How to improve high color rendering and reduce cost of LED display
Speaking of LED display, it can be seen everywhere now. With the continuous expansion of the security market, LED display technology continues to mature, and the quality has also developed by leaps and bounds, but there are still many problems, but don’t be afraid, solve The plan is out.
The first is from the perspective of high color rendering: LED displays have many light and color qualities, including color temperature, color rendering, light and color fidelity, light and color naturalness, color recognition, and visual comfort. Here we only discuss solving the problem of color temperature and color rendering. The production of high color rendering LED display light source will lose more light efficiency, so these two factors should be taken into account in the design. Of course, in order to improve high color rendering, we must also consider the combination of RGB three primary colors to achieve:
RGB multi-chip combination;
Phosphor plus chip.
The second is high luminous efficiency: the luminous efficiency of LED displays can be said to be an important indicator of energy-saving effect. At present, my country needs to strengthen the luminous effect. To truly achieve high luminous efficiency, we must solve related technologies from all aspects of the industry chain. Question, then how to achieve high luminous efficiency? This article will specifically discuss the technical problems to be solved in several links such as epitaxy, chips, packaging, and lamps.
Improve internal quantum efficiency and external quantum efficiency;
Improve package light extraction efficiency and reduce junction temperature;
Improve the light extraction efficiency of lamps.
Again, in terms of high reliability: mainly including failure rate, life and other indicators. However, there are different understandings and elaborations in the application. High reliability refers to the ability of a product to complete a specified function under specified conditions and within a specified time. The LED failure categories mainly include severe failure and parameter failure, and the lifespan is the characteristic value of product reliability: generally refers to the statistical average value. For a large number of components, the lifespan of LED devices is the meaning of using this description. However, the factors affecting the reliability of LED display products include chip manufacturing, packaging, thermal resistance, heat dissipation, etc. Now that this is said, I hope that enterprises will make two requirements on the basis of comprehensive quality control of LED display products:
reduce failure rates;
Extend the wear and tear time.
The last is to reduce the cost of products: At present, many consumers feel that the price is too high when purchasing LED displays, so many LED display entrepreneurs have also taken corresponding measures to reduce costs, in addition to mass production. , Mainly technically take measures to reduce costs, mainly in epitaxial chips, packaging, driving, heat dissipation and other aspects to reduce costs, so as to fundamentally solve the cost problem of display products. Specifically, the cost is reduced from the following four aspects.
Reduce the cost of epitaxial chip link;
Reduce the cost of packaging;
Reduce the cost of lamps and lanterns;
Reduce the cost of other supporting links.
However, in terms of cost reduction, it is difficult for LED display manufacturers to reduce costs alone. Only when the costs of other suppliers such as epitaxial chips, packaging, and lamps are reduced, will the price of the display be finally reduced.
In this comparison, whether many problems have been solved, so it is the best policy to save costs and achieve sustainable development.