Pixel Electrode With Inflated Ends For Display Transparency
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Solution Overview
Problem
Conventional pixel electrodes have smaller openings at the ends of hollow regions, reducing the effective electrical field and affecting liquid crystal distribution, leading to decreased transparency and contrast in display panels.
Innovation Solution
A pixel electrode design with inflated, curved ending portions that extend to form a hollow gap, improving liquid crystal distribution and transparency, and an array substrate with adjusted via sizes to reduce dark lines and enhance transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the ends of the hollow region have smaller openings, then the manufacturing is easier, but the effective electrical field is reduced and transparency decreases
Solution Approach 1:
The hollow region is designed with non-uniform width: the main body part has a smaller width while the ending parts have inflated portions with larger widths. This local variation in geometry optimizes both manufacturing ease and optical performance by concentrating the electrical field where needed while maintaining ease of fabrication in the main body region.
Solution Approach 2:
The ending parts of the hollow region are designed with curved shapes rather than sharp corners. This curvature creates inflated portions that expand the opening area at the ends, improving liquid crystal distribution and transparency while maintaining manufacturing feasibility through smooth transitions.
2Ease of manufacture
If the ends of the hollow region have smaller openings, then the manufacturing is easier, but the liquid crystal distribution is affected and contrast decreases
Solution Approach 1:
By making the ending parts wider than the main body part, the design creates localized regions that effectively control liquid crystal alignment at the pixel edges, ensuring proper contrast performance while keeping the overall structure manufacturable.
Solution Approach 2:
The curved shape of the inflated ending portions provides smooth transitions that guide liquid crystal molecules properly, preventing defects and ensuring reliable contrast performance without requiring complex manufacturing processes.
3Illumination intensity
If the via aperture is reduced, then the dark lines are reduced and transparency is improved, but the manufacturing precision requirement increases
Solution Approach 1:
The via apertures are optimized to specific size ranges (first via less than 7 microns, second via less than 5 microns) to balance transparency improvement with manufacturing capabilities. This parameter optimization reduces dark lines while maintaining feasible manufacturing precision requirements.
Data Source
AI summary
A pixel electrode, an array substrate, and a display device are disclosed. The pixel electrode includes electrode regions and at least one hollow region distributed between the electrode regions. The hollow region includes a main body part and two ending parts located at two ends of the main body part, at least one ending part is an inflated portion having a width, and a width of the main body part is smaller than the width of the inflated portion. By using the present disclosure, the transparence is improved and the contrast and the power consumption are improved accordingly.