Display Panel Vertical Sub-Pixel Arrangement

The patent introduces a vertical dimension by placing sub-pixels at different heights relative to the base substrate. First sub-pixels are positioned at a first height while second and third sub-pixels are positioned at a second height, creating spatial separation in the vertical direction. This dimensional change allows sub-pixels to be arranged closely in the horizontal plane without causing carrier migration interference, thereby achieving high resolution while preventing harmful interactions between adjacent sub-pixels.

Instead of increasing horizontal spacing to prevent interference, the patent utilizes the vertical dimension by positioning different sub-pixels at different heights. This allows sub-pixels to maintain close horizontal spacing for high resolution while achieving effective separation through vertical displacement, eliminating the need for large horizontal gaps that would reduce resolution.

The patent eliminates the need for sub-pixel defining layers by using vertical positioning to prevent material blending. Since sub-pixels are located at different heights, organic light-emitting materials for adjacent sub-pixels cannot mix during the deposition process. This approach simplifies the device structure by removing the defining layer while still achieving effective material separation.

The patent resolves the conflict between manufacturing simplicity and preventing carrier interference by introducing vertical positioning variation. While this requires precise control of sub-pixel heights, it eliminates the need for complex defining layers and allows for simplified material deposition processes. The vertical separation prevents carrier migration while maintaining manufacturing feasibility through advanced deposition techniques.