Future trends in LEDs: Will lasers, OLEDs and graphene replace LEDs?

LED is also called light-emitting diode. It has many advantages such as low heat generation, high brightness, environmental protection and long life. It is widely used in various fields such as indication, display, decoration, backlight, general illumination, etc., replacing traditional lighting. One of the greatest inventions of the twentieth century. For the LED industry, disruptive innovation is eyeing.

So, in the future, who will have the life of LED?

Future trends in LEDs: Will lasers, OLEDs and graphene replace LEDs?

Disruptive technology

激光 Laser lighting

⊙ OLED

石墨 graphene

Laser lighting instead of LED lighting?

In recent years, with the laser lighting of the father of the blue LED, Nakamura repaired the laser, publicly said: "In the next 10 years, laser lighting will replace LED lighting. "Laser lighting is also gradually seen by the industry as a potential threat to LEDs.

Laser illumination is divided into visible laser illumination and infrared laser illumination:

1. Visible laser illumination is divided into the following two according to the principle:

1. Blue light excitation phosphor realizes white light illumination;

2, red, green and blue laser synthetic white laser, or true color light illumination.

Second, infrared laser lighting

Infrared laser illumination is the use of semiconductor materials to release photons in the process of cavity and electron recombination to release photons to generate light energy, and then photons form a laser beam in the resonant direction of the photons. It is mostly used for night vision and night camera monitoring lighting.

The efficiency of laser illumination is thousands of times higher than that of LED, which not only increases the projection distance, but also improves safety, while being smaller and more compact. In addition to the field of lighting, laser display will have a wider application in projectors, digital cinema, television, stage lights, large screen splicing, automotive and other fields. A laser light, lighting 100 square meters area no problem. But because the laser is now too expensive, the application rate is not high. Mainly used in special lighting markets, such as automotive lighting, such as Osram, at the CES launched a new automotive application technology laser headlights. And if the price of lasers falls again in the future, laser headlights will dominate the automotive market. As for general lighting, it depends on whether there is a breakthrough in substrate performance and price.

OLED ignition technology revolutionary fire?

From small and medium-sized displays to large-size displays to lighting, OLEDs are leaping along with improvements in production processes and product performance, and will their strong development threaten the dominance of LEDs?

OLED is called “Fantasy Display” by the industry because of its unique advantages, and it is also recognized as the next-generation display development direction. Compared to the widely used LCD screens today, OLEDs can be made thinner because the pixels themselves can emit light. The OLED core material is a solid thin flexible organic material with a very thin thickness. With the flexible substrate and the cover plate, an OLED flexible display capable of exhibiting various curved shapes can be manufactured.

At present, OLED can be mass-produced automatically, and the quality is increasingly stable. It has ultra-thin, flat illumination, uniform brightness, good glare control, large angle bending for more modeling, etc. Its light effect can reach 60- 80 lumens. It is possible that the LED lighting cake has not been digested and will be transformed by OLED.

Once the OLED is subverted, the OLED may have the life of flat lamps, downlights, ceiling lamps, and wall lamps, and the lighting manufacturing industry will be separated from the lighting industry and enter the home improvement industry. Of course, OLEDs also have their disadvantages, such as manufacturing costs and size, but what about LEDs not a few years ago? Subversive innovation is not a perfect product when it comes out, there are too many problems, but as long as it is far more than you at one point, it is enough - this point may be that it has a huge advantage in experience.

Graphene subverts traditional LEDs?

"If the 20th century is the century of silicon, then graphene will create a new material era in the 21st century, which will bring substantial changes to the world." Graphene, known as "universal material", is currently the world's most Thin is also the hardest nanomaterial, and many scientists are trying to enter the field of illumination.

In view of the excellent thermal conductivity and electrical conductivity and high transparency of graphene materials, the LED industry has begun to try to use graphene in the field of LED chips and heat dissipation. As early as 2015, the National Graphene Institute of the University of Manchester in the UK developed a new graphene bulb with a more robust structure and lower price than LED bulbs. According to researchers, the new graphene bulbs are still based on LED technology development, greatly enhance their performance and service life through magical graphene molecules, and hopefully cheaper than traditional LED bulbs. The innovative technology of the graphene bulb is a dimmable bulb, the bulb has a filament-shaped LED lamp, and the outer layer of the LED lamp is coated with graphene, and the graphene has strong conductivity, which can make the bulb use time is extended, and Reduce energy consumption by 10%.

Professionals also believe that the replacement of "silicon" will bring a subversive change to the LED chip industry. According to the Massachusetts Institute of Technology, graphene technology can increase the speed of chips by a million times. If it can be successfully commercialized, this is undoubtedly a new revolution for the chip industry. In the past few decades, silicon has been the first choice for the manufacture of chips, and the emergence of graphene, in the future, will replace silicon as the main material of the chip.

Although at present, the graphene industry is still in the early stage of development, especially the entire industrial chain of graphene has not been unblocked and integrated. But who can predict in the future? A subversive industrial revolution sweeping the globe from graphene may also oscillate the lighting industry.

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