Display Panel Compensation Subpixels for Precise Aging Correction
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Solution Overview
Problem
Existing display devices face challenges in accurately compensating for subpixel deterioration due to limitations in sensing and correction methods, leading to inefficiencies in maintaining color accuracy and performance over time.
Innovation Solution
Incorporating a hybrid structure of normal and compensation subpixels, where compensation subpixels emit different colors and are connected to sensing lines, allowing for precise sensing and correction of normal subpixels based on acquired sensing values, thereby updating compensation algorithms to improve accuracy and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensing lines and compensation subpixels are added to enable precise sensing, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The display panel is segmented into normal subpixels and compensation subpixels. Each compensation subpixel is equipped with a sensing line connected to a sensing circuit, while normal subpixels use the same data lines for both driving and sensing. This segmentation allows precise sensing of compensation subpixels without requiring separate sensing lines for all subpixels, thus improving measurement precision while controlling device complexity.
Solution Approach 2:
The data lines are designed to serve dual functions: driving normal subpixels during display operation and sensing compensation subpixels during compensation mode. This multi-functionality eliminates the need for dedicated sensing lines for all subpixels, reducing device complexity while maintaining sensing precision through the specialized compensation subpixel structure.
2Manufacturing precision
If compensation subpixels emitting different colors are implemented, then color accuracy is improved, but manufacturing precision requirements increase
Solution Approach 1:
Different compensation subpixels are assigned to emit different colors (red, green, blue, yellow, cyan, magenta) based on their local position and the colors of adjacent normal subpixels. This local quality approach ensures that each compensation subpixel compensates for the specific color characteristics of its surrounding normal subpixels, improving color accuracy while maintaining a manageable pixel structure through targeted color assignment rather than universal complexity.
Data Source
AI summary
A display device can include a display panel having pixel groups configured to emit light to display an image, a data driver configured to drive the display panel, and a timing controller configured to control the data driver. At least one of the pixel groups includes a normal subpixel connected to a data line and a compensation subpixel connected to the data line and a sensing line. The normal subpixel and the compensation subpixel emit light of different colors.