Display Interconnect Shielding Electrodes for Overlap Crosstalk
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Solution Overview
Problem
Existing display devices face issues with coupling and crosstalk between overlapping signal lines, which affect the reliability and performance of the display.
Innovation Solution
Incorporating shielding electrodes between signal lines and connection lines, which are disposed in different layers and extend in different directions to minimize coupling and improve reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal lines and connection lines are disposed in different layers and extend in different directions, then coupling and crosstalk are minimized, but device complexity increases due to additional shielding electrodes and multi-layer routing
Solution Approach 1:
A shielding electrode is introduced as an intermediary element between the first signal line and the first connection line. This shielding electrode acts as a mediator that blocks electromagnetic coupling between the overlapping lines, reducing crosstalk and improving signal integrity without requiring the lines to be physically separated in space.
Solution Approach 2:
The patent utilizes the vertical dimension (thickness direction of the substrate) to resolve the coupling issue. Instead of separating signal lines and connection lines only in the planar direction, the shielding electrode is positioned in the thickness direction between overlapping lines, effectively blocking electromagnetic interference while maintaining compact planar layout.
2Reliability
If shielding electrodes are disposed between overlapping signal lines and connection lines, then crosstalk is reduced, but manufacturing complexity increases
Solution Approach 1:
The shielding electrode is merged with the ground structure of the display device. Instead of being a separate independent component, the shielding electrode is integrated into the existing ground plane or ground lines, allowing it to serve dual purposes: shielding against crosstalk and providing ground reference. This integration simplifies manufacturing by reducing the number of separate fabrication steps.
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
The implementation of shielding electrodes reduces coupling and enhances the reliability of the display device by minimizing crosstalk between overlapping lines.
Implementation Method 1
shielding electrodes disposed between the first signal lines and the first connection lines
Data Source
AI summary
A display device includes a substrate including a display area including a first area and a second area, and a non-display area, first signal lines disposed on the first area and the second area of the substrate, first connection lines extending from the first area to the second area, where each of the first connection lines is electrically connected to a corresponding one of first signal lines disposed in the second area, second connection lines disposed in the first area, where each of the second connection lines is electrically connected to a corresponding one of the first connection lines, and shielding electrodes disposed between the first signal lines and the first connection lines.