Organic Insulating Layer Groove for Moisture Protection

The patent implements a nested protective structure where an inorganic insulating layer is formed over the organic insulating layer in the second area (non-display area). This creates a multi-layer protection system where the inorganic layer acts as an outer shell protecting the organic layer from moisture ingress, while the organic layer provides the base insulation. The groove portion in the organic insulating layer further nestedly contains the conductive lines, creating a protected cavity structure.

The patent employs a composite insulating layer structure combining organic and inorganic materials. The organic insulating layer provides manufacturing advantages and basic insulation, while the inorganic insulating layer adds moisture barrier properties. This composite approach leverages the complementary strengths of both material types to achieve both ease of manufacture and high reliability.

The patent applies different protective qualities to different areas of the substrate. In the first area (display area), only the organic insulating layer is formed, while in the second area (non-display area), an additional inorganic insulating layer is formed over the organic layer. This local differentiation provides enhanced moisture protection specifically where needed in the second area without adding unnecessary complexity to the first area.

The patent segments the protective layer structure into two distinct regions: the first area with a single organic insulating layer and the second area with a stacked organic-inorganic insulating layer structure. This segmentation allows tailored protection strategies for different functional areas, addressing moisture ingress risks in the second area while maintaining manufacturing simplicity in the first area.

The patent applies preliminary protective action by forming the inorganic insulating layer over the organic insulating layer in the second area before the conductive lines are fully exposed or used. This pre-established protective barrier prevents moisture from reaching the conductive lines during subsequent handling and operation, countacting corrosion risks before they can manifest.

The inorganic insulating layer acts as an intermediary protective barrier between the conductive lines and the external environment. It mediates the interaction by providing a moisture-resistant interface that allows electrical connection functionality while preventing harmful moisture contact with the conductive lines.