Bendable Display Substrate Wiring With Integrated Line Protection
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Solution Overview
Problem
Current display substrates for AMOLED displays face challenges in efficiently integrating driving and detection signal lines, leading to complex manufacturing processes and increased costs due to the need for multiple protection layers and precise patterning.
Innovation Solution
The display substrate design includes a bendable extension part with an electrically conductive structure featuring a lower and upper part stacked perpendicular to the substrate, where the upper part acts as a protection layer, simplifying the manufacturing process by eliminating the need for additional protection layers and allowing for direct contact with the lower part, thereby reducing resistance and enhancing signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple protection layers are added to protect signal lines in the extension part, then the reliability of signal transmission is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the protection layer and the electrically conductive structure into a single integrated component. The upper part of the electrically conductive structure serves dual functions: it provides electrical connection (lower part connected to substrate, upper part extending upward) and simultaneously acts as a protection layer for the signal lines in the extension part. This merging eliminates the need for separate protection layers, reducing structural complexity while maintaining signal transmission reliability.
Solution Approach 2:
The electrically conductive structure is designed to perform multiple functions: electrical conduction and mechanical/protection function. By making the upper part of the electrically conductive structure extend upward to form a protective element, the same structure provides both electrical connectivity and protection for the signal lines, reducing the total number of components needed in the system.
2Reliability
If additional protection layers are integrated into the display substrate, then the protection function is improved, but the manufacturing process becomes more complex and costly
Solution Approach 1:
The patent merges the protection layer function with the electrically conductive structure by designing the upper part of the conductive structure to extend upward and provide protection. This integration means that during manufacturing, the same fabrication steps that create the electrically conductive structure also provide the protection function, eliminating the need for additional separate manufacturing steps for protection layers, thereby simplifying the overall manufacturing process.
3Adaptability or versatility
If the extension part is made flexible and bendable, then the adaptability of the display substrate is improved, but the structural integrity may be compromised
Solution Approach 1:
The patent divides the substrate into different regions with different properties: the display region and non-display region use a first substrate material, while the extension part uses a second substrate material that is specifically designed to be flexible and bendable. This segmentation allows the extension part to achieve flexibility and adaptability for folding applications while the main display area maintains its structural integrity and rigidity.
Data Source
AI summary
A display substrate and a manufacturing method thereof, and a display apparatus, in the display substrate, the substrate includes a bendable part at an edge of the non-display region away from the display region; the display substrate has a first side and a second side, the extension part is connected with the bendable part and is bent to the second side of the display substrate through the bendable part; at least a part of the first insulation layer is located in the extension part and the first insulation layer includes an opening; the electrically conductive structure is located in the extension part and includes a lower part and an upper part; the opening exposes the lower part; the upper part is on a side of the lower part away from the substrate, located in the opening and is in direct contact with the lower part.