Sub-pixel Unit Common Electrode Segmentation for Field Control
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Solution Overview
Problem
Current Liquid Crystal Display (LCD) devices with uniform width common electrodes lack the ability to adjust electric field distribution within sub-pixel units, resulting in identical storage capacitances and suboptimal display effects.
Innovation Solution
The implementation of a sub-pixel unit design featuring a common electrode line with distinct sub-linesthat have varying overlapped areas with sub-pixel electrodes, allowing for different storage capacitances and adjustable electric field distribution by varying the width and shape of the common electrode sub-linesto optimize display performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform width common electrodes are used, then manufacturing is simple, but electric field distribution cannot be adjusted and storage capacitances are identical
Solution Approach 1:
The common electrode is segmented into multiple common electrode sub-lines (first, second, third sub-lines) with different widths and/or lengths. This segmentation allows each sub-line to generate different storage capacitances with corresponding sub-pixel electrodes, enabling electric field distribution adjustment while maintaining a relatively simple manufacturing process through a single-layer structure.
Solution Approach 2:
Different regions of the common electrode are designed with different local properties (widths and lengths of sub-lines) to create varying storage capacitances in different areas. The first common electrode sub-line has different dimensions than the second and third sub-lines, creating localized variations in electric field strength and storage capacitance to optimize display performance in different sub-pixel regions.
2Adaptability or versatility
If different overlapped areas are used between common electrode sub-lines and sub-pixel electrodes, then electric field distribution can be adjusted, but device complexity increases
Solution Approach 1:
The common electrode is divided into discrete sub-lines that can be independently designed with different widths and lengths. This segmentation achieves the goal of creating different overlapped areas and storage capacitances without requiring complex multi-layer structures, as all sub-lines are formed in a single electrode layer.
Solution Approach 2:
The width and length parameters of different common electrode sub-lines are varied to create different overlapped areas with sub-pixel electrodes. By changing these geometric parameters rather than the electrode material or layer structure, the patent achieves electric field distribution adjustment with minimal increase in device complexity.
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 design enables the adjustment of electric field distribution within sub-pixel units, enhancing display effectiveness by creating different storage capacitances and improving the display quality.
Implementation Method 1
the storage capacitances generated by common electrodes and pixel electrodes in a single sub-pixel unit are identical with each other without a capability of adjusting an electric field distribution
Implementation Method 2
without a capability of adjusting an electric field distribution within the single sub-pixel unit
Data Source
AI summary
A sub-pixel unit, an array substrate and a display device are provided. The sub-pixel unit (1) includes a first sub-pixel electrode (10), a second sub-pixel electrode (11) and a common electrode line (12). The common electrode line (12) includes a first common electrode sub-line (120) and a second common electrode sub-line (121); an overlapped area between the first common electrode sub-line (120) and the first sub-pixel electrode (10) is larger than an overlapped area between the second common electrode sub-line (121) and the second sub-pixel electrode (11).