Display Panel Bit-Plane Buffering to Reduce Micro LED Flicker

The patent segments a long-duration subframe into multiple continuous subframes with the same brightness weight. For example, a subframe that originally lasted 4T duration is divided into multiple subframes each lasting T duration. This segmentation allows the sub-pixel to transition states more frequently rather than switching abruptly after a long duration, thereby reducing the perceptibility of flickering while maintaining the same overall brightness control precision.

The patent dynamically adjusts the duration of subframes by introducing a parameter n (where n ≥ 1) that determines how many continuous subframes share the same brightness weight. When flickering is detected or anticipated, the system increases n to shorten individual subframe durations, creating more frequent state transitions. This dynamic adaptation allows the display to optimize between brightness precision and flicker reduction based on content requirements.

The patent segments long-duration high-weight subframes into multiple shorter continuous subframes. Each segmented subframe maintains the same brightness weight but has a reduced duration (T instead of nT). This causes the sub-pixel to undergo state transitions more frequently, preventing abrupt transitions and maintaining stable light emission characteristics while preserving the brightness precision achieved through higher weight values.

The patent introduces periodic refreshing by dividing a long-duration subframe into multiple equal-duration continuous subframes. This creates a periodic pattern of state transitions that prevents the sub-pixel from remaining in a single state for too long, thereby stabilizing the light emission and reducing flickering while maintaining the overall brightness precision through the weighted accumulation of multiple subframes.

The patent dynamically controls the number of continuous subframes (n) based on the required brightness precision and flicker reduction needs. For regions requiring high brightness precision, the system uses larger n values to extend subframe duration and reduce switching frequency, thereby saving power. For regions prone to flickering, the system reduces n to increase switching frequency and stabilize display quality. This dynamic adaptation optimizes the trade-off between power consumption and display quality.

The patent applies different subframe continuation strategies to different regions of the display based on their specific requirements. High-importance regions (such as central display areas) may use smaller n values to prevent flickering, while peripheral or less critical regions can use larger n values to reduce power consumption. This localized quality approach allows the system to optimize power consumption overall while maintaining display quality where it matters most.