Array Substrate Pixel Segmentation for Crosstalk Reduction
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Solution Overview
Problem
Conventional tri-gate type flat display devices face challenges in improving displaying quality due to crosstalk effects, particularly when displaying vertical stripe patterns, which are exacerbated by high-low level alterations of data signals causing coupling effects on common signals.
Innovation Solution
The implementation of an array substrate with specific configurations of pixels, including buffering, first, and second pixel units, where each first and second pixel unit consists of three or more pixels, and are electrically connected to different data lines, reducing the frequency of high-low level alterations and thereby minimizing crosstalk effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a tri-gate type flat display device is used to reduce the number of data lines and lower cost, then the number of source drivers is reduced and cost decreases, but crosstalk effects occur and displaying quality deteriorates
Solution Approach 1:
The pixel array is segmented into first pixel units connected to first data lines and second pixel units connected to second data lines, with buffering pixel units inserted between them. This segmentation allows independent control and reduces crosstalk between adjacent pixel units, improving displaying quality while maintaining the tri-gate structure's cost advantages.
Solution Approach 2:
Buffering pixel units are introduced as intermediary elements between first pixel units and second pixel units. These buffering units act as mediators that isolate the electrical signals from adjacent data lines, preventing crosstalk effects and signal interference, thereby improving image quality without requiring a return to single-gate architecture.
2Productivity
If data lines are arranged with high density to achieve high resolution, then the number of pixels increases, but crosstalk effects between adjacent data lines increase and signal integrity deteriorates
Solution Approach 1:
The high-density pixel array is divided into alternating first pixel units and second pixel units connected to different data lines, with buffering units between them. This segmentation maintains high resolution by keeping pixels densely packed while reducing crosstalk through the buffering isolation, allowing signal integrity to be preserved even at high densities.
Solution Approach 2:
Buffering pixel units serve as intermediary isolation elements inserted between adjacent data lines carrying high-density pixel signals. These intermediaries prevent electromagnetic coupling and crosstalk between closely spaced data lines, enabling high resolution display without sacrificing signal integrity.
3Object-affected harmful factors
If alternating pixel units are connected to different data lines to reduce crosstalk, then the signal coupling effect decreases, but the complexity of the array substrate configuration increases
Solution Approach 1:
The array substrate is segmented into repeating units of first pixel units, buffering pixel units, and second pixel units. This regular segmentation pattern, while increasing structural complexity, provides systematic crosstalk reduction through buffering isolation. The modular repeating structure makes the complexity manageable and predictable for manufacturing.
Solution Approach 2:
The invention changes the connectivity parameter by alternating which data line (first or second) connects to which pixel unit, combined with inserting buffering units. This parameter change in the connection pattern reduces crosstalk by ensuring adjacent pixel units are driven by different data lines with buffering isolation, accepting increased configuration complexity as a trade-off for reduced harmful effects.
Data Source
AI summary
A flat display device includes an array substrate. The array substrate includes a plurality of gate lines, data lines and pixels. The pixels include a plurality of first pixel units and second pixel units, and each of the first pixel units and each of the second pixel units include more than three pixels. The first pixel units and the second pixel units disposed in between two adjacent data lines are arranged alternately, wherein the first pixel units are electrically connected with one of the two adjacent data lines, and the second pixel units are electrically connected with the other data line.