Preparation method and application of a chip type micro filter capacitor

Abstract

The invention belongs to the cross-technical field of filter capacitors, micro-nano manufacturing technology and electronic circuits, and discloses a preparation method and application of a chip-type micro-filter capacitor, which adopts a patterned 3D silicon-based frame (100) to conduct current collectors ( 101) and the coating of active material (102), make the electrode of capacitor, fix it on the lower part (103a) of the packaging case, coat the electrolyte (104); finally package the upper part of the case (103b) and reserve a conductive connection point, The conductive pin (105) is embedded in the shell to realize the chip design conductive pin of the capacitor. The present invention designs the overall flow process of the chip-type micro-filter capacitor, and realizes the customized manufacturing of the chip electrode through the semiconductor process; adopts a simple packaging structure, which is convenient for sealing; and manufactures a pair of embedded conductive pins with adjustable dimensions. The circuit board is electrically connected by spot welding, which ensures connection reliability and miniaturized integration. Finally, it is actually applied to the patch circuit board to realize the filtering function.

Description

technical field [0001] The invention belongs to the cross-technical field of filter capacitors, micro-nano manufacturing technology and electronic circuits, and more specifically, relates to a preparation method and application of a chip-type micro-filter capacitor, which is a customized manufacturing chip by means of micro-nano processing technology. The method of formulating miniature filter capacitors. Background technique [0002] The filter is an electrical component used to reduce or eliminate the influence of harmonics on the power system. It consists of a filter circuit composed of capacitors, inductors and resistors. Using its frequency selection function, you can filter out interference noise or perform spectrum analysis. For capacitors, its application fields are very wide, and it plays an important role in filtering, energy storage, bypass, coupling, timing, etc. in electronic circuits. Among these applications, filtering applications are the most common applic...

AI Technical Summary

Problems solved by technology

Due to the existence of the diaphragm, the traditional supercapacitor with a sandwich structure is prone to micro-short circuit, low ion transfer efficiency, and the upper and lower electrodes are not convenient for the bonding of the lead wire and the circuit board to conduct electricity.

At present, most filter capacitors are fixed and connected to the circuit board through two or more pins, which occupy a large area of ​​the circuit board and are not suitable for circuit boards with a small space, and the pins are easy to bend, and the fixed connection method is not reliable enough. Stable, not suitable for applications with strong shock or vibration

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