Capacitor package structure with functional coating

Abstract

A capacitor package structure is provided. The capacitor package structure includes a capacitor element which includes a functional coating disposed on a surface thereon and a conductive polymer layer disposed on the functional coating. A conductive polymer composite material in the conductive polymer layer is connected to the surface of the capacitor element through a silane coupling agent in the functional coating. The silane coupling agent has a general formula of Y(CH2)nSiX3, wherein n is an integer of 0 to 3. X is same or different substituent selected from the group consisting of: chloride, methoxy group, ethoxy group, methoxyethoxy group, and acetoxy group, and Y is a vinyl group, an amino group, an epoxy group, a methacryloyloxy group, a thiol group, a uramino group or an isobutyl group.

What is claimed is: 
     
         1 . A capacitor package structure, including a capacitor element which includes a functional coating disposed on a surface thereon and a conductive polymer layer disposed on the functional coating; wherein a conductive polymer composite material in the conductive polymer layer is connected to the surface of the capacitor element through a silane coupling agent in the functional coating; wherein the silane coupling agent has a general formula of Y(CH 2 ) n SiX 3 , wherein n is an integer of 0 to 3, X is same or different substituent selected from the group consisting of: chloride, methoxy group, ethoxy group, methoxyethoxy group and acetoxy group, and Y is a vinyl group, an amino group, an epoxy group, a methacryloyloxy group, a thiol group, a uramino group or an isobutyl group. 
     
     
         2 . The capacitor package structure according to  claim 1 , wherein the conductive polymer composite material is a poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) composite having a D50 average particle size ranging from 1 to 25 nanometers.