OLED Display Panel Recessed Structure Blocks Current Leakage

The organic common layer is segmented by introducing a discontinuous structure through the first opening. The first layer and second layer form a stepped configuration that creates a physical break in the organic common layer's continuous path between adjacent pixel regions, thereby blocking current leakage while maintaining manufacturing feasibility through a modified but not overly complex structure.

The solution transitions from a two-dimensional planar structure to a three-dimensional stepped structure by forming the first opening with first and second layers at different heights. This vertical dimensionality change creates a more effective barrier against current leakage while accommodating the organic common layer in a recessed configuration.

The discontinuous structure is applied locally only in the non-pixel regions where current leakage occurs, rather than throughout the entire device. The first opening is strategically positioned to block leakage paths between adjacent pixel regions while leaving the pixel region structures themselves unchanged, thereby minimizing overall device complexity.

The blocking structure is segmented into two distinct layers (first layer and second layer) forming a stepped configuration. This segmentation allows each layer to be optimized independently for its specific function while collectively achieving the current leakage blocking goal without requiring a completely redesign of the entire device architecture.

The organic common layer is segmented only in the horizontal plane between pixel regions through the first opening, while the cathode layer remains continuous in the vertical direction. The stepped structure created by the first and second layers allows the organic common layer to be discontinuous for blocking current leakage while the cathode maintains its continuous pathway for electron transport.

The solution resolves the contradiction by operating in different dimensions: the organic common layer discontinuity is created in the horizontal plane through the first opening to block current leakage, while the cathode continuity is maintained in the vertical dimension, allowing electrons to pass through the stepped structure without interruption.