Nanolithographic Embedded Passive Device Manufacturing

The patent replaces conventional mechanical lithographic patterning methods with a self-assembly approach using block copolymers. The block copolymer system spontaneously forms nanoscale patterns through thermodynamic self-organization, eliminating the need for top-down mechanical patterning that loses precision below 100nm. This allows precise control of dielectric layer thickness at the nanoscale while maintaining manufacturing feasibility.

The patent changes the physical state and processing parameters of dielectric materials by using block copolymers that can be processed from solution and then thermally or chemically crosslinked. This parameter change enables precise thickness control through solution casting and self-assembly rather than mechanical deposition, achieving sub-100nm precision that was previously unattainable with conventional methods.

The patent uses block copolymer composite materials consisting of different polymer blocks that self-assemble into ordered nanoscale structures. These composite materials provide both the thin dielectric layer needed for high capacitance and the structural integrity needed for reliability. The crosslinked network formed after processing creates a robust, defect-free dielectric layer that maintains reliability even at sub-100nm thicknesses.

The patent applies crosslinking treatment to the block copolymer dielectric layer before final device operation. This pre-treatment creates a crosslinked network that cushions against mechanical stress, electrical breakdown, and environmental degradation, preventing reliability issues that would normally occur in ultra-thin dielectric layers. The crosslinked structure provides inherent defect compensation and stress management.

The block copolymer system performs self-service by automatically forming precise nanoscale patterns through self-assembly without requiring complex external patterning equipment. The material itself contains the patterning information in its molecular structure, and it self-organizes into the desired geometry during processing. This eliminates the need for sophisticated lithographic tools while achieving superior precision.

The patent changes the processing parameters from mechanical deposition and patterning to solution-based self-assembly followed by crosslinking. This parameter change transforms a complex, equipment-intensive process into a simpler, chemistry-driven process that naturally achieves high precision through thermodynamic self-organization rather than mechanical control.

The patent exploits the vertical dimension by creating highly ordered multilayer structures through block copolymer self-assembly. The block copolymers form vertically stacked lamellae or cylindrical phases with precise nanoscale spacing, effectively utilizing the third dimension to pack more dielectric layers within a smaller footprint. This vertical stacking enables high integration density while maintaining or increasing total capacitance through multiple active interfaces.

The patent segments the capacitor structure into multiple thin dielectric layers separated by conductive blocks within the block copolymer architecture. This segmentation creates many small capacitor units stacked vertically, where each interface contributes to the total capacitance. The segmented structure allows high integration density on the substrate while the vertical stacking maintains high total capacitance through additive contribution of multiple layers.