OLED Gray-Level Compensation Using Dynamic Luminance Offsets

The patent divides the gray-level range into multiple segments (first gray-level range and second gray-level range) with different thresholds. Each segment uses a different interpolation coefficient (first interpolation coefficient for low gray-levels, second interpolation coefficient for high gray-levels), preventing over-compensation in low segments and gray-scale loss in high segments while maintaining compensation simplicity.

The patent makes the luminance offset dynamic by using interpolation coefficients that vary with the initial gray-level value. Instead of a fixed offset, the system dynamically adjusts the offset based on the pixel's gray-level position within different ranges, allowing precise compensation for each gray-level while keeping the overall process simple through automated classification.

The patent changes the parameter of luminance offset based on the initial gray-level value. By establishing a correspondence between gray-level values and luminance offsets (through interpolation coefficients that vary with gray-level thresholds), the system achieves accurate compensation for each gray-level while managing complexity through systematic parameter variation rather than arbitrary adjustments.

The patent applies different interpolation coefficients to different gray-level ranges, giving each region its own optimized compensation characteristics. Low gray-level pixels use one coefficient to prevent over-compensation, while high gray-level pixels use another to preserve gray-scale levels, achieving locally optimized compensation without requiring complex global optimization.