How to Identify the Quality of an LED Display?

With the development of LED display technology, there are more and more varied LED displays on the market. As the market grows, some low-end manufacturers also want to get a piece of the pie. For a long time, the LED display market has been mingled with the good and the bad, and flooded with a large number of noncompliant module products. The problems of exposed power supply and arbitrary wiring, to short circuits, aging lines, and the introduction of fire occur frequently. Safety and compliance are major challenges for the entire LED display industry. So many people may worry about the quality and lifespan of the LED display screen. This article aims to address your worry, helping you identify the quality of the LED display.

• White Balance

White balance is a crucial parameter of an LED display screen’s quality, which refers to the accuracy and consistency of the white color displayed by the LED display under different light source conditions. A high-quality LED panel boasts precise white balance, delivering a pure, neutral white without any unwanted red, blue, or yellow tints. This accuracy makes colors rendered true to life. In contrast, an inferior panel often exhibits a pronounced color cast. The white appears as an unnatural cool blue or warm yellow, leading to a distorted color image overall.

• Pixel Pitch

Pixel pitch refers to the distance between two adjacent pixels, which determines the minimum detail that can be displayed on the screen. The smaller the pixel pitch, the higher the resolution, and the clearer and more delicate the picture will be. However, pixel pitch is not the only criterion for determining the quality of a display. When choosing an LED display, we also need to consider other factors. For example, when viewed at close range, a small pixel pitch can provide a clear visual effect, but if an LED screen with a large pixel pitch is used, the picture will appear mosaic, and the visual effect is not good. If you don't know how to choose the correct pixel pitch, here is a calculation formula that can help you: the minimum comfortable viewing distance is usually equal to the P value × 1000 times.

• SMD chip

The quality of the SMD chip directly affects the display effect of the LED visible to the naked eye. The SMD chip brand selected by Toosen Optoelectronics is the best in the industry, namely, Nationstar. High-quality lamp beads can accurately control the wavelength of red, green, and blue three-color light, and can ensure the high purity of the three primary colors, so that the screen can achieve a wider color gamut and more realistic color reproduction. If the quality of the lamp beads is poor, the screen will appear color cast or color blocks. In addition, the quality of the lamp beads also determines the durability of the screen. The service life of inferior lamp beads is usually short, and the screen will become dark after a long time of use.

• Gray Scale

Gray scale refers to the number of brightness levels between the darkest (black) and the brightest (white) that an LED display can recognize and display. It determines the color gradation and transition of the picture. The higher the gray scale, the richer the color level of the LED screen, which can smoothly transition to different brightness levels, display rich color details and shadow changes, and can still be clearly visible when the screen brightness is reduced. If the gray scale is low, the brightness will change discontinuously, resulting in the inability to accurately restore complex color information and image fidelity.

• Refresh Rate

The refresh rate is the number of times per second that a screen updates its image, measured in hertz (Hz). If the refresh rate is too low (below 1000Hz), the human eye may perceive the screen flickering, especially when displaying high brightness or rapidly changing content. Watching such a low refresh rate screen for a long time can easily lead to visual fatigue. The high refresh rate can ensure the continuous update of the picture, making the image seen by the human eye more stable, smooth, and flicker-free, and can effectively improve the comfort and smoothness of viewing. For example, TV studios, live broadcast rooms, stage performances, and other scenes need to be shot with professional cameras. If the refresh rate of the LED screen does not meet the requirements, the camera shutter will capture obvious black scanning lines, water ripples, or flickering on the screen, resulting in the inability to use the shooting material.

• Control System

The quality of the control system determines the screen's correction ability, connection stability, and operational convenience. High-quality power supplies have small output voltage/current fluctuations, avoiding screen flicker and brightness fluctuations; poor-quality power supplies are prone to unstable power supply, causing screen flicker and a black screen. The controller brands selected by Toosen Optoelectronics are all mainstream brands with excellent performance in the market, such as Colorlight and Nova, which effectively guarantee the stable operation, display accuracy, and use safety of the screen.

Conclusion
The above indicators can be used to identify the quality of the LED display. In order to ensure the service life and picture clarity of the LED screen, it is recommended to choose a brand with good reputation when purchasing. If you want to get more detailed information about the LED screen, please feel free to contact us. The professional team of Toosen will provide you with customized services.