LED Display Grayscale Dispersion for Low-Flicker Sub-Frame Driving

The patent introduces a grayscale threshold parameter to dynamically switch between non-dispersion mode (for low grayscale values below threshold) and dispersion mode (for grayscale values at or above threshold). This parameter-based switching resolves the contradiction by adapting the display mode to the specific grayscale level, ensuring low power consumption at dark levels while maintaining high visual refreshing rate at brighter levels.

The patent implements a dynamic switching mechanism between two display modes based on real-time grayscale value monitoring. The system transitions from static non-dispersion mode to dynamic dispersion mode when grayscale exceeds the threshold, allowing the visual refreshing rate to adapt to content requirements while maintaining energy efficiency for static or low-brightness content.

The patent segments the grayscale value distribution across multiple sub-frames using a dispersion algorithm. Instead of concentrating grayscale in single sub-frames (simple but causes flicker), the system divides the total grayscale value into multiple segments distributed across sub-frames according to a growth sequence, achieving both even dispersion for quality and manageable implementation through systematic segmentation rules.

The patent applies periodic dispersion patterns across sub-frames using a growth sequence mechanism. Grayscale values are distributed in a systematic periodic manner across multiple sub-frames rather than randomly or uniformly, creating a rhythmic pattern that ensures even visual perception while maintaining implementation simplicity through predictable periodic distribution rules.

The patent changes the parameter of sub-frame utilization by introducing selective dispersion based on grayscale threshold. Instead of always using maximum sub-frames for high visual refreshing rate, the system dynamically adjusts the number of active sub-frames based on grayscale level, maintaining high display quality when needed while reducing power consumption by activating fewer sub-frames at low grayscale levels.

The patent applies partial dispersion action by using only the necessary number of sub-frames required to achieve acceptable display quality at each grayscale level. Instead of excessively using all available sub-frames at all times (which maximizes quality but also power consumption), the system applies just enough dispersion action to eliminate flicker while minimizing energy usage through threshold-based sub-frame activation.