LED Metallic Plasma Nanostructures for Light Extraction

The patent introduces three-dimensional nanostructures (such as nanowires, nanorods, or nanopillars) on the LED surface to create additional light extraction pathways in vertical and lateral dimensions. These 3D structures scatter light at multiple angles and reduce total internal reflection, allowing light that would normally be trapped to escape through different spatial dimensions, thereby resolving the contradiction between light generation and light extraction.

The patent employs porous or textured surface structures on the LED packaging or semiconductor layer. These porous structures increase the surface area and create multiple interfaces that facilitate light scattering and extraction. The porous morphology reduces the refractive index mismatch effect by providing gradual transitions and multiple escape routes for photons, thus improving light extraction efficiency while maintaining the high refractive index material benefits.

The patent segments the continuous electrode or packaging structure into discrete, patterned elements. By dividing the electrode into segmented or discontinuous structures, light can pass through the gaps between segments rather than being completely absorbed. This segmentation approach maintains manufacturing simplicity through standard photolithography and deposition processes while effectively reducing light absorption losses.

The patent transitions from planar two-dimensional structures to three-dimensional textured or nanostructured surfaces. This dimensional change creates additional light extraction interfaces and scattering centers that redirect light away from absorbing electrodes. The 3D structures can be formed using conventional semiconductor fabrication techniques, balancing manufacturing ease with improved light extraction performance.