Stacked Passive-Drive Display Layout for Bright High-Definition Pixels

The patent transitions from a two-dimensional arrangement of subpixels to a three-dimensional stacked structure. Multiple LED stacks (red, green, blue) are vertically stacked to form a single pixel, and multiple such pixels are arranged in layers. This dimensional change allows increasing the total number of pixels for high-definition display while maintaining sufficient area for each subpixel to ensure brightness, as the vertical stacking effectively multiplies the pixel count without reducing the horizontal area available for light emission.

The patent divides the display into multiple independently controllable LED stacks (red, green, blue) within each pixel. Each LED stack can be driven separately through time-division multiplexing, allowing the passive drive method to control individual stacks sequentially. This segmentation enables the use of simple passive driving circuits while maintaining sufficient energization time for each stack by activating them in alternating time slots, thus resolving the contradiction between circuit simplicity and brightness maintenance.

The patent implements a nested structure where multiple LED stacks are contained within a single pixel unit, and multiple pixels are nested in layered arrangements. Specifically, red, green, and blue LED stacks are nested vertically within each pixel, and these pixel units are further nested in a three-dimensional array. This nesting approach increases the effective pixel density by utilizing vertical space, while each nested subpixel maintains its required area for adequate light emission, thus achieving high pixel density without sacrificing brightness.