The solution to the four technical problems of LED display screen

Chinese is LED display manufacturers world focus, LED display 80% of the world's Chinese from now. Lift the screen, we are not strangers. Today's streets, shopping malls, stations, airports can be seen everywhere. With the deepening of the application and popularization of the market, LED display technology is maturing, but there are still four major technical problems plaguing many manufacturers.

First from the high color: LED display screen color quality, including color, color, light color, natural color fidelity degree, tone recognition, visual comfort etc.. Here we only discuss to solve the problem of color temperature and color rendering, the production of high color rendering LED display light source, will lose more light efficiency, so in the design to take care of these two factors. Of course, to improve the color rendering must also consider the RGB three color combination to achieve:

Multi color phosphor;

RGB multi chip combination;

Fluorescent powder and chip.

Followed by high efficiency for light effect LED display can be said to be an important indicator of the energy saving effect, at present our country in the light effect remains to be strengthened, to really want to achieve high efficiency, to solve the technical issues from all aspects of the industry chain, how to realize the high efficiency of light? In this paper, we will discuss the technical problems to be solved, such as extension, chip, packaging, lamps and so on.

Improve the internal quantum efficiency and external quantum efficiency;

Improve the packaging light efficiency and reduce the junction temperature;

Improve the light extraction efficiency of lamps.

Again from high reliability for: including the failure rate, and other indicators of life. However, there are different understanding and elaboration in the application, and the high reliability refers to the ability of the product to achieve the specified function under the specified conditions and within the specified time. The failure of LED the main categories of serious failure and failure parameters, and life is the characterization of the product reliability value: generally refers to the statistical average value, for a large number of components, the LED device is used in this description of the meaning of life. However, the factors that affect the reliability of LED display products are chip manufacturing, packaging, thermal resistance, heat dissipation and so on. Since it comes to this, I hope the company on the LED display products in the implementation of total quality control on the basis of the two requirements:

Reduce failure rate;

Extended loss failure time.

Is finally in reducing the cost of goods: at present, many consumers in the purchase of LED display would think the price is too high, so for the LED display many entrepreneurs also have taken the appropriate measures to reduce the cost in mass production, mainly from the technical measures to reduce the cost of the way that is mainly to reduce costs in the epitaxial chip, package, drive, cooling and other aspects, so as to solve the cost problem of display products fundamentally. Specifically from the following four aspects to reduce costs.

Reduced epitaxial chip link cost;

Reduce packaging costs;

Decrease in the cost of the lamp;

Reduce other ancillary costs.

But reduce the cost of the problem, only by the LED display manufacturers is difficult to reduce the cost, the only other suppliers such as epitaxial chip and packaging, lighting costs are lower, the price will eventually reduce the display.