Embedded Touch Electrodes in Pixel Definition Layers

The patent merges the touch circuit layer with the pixel definition layer, eliminating the need for a separate touch circuit layer on the thin film encapsulation. The pixel definition layer serves dual functions: defining pixel regions and providing the touch circuit structure. This integration reduces overall panel thickness while maintaining both display and touch functionalities.

The patent relocates the touch circuit from the traditional planar position on the thin film encapsulation surface to an embedded position within the pixel definition layer structure. This dimensional repositioning allows the touch circuit to be integrated within the existing layer stack rather than adding to it, thereby reducing thickness while improving bending resistance.

The patent combines the touch circuit fabrication process with the pixel definition layer formation process. Both structures are created simultaneously using the same material deposition and patterning steps, eliminating the need for separate touch circuit fabrication steps. This reduces manufacturing complexity and increases product yields by minimizing process variations and defects.

The pixel definition layer is designed to serve multiple functions: defining pixel boundaries, providing structural support, and forming the touch circuit. This multi-functionality eliminates the need for dedicated touch circuit materials and processes, simplifying manufacturing and improving yields through standardized production steps.