Method of making a flexible circuit

摘要

A method of manufacturing a multilayer flexible circuit comprises providing first and second flexible substrates, each comprising a conductor layer and an insulator layer. The conductor layer of the first substrate is a patterned conductor layer. The first and second substrates are laminated together using a double belt press through which the substrates move in a continuous process. The method may include patterning the conductor layer of the first substrate and/or the conductor layer of the second substrate using an etching method that includes exposing a dry film resist on the conductor layer to a pattern by carrying out a plurality of exposures of adjacent and/or overlapping areas.

主权项

1. A method of manufacturing a multilayer flexible circuit, comprising:
providing first and second flexible substrates, each comprising a conductor layer and an insulator layer, the conductor layer of the first substrate being a patterned conductor layer; fixing together the first and second substrates; laminating the fixed first and second substrates together using a double belt press through which the substrates move in a continuous process; and patterning the conductor layer of the first substrate, the second substrate, or the first substrate and the second substrateby:
laminating a resist onto the conductor layer;exposing the resist to a pattern, wherein exposing comprises carrying out a plurality of exposures over adjacent areas of the resist layer, which adjacent exposures together define a single circuit;developing the resist;etching the conductor layer, thereby patterning it in correspondence to the developed resist; andstripping the resist layer.