How To Distinguish Between High Quality And Low Quality Led

1）Display performance and image quality：

①Brightness matches the environment, approximately 600cd/m² indoors, ≥5000cd/m² outdoors, and high gray scale levels, such as 16 bit or higher provide richer colors.

②The white balance is pure and free of color cast, and the colors are vibrant and accurate, the entire screen is free of color patches and dark areas, and features single point brightness or chroma correction technology.

③The screen is flat with no noticeable unevenness in brightness or darkness, the pixel defect rate is low, typically less than one in ten thousand across the entire screen.

④High refresh rates ≥1920hz ensure stable, flicker free images, wide horizontal or vertical viewing angles, such 120°/45° provide excellent viewing from the sides.

2）Core hardware and manufacturing processes：

①The smaller the pixel pitch, the higher the pixel density, and the clearer the image when viewed up close, the choice should be matched to the optimal viewing distance.

②The screen surface is flat, and the seams between panels are small, the protection level should be selected based on the environment, such IP65 waterproof and dust proof for outdoor use.

③Common cathode driving is more energy efficient than common anode driving and is the industry trend, pay attention to whether it has intelligent energy saving features.

3）Stability and reliability：

①Excellent heat dissipation and uniform operating temperature, such maximum and average temperature difference ≤3℃ during white screen display, is conducive to long term stability.

②The product undergoes rigorous aging tests before leaving the factory, such as continuous 168 hours of fault free operation.

③Led lights have a theoretical lifespan of up to 100,000 hours, but the actual lifespan of the entire screen is affected by various factors.

4）Qualifications and Safety Guarantees：

①The product must obtain China Compulsory Certification 3C certification, which is a basic requirement for legal sales, other certifications such as energy efficiency and CE certification can be considered as needed.

②Pay attention to flame retardancy ratings, such as V-0 grade and smoke toxicity indicators to ensure safety in public places.