Rounding LED display is the most key components: LED lamp bead

Full color LED display is the most key parts of the LED lamp bead. There are three reasons:

First, the LED is spoken by the largest number of the key device in the full color machine, every square metre can use only a few thousand to tens of thousands of LED;

Second, the LED is to determine the main body of the whole screen optical display performance, a direct impact on the audience to display;

Third, the LED display screen as a proportion of the overall cost in most, ranging from 30% to 70%.

How to identify LED display lights, strengths and weaknesses

A: look at the solder joint. Regular LED lamp belt manufacturer production of LED lights is to use SMT process, with solder paste and reflow soldering process.

2: the quality of FPC. FPC divide into two kinds, apply copper and rolling of copper coated copper copper foil is out, scan it can see it from the joint of welded plate and FPC.

Three: look at the LED lamp belt surface cleanliness. If the LED lamp belt of the SMT process, its surface cleanliness is very good, can't see any impurities and stain.

Four: look at the LED lamp with chips and production technology, is can't tell the difference to the eye, with aging equipment and testing equipment, if you put a few manufacturer of LED on aging instrument with large current aging 24 hours or longer, you again to measure the LED brightness of several manufacturers, look at the LED luminous intensity attenuation, minimum damping least that quality is the best.

LED lights, what are the impact on the LED display

1, the Angle of view

The Angle of LED display depends on the Angle of LED lamp bead. To date, most outdoor display screen choose horizontal Angle 100 °; 50 ° and vertical perspective; Elliptical LED, indoor display, choose level is 120 ° from vertical; The SMD leds. Display on the highway 30 ° is generally selected due to its particularity; Perspective of round LED is enough. Some buildings on display for vertical Angle of the demand is higher. Perspective with brightness incompatible, big Angle will inevitably reduce brightness. View selection need according to the specific purposes to decide.

2, brightness

LED brightness is the determinant of display brightness. LED brightness is higher, the greater the allowance of using current, is good to save electricity, stabilizing the leds. LED value has a different point of view, in the case of chip brightness is set, the smaller the Angle, the LED is more bright, but the smaller screen view. Generally should choose 100 degrees of LED display screen enough to ensure that the point of view. In view of the different spacing and different visual display, should be in brightness, Angle and find a balance on the price.

3, the failure rate

With full-color displays by tens of thousands or even hundreds of thousands of set of red, green, blue three kinds of LED pixels, any color LED display screen overall failure will affect visual result. Generally speaking, according to industry experience, at the beginning of the LED display assembly to aging failure rate of 72 hours before delivery should be no more than three over ten thousand (referring to the LED lamp bead itself causes of failure).