Tiled Display Bezel Minimization via Inter-Film Wire Routing
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Solution Overview
Problem
Tiled display devices suffer from visual bezels between multiple display units, leading to deterioration in display quality due to the presence of bezels, which affect the stability and uniformity of the pixel and driving circuits.
Innovation Solution
The design incorporates a base substrate with flexible polyimide films and a connection wire that extends between these films, allowing for a bezel-free or minimized bezel configuration by ensuring no overlap between the wire's surfaces, thereby stabilizing the pixel and driving circuits and maintaining a flat surface for improved display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If multiple display devices are arranged to form a tiled display device, then a large screen is implemented, but a bezel appears at the boundary between display devices which deteriorates display quality
Solution Approach 1:
The patent merges multiple display devices into a single tiled display device by integrating connection wires between base films, creating a unified structure that eliminates the visual bezel effect while maintaining the large screen area. The connection wires are disposed between the first base film and second base film, allowing adjacent display modules to be combined seamlessly.
2Reliability
If connection wires are used to connect pixel circuits and driving parts, then electrical connection is achieved, but the wires may overlap between upper and lower surfaces causing instability
Solution Approach 1:
The patent resolves wire overlap issues by utilizing the third dimension (depth) between base films. Connection wires are disposed between the first base film and second base film, extending from one surface to the other without overlapping on the same plane. This dimensional separation ensures stable electrical connections while simplifying the overall wire configuration.
Data Source
AI summary
A display device including a base substrate including a first base film, a second base film disposed on the first base film, and a connection wire, wherein at least a portion of the connection wire is disposed between the first base film and the second base film, a pixel circuit disposed on the base substrate, a light emitting element disposed on the pixel circuit and electrically connected to the pixel circuit, and a driving part disposed under the base substrate. The first base film has a first penetration part and a first protrusion part protruding toward the second base film, and the second base film has a second penetration part overlapping the first protrusion part and a second protrusion part protruding toward the first base film and overlapping the first penetration part. The connection wire extends to an upper surface of the base substrate along the first protrusion part.