Square-resistance-gradient internal parallel metallized safety film

A metallization and safety film technology, applied in fixed capacitor parts, thin film/thick film capacitors, fixed capacitor electrodes, etc., can solve the problems of reducing the dielectric withstand voltage of capacitors, difficult self-healing, and increasing the cost of capacitor manufacturing. The effect of reducing the overall equivalent series resistance, high effective area utilization, and improving the working field strength of the medium
CN108565115AInactive Publication Date: 2018-09-21钱立文
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
钱立文
Publication Date
2018-09-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a square-resistance-gradient internal parallel metallized safety film, which comprises a base film (1); a clad layer thickening band (2) evaporated along the longitudinal centeraxis of an evaporation surface of the base film (1); electrode plate units (3) distributed symmetrically at the two sides of the clad layer thickening band (2), wherein the electrode plate units (3)are separated into the continuously distributed electrode plate units (3) by blank separation belts (4) in longitudinal continuous distribution; and blank margin bands (5) distributed symmetrically atthe other sides of the electrode plate units (3). The plating thickness of the electrode plate units (3) is in trapezium distribution transversely, is largest at the place adjacent to the clad layerthickening band (2), and is smallest at the place adjacent to the blank margin bands (5), and thus a square-resistance-gradient electrode structure is formed. The thin-film capacitor is good in self-healing performance, high in utilization rate of the electrode coating effective area and low in total equivalent series resistance of the metalized coating electrode, and can effectively reduce the size of the capacitor and reduce production cost.
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Description

technical field

[0001] The invention relates to a metallized thin film material for the production and manufacture of thin film capacitors, in particular to a parallel-connected metallized safety film with a gradual change in square resistance. Background technique

[0002] Film capacitors are widely used because of their good pressure resistance and self-healing properties. Metallized films are important materials for the production of film capacitors. High-purity metals (such as Al, ZN) are melted, evaporated, and precipitated in a high vacuum state. On the dielectric base film, the film after forming a very thin metal coating on the surface of the dielectric base film is the metallized film; the resistance value of the unit square area of ​​the metal coating on the metallized film is called square resistance (ie square resistance, Expressed in Ω / □), this kind of capacitor made of metallized film has the same withstand voltage performance as the self-healing of the metal c...

Claims

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