Pixel Gray Scale Compensation via Sub-area Multinomial Coefficients
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Solution Overview
Problem
Current mura processing structures in display panel manufacturing require large storage spaces for compensation values of gray scale, leading to increased hardware costs.
Innovation Solution
A method that divides the display area into sub-areas, determines multinomial coefficients, and uses pre-stored coefficients to calculate compensation values of gray scale, reducing storage needs by integrating and processing matrices with smooth filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the mura processing structure provides a storage space corresponding to the resolution of the display panel to store compensation values of gray scale for each pixel, then the gray scale compensation accuracy is improved, but the storage space requirement increases significantly, leading to increased hardware costs
Solution Approach 1:
The patent divides the display area into multiple first sub-areas according to a first preset rule, where each first sub-area includes at least two pixels. For each first sub-area, multinomial coefficients are pre-calculated and stored instead of individual pixel compensation values. This segmentation approach reduces the storage space from needing to store values for every pixel to storing only for grouped sub-areas, while maintaining compensation accuracy through the mathematical model.
Solution Approach 2:
The patent transforms the storage approach from storing raw compensation values for each pixel to storing multinomial coefficients that can generate compensation values through mathematical calculation. By changing the stored parameters from direct compensation values to coefficients of a multinomial expression, the system achieves both space reduction and maintained accuracy through the relationship: compensation value = f(coefficients, pixel coordinates).
Data Source
AI summary
Disclosed is a method for obtaining a compensation value of gray scale of a pixel. The method comprises steps of: acquiring a display area of a display panel; dividing the display area equally into a plurality of first sub-areas according to a first preset rule, each of the first sub-areas comprising at least two pixels; obtaining pre-stored multinomial coefficients of each of the first sub-areas, and according to a second preset rule, establishing a multinomial corresponding to each of the first sub-areas; and obtaining a value range of an independent variable of the multinomial, and according to a corresponding multinomial, obtaining a compensation value of gray scale of each of the first sub-areas.