LED display applications are becoming more and more popular, you can see it everywhere in the busy streets. In the display application popularization today, do you know what has the greatest impact on the LED display performance?

Understanding the LED display industry, we all know that the biggest impact on the performance of the display is the LED lamp beads. The following LCF editor will talk to you about the LED lamp beads on the LED display impact of the eight factors.

First, the angle of view: the angle of view of the LED display depends on the angle of view of the LED lamp beads. At present, most of the outdoor LED display choose the horizontal viewing angle of 100°, vertical viewing angle of 50°of the elliptic LED, indoor LED display choose the horizontal and vertical are 120 ° of the SMD LED. highway display due to its special general selection of 30°angle of view of the round LED is enough. Some of the upper floors of the LED display on the vertical viewing angle requirements are higher. Viewing angle and brightness are contradictory, large viewing angle will inevitably reduce the brightness. The choice of viewing angle needs to be based on the specific use to decide.

Second, brightness: the brightness of the LED lamp beads is an important determinant of the brightness of the LED display. the higher the brightness of the LED lamp beads, the greater the margin of the use of the current, to save power consumption, to maintain the stability of the LED has the advantage of the LED. the LED has a different angle value, in the case of the chip brightness has been determined, the smaller the angle, the LED is the brighter, but the LED display of the viewing angle is the smaller. Generally should choose 100 degrees of LED to ensure that the LED display enough viewing angle. For different point spacing and different viewing distance of the display, should find a balance on the brightness, angle and price.

Third, the failure rate: because the full-color LED display screen by tens of thousands or even hundreds of thousands of groups of red, green, blue LED pixels composed of three kinds of pixels, the failure of any color LED will affect the overall visual effect of the LED display. Generally speaking, according to industry experience, in the LED display screen began to assemble to aging 72 hours before shipment failure rate should not be higher than three ten thousandths of a percent (refers to the LED lamp beads itself caused by the failure).

Fourth, anti-static ability: LED is a semiconductor device, sensitive to static electricity, very easy to cause static electricity failure, so anti-static ability of the LED display life is critical. Generally speaking, the LED human body electrostatic mode test failure voltage should not be less than 2000V.

Fifth, life: the theoretical life of the LED device is 100,000 hours, much larger than the working life of other parts of the LED display, so long as the LED device quality assurance, the right current, PCB heat dissipation design is reasonable, LED display production process is rigorous, the LED device will be one of the most durable parts of the LED display machine.

Six, attenuation characteristics: LED display after a long time work will appear brightness drop and display color inconsistent phenomenon, mainly due to the brightness of the LED device attenuation caused by the attenuation of LED brightness will cause the display screen brightness reduction. Red, green, blue LED brightness attenuation amplitude inconsistency will cause the LED display color inconsistency, that is, we often say that the display screen phenomenon. High-quality LED devices can well control the brightness attenuation. According to 1000 hours at room temperature light 20mA standard, red attenuation should be less than 2%, blue, green attenuation should be less than 10%, so blue, green LED in the display design try not to use 20mA current, it is best to use only 70% to 80% of the rated current.

Seven, size: the size of the LED device affects the LED display pixel distance, that is, the resolution. 5mm oval lamp is mainly used for P16 outdoor LED display, 3mm oval lamp is mainly used for P12.5, P12, P10 outdoor display, 3528 chip LED is mainly used for P6, P8 indoor LED display, 2020 type chip LED Mainly used for P2, P3 and other indoor LED display. Under the premise of the same pitch, the LED device size increase, can increase the display area, reduce the sense of grain, but due to the black area decrease, it will reduce the contrast; on the contrary, the LED size reduction, reduce the display area, the sense of grain increases, the black area increases, increase the contrast.

Eight, consistency: full-color LED display is composed of countless red, green, blue LED pixels spelled out, the brightness of each color LED, wavelength consistency determines the consistency of the brightness of the entire display, white balance consistency, chromaticity consistency. As the LED is angled, to achieve the red, green, blue three kinds of LED in different angles to match the consistency of the change in brightness, need to be in the package lens design, the original material selection on the strict scientific design, which depends on the technical level of the packaging supplier.LED lamp beads can be used to measure the angle of consistency of LED angle tester, for the medium and high-grade displays is particularly important.

Understanding the impact of LED beads on LED display factors, to choose a high-quality LED display is very helpful.