As an advanced display technology, the quality of full-color LED display is affected by multiple key indicators. When selecting LED devices, you need to pay special attention to the following important indicators, which are directly related to the performance, lifespan and viewing effect of the display.

Failure rate

The failure rate refers to the failure ratio of the LED device due to its own reasons under normal use conditions. On the LED display screen, thousands of LEDs form picture elements, and the failure of LEDs of any color will affect the overall visual effect. The failure rate of good LEDs should be kept below three ten thousandths from the beginning of assembly to aging for 72 hours before shipment.

Antistatic ability

As a semiconductor device, LED is sensitive to static electricity, so its anti-static ability is crucial. The human body electrostatic mode test failure voltage of LEDs should not be lower than 2000V. Electrostatic discharge may cause LED failure, so the anti-static ability is directly related to the life of the LED display.

Attenuation characteristics

The attenuation characteristics of LED refer to the brightness attenuation of LED as the working time increases. A good LED should have a low attenuation speed to ensure the long-term performance of the display and the stability of the white balance. Red, green, and blue LEDs should maintain a small attenuation after a 1,000-hour, 20-mA lighting test at room temperature. LED displays are divided into single-color, dual-color and full-color types.

Brightness

The brightness of the LED is a key factor in determining the overall brightness of the display screen. High-brightness LEDs help save energy and ensure LED stability. When choosing LEDs, you need to find a balance between brightness, angle and price to meet the requirements of different display screens. Here's what you need to know about nit brightness.

Consistency

The display screen is composed of countless red, green, and blue LEDs, so the consistency of the brightness and wavelength of each color LED is crucial. Consistency directly affects the brightness, white balance and chroma consistency of the entire display. Manufacturers usually require device suppliers to provide LEDs that are consistent in wavelength range and brightness range.

When selecting LED devices for full-color LED displays, comprehensive consideration of the above indicators and finding a balance between performance and cost is the key to ensuring the quality of the display. Manufacturers require suppliers to provide LEDs that meet standards and ensure the consistency and stability of LEDs through effective testing methods to meet the needs of different application scenarios.

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Important indicators affecting the quality of full-color LED display