Pixel Structure Zigzag Data Line Crosstalk Reduction
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Solution Overview
Problem
Display panels face issues such as crosstalk, bright lines, and dark lines due to the influence of data electrodes on liquid crystal molecules, which affect display quality, aperture ratio, and transmittance.
Innovation Solution
A pixel structure is designed with a substrate, scan line, and data line featuring a zigzag pattern where the data line and common electrode intersect, allowing the pixel electrode to partially overlap with both, thereby reducing crosstalk and improving display quality by maintaining a common voltage potential and minimizing coupling capacitance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the data line and common electrode are arranged in a conventional manner, then the device complexity is low, but crosstalk occurs between the data electrode and liquid crystal molecules causing display quality degradation
Solution Approach 1:
The data line is divided into multiple sections (first data line section, second data line section) that are alternately arranged with common electrode sections. This segmentation allows the data line to intersect with the common electrode at specific regions, reducing the overlapping area between the data line and pixel electrode, thereby minimizing crosstalk and improving display quality while maintaining a manageable structural complexity.
Solution Approach 2:
The patent introduces a perpendicular projection direction to describe the spatial relationship between components. The data line and common electrode are arranged in different planes and intersect in the perpendicular projection direction, creating a three-dimensional configuration that reduces parasitic capacitance and crosstalk while maintaining planar fabrication simplicity.
2Illumination intensity
If the aperture ratio is increased to improve light transmission, then the transmittance improves, but the area available for electrode arrangement decreases leading to increased crosstalk
Solution Approach 1:
By segmenting the data line into multiple sections and alternately arranging them with common electrode sections, the patent reduces the total overlapping area between the data line and pixel electrode. This allows for a larger effective aperture area while maintaining sufficient electrode area for signal transmission, thus improving light transmittance without increasing crosstalk.
Solution Approach 2:
The common electrode serves as an intermediary structure that intersects with the data line. This intermediary arrangement allows the data line to pass through regions where the common electrode is present, reducing the direct overlapping area between the data line and pixel electrode, thereby minimizing crosstalk while preserving aperture ratio and light transmittance.
3Reliability
If the data line overlaps extensively with the pixel electrode to ensure electrical connection, then the electrical conductivity improves, but the coupling capacitance increases causing crosstalk
Solution Approach 1:
The data line is segmented into multiple sections with alternating arrangements relative to the common electrode. This segmentation reduces the continuous overlapping area between the data line and pixel electrode, thereby decreasing the total coupling capacitance while maintaining adequate electrical connection through the segmented structure.
Solution Approach 2:
The patent utilizes the perpendicular projection direction to arrange the data line and common electrode in a three-dimensional configuration. This spatial arrangement reduces the overlapping area in the planar view while maintaining electrical connectivity, effectively reducing coupling capacitance and crosstalk without compromising electrical connection reliability.
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 effectively reduces crosstalk, eliminates bright and dark lines, enhances the aperture ratio, and improves light penetration, resulting in improved display quality and power efficiency.
Implementation Method 1
minimizing coupling capacitance
Implementation Method 2
reduces crosstalk
Data Source
AI summary
A pixel structure includes a substrate, a scan line disposed on the substrate, and a common electrode and a data line both disposed on a side of the pixel electrode. The substrate includes a sub pixel, which includes a pixel electrode and an active element. The common electrode includes a first connection segment connecting a first segment and a second segment. The data line includes a second connection segment connecting a first section and a second section. The first segment and the second segment, as well as the first section and the second section, extend in a first direction and are alternately arranged in a second direction. The first direction intersects with the second direction. The first connection segment mutually intersects with the second connection segment. The pixel electrode overlaps with a part of the common electrode and a part of the data line in a perpendicular projection direction.