Patent ID: 6616496
Filing Date: 2003-09-09
Classification: H01L

Abstract:
A method of forming a polyimide-isolating wall with a reverse-trapezoid cross-section on an organic electroluminescent display panel that comprises a substrate and a plurality of first electrodes, comprising:performing a coating process to coat a photosensitive-polyimide (PSPI) isolating layer on the panel; performing a prebaking process on the isolating layer; performing an exposure process on the isolating layer after the prebaking process; performing a post-exposure baking (PEB) process on the isolating layer after the exposure process; performing a developing process on the isolating layer after the post-exposure baking process to form the polyimide-isolating wall with the reverse-trapezoid cross-section; and performing a curing process on the polyimide-isolating wall with the reverse-trapezoid cross-section; wherein the polyimide-isolating wall with the reverse-trapezoid cross-section possesses electric, thermal and mechanical stability and thereby improves luminescent stability and lifetime of the panel.