Light-Emitting Element Fixing Structure to Prevent Insulating Layer Peeling

The insulating layer is segmented into multiple distinct layers: a first insulating layer made of organic insulating material that contacts the light emitting element, and a second insulating layer made of inorganic insulating material that covers the first insulating layer. This segmentation allows each layer to perform its specific function - the organic layer provides ease of manufacture and good adhesion to the light emitting element, while the inorganic layer provides reliability and resistance to peeling during manufacturing steps.

The patent employs a composite structure combining organic and inorganic insulating materials in a layered configuration. The organic insulating material layer is formed first on the light emitting element, followed by the inorganic insulating material layer. This composite approach leverages the advantages of both material types - the organic material's ease of deposition and adhesion properties, and the inorganic material's structural stability and resistance to mechanical damage during subsequent manufacturing processes.

Rather than using a single thick insulating layer, the patent segments the insulation function into two thinner layers - an organic insulating layer and an inorganic insulating layer. Each layer can be optimized for its specific thickness and material properties, providing sufficient mechanical strength and peeling resistance without requiring excessive thickness, thus maintaining device compactness while improving reliability.

The composite layered structure of organic and inorganic insulating materials provides enhanced mechanical strength and adhesion compared to a single-layer approach. The inorganic insulating material layer, in particular, provides a protective barrier that prevents peeling of the underlying organic layer during manufacturing steps, ensuring structural integrity without requiring the insulating structure to be excessively thick.