Surface treatment process for fabricating a panel of an organic light emitting device

A surface treatment process for fabricating a panel of an organic light emitting device is disclosed. The surface treatment process for fabricating a panel of an organic light emitting device comprises following steps: forming on a substrate a plurality of first electrodes; forming a plurality of ramparts having T-shape cross-section on said substrate and selectively on said first electrodes through coating positive chemically amplified photoresist compositions having photo-acid generators on said substrate, exposing coated substrate to UV radiation to form latent pattern, post-exposure surface treating said photoresist on said substrate in a alkaline atmosphere and developing said photoresist; wherein each rampart protruding from said substrate and having an overhanging portion projecting in a direction parallel to said substrate; depositing organic electroluminescent media to the exposed area between said ramparts on said substrate; forming a plurality of second electrodes on said organic electroluminescent media on said substrate.