Panel Luminance Chromaticity Precompensation Gamma Voltage Adjustment
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Solution Overview
Problem
Existing methods for adjusting luminance and chromaticity in display panels require repeated cycles due to mutual influences between luminance and chromaticity adjustments, leading to inefficiencies and potential vibration issues during the adjustment process.
Innovation Solution
A precompensation method that considers the potential impact of chromaticity on luminance by using linear estimation iteration to adjust gamma voltages, allowing for precompensation values to be calculated and applied, thereby preventing repeated cycles and improving adjustment efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sequential adjustment of gamma voltages for RGB sub pixels is performed to correct luminance and chromaticity, then the panel parameters can be adjusted to target values, but repeated cycle adjustments are required due to mutual influences between luminance and chromaticity adjustments
Solution Approach 1:
The patent applies preliminary action by pre-calculating compensation values for luminance adjustments before chromaticity adjustments are made. The system calculates how chromaticity adjustments will affect luminance in advance, and pre-compensates for this impact in the luminance target value, thereby avoiding the need for repeated adjustment cycles and improving adjustment efficiency.
2Manufacturing precision
If repeated cycle adjustments are performed to correct luminance and chromaticity, then the target specifications can be met, but adjustment time increases and vibration may occur
Solution Approach 1:
The system performs preliminary calculation of the compensation value that accounts for the impact of chromaticity adjustments on luminance before the actual adjustments are made. This precompensation approach allows the system to reach the target specifications in fewer adjustment cycles, significantly reducing the adjustment time and preventing vibration issues.
Data Source
AI summary
The present invention relates to a precompensation method and a device of adjusting luminance and chromaticity of a panel. The method comprises: step 10, adjusting the gamma voltage of the first sub pixel to make a first sub pixel gray scale luminance be LumT′; step 20, adjusting the gamma voltage of the second sub pixel to make a second sub pixel gray scale chromaticity be yT′; step 30, adjusting the gamma voltage of the third sub pixel to make a third sub pixel gray scale chromaticity be xT; step 40, judging whether specifications is met or not, and if they are, finishing the adjustment, and if they are not, then returning back to the step 10, and restart the adjustment. The present invention further provides a precompensation device of adjusting luminance and chromaticity of a panel.