Segmented Ink Layer for Flexible Display Stress Management

The ink layer is segmented into multiple discontinuous layers instead of a single closed pattern. The first ink layer forms a first closed pattern, the second ink layer forms a second closed pattern at a different height, and the third ink layer forms a third closed pattern. This vertical segmentation maintains light shielding effectiveness while distributing stress across multiple separated structures, preventing stress concentration during bending.

The solution transitions from a two-dimensional closed pattern to a three-dimensional multi-layer structure. By adding the vertical dimension with ink layers at different heights (first, second, and third ink layers), the patent achieves both light shielding and stress distribution simultaneously, as each layer can independently handle mechanical stress while collectively providing optical shielding.

The ink layer is segmented into multiple separate layers (first, second, and third ink layers) positioned at different heights and locations within the non-display area. This segmentation allows each layer to independently manage stress during bending, preventing the formation of continuous crack paths that would compromise reliability while maintaining flexibility for portable applications.

The patent employs a composite structure with multiple ink layers made of different materials or with different properties. The first ink layer, second ink layer, and third ink layer can be composed of different materials that provide complementary functions, creating a composite system that simultaneously achieves stress distribution, light shielding, and manufacturing feasibility.