Tiled Display Panel Ground-Line Layout for Seam and ESD Control
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Solution Overview
Problem
Tiled display devices face reliability and display quality issues due to static electricity generation during manufacturing and visible seam lines between sub-display panels.
Innovation Solution
Incorporating ground lines at the edges of sub-display panels to prevent static electricity and using dummy lines as ground lines, which are integrated into the panel structure to maintain display quality without visually affecting the seam lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ground lines are added at edges of sub-display panels to prevent static electricity, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by making the dummy lines serve dual purposes: they function as both display pixel elements and as ground lines for static electricity prevention. This eliminates the need for separate ground line structures, thereby improving reliability without increasing device complexity.
Solution Approach 2:
The patent merges the dummy lines with the ground line function by electrically connecting them. The dummy lines, which would otherwise be non-functional or cosmetic elements, are integrated into the grounding system, combining two functions into a single structural element.
2Manufacturing precision
If dummy lines are used as ground lines to maintain display quality, then display quality is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by positioning ground lines specifically at critical locations such as panel edges and seams where static electricity accumulation is most likely to occur. The dummy lines are strategically placed and connected to ground at these specific locations rather than uniformly across the entire panel.
Solution Approach 2:
The patent implements equipotentiality by electrically connecting dummy lines to ground potential, ensuring that these lines are at the same electrical potential as the ground. This prevents static electricity buildup and eliminates potential differences that could cause display artifacts or quality issues.
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 solution enhances the reliability and display quality of tiled display devices by protecting against static electricity and minimizing the visibility of seam lines, thereby improving overall performance.
Implementation Method 1
a first ground line disposed between the first pixel and the second sub-display panel and extending in a second direction crossing the first direction
Data Source
AI summary
A display device according to an embodiment may include a first sub-display panel and a second sub-display panel adjacent to the first sub-display panel in a first direction. The first sub-display panel may include a first pixel adjacent to the second sub-display panel and a first ground line disposed between the first pixel and the second sub-display panel and extending in a second direction crossing the first direction. The second sub-display panel may include a second pixel adjacent to the first sub-display panel and a second ground line disposed between the second pixel and the first sub-display panel and extending in the second direction.