Display Panel Metal-Insulator Layout for Moisture-Blocked Component Areas
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Solution Overview
Problem
As display apparatuses increase in size, there is a need for innovative designs that can accommodate various components within the display area while maintaining efficient functionality and preventing moisture penetration, which existing technologies struggle to address effectively.
Innovation Solution
A display panel design featuring a substrate with distinct areas, including a display area, a component area, and an intermediate area, where a multi-layered film structure with a first metal layer, an organic insulating layer, and a second metal layer are used, with grooves and contact portions to disconnect organic layers and prevent moisture ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If components are arranged in the display area to add functions, then functionality is improved, but moisture penetration risk increases
Solution Approach 1:
The display area is segmented into a first area for display elements and a second area for components, separated by a partition wall. This segmentation allows functional integration while physically isolating components that may pose moisture risks from the display elements.
Solution Approach 2:
A partition wall structure acts as an intermediary barrier between the component area and display element area. The partition wall includes a body portion and a protruding portion that extends into the component area, creating a protective barrier that prevents moisture penetration while allowing functional integration.
2Reliability
If a partition wall is added to separate components from display elements, then moisture barrier effectiveness is improved, but device complexity increases
Solution Approach 1:
The partition wall serves multiple functions: it physically separates the component area from the display element area, provides a moisture barrier, and structurally supports the organic insulating layer and contact portions. This multi-functionality reduces the need for additional separate components.
Solution Approach 2:
The protruding portion of the partition wall is nested within the component area, creating a layered structure where the partition wall body is positioned between the substrate and the component, with the protruding portion extending further into the component area. This nested arrangement maximizes protective function while minimizing space consumption.
3Reliability
If contact portions are formed to connect metal layers, then electrical connectivity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The partition wall structure, including its protruding portion, is formed in advance before the organic insulating layer and contact portions are created. This preliminary formation of the partition wall provides a pre-established structural framework that guides the subsequent formation of contact portions, ensuring proper alignment and reducing manufacturing precision requirements.
Data Source
AI summary
A display panel includes: a substrate including a first area, a second area, and a third area located between the first area and the second area; a display layer including a display element located in the second area; a first metal layer located in the third area; an organic insulating layer located on the first metal layer and including at least one contact portion; and a second metal layer located on the organic insulating layer and contacting the first metal layer through the at least one contact portion, in which the second metal layer has a first hole, and the organic insulating layer has a second hole or a first recess corresponding to the first hole, and a residual layer located in the second hole or the first recess and including a part of at least one organic layer overlaps the first metal layer.