Patent ID: 7947987
Filing Date: 2011-05-24
Classification: H01L

Abstract:
1. An organic light emitting display comprising: a transistor on a substrate; a cathode electrode that is positioned on the transistor to be connected to a source or a drain of the transistor; a bank layer having an opening on the cathode electrode; a natural oxide layer formed on the cathode electrode, wherein the natural oxide layer is removed by performing in an atmosphere of a transformer coupled plasma chamber (TCP) to which a pressure of 2 to 10 mTorr, an Ar injection amount of 10 to 50 sccm, a chamber power of 300 to 1000 W, and a bias power of 100 to 300 W are applied; an insulating buffer layer on the cathode electrode, wherein the insulating buffer layer is formed of aluminum nitride (AlNx) or aluminumoxide (AlO an organic light emitting layer on the insulating buffer layer; and an anode electrode on the organic light emitting layer.