Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed

摘要

A local priority-based scanning scheme that focuses scanning to areas of a display panel whose measured characteristics are under continuous change (e.g., aging or relaxation). The algorithm identifies areas or regions needing compensation, using a current measurement from a single pixel in an area as a candidate to determine whether the rest of the region needs further compensation. The algorithm thus detects newly changed areas quickly, focusing time-consuming measurements on those areas that need high attention. Optionally, neighboring pixels sharing the same state (e.g., aging or overcompensated) as the measured pixel can be adjusted automatically given the likelihood that the neighboring pixels will also require compensation if the measured pixel needs compensation.

主权项

1. A method of discriminating areas that are deviating from a previous state or from a previously measured reference value, the areas being areas of a display panel of pixels organized into clusters of pixels, the method comprising:
scanning each of a plurality of pixels in a first cluster until a first criterion is satisfied, the scanning including, for each of the plurality of pixels:
measuring a respective characteristic of a target one of the plurality of scanned pixels in the first cluster;comparing the respective measured characteristic with a reference characteristic to determine a respective state of the target pixel; andif the respective state of the target pixel has changed relative to a prior measurement of the target pixel, determining that the first criterion is satisfied; and responsive to the first criterion being satisfied, automatically compensating for deviations of the respective measured characteristic of each of the plurality of scanned pixels in the first cluster based at least on the respective state of the scanned pixel to shift the respective measured characteristic toward the reference characteristic.