Advantages of LED lamp bead: As a light-emitting device, LED lamp bead has attracted people's attention because of its advantages over other light-emitting devices. To sum up, LED has the following advantages:
(1) Long service life: As a conductor solid light-emitting device, LED has a longer service life than other light-emitting devices. Its brightness half-life can usually reach 1 thousand hours. If LED is used to replace the traditional automobile lamp, its service life will be much longer than that of the automobile itself, and it has the characteristics of life-long repair and replacement.
(2) Low power consumption: LED is a low-voltage working device, so it consumes the least power at the same brightness, which can greatly reduce energy consumption. On the contrary, with the development of technology and materials in the future, it will have higher luminous efficiency. It has been calculated that if all lighting lamps in Japan are replaced by LEDs, two large power plants can be reduced, which is very beneficial to environmental protection.
(3) Fast response time: LED can generally respond within tens of milliseconds (ns), so it is a telling device, which is beyond the reach of other light sources. The high-position brake light made of LED greatly improves the safety of the car at high speed.
(4) Small size, light weight and resistance to shock: these are the inherent characteristics of semiconductor solid devices. Color LED can make all kinds of clear and exquisite display devices.
(5) Easy dimming, color matching and great controllability: As a light-emitting device, LED can control brightness through the change of current flowing, and can also realize color change and adjustment through the configuration of LEDs with different wavelengths. Therefore, the light source or display screen composed of LED is easy to meet the needs of various applications through electronic control, and it is extremely difficult to be compatible with IC computers. In addition, the application of LED light source is not limited in principle, and it has strong plasticity and can be extended at will to realize building block assembly. At present, the color display screen of large screen belongs to LED.
(6) The light source made of LED does not contain environmental pollutants such as mercury and lead, and will not pollute the environment. Therefore, it is well-deserved that people call LED light source "green" light source.