Vertically Stacked Micro-LED Display for Brightness and Crosstalk

The patent transitions from horizontal arrangement of Micro-LEDs to a vertical stacked arrangement. Three layers of Micro-LEDs (red, green, and blue) are stacked in the thickness direction, allowing each layer to have sufficient size for high light emitting efficiency while achieving high resolution through the vertical integration. This dimensional change resolves the contradiction by decoupling resolution (achieved through vertical stacking density) from light emitting efficiency (maintained through adequate layer size).

The patent implements a nested structure where three layers of Micro-LEDs are stacked vertically within the same pixel footprint. Each layer is positioned to overlap with the others in the vertical direction, creating a compact nested arrangement that maximizes space utilization. This nesting allows high resolution through dense vertical packing while maintaining high light emitting efficiency through adequate individual layer sizes.

The patent divides the pixel structure into three distinct vertical layers, each containing Micro-LEDs of a specific color (red, green, or blue). By segmenting the light emission sources into separate vertical layers with precise spatial positioning, the patent prevents optical crosstalk between different color subpixels while maintaining high resolution through the segmented vertical architecture.

The patent introduces light guide structures as intermediaries between the Micro-LED layers and the external environment. These light guides are designed to selectively transmit light from specific layers while blocking light from other layers, thereby preventing optical crosstalk. The light guides act as mediators that enable high resolution through dense stacking while eliminating harmful optical interference between adjacent layers.