Organic Light Emitting Display Partition Wall Aperture Ratio

The patent introduces a partition wall that divides the auxiliary electrode into multiple separate regions. This segmentation allows the auxiliary electrode to maintain sufficient width for reliable electrical connection while preventing it from encroaching on the first electrode area, thereby preserving the aperture ratio. The partition wall creates distinct zones that enable both electrodes to coexist without excessive width competition.

The partition wall acts as an intermediary structure between the first electrode and the auxiliary electrode. It provides physical separation and insulation, allowing the auxiliary electrode to be broader for better electrical connection while preventing interference with the first electrode's width. The partition wall mediates the spatial conflict between these two electrodes, enabling both to achieve their optimal dimensions.

By segmenting the auxiliary electrode through the partition wall, the patent enables the auxiliary electrode to maintain adequate width for electrical performance without compromising the first electrode's dimensions. This segmentation ensures the first electrode retains sufficient width for long-term reliability and lifetime, while the auxiliary electrode achieves its needed width for electrical connection.

The partition wall creates local differentiation in the electrode structure, allowing different regions to have optimized dimensions. The auxiliary electrode can be broader in regions where electrical connection is prioritized, while the first electrode maintains its width in regions critical for lifetime and aperture ratio, achieving local optimization of both parameters.

The partition wall serves multiple functions simultaneously: it acts as a physical separator between electrodes, provides electrical insulation, defines the aperture boundary, and structurally supports the organic emission layer. This multi-functionality allows a single structural element to achieve multiple objectives, enhancing aperture ratio while minimizing the addition of separate components and manufacturing steps.

The partition wall is implemented as a thin film or membrane structure that provides the necessary separation and insulation functions without adding substantial bulk or complexity. This thin-film approach allows the partition wall to be integrated into the existing multi-layer structure with minimal impact on device complexity, while still achieving the aperture ratio enhancement.