Patent ID: 8653511
Filing Date: 2014-02-18
Classification: H01L

Abstract:
1. An organic light emitting diode (OLED) display, comprising: a substrate; a first electrode formed on the substrate; a barrier rib formed on the substrate and having an opening exposing the first electrode; an organic emission layer formed on the first electrode; and a second electrode formed on the organic emission layer; wherein the barrier rib includes an isolating groove formed between the organic emission layer and organic emission layers of neighboring pixels, said isolating groove has a dual step shape that is a depression in the barrier rib, said isolating groove comprising: a first rectangular step structure having two sides walls attached to a bottom wall at 90 degree angles; and a second rectangular step structure having two sides walls attached to a bottom wall at 90 degree angles, said second rectangular step structure is disposed as an indentation in the bottom wall of the first rectangular step structure.