Display Panel Gate Line Layout to Prevent Chip-Attachment Cracks
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Solution Overview
Problem
The physical attachment of driving chips to display panels can cause defects such as cracks, leading to signal cutoff and screen abnormalities due to the applied force and structural stress on the display panel.
Innovation Solution
A dual line configuration between the substrate and protection layer, along with dummy electrodes on the same layer as the first line, minimizes cracks and delamination around the driving chip, preventing disconnection and corrosion of gate lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If driving chips are physically attached to the display panel, then the display apparatus can be made lightweight and thin, but cracks and defects occur in the display panel due to applied force
Solution Approach 1:
A dual line configuration (first line and second line) is introduced as an intermediary structure between the substrate and protection layer. This mediator distributes the physical force applied during driving chip attachment, preventing direct stress concentration on single gate lines and thereby reducing crack formation while maintaining the lightweight design.
Solution Approach 2:
The patent changes the structural parameter of the gate line system from a single line to a dual line configuration. This parameter change increases the structural redundancy and force distribution capacity, allowing the display panel to maintain integrity under the physical stress of chip attachment while keeping the overall apparatus lightweight.
2Ease of operation
If driving chips are physically attached to the display panel, then driving functionality is achieved, but delamination occurs around the driving chip
Solution Approach 1:
The dual line configuration is specifically positioned in the non-display area where driving chips are attached. This local structural enhancement provides targeted reinforcement at the critical attachment zone, improving layer adhesion and preventing delamination exactly where the driving chip functionality requires physical attachment, without affecting other areas.
3Device complexity
If a single line configuration is used, then the structure is simple, but screen defects occur due to cracks and disconnection
Solution Approach 1:
The gate line system is segmented into a first line and a second line, creating redundant pathways for signal transmission. This segmentation ensures that if one line experiences a crack or disconnection, the other line can maintain functionality, thereby preventing screen defects while adding only moderate complexity to the overall structure.
Data Source
AI summary
A display apparatus may comprise a substrate including a display area and a non-display area around the display area, a gate driving part disposed at the non-display area on the substrate, a driving chip disposed at the non-display area on the substrate, a first line disposed on the substrate, the first line electrically connected to the driving chip, and a second line disposed between the substrate and the first line.