Liquid Crystal Panel Common Electrode Opening Size Optimization
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Solution Overview
Problem
In liquid crystal panels with a common electrode, signal delays occur due to inhomogeneous voltage distribution, leading to decreased display quality, particularly in regions far from the connection point with the wire.
Innovation Solution
The common electrode is divided into regions with varying opening sizes, where the second region, farther from the connection, has smaller openings to reduce electric resistance and signal delay, thereby enhancing display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If openings are made larger in the common electrode to reduce electric resistance, then conductivity improves, but signal delay increases in regions farther from the connection point
Solution Approach 1:
The patent applies local quality by making the openings in the common electrode have different sizes depending on their location. Specifically, openings in regions farther from the wire connection point are made larger than those closer to the connection point. This local variation optimizes the balance between reducing electric resistance (improving reliability) and minimizing signal delay in different regions of the common electrode.
2Reliability
If the common electrode is made larger in area to reduce electric resistance, then load on common signal decreases, but device complexity increases
Solution Approach 1:
The patent implements local quality by varying the opening sizes across different regions of the common electrode. The opening size is locally optimized based on the distance from the wire connection point, with larger openings in regions farther away. This approach reduces electric resistance and improves voltage distribution uniformity without requiring a uniform increase in the entire common electrode area, thus managing device complexity effectively.
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 reduces signal delays and parasitic capacitance, resulting in improved display quality by optimizing the common electrode's electric resistance and voltage distribution.
Implementation Method 1
the common electrode becomes higher in electric resistance and higher in load on the common signal with distance from a point of connection in the common electrode with the wire
Implementation Method 2
a common signal is supplied to the common electrode via a wire
Data Source
AI summary
A liquid crystal panel includes pixel electrodes and a common electrode. The common electrode is disposed to overlap the pixel electrodes. A wire is connected to the common electrode. The common electrode includes a first region and a second region. The first region includes first openings. The second region includes second openings. The second region is located farther away from a point of connection with the wire than the first region. The second openings are smaller in area than the first openings.