The LED industry technology continues to improve, and many of them are constantly innovating and applying in the application field. The following are the three mainstream trends of LED in the next five years.
1, high voltage LED
High-voltage LEDs are a new class of LEDs with many advantages. Light sources with a VF value of about 3.2V have long been used in countless luminaires, and the practice of multiple LEDs in series is also the first application of high-voltage LEDs. The second is that LED upstream chip manufacturers through a special process, a number of LED chips with a VF value of about 3.2V are connected in series on a substrate, leading to one or two PADs, also known as high-voltage LED chips. After the package manufacturer takes the chip, it is made into a high-voltage LED light source.
High-voltage LEDs have high luminous efficiency, low power requirements, linear power supply combined with cost savings, and reduced light decay. There are also problems such as cost, power dissipation and heat sink. In short, the high-voltage LED is a characteristic LED, which provides people with a choice of the most suitable technology for different occasions.
2, medium power LED
With the take-off of the LED lighting market and the change in LED specifications for backlights, the mid-power market has become the mainstream specification for the LED industry in 2013, and the output value has surpassed the high-power market for the first time. Among them, LED bracket material LED driving current can reach 1~2W, which can supply medium power and medium and high power market at the same time. LED packaging factory actively expands EMC production capacity. After PCT bracket material improvement, LED packaging factory also actively cuts into PCT products. Medium power market.
In addition, flipchip products also entered the mid-power market in 2014. With the rise of the mid-power market, EMC products have become the shining star of 2013. Among them, the Nissan EMC product 757 series hit the EMC name in the market in 2013, and EMC products have a high share of the direct-lit backlight and lighting market. Sexual characteristics, coupled with accelerated declines, LED packaging plants are actively investing in EMC product development and capacity expansion.
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After the PCT bracket material was improved by the manufacturer, the driving power was pulled from the previous 0.7W to 1~1.2W. In addition to pulling away the distance from the PPA bracket, it also cut into the 0.7-1.2W market of the original EMC products. The cost-effective PCT product is also an important power product line for some LED packaging plants in 2014.
In 2013, the mid-power market exceeded its high output for the first time. Philips, which originally focused on the high-power market, also actively cut the mid-power market in 2013. In addition to the already launched mid-power products, Philips also plans to have a smaller size, better luminous efficiency per unit area, and a five-sided, high-brightness flipchip product to guide the mid-power market, showing its alignment. The degree of fancy in the power market.
3, solar LED lighting Solar LED lighting integrates the advantages of solar energy and LED. The system consists of a solar cell module part (including a bracket), an LED lamp head, a control box (with controller and battery inside) and a lamp pole. The solar panel has high light efficiency and is very favorable for the wind-resistant design of the system; the lamp head portion is integrated with a 1W white LED and a 1W yellow LED integrated on the printed circuit board to form a lattice with a certain spacing as a planar illumination source.
The working principle of the system is simple. The solar cell made by the solar photovoltaic effect principle receives solar radiant energy and converts it into electric energy output. The battery is stored in the battery through the charge and discharge controller, and the illumination at night is gradually reduced. The charge and discharge controller detects At this voltage value, the battery discharges to the lamp cap. After the battery is discharged for 8.5 hours, the charge and discharge controller operates and the battery discharge ends. The main function of the charge and discharge controller is to protect the battery.
The initial investment in solar LED lighting remains a major issue. However, the solar cell's luminous efficiency is gradually increasing, and the price will gradually decrease. Similarly, the LED light efficiency in the market is rapidly increasing, while the price is decreasing. Compared with the renewable, clean and pollution-free solar energy and the environmental protection and energy saving of LEDs, conventional fossil energy is becoming increasingly tense and polluting the environment. Therefore, solar LED lighting as an emerging outdoor lighting, showing us will be endless vitality and broad prospects.
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