Stretchable OLED Corner Panel Layout to Prevent Wavy Wrinkles

The film layers in stretchable regions are segmented by introducing multiple staggered holes that divide the continuous film into separate sections. This segmentation allows the film to flex and deform more easily during stretching while distributing compression stress across multiple discrete areas rather than allowing it to accumulate continuously, thereby preventing wavy wrinkles while maintaining structural integrity.

The holes are strategically positioned in specific locations within the stretchable region, creating local variations in film density and stress distribution. By concentrating hole placement in areas prone to compression stress, the design locally modifies the film properties to reduce stress accumulation and prevent wrinkle formation in critical areas while maintaining complete film coverage in other regions.

The holes are pre-formed in the film layers during the manufacturing process before the display panel is assembled and put into service. This preliminary action of creating stress relief structures during fabrication ensures that the stress relief function is built-in from the start, eliminating the need for post-manufacturing modifications while providing adequate stress relief capability.

The staggered hole pattern creates a porous structure within the film layers of the stretchable region. This porous configuration reduces the overall mass and stiffness of the film in stretched areas, allowing for better stress distribution and relief while maintaining sufficient structural support. The porous design is integrated into the manufacturing process, maintaining ease of production while significantly improving stress relief performance.