发明公开
EP1609026A2 PROCESS FOR PRODUCING A HEAT RESISTANT RELIEF STRUCTURE 审中-公开
方法耐热浮雕结构

PROCESS FOR PRODUCING A HEAT RESISTANT RELIEF STRUCTURE
摘要:
A process for producing a heat resistant relief structure on a substrate, the process comprising the steps of: (a) providing a substrate; (b) in a first coating step, coating the substrate with a composition comprising a polyamic acid and gamma-butyrolactone to form a layer of polyamic acid having a thickness of at least about 0.5 umicro;m; (c) baking the layer of polyamic acid at a temperature or temperatures below 140 °C; (d) in a second coating step, coating a layer of a photoresist over the layer of polyamic acid to form a bilayer coating; (e) exposing the bilayer coating to radiation
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