Display Panel Emission Region Patterning via Mask Segmentation

The mask assembly is divided into multiple separate masks (first mask, second mask, third mask) that can be independently designed and positioned. Each mask corresponds to a specific emission region shape requirement, allowing precise patterning without requiring a single complex mask structure.

The patent introduces a third dimension (vertical stacking of masks) to solve the patterning problem. Instead of using a single complex 2D mask, multiple simpler masks are arranged in the vertical dimension, where each mask layer contributes to forming the final emission region pattern when combined with others.

Different emission region shapes and areas are applied locally to specific pixel types (first pixels vs. second pixels) based on their functional requirements. First pixels have emission regions of one shape while second pixels have emission regions of another shape, allowing each local region to be optimized for its specific purpose while maintaining overall visual harmony.

The patent deliberately uses asymmetric and varied emission region shapes (rectangular, triangular, trapezoidal) for different pixel types rather than uniform symmetric shapes. This asymmetry allows optimization of light emission characteristics for different pixel functions while the controlled variation prevents visual disruption.

The different emission region shapes are pre-planned and systematically assigned to first pixels and second pixels based on their functional requirements. This preliminary design ensures that while shapes differ, the overall pattern maintains recognition consistency by following a predetermined arrangement strategy.

The patent applies shape variation partially rather than universally - only certain pixel types have different shapes while others maintain consistency. This partial variation provides functional adaptability where needed while preserving recognition consistency in regions where uniformity is prioritized.