Display Calibration Using Multi-Gradation Coefficients

The patent divides the calibration process into multiple gradation segments. Instead of using a single calibration coefficient for all gradations, the system calculates and stores separate calibration coefficients for different gradation ranges (first gradation range, second gradation range, etc.). This segmentation allows each gradation to have its own optimized calibration coefficient, resolving the contradiction between achieving precision in one gradation and maintaining adaptability across all gradations.

The patent applies local quality by making calibration coefficients specific to local gradation characteristics. Each gradation range has its own calibration coefficient that is optimized for that specific range's properties. This allows the calibration to be locally optimized for each gradation while maintaining global uniformity across the entire display, thereby improving both precision and adaptability.

The patent applies partial action by selecting representative gradations (first and second gradations) from which calibration coefficients are calculated. Instead of measuring and storing coefficients for every possible gradation, the system uses coefficients from these partial samples to represent and correct multiple gradation ranges. This reduces the complexity of calibration data while still achieving uniformity improvement across all gradations.

The patent makes calibration coefficients universal by using coefficients calculated from specific reference gradations to correct multiple other gradations. The first and second calibration coefficients, derived from specific gradations, are applied universally across different gradation ranges through the controller's selective application logic, reducing the need for separate coefficients for every gradation while maintaining calibration effectiveness.