Flexible Display Electrode Array Stress Distribution

The patent applies local quality by making the pixel electrodes have different sizes depending on their position on the flexible substrate. Specifically, pixel electrodes in regions that experience greater stress or deformation when bent are designed with larger areas, while those in less stressed regions have smaller areas. This compensates for the differential stress distribution and maintains uniform image quality across the display when bent.

The patent changes the parameter of pixel electrode size based on spatial position. By varying the area of pixel electrodes according to the stress map of the flexible substrate, the design compensates for non-uniform deformation. This parameter adjustment ensures that all pixel electrodes maintain substantially the same effective area when the device is in a bent state, thereby preserving image quality.

The patent addresses long-term bent state usage by designing pixel electrodes with position-dependent sizes that account for cumulative deformation. Regions experiencing higher stress over time have larger pixel electrodes, which compensates for the progressive distortion that would otherwise occur during extended usage in a bent configuration.

The patent applies preliminary action by pre-compensating for expected deformation through asymmetric pixel electrode design. Before the device is actually used in a bent state, the pixel electrodes are sized to anticipate and counteract the stress distribution, ensuring that even after prolonged usage, the image quality remains uniform across the display.