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 compensating for adverse phenomena of pixels of a display panel, each pixel comprising a drive transistor and a light-emitting device, the method comprising:
storing for each pixel in at least one cluster of pixels, characteristic data representing at least one characteristic indicative of at least one adverse phenomenon associated with the pixel; measuring said at least one characteristic for a first plurality of pixels of said at least one cluster of pixels, a first number of pixels in said first plurality of pixels determined based on changes in time of the characteristic for each of the first plurality of pixels in the at least one cluster; measuring said at least one characteristic for a second plurality of pixels of said at least one cluster of pixels, a second number of pixels in said second plurality of pixels determined based on the at least one characteristic for all of the pixels of a cluster of the at least one cluster; and updating said characteristic data for the first plurality of pixels based on measurements of said first plurality of pixels; and updating said characteristic data for the second plurality of pixels based on measurements of said second plurality of pixels; compensating for the at least one adverse phenomenon for at least the first and second plurality of pixels with use of updated characteristic data of said first and second plurality of pixels.