Patent ID: 7435630
Filing Date: 2008-10-14
Classification: H01L

Abstract:
1. A method for fabricating an active matrix type organic light emitting diode (AMOLED) device, the method comprising: forming a buffer layer on an insulation substrate; forming a semiconductor layer on the buffer layer; forming a gate insulation film on the semiconductor layer; forming a gate electrode and a capacitor lower electrode on the gate insulation film and forming a drain electrode region and a source electrode region at the semiconductor layer below both sides of the gate electrode; forming a first interlayer insulation film on a surface of the resulting structure; forming a cathode electrode and a capacitor upper electrode on the first interlayer insulation film; forming a second interlayer insulation film on a surface of the resulting structure; forming a plurality of contact holes exposing portions of the cathode electrode, the drain electrode region, the source electrode region, the capacitor upper electrode and the capacitor lower electrode through at least one etching process; forming a first conductive layer pattern connecting the cathode electrode and the drain electrode region, and a second conductive layer pattern connecting the source electrode region and the capacitor upper electrode through the plurality of contact holes; forming a passivation film on a surface of the resulting structure and patterning the passivation film to form an opening exposing a portion of the cathode electrode; forming an EL layer inside the opening and forming an anode electrode thereon; and forming a plurality of recesses on a surface of at least one of the buffer layer, the gate insulation layer, the first interlayer insulation film, the second interlayer insulation film and the passivation film, wherein the plurality of recesses are formed such that they are not located at the same correspondence positions of overlapped upper and lower layers.