Among the driving methods of LED display screens, there are significant differences in energy saving between static driving and scanning driving.
Overall, scan drivers are more energy efficient than static drivers in most cases. The following is a detailed introduction to the energy saving of both:
Static driver
Driving method: Static driving means that each pixel on the LED display has an independent driving circuit. This method allows each pixel to directly receive control signals to achieve fast and accurate display effects.
Circuit requirements: Since each pixel requires an independent driving circuit, static driving requires more circuit components and power consumption to support the operation of these circuits.
Cost and power consumption: As the number of pixels increases, the circuit cost and power consumption of static driving will also increase significantly. Especially in large displays, static driving may consume a large amount of power, leading to increased operating costs.
Scan driver
Driving method: The scan driver adopts a different strategy. It does not configure a separate drive circuit for each pixel, but activates the pixels on the screen through "line-by-line scanning" and "column-by-column gating".
This approach reduces the number of pixels that can be driven simultaneously, thereby reducing circuit requirements and power consumption.
Circuit Requirements: Compared to static drives, scan drives reduce circuit requirements by reducing the number of circuit components working simultaneously. This makes the scan driver more advantageous in terms of hardware cost and also reduces power consumption.
Cost and power consumption: Because the scan driver reduces circuit requirements and power consumption, it performs better in terms of cost and energy efficiency.
Especially in large displays, the energy-saving effect of scan drive is more obvious, helping to reduce operating costs and improve energy efficiency.
Comparison of energy saving effects
* When the number of pixels is large, the circuit cost and power consumption of static driving will increase significantly, while scanning driving can reduce power consumption by reducing the number of pixels working at the same time.
* Although the static driver can achieve fast and accurate display effects, it is relatively weak in terms of energy saving; while the scan driver achieves better energy saving effects by optimizing the driving method while ensuring the display effect.
Practical application
* In practical applications, large outdoor advertising screens often use static drive to ensure the clarity and color saturation of the picture when viewed from a distance; while indoor or close viewing occasions (such as shopping mall shopping guide screens, home theaters, etc.) are more Choose a dynamic scan driver to balance cost and display performance. However, in terms of energy efficiency, a scan driver is a better choice in most cases.
To sum up, the scan driver performs better in terms of energy saving of LED displays.
It reduces power consumption and costs by reducing the number of pixels working simultaneously and optimizing driving methods, helping to improve energy efficiency and reduce operating costs.