Array Substrate Common Electrode Branches Shield Electric Field
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Solution Overview
Problem
Existing array substrates in liquid crystal display technology suffer from light leakage due to interference from electric fields between data lines and pixel electrodes, which affects the orientation of liquid crystal molecules.
Innovation Solution
The array substrate incorporates common electrode lines with branches extending in the data line direction, where each branch partially overlaps projections of data lines and pixel electrodes, effectively shielding the electric field and preventing light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data lines and pixel electrodes are arranged in the array substrate, then the display structure is formed, but electric field interference causes light leakage
Solution Approach 1:
A shielding layer is introduced as an intermediary component between the data lines and pixel electrodes. This shielding layer acts as a mediator that blocks the electric field lines generated by the data lines from directly interacting with the pixel electrodes, thereby preventing the harmful electric field interference that causes light leakage in the display device
Solution Approach 2:
The invention converts the harmful electric field effect into a beneficial shielding effect by utilizing the same electric field principles. The shielding layer, when properly biased, creates an opposing electric field that cancels out the interfering field from the data lines, transforming the problematic electric field interaction into a solution that eliminates light leakage
2Object-affected harmful factors
If common electrode lines with branches are added to shield electric field, then light leakage is reduced, but device complexity increases
Solution Approach 1:
The common electrode lines are segmented into multiple branches that extend in the data line direction. Each branch is positioned to correspond with specific data lines and pixel electrodes, allowing the shielding function to be distributed across multiple smaller segments rather than requiring a single continuous structure, thus reducing the overall complexity while maintaining effective shielding
Solution Approach 2:
The shielding structure is designed with local quality by positioning branches only where electric field interference occurs between data lines and pixel electrodes. Rather than implementing a uniform shielding structure across the entire display, the branches are strategically placed in specific locations where they are most needed, optimizing the shielding effect while minimizing the added 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 effectively blocks the electric field interference, reducing light leakage and enhancing the display quality by ensuring proper orientation of liquid crystal molecules between data lines and pixel electrodes.
Implementation Method 1
data signal in the data lines and an electric field formed between pixel electrodes may interference orientation of liquid crystal molecules
Data Source
AI summary
An array substrate and a display device belonging to the field of display technology. The array substrate comprises a plurality of gate lines, a plurality of data lines which intersect the plurality of gate lines, and a plurality of pixels units comprised of electrodes defined by neighboring gate lines and neighboring data lines. The array substrate includes a plurality of common electrode lines extending in a gate line direction. Each of the common electrode lines comprises a plurality of branches extending in a data line direction. The array substrate can shield an electric field formed between the data lines and the pixel electrodes, so that a problem of light leakage in the array substrate is solved.