Multilayer Capacitor Low ESL High ESR Local Quality

The patent applies local quality by creating capacitor portions with different ESR characteristics within the same capacitor body. Specifically, certain capacitor portions are designed with higher ESR than others, allowing the capacitor to simultaneously achieve low overall ESR for energy loss reduction while maintaining appropriate impedance characteristics for reliable noise absorption across frequency bands. This is accomplished by varying the structure or material properties of specific capacitor portions rather than uniformly reducing ESR throughout.

The patent resolves this contradiction by introducing capacitor portions with different ESR characteristics into the multi-layer structure. When increasing the number of ceramic layers and internal electrodes to achieve greater capacity, the invention ensures that not all capacitor portions have uniformly low ESR. Instead, some portions are designed with higher ESR to prevent impedance mismatch and signal distortion, while others maintain low ESR for effective decoupling. This localized differentiation allows the capacitor to simultaneously achieve high capacity and maintain signal integrity.

The patent applies local quality by creating capacitor portions with different ESR characteristics even within the LW-reversed structure. While the overall capacitor benefits from the LW-reversed geometry that reduces ESL through wider and shorter current paths, specific capacitor portions are designed with higher ESR. This is achieved by varying the internal electrode configuration, dielectric layer properties, or terminal electrode connections in specific regions, allowing the capacitor to simultaneously achieve low ESL for high-frequency performance and appropriate ESR levels to prevent impedance mismatch and signal distortion.