Orthogonal Flexible Printed Circuit Terminals for Display Bonding
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Solution Overview
Problem
Existing flexible display devices often experience poor bonding between the flexible printed circuit and the printed circuit board, due to shrinkage of the flexible display panel during the bonding process, leading to misalignment and compromised display performance.
Innovation Solution
The flexible printed circuit is designed with a first main portion connected to a flexible display panel and a second main portion connected to a printed circuit board, where the connection terminals on each main portion are arranged in orthogonal directions, ensuring alignment is maintained even when the display panel shrinks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display panel is used during bonding, then the display device achieves flexibility and foldability, but the panel shrinkage causes misalignment between connection terminals and poor bonding quality
Solution Approach 1:
The patent changes the dimensional relationship between connection terminal arrangements by making them orthogonal rather than collinear. The first connection terminals are arranged along a first direction and the second connection terminals along a second direction perpendicular to the first direction, creating a two-dimensional orthogonal layout that prevents misalignment during panel shrinkage while maintaining flexibility
2Device complexity
If connection terminals are arranged in sequence along a single direction, then the structure is simple, but shrinkage causes misalignment and poor bonding
Solution Approach 1:
The patent transitions from a one-dimensional linear arrangement to a two-dimensional orthogonal arrangement of connection terminals. By arranging first connection terminals along a first direction and second connection terminals along a perpendicular second direction, the system maintains structural simplicity while significantly improving bonding reliability through enhanced alignment stability during panel shrinkage
Data Source
AI summary
Disclosed are a flexible printed circuit and a display device. The flexible printed circuit includes a first main portion and a second main portion mutually connected. The first main portion is provided with a plurality of first connection terminals, configured to be electrically connected to a display panel. The second main portion is provided with a plurality of second connection terminals, configured to be electrically connected a printed circuit board. The first connection terminals are arranged along a first direction and the second connection terminals are arranged along a second direction. As the first direction intersects with the second direction, when the flexible display panel contracts and makes the flexible printed circuit deviate in the first direction, alignment between the second connection terminals of the flexible printed circuit and connection terminals of the printed circuit board in the second direction may not be affected.