UV LED curing market usher in a new round of growth cycle, the market application is fully blooming

The UV curing market is ushering in a new round of growth cycle. On the one hand, the UV LED technology is constantly maturing, and on the other hand, the market demand for UV LED-based applications is becoming large-scale.

Recently, Phoseon Technology, an LED curing solution, has released an upgraded FireLine·FL400 LED curing solution that boosts the power of the light source by 25% to 24W/cm2.

Designed for the most demanding printing, coating and adhesive curing applications, the FireLine FL400 delivers superior performance today. The solution extends support length customization options and provides excellent optical uniformity to provide stable, reliable cure for demanding industrial printing applications.

Joe Becker, product marketing manager at Fengxiang Technology, said, “Customers are constantly looking for more powerful solutions to increase productivity. The more powerful FireLine FL400 offers customers an IP54-compliant, scalable solution that is capable of higher performance with higher performance. UV output jobs."

The FireLine FL400 is part of the FireLine product line, a water-cooled UV LED curing light for a wide range of applications in drum printing and conveyor (continuous) UV curing. The FireLine's structural design allows the expandable system to reach a length of two meters.

In recent years, UV LED curing technology has received worldwide attention, and in many applications, UVLED light sources have been gradually replaced by conventional mercury light sources.

China and India are emerging markets, and the government encourages UVLED manufacturers to increase UVLED production as the government advocates energy-saving light sources and supports management of the industrial, medical, and scientific sectors. LED light curing applications are currently concentrated in the three major areas of wood, ink and UV glue, and will have a large increase in the next few years.

Taking the printing industry as an example, its demand for UVLED curing equipment has increased, and the flux density for UVLED chips has been greatly improved, making UV curing occupy a large part of the UVLED technology market. At the same time, the printing industry has developed into a major user of LED curing equipment. UVLED technology has achieved great success in the field of inkjet, and has promoted the application of UVLED technology in the entire printing industry.

Taking the fiber industry as an example, the microwave medium pressure mercury-based VU lamp system has been the main method to promote the curing of fiber coatings. However, there are some fundamental limitations to such systems; for example, high power consumption, relatively short periods of use, and the use of mercury, which is now considered to be environmentally harmful.

These lamps emit a characteristic wavelength of light energy according to the ratio of ultraviolet light (25-30%), visible light (5010%) and infrared light (60-65%). Most curing energy comes from the long-wave ultraviolet (UVA) wavelength. Moreover, these lamps require a push-pull exhaust system to absorb all of the heat generated by infrared radiation (IR).

Currently, 1 to 2 kWh of electrical energy is required to cure a fiber coating per kilometer. In this way, global solidified fiber coatings consume between 400 million and 800 million kilowatt-hours of electricity per year, and generate 532 million to 1.064 billion pounds of carbon dioxide. According to the data, it is necessary to pay $53 million to $106 million (10 cents = 1 kWh) to global utility companies each year. If you use UV-LED lights, this cost can be saved by up to 80%.

As a UV LED manufacturer, Hongli Zhihui has continuously increased its supply of high power, long life and cost effective LEDs in the deep ultraviolet range. The company's UVA LEDs C5050 and C3535 (360nm-410nm) can be used in a variety of UV lighting products such as curing, nail lamps, photocatalysts, banknotes and more.

Although the UV market has good prospects, the threshold is high. Hongli Optoelectronics also believes that UV LEDs are not only technically high, but also have special raw materials and special packaging technology. Different from white lighting, special solutions are required.

In 2016, Nichia has launched a series of new UV LED products including high-power LED module NVSU333A. The NVSU333A has a wavelength range of 405nm, 385nm and 365nm with typical output powers of 4640mW, 4640mW and 3640mW respectively. The operating currents of 3.55V, 3.75V and 3.85V can be used respectively, and the beam angle is 120°. In addition, Nichia has released two other high-power UVLED products for UV curing.


LCD Display Module

High resolution
In order to realize a large-area high-resolution Liquid Crystal Display, it is usually necessary to use low-impedance metal materials, high-performance switching elements, and high-precision processing techniques. Aluminum is the most researched and used material for making TFT buses with low-impedance metals. By solving the problems of easy formation of hillocks, chemical corrosion and oxidation of aluminum, alloy methods (such as Al-Cu, Al-Si, Al-Nd and Al-Ti, etc.) and interlayer methods (such as Mo/Al/Mo) have been reported successively. , Cr/Al/Cr and Ti/Al/Ti, etc.), the alloy method is relatively simple in process, but the material has a higher resistivity. In May 1998, IBM developed a 16.3-inch ultra-high resolution (200ppi) a-Si TFT Display using Al-Nd alloy as the gate electrode, and mass production has been achieved. In April 1999, Toshiba introduced the 20.8-inch 16-SVGA (3, 200 × 2, 400) a-Si TFT-LCD, which can be said to represent the highest level of a-Si TFT-LCD in terms of high resolution and high capacity. .
According to Display Search in the third quarter of 2011, the global flat panel display research report "QuarterlyWorldw ide Flat Pane l Dis play Fore cas t Re port" pointed out that the average pixels per inch (ppi) in large-size LCD panels (>9.1 inches) ) Will grow from 88ppi in 2010 to 98ppi in 2015. The ppi of small and medium-sized LCD panels (<9.0 inches) will grow from 180ppi to 300ppi in the same period. With the rise of smart phones, mobile phones will be the most obvious application product for ppi's growth.
Another important way to realize high-resolution liquid crystal display is to develop LT p-Si TFT technology. The resolution of published p-SiTFT-LCD products is generally around 200ppi. Compared with a-Si TFT-LCD, LT p-Si TFT-LCD has a smaller volume of thin film transistors and storage capacitors. Therefore, it has a larger penetration area per inch, resulting in a brighter display. , And save more power. When the market demands higher ppi, low-temperature polysilicon (LTPS) technology becomes the best choice for manufacturing high-resolution thin-film transistor liquid crystal displays.

Contrast
The control ICs, filters and oriented films used in LCD manufacturing are related to the contrast of the panel. For general users, a contrast ratio of 350:1 is sufficient, but such contrast in the professional field does not satisfy users. Demand. Compared with CRT monitors easily reaching 500:1 or even higher contrast, only high-end LCD monitors can achieve this level. The first-tier LCD monitors on the market, such as Samsung, Asus, LG, etc., can reach a contrast ratio of 1000:1. However, because the contrast is difficult to accurately measure with instruments, you have to go and see it yourself when you pick it.
Tip: Contrast is very important. It can be said that the selection of LCD is a more important indicator than bright spots. When you understand that your customers buy LCDs for entertainment and watching DVDs, you can emphasize that contrast is more important than no dead pixels. We When watching streaming media, the brightness of the source is generally not large, but to see the contrast of light and dark in the scene of the character, the texture change from gray to black hair must be shown by the level of contrast. The 256-level grayscale in the test software In the test, more small gray grids can be seen clearly when looking up, which means that the contrast is better!a

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