Five factors that determine the quality of a full-color LED display
As a new cultural media tool, full-color LED display screen has been widely used in various fields, such as exhibitions, seaports, airports, subway stations, large and medium-sized sports culture and exhibition halls, intelligent transportation field and other basically all related system software and fields.Choosing an LED with good features is the basic criterion for making an excellent LED display.But what determines the quality of a full-color LED display?Below by cheng Xun wisdom show professional and technical personnel for everyone to introduce.
1. Symmetry and clarity
The main reason for LED display clarity improvement is flatness rather than physical clarity interval, flatness LED display information screen surface flatness to within ± mm, to ensure that the display information image does not distort, part of the protrusion or concave will cause the display visibility Angle of blind area.The key to the smoothness is the production process.
2. Brightness and Angle
The display Angle should deal with the problem of luminous flux consumption. The brightness and visibility perspective the brightness of indoor full-color screen should be above 800cd/m2, and that of outdoor full-color screen should be above 1500cd/m2, so as to ensure the normal operation of the display screen. Otherwise, the image of displayed information cannot be clearly seen due to the low brightness.The size of the brightness is determined by the quality of the LED core tube.
3. The sharpness of the display screen cannot be controlled
There are many reasons why the clarity of the display can not be controlled, among which the most critical reason is "LED failure".The main cause of LED failure can be divided into two levels: one is the poor quality of LED itself;Second, the operation method is not good.According to the analysis, we sorted out the LED failure mode and the corresponding relationship between the two main causes.
4. Energy consumption and energy consumption grade
Improving LED special effects and reducing display energy consumption is a key development prospect of LED display technology. It has the following great significance: First, environmental protection and energy saving, energy saving and emission reduction, protect the ecological environment;Second, reduce the investment of power engineering capacity expansion, mechanical and electrical equipment and cooling equipment;Three is to save water and electricity costs to reduce operating costs;Four is to reduce display temperature rise;Five is to slow down the LED attenuation coefficient rate;Sixth, improve the reliability index;Seven is to increase display life;Eight is to reduce the display optical main parameters of temperature drift, smooth the actual effect of the image.
5, life
The life of the LED display is decision by a variety of factors, for display in work not every only LED always overworked, display in normal play songs under the condition of variety show, the life of the display period should be LED life period of 6 ~ 10 times, when the LED work in the case of small electrical flow can longer service life.Thus, the use of the well-known brand LED display life of about 50,000 hours.
Honesty - wisdom of professional and technical personnel to decision making for guys detail full-color LED display quality of the key factors of smoothness and clarity, brightness and Angle, clarity is unable to control, energy consumption and energy consumption level, the five life level, relative to traditional lighting lamps and decorative lamps and lanterns, low output power for a few times, and the practical effect is good.In the driver IC design, greatly increased the energy saving and emission reduction wiring, packaging application of high brightness LED lamp, constant current power supply bottom pressure and other technical, promote the actual effect of energy saving and emission reduction is remarkable.
Coordinating editor AJX
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