Wet process forming method of filter in laminated medium

Abstract

Wet process forming method for laminated medium filter includes steps: flow-casting pulp of ceramics to produce lower end cover; putting Ag dots after fabricating leading-in ends of inner electrodes on film through printing Ag pulp; flow-casting to form film, and designing corresponding pattern of Ag pulp to be printed on film based on requirement; printing Ag dots on end of pattern of Ag pulp; printing pattern and Ag dots between two films repeatedly to number of layer needed; the said Ag dots are printed Ag dots, which are exposed out of the previous layer of flow-cast dielectric film; Ag electrodes are connected between upper and lower two dielectric layers; finally, printing leading out ends, and flow-casting film to produce upper end cover. Using physical properties mutual repulsion between exposed points of Ag pulp and pulp of ceramics, the method forms conductive path. Features are: simple without need of mechanical or laser boring, and accurate positioning.

Description

A Wet Forming Method of Laminated Dielectric Filter technical field The invention relates to a preparation method of a dielectric filter, in particular to a wet forming method of a dielectric filter. Background technique Multilayer dielectric filter products are mainly used in mobile communications and digital home appliances. At present, the production of filters mainly adopts dry process. The production process is shown in Figure 1. The production method is ceramic casting process, which will The dry film is made of the low-temperature sintered ceramic slurry of the agent, and the dry film is pressed and cut into a specified size according to a certain thickness, and then punched at the set position by mechanical or laser drilling, and then screen printed. The technology prints the Ag paste pattern on the diaphragm, and fills the Ag paste in the through hole to form a conductive path, and finally laminates and laminates the ceramic dry film printed with the Ag paste patt...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the problems of high manufacturing cost and complicated process of the filter in the prior art, and provide a filter wet forming method with low cost and simple process

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