Organic Insulating Layer Routing in Display Non-Display Areas
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Solution Overview
Problem
Existing display devices face challenges in minimizing the size of non-display areas while maintaining aesthetics and low power consumption, which affects the overall viewing experience and efficiency of the display.
Innovation Solution
The display device incorporates a substrate with a non-display area featuring a thin film transistor, a display element, and an organic insulating layer that extends to the non-display area, along with a power voltage line and a protective layer, utilizing inorganic and organic encapsulation layers to enhance protection and reduce moisture penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the non-display area is reduced to enhance aesthetics and viewing experience, then the display area ratio is improved, but the space for routing power voltage lines and placing components becomes insufficient
Solution Approach 1:
The organic insulating layer extends from the display area into the non-display area, creating a continuous insulating path that allows power voltage lines to be routed through the division region. This dimensional extension provides additional routing space without increasing the overall non-display area footprint.
Solution Approach 2:
The organic insulating layer acts as an intermediary structure that bridges the display area and non-display area. It provides both electrical insulation and a physical pathway for power voltage lines to pass through the division region, enabling compact routing while maintaining electrical isolation.
2Reliability
If the organic insulating layer extends to the non-display area to provide continuous insulation, then the electrical isolation is improved, but the complexity of the layer structure increases
Solution Approach 1:
The organic insulating layer serves multiple functions simultaneously: it provides electrical insulation between conductive layers, extends into the non-display area to maintain isolation continuity, and creates a division region that guides power voltage line routing. This multi-functionality reduces the need for separate dedicated structures.
Solution Approach 2:
The patent merges the insulation function with the structural organization function by having the organic insulating layer both isolate electrical components and define the division region. This consolidation reduces the number of separate layers needed while maintaining both electrical isolation and structural clarity.
3Object-affected harmful factors
If the protective layer covers the power voltage line in the division region to prevent moisture penetration, then the protection against external moisture is improved, but the manufacturing process complexity increases
Solution Approach 1:
The protective layer is formed to cover the power voltage line in the division region before final encapsulation. This preliminary protection ensures that the power voltage line is shielded from moisture during subsequent manufacturing steps and device operation, preventing moisture-related failures early in the process.
Solution Approach 2:
The protective layer is applied specifically to the power voltage line in the division region where moisture penetration risk is highest, rather than uniformly across all areas. This localized approach provides targeted protection while minimizing additional manufacturing complexity and material usage.
Data Source
AI summary
A display device includes a non-display area adjacent a display area, a thin film transistor, a display element, a thin film encapsulation layer, an organic insulating layer, a power voltage line, and a protective layer. The thin film transistor is on the display area and is connected to the display element. The thin film encapsulation layer covers the display element. The organic insulating layer is between the thin film transistor and display element and extends to the non-display area. The organic insulating layer includes a central portion corresponding to the display area, an outer portion surrounding the central portion, and a division region dividing the central portion and the outer portion and surrounding the display area. The power voltage line is in the non-display area and includes a portion corresponding to the division region. The protective layer covers an upper surface of the power voltage line in the division region.