A new thin film sensor and its production process

Abstract

The invention provides a novel film sensor and a production technology thereof. The novel film sensor comprises upper and lower monomer contact film layers prepared from polyimides film substrates, and a middle filling film layer is arranged between the upper and lower monomer contact film layers; the lower surface of the upper monomer contact film layer is printed with an upper conductive silver slurry layer, an upper conductive plastic resin slurry layer is printed on the upper conductive silver slurry layer, and a non-use function layer on the upper conductive plastic resin slurry layer is printed with an upper insulated resin protective layer; and the upper surface of the lower monomer contact film layer is printed with a lower conductive silver slurry layer, the lower conductive silver slurry layer is printed with a lower conductive plastic resin slurry layer, and a non-use function layer on the lower conductive plastic resin slurry layer is printed with a lower insulated resin protective layer. The upper monomer contact film layer is pasted to lower monomer contact film layer via first and second hot-pressing pasted films, and then an output port of a terminal member is connected. The novel film sensor is simple in technology, suitable for large-scale production and lower in the production cost.

Description

technical field [0001] The invention relates to the technical field of electronic components, in particular to a novel thin film sensor; the invention also relates to a production process of the novel thin film sensor. Background technique [0002] As a position sensor, the film sensor is widely used in various places where position information needs to be fed back, such as seat position sensing in the automotive industry, various recorders in the instrument industry, etc. The film sensor is a typical contact absolute angle sensor, which has a sliding contact on the resistive film (including carbon resistive film, conductive plastic film, metal resistive film, conductive ceramic film, etc.), and the position of the contact point is changed by external action. Change the ratio of the upper and lower resistance of the resistive film to realize the change of the output terminal voltage with the external position. The thin-film sensor realizes the change of the output voltage by...

AI Technical Summary

Problems solved by technology

In the existing thin-film sensors on the market, the carbon film on the surface of the resistor is in contact with the brush to form a conductive output. The characteristics of this contact type are that the product life is low and the surface of the resistor is easy to wear. The production process is complicated and not suitable for mass production

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