Display Electrode Bending for Stable Viewing Angle Across Gray Levels
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Solution Overview
Problem
Display panels, particularly LCDs, face challenges in maintaining stable viewing angle performance across different gray levels due to variations in manufacturing processes, affecting both production yield and display quality.
Innovation Solution
The design incorporates a specific electrode configuration with extending and bending portions, optimizing the ratio of dark pattern widths between medium and maximum gray levels to achieve stable viewing angle maintenance, reducing manufacturing variations and enhancing aperture ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional electrode design is used, then the manufacturing process is simple, but the viewing angle maintenance ratio varies across different gray levels
Solution Approach 1:
The electrode is divided into multiple segments including a first extending portion, a bending portion, and a second extending portion. This segmentation allows each portion to contribute differently to the electric field distribution, enabling stable viewing angle maintenance ratio across different gray levels while managing the complexity through functional division.
Solution Approach 2:
The electrode design incorporates a bending portion that extends in multiple directions rather than a single linear configuration. This dimensional change creates distinct dark patterns (first and second dark patterns) that work together to stabilize the viewing angle maintenance ratio across different gray levels, transforming a one-dimensional problem into a multi-dimensional solution.
2Reliability
If the electrode configuration is optimized for stable viewing angle, then the display quality improves, but the manufacturing precision requirements increase
Solution Approach 1:
The design specifies that the width of the first dark pattern should be substantially equal to or greater than the width of the second dark pattern. This parameter change in the dark pattern width ratio provides a clear manufacturing target that balances display quality improvement with achievable manufacturing precision requirements.
Solution Approach 2:
The bending portion of the electrode is specifically designed to create the first dark pattern with controlled width characteristics. This local quality adjustment in the electrode structure allows optimization of the viewing angle maintenance ratio without requiring high precision across the entire electrode, focusing manufacturing attention on critical local regions.
3Productivity
If the dark pattern width ratio is controlled, then the production yield increases, but the electrode design complexity increases
Solution Approach 1:
The electrode design uses a bending portion that dynamically adapts the electric field distribution across different gray levels. This dynamic configuration automatically maintains the appropriate dark pattern width ratio (first dark pattern width substantially equal to or greater than second dark pattern width) throughout the gray level range, increasing production yield without requiring complex external control mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration ensures stable luminous variation with viewing angle changes across gray levels, increasing production yield and reliability while maintaining high display quality.
Implementation Method 1
the liquid crystal molecules aligned between two transparent electrodes rotate continuously depending on the polarity and magnitude of the electric field when the electric field is applied
Implementation Method 2
Liquid crystal display (LCD) panel is the most popular display panel in use
Data Source
AI summary
A first substrate of a display panel includes scan lines disposed above a first base and extending along a first direction, and data lines disposed above the first base and extending along a second direction. An electrode between two data lines has two extending portions substantially parallel to the second direction and one bending portion, and the bending portion is positioned between and connects two extending portions. When a light passes the electrode, an extending direction of a dark pattern corresponding to the bending portion is substantially parallel to the first direction, the dark pattern has a first width in a first gray level and a second width in a second gray level, the first width is larger than the second width, the second gray level is a maximum gray level of the display panel and the first gray level is equal to half of all gray levels.