How to solve the LED display technology of '3 tall one low'
'3 tall one low' is actually refers to the LED display technology in high color rendering, high photosynthetic efficiency, high reliability and low cost. How to achieve low cost and can let the LED display quality can achieve 'three highs'? This requires a series of measures on the LED display industry chain each link. Such as adopting new technology, new structure and new technology, new materials, etc. Now LED display as a new industry, the technology is very seriously, is the core problem in the process of the whole.
the following mainly from '3 tall one low' that is, high color rendering, high photosynthetic efficiency, high reliability and low cost for analysis:
first from high color rendering, LED display light quality a lot of color, including color temperature, color rendering, light color fidelity, light color natural and tonal recognition, visual comfort, etc. Here we only discuss the solve the problem of color warm color rendering. Make high color rendering full-color LED display light source, lose more lights, so to take care of in the design of these two factors. Of course to improve high must also consider the RGB trichromatic color combination. Here I have three kinds of methods:
1. More gezer phosphors.
2. RGB combination of chip.
3. Fluorescent powder and chips.
is the high photosynthetic efficiency: for LED electronic display lighting energy saving effect can be said to be the main index, at present our country on the photosynthetic efficiency effect remains to be strengthened, to really to do high photosynthetic efficiency, must be considered in the industrial chain each link related technical problems, so how to realize the high photosynthetic efficiency? This article divides the struggle for the extension, chips, encapsulation, several links such as lamps and lanterns to solve technical problems.
1. Improve the internal quantum efficiency and the external quantum efficiency.
2. Improve the light packaging efficiency and reduce the junction temperature.
3. Improve the efficiency of the take light of lamps and lanterns.
again from high reliability: mainly includes indicators such as failure rate and life. But there are different understanding and in the application. High reliability refers to the product under prescribed conditions and time, complete the required function. LED category main failure has serious failure and parameters. And life is the reliability of the product attribute value. If LED display manufacturers want to get good control on display comprehensive quality will need to do a good job in the following two points:
prolonged wear failure.
to reduce failure rate.
the final is on reducing the product cost: at present a lot of consumer are buying LED display all the time think the price is too high, so the struggle for the many LED display manufacturer also have to take the corresponding measures, to reduce the cost in addition to mass production, mainly from the technical measures to reduce the cost of ways and means. Mainly in the epitaxial chips, encapsulation, drive, the respect such as heat dissipation to reduce costs, so as to fundamentally solve the problem of the cost of the led display products. Referring to the concrete from the following four aspects:
epitaxy chip link cost reduction methods.
encapsulation link cost reduction methods.
the lamps and lanterns chip link cost reduction methods.
other necessary costs will be reduced by more than
mainly from high color rendering, high photosynthetic efficiency, high reliability and low cost of four major technology to solve the main technology and take corresponding measures, LED display and, in general, in addition to the adoption of new technology, new technology, new structure, new materials and other measures to achieve high photosynthetic efficiency of LED display, high color rendering, high reliability and low cost, from a deeper level, ought to improve the quality of energy efficiency and light color as a demand for higher full-color LED display, to provide products for people's real needs sex! Only LED manufacturer to start from the most basic, from all aspects of production, coupled with various displays each material supply chain coordination, to completely improve the comprehensive quality of LED display.
edit: Steve