Carbazole Compound Material for High-Resolution Imaging Sensors

The patent transitions from planar color filter arrangement to a three-dimensional stacked architecture where multiple photoelectric conversion layers with different color sensitivities are stacked vertically. This dimensional change allows multiple color channels to occupy the same pixel footprint, thereby improving resolution without complicating the manufacturing process, as each layer can be independently optimized and deposited using standard semiconductor fabrication techniques.

The patent employs composite material structures combining inorganic semiconductor layers with organic semiconductor layers in a stacked configuration. The inorganic semiconductor provides high quantum efficiency and stable performance, while the organic semiconductor layers enable wavelength-selective absorption. This composite approach achieves both high resolution through vertical stacking and maintains manufacturing feasibility through established material deposition processes.

The patent resolves the contradiction by moving from two-dimensional planar color filter arrangement to three-dimensional stacked photoelectric conversion layers. Each layer is optimized for specific wavelength regions, enabling simultaneous capture of multiple color channels within the same pixel area. This vertical stacking increases light utilization efficiency without proportionally increasing device complexity, as each layer can be independently designed and fabricated using standard semiconductor processing.

The patent segments the photoelectric conversion function across multiple thin layers, each responsible for detecting specific wavelength ranges. This segmentation allows specialized materials to be used in each layer for optimal wavelength selectivity, thereby improving overall light utilization efficiency while keeping individual layer complexity manageable through modular design.