What are the common performance indicators of LED display screens?

LED display screens are currently commonly used for outdoor and indoor large screen displays, so how should we choose a high-performance LED display screen? LED beads are the key core component that affects their display effect. What high-precision equipment is needed in the packaging process to manufacture a high-performance LED display product? Below, we will briefly introduce the performance of LED displays.

Antistatic ability


LED belong to semiconductor devices and are sensitive to static electricity, which can easily lead to static failure. Therefore, anti-static ability is crucial for the lifespan of LED displays. The failure voltage of LED's human static electricity mode test should not be lower than 2000V.

Attenuation characteristics


Generally, LED display screens require long-term operation, which can lead to a decrease in brightness and inconsistent display colors, all of which are caused by the brightness attenuation of LED devices. The attenuation of LED brightness causes a decrease in the brightness of the entire LED display screen. The inconsistent brightness attenuation amplitude of red, blue, and green LED leads to inconsistent colors on the LED display screen, resulting in the phenomenon of screen distortion. A high-quality LED display screen can effectively control the amplitude of height attenuation and adjust its brightness.



The brightness of LED display beads is a key factor in determining the height of the display screen. The higher the brightness of the LED, the greater the residual current used, which is beneficial for saving power and maintaining the stability of the LED. If the chip has been set, the smaller the LED angle, the brighter the LED brightness. If the viewing angle of the display screen is small, a 100 degree LED should be selected to ensure sufficient viewing angle of the LED display screen. LED display screens with different spacing and different line of sight should consider brightness, angle, and price to find a balance point.

Angle of view


The angle of LED beads determines the viewing angle of the LED display screen. At present, most outdoor LED displays use elliptical patch LED beads with a horizontal viewing angle of 120 degrees and a vertical viewing angle of 70 degrees, while indoor LED displays use patch LED beads with a vertical viewing angle of 120 degrees. For example, LED display screens on highways use circular LED with a 30 degree viewing angle. The LED display screens in high-rise buildings require a higher vertical viewing angle, and larger viewing angles reduce brightness. So the choice of perspective depends on the specific purpose.

Failure rate


A full-color LED display screen is composed of pixels consisting of tens of thousands or hundreds of thousands of red, green, and blue LED. The failure of any color LED will result in the overall visual effect of the LED display screen.



The full-color LED display screen is composed of countless pixels composed of red, blue, and green LED. The brightness and wavelength of each color of LED play a decisive role in the brightness, white balance consistency, and brightness consistency of the LED display screen. LED have angles, so full-color LED display screens also have angle directionality. When viewed from different angles, their brightness will increase or decrease. The angle consistency of red, green, and blue LED seriously affects the white balance consistency at different angles, affecting the color fidelity of LED display screen videos. To achieve consistency in matching the brightness changes of red, green, and blue LED at different angles, it is necessary to design the packaging lens The scientific design of raw material selection depends on the technical level of the supplier. When the consistency of LED angles is poor, the white balance effect of the entire LED display screen at different angles is not optimistic.

Life span


The average lifespan of LED display screens is 100000 hours. As long as the quality of LED devices is good, the working current is appropriate, the heat dissipation design is reasonable, and the production process of LED display screens is rigorous, LED devices are one of the most durable components in LED display screens. The price of LED devices accounts for 70% of the price of LED display screens, so the quality of LED display screens is determined by LED devices.



The size of LED devices is also related and important, as it directly affects the pixel distance, i.e. resolution, of LED display screens. Generally, 5mm oval lights are used for outdoor display screens above p16, while 3mm oval lights are used for outdoor display screens of p12.5, p12, and p10. When the spacing remains constant, increasing the size of LED devices can increase their display area and reduce graininess.

Post time: Jan-22-2024