Common Electrode Connecting Lines for LCD Voltage Uniformity
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Solution Overview
Problem
Liquid crystal displays (LCDs) face issues with non-uniform voltage distribution across common electrode lines, leading to resistance variations and degraded display uniformity due to voltage drops along these lines.
Innovation Solution
The implementation of connecting lines between adjacent common electrode lines to form electrical connections, reducing resistance by connecting common electrodes in parallel, thereby improving voltage distribution and uniformity in displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If common electrode lines are used to provide common voltage to pixel units, then the display function is achieved, but voltage drops occur along the lines causing non-uniform voltage distribution and degraded display uniformity
Solution Approach 1:
The patent divides the common electrode lines into multiple segments by introducing connecting lines that electrically connect adjacent common electrode lines. This segmentation creates multiple parallel current paths, reducing the overall resistance and voltage drops along each segment, thereby improving voltage distribution uniformity across the display panel.
Solution Approach 2:
The patent merges adjacent common electrode lines through connecting lines to form a unified electrical network. By combining multiple common electrode lines into parallel connections, the total resistance is reduced and voltage distribution is equalized across all common electrodes, solving the non-uniformity problem.
2Adaptability or versatility
If common electrode lines are extended to cover the entire display region, then all pixel units receive common voltage, but the resistance of the lines increases leading to greater voltage drops
Solution Approach 1:
The patent segments the long common electrode lines into shorter sections by introducing connecting lines at intermediate positions. This creates multiple shorter parallel paths instead of one long path, reducing the total resistance while maintaining full coverage of the display region.
Solution Approach 2:
The patent adds a new dimensional aspect to the common electrode structure by introducing connecting lines that create a two-dimensional network of parallel paths. This transforms the single-dimensional long line into a multi-dimensional grid, reducing resistance through multiple current pathways without increasing the physical footprint.
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 the resistance of common electrode lines and enhances display uniformity by minimizing voltage drops, resulting in improved display quality without requiring additional manufacturing steps.
Implementation Method 1
at least two connecting lines, each of which is located in a display region, and which are configured for achieving mutual electrical connection between at least two of two or more common electrode lines that are adjacent
Data Source
AI summary
A substrate and a display device are disclosed. The substrate includes a plurality of common electrode lines that are spaced at an interval, configured for providing corresponding pixel units with a common voltage; at least two connecting lines, each of which is located in a display region, and which are configured for achieving mutual electrical connection between at least two of the common electrode lines that are adjacent.