HEAT-STABILIZED POLY(ETHYLENE NAPHTHALATE) FILM FOR FLEXIBLE ELECTRONIC AND PHOTOELECTRONIC DEVICES

摘要

PROBLEM TO BE SOLVED: To provide a substrate in an electronic device or a photoelectronic device containing a conjugated conductive polymer, using a composite film comprising a substrate layer, which includes a film whose shrinkage is less than 1% at 230°C for 30 minutes, and a barrier layer on a surface of the substrate layer.

SOLUTION: A layer containing poly(ethylene naphthalate) is treated by stretching, heat-setting and heat-stabilizing processes to produce a substrate layer including a film whose shrinkage is less than 1% at 230°C for 30 minutes. A composite film is obtained by forming a barrier layer on a surface of the substrate layer.

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