Method for improving light efficiency and reducing energy consumption of LED electronic display screen

Introduction: a part of the photons generated in the light-emitting layer or absorbed in the LED chip, or constantly reflected in the LED chip, the chip can not be LED.

First, the definition of LED electronic display light efficiency

The luminous flux emitted by the light source is divided by the power consumed by the light source. It is an important indicator of measuring light source energy saving. A part of the photons generated in the light emitting layer or absorbed in the LED chip, or constantly reflected in the LED chip, the chip can not be LED. Therefore, the external quantum efficiency is lower than the internal quantum efficiency. Luminous efficiency of 100lm/W white LED, its input power is only 32% as light energy output to the outside. The remaining 68% is converted into heat energy.

Method for improving light efficiency and reducing energy consumption of LED electronic display screen

Two, how to improve the efficiency of LED electronic display screen, reduce costs

1, multi chip packaging resulting in decreased yield and not easy to achieve the consistency of light.

2, the consistency of light and color, how to do the consistency of light is very difficult, but also increase the cost.

3, the higher the reliability of high power LED package, the relative cost of raw materials, making the cost is not easy to fall.

4, LED should meet the requirements of the quality of consumers.

5, warm white and high color performance problems. The softness and high efficiency will be reduced Zeguang.

6, high power LED packaging process is very complex, high proportion of artificial, not easy to produce to reduce costs.

As a kind of green and energy-saving light source, LED is favored by people, and it will also be the mainstream media to lead the future of display technology. In order to break through the bottleneck of development of this industry is restricted, many novel solutions are proposed, and the verification of the theory, most of which have entered the testing stage, some success has been achieved, and laid a solid foundation for the final industrialization.