What exactly is a card core?

​​LED display screen card core​​It is the core computing unit of the driving system, responsible for converting video signals into pixel-level control instructions. In professional-level display devices, this integrated circuit module needs to synchronize the brightness, grayscale and refresh parameters of million-level pixel points. Taking the sixth-generation chip architecture independently developed by a certain enterprise as an example, it adopts a 28nm process process, and a single chip can carry real-time computing of a 128×128 pixel matrix.

How does the card core affect the display effect?

​​Signal resolution accuracy​​Directly determines the image quality performance. Industry test data shows:

• ​​16bit color dark chip​​It can present 281 trillion colors, which is 256 times more color levels than conventional 12bit chips
• ​​3840Hz refresh rate​​The chip eliminates the high-speed moving picture and reduces the delay to 0.02ms in e-sports scenes
• ​​Distributed light control technology​​Make dynamic contrast exceed 2 million:1, and black purity increase by 83%

A certain arc-shaped advertising screen project exported to Japan shows that after the adoption of the new generation of card cores, the visual distance in a strong light environment extends from 42 meters to 67 meters, and the standard deviation of picture uniformity dropped from 5.7% to 1.2%.

Three technical thresholds for high-quality card cores

​​1. Thermal stability design​​
In a application case of a high temperature and high humidity environment in Southeast Asia, after the specially packaged card core module operates continuously for 12,000 hours, the temperature fluctuation is still controlled within the range of ±1.2℃ to ensure that the grayscale linearity does not drift.

​​2. Anti-interference ability​​
Comparative tests show:

​​3. Intelligent compensation algorithm​​
By monitoring 15 optical parameters in real time, the color temperature offset and brightness attenuation are automatically corrected. After three years of operation of a stadium project, the screen white balance error remains at the professional level of ΔE<1.5.

How to choose a reliable card core solution?

​​Hardware level​​Three points should be paid attention to:

• ​​Heat dissipation structure​​: Preferred composite heat dissipation scheme of copper substrate + graphene, thermal resistance value ≤0.15℃/W
• ​​Interface Standard​​: Supports HDMI2.1+DP1.4 dual protocols, and the bandwidth meets 8K@120Hz signal transmission
• ​​Protection level​​: IP6X dustproof certification ensures stable operation in dust environment

​​Software level​​Verification required:

• Whether it has point-by-point correction function, the compensation accuracy reaches 0.1nit
• Can multi-screen synchronization error <0.02 frames be achieved
• Whether to open the SDK interface to support secondary development

Judging from the operation and maintenance data of a smart city project in Dubai, the display screen designed with a modular card core has shortened the fault repair time from an average of 6.2 hours to 47 minutes, and the system availability has increased to 99.98%.

For truly professional display systems, the core technology must be deeply coupled with the entire machine design. Only when the chip drive algorithm forms a trinity-integrated technology closed loop, optical modules and power management, can we achieve the ultimate goal of "stable output without lag, accurate imaging without afterimage" in complex application scenarios. This is not only the direction of industry technology breakthroughs, but also the core of the differentiation of the value of high-end display equipment.

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