Display Device Transparent Insulating Protective Layer

The patent implements a multi-layer nested protective structure where the first protective layer (transparent insulating material) is positioned on the thin film encapsulation layer, and the second protective layer (conductive material) is positioned on the first protective layer. This nested arrangement provides comprehensive protection against static electricity and scratches while maintaining a compact overall structure. The conductive second protective layer is strategically placed to discharge static electricity, while the transparent insulating first protective layer provides scratch resistance and maintains optical properties.

The patent applies different materials with specific local properties to address different protection needs while maintaining transmittance. The first protective layer uses transparent insulating material that provides scratch resistance and maintains high optical transmittance. The second protective layer uses conductive material specifically for static electricity discharge. By localizing the function of each layer, the patent achieves comprehensive protection without significantly compromising the overall transmittance of the display panel.

The patent divides the protective function into two separate layers with distinct materials and functions. The first protective layer (transparent insulating material) handles mechanical protection and maintains optical properties, while the second protective layer (conductive material) handles static electricity discharge. This segmentation allows each layer to be optimized independently and simplifies the manufacturing process by enabling separate deposition steps for each functional layer, rather than attempting to combine multiple functions into a single complex layer.