As an important part of modern display technology, LED display screens are widely used in advertising, information release, traffic signs and other fields. As the core component of LED display screens, lamp beads have a decisive influence on their performance. This article will explore the influence of lamp beads on the performance of LED display screens from eight key aspects.

Viewing angle

The viewing angle of LED display screens is determined by the viewing angle of lamp beads. Outdoor display screens usually use elliptical LEDs with a horizontal viewing angle of 100° and a vertical viewing angle of 50°, while indoor display screens tend to choose SMD LEDs with a horizontal and vertical viewing angle of 120°. Special uses, such as highway display screens, may only require a 30° circular LED. There is a trade-off between viewing angle and brightness. A larger viewing angle may reduce brightness, so it needs to be selected according to the specific application scenario. Provide you with 7 differences between SMD LEDs and DIP LEDs.

Brightness

LED brightness is a key factor in determining the brightness of the display screen. High-brightness LEDs help save energy and maintain stability. With the chip brightness fixed, a smaller angle value will make a single LED brighter, but will reduce the viewing angle of the display. Generally, 100° LEDs are ideal for ensuring sufficient viewing angles. Here is some knowledge about nit brightness.

Failure rate

A full-color display is composed of tens of thousands of red, green, and blue LEDs, and the failure of any color will affect the overall visual effect. Industry experience shows that the failure rate of LEDs should not be higher than 3/10,000 from assembly to aging before shipment for 72 hours.

Antistatic ability

As a semiconductor device, LED is very sensitive to static electricity, so antistatic ability is crucial to the life of the display. The failure voltage of the human body static mode test of LED should not usually be less than 2000V.

Lifespan

In theory, the lifespan of LED devices can reach 100,000 hours, far exceeding the working life of other components of the display. As long as the quality of LED devices is guaranteed, the working current is appropriate, and the PCB heat dissipation design is reasonable, LED devices will be one of the most durable components in the display.

Attenuation characteristics

After working for a long time, LED display screens may experience brightness decline and color inconsistency, which is mainly caused by the brightness attenuation of LED devices. High-quality LED devices can well control the brightness attenuation amplitude to extend the service life of the display screen.

Size

The size of LED devices affects the pixel distance and resolution of the display screen. Different LED sizes are suitable for display screens with different dot pitches and viewing distances. Increasing the size of LEDs can increase the display area and reduce the graininess, but may reduce the contrast; conversely, reducing the size of LEDs will increase the contrast but increase the graininess. Provide you with a guide to LED commercial poster screen sizes and prices.

Consistency

The brightness, white balance, and color consistency of full-color display screens depend on the consistency of red, green, and blue LEDs. Display manufacturers usually require device suppliers to provide LEDs within a wavelength range of 5nm and a brightness range of 1:1.3. In addition, the angle consistency of LEDs is crucial to the consistency of white balance at different angles, affecting the fidelity of the video color of the display screen.

Conclusion

The quality of LED lamp beads directly affects the performance and life of LED display screens. Selecting the right lamp beads to ensure that they are optimized in terms of viewing angle, brightness, failure rate, antistatic ability, life, attenuation characteristics, size and consistency is the key to manufacturing high-quality LED displays. With the continuous advancement of technology, we expect LED displays to achieve higher performance and longer service life in the future.

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The influence of lamp beads on the performance of LED display screens