does not need the warm-up time of mercury lamp from 1 to 15 minutes. The reaction time of UV LED is extremely fast. Furthermore, UV leds can specify the necessary wavelengths to emit light, generating full power, long life, and low price for future applications.

What's more, UV LED, with impact resistance, also because the size of the lamp is not as straight as the UV lamp, so it saves the space inside the device, has a higher degree of freedom in product design, and innovative collocation application clever.

For voltage, high voltage alternating current is not required either, as long as direct current of 6 to 12 volts is used, and current can be reduced from 0.5 to 2 amperes to as little as 0.02 to 0.3a.

There are also advantages in thermal design. There is no large amount of high thermal radiation of mercury lamp. The foundation of heat dissipation can be achieved in the material.

Asahi chemical has made considerable progress in material science and industry achievements. Their 2-inch AIN single crystal substrate can improve the high force of UV LED based on absorption rate and other factors when used together with UV LED.

Director and executive officer of research and development center at asahi chemical devices and himself project manager of UVC at asahi chemical's parent company.

3. The mature UV LED market will take off rapidly

LEDinside observation, in the UV LED manufacturers and a number of technologies, improve the capacity and future I/o new bans production issues of mercury lamp after fermentation, the application of UV LED is more widespread, not only specific material measuring with light source, resin, water and air sterilization and purification treatment, rather than including the treatment of skin diseases with medicine, VOC gas decomposition, photocatalytic and deodorant device, and more and large amount of applications such as water treatment and sterilization. (Ivan/LEDinside