Patent ID: 8319420
Filing Date: 2012-11-27
Classification: H01L

Abstract:
1. An organic light emitting diode display, including at least one organic light emitting diode (OLED) comprising: a first electrode; a hole injection layer on the first electrode; an emission layer on the hole injection layer; an electron injection layer on the emission layer; and a second electrode on the electron injection layer, wherein an absolute value of a difference between a work function of the first electrode and a work function of the second electrode is less than 0.5 eV, and the first electrode and the second electrode include materials different from each other; wherein the hole injection layer is an at least three-layer multilayer that includes a first hole injection layer, a second hole injection layer, and a third hole injection layer, wherein: wherein the electron injection layer is an at least three-layer multilayer that includes a first electron injection layer, a second electron injection layer, and a third electron injection layer, wherein: