Pixel Structure Bent Signal Line Crosstalk Reduction
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Solution Overview
Problem
In curved screen displays, the dislocation of the black matrix and light leakage due to the mismatched curvature of substrates and the crosstalk issue caused by the electric field from data lines intersecting with pixel electrode slits result in brightness unevenness and image quality problems.
Innovation Solution
A pixel structure is designed with a signal line that has a bent portion extending along the directions of the slits of the pixel electrode, where the pixel electrode covers the edges of the bent portion of the signal line, preventing electric field interference and crosstalk, and the black matrix is positioned to avoid light leakage by not extending along the direction of the signal line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the data line extends perpendicular to the bending direction to facilitate curved screen manufacturing, then the ease of manufacture is improved, but the black matrix experiences severe dislocation and light leakage occurs
Solution Approach 1:
The data line is designed to extend in a direction that is not perpendicular to the bending direction, creating an asymmetric arrangement that reduces black matrix dislocation while maintaining curved screen manufacturing feasibility
Solution Approach 2:
The data line is repositioned to extend in an oblique direction relative to both the bending direction and the black matrix, changing the dimensional relationship to minimize interference and dislocation
2Device complexity
If the data line is moved to the opening region to prevent overlapping with the metal shielding layer, then the device complexity is reduced, but the electric field from the data line intersects with the pixel electrode slits causing crosstalk
Solution Approach 1:
The data line is positioned to extend in a specific oblique direction that creates a localized favorable geometry, reducing electric field intersection with pixel electrode slits in the critical region while maintaining overall device simplicity
Solution Approach 2:
The data line's electric field, which could cause crosstalk, is redirected by changing its extension direction to oblique relative to the pixel electrode slits, converting a harmful intersecting field into a beneficial non-interfering field configuration
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 significantly reduces vertical crosstalk and improves display quality by minimizing the impact of the signal line's electric field on liquid crystal alignment and preventing light leakage, resulting in a more uniform brightness and better image depth.
Implementation Method 1
the signal line comprises a first portion and a second portion, the first portion of the signal line overlaps the pixel electrode... the first portion of the signal line comprises at least one bent portion... and the pixel electrode covers edges of the bent portion of the signal line
Data Source
AI summary
A pixel structure includes a scan line, a signal line and a first pixel. The first pixel includes a switch device and a pixel electrode. A gate of the switch device is electrically connected to the scan line. The pixel electrode is electrically connected to the switch device, and the pixel electrode includes a plurality of slits. The signal line includes a first portion and a second portion, the pixel electrode overlaps the first portion of the signal line, and the scan line overlaps the second portion of the signal line. The first portion of the signal line includes at least one bent portion, the bent portion is disposed along the arrangement directions of the slits, and the pixel electrode covers the edges of the bent portion of the signal line.