Patent ID: 8182304
Filing Date: 2012-05-22
Classification: H01L

Abstract:
1. A method of manufacturing an organic electroluminescent device, the method comprising: forming a first source electrode and a second source electrode over a substrate; forming a capacitor insulating layer over the substrate to cover at least the first source electrode and the second source electrode; forming first and second gate electrodes over the capacitor insulating layer each having a donut shape, wherein the location of the first and second gate electrodes correspond to the locations of the first source electrode and the second source electrode, respectively; forming a planarization film over the substrate to cover at least the first gate electrode and the second gate electrode; forming a mask of high molecular weight material over the planarization film; forming through-holes in the mask, the planarization film, and the capacitor insulating layer to expose upper surfaces of the first source electrode and the second source electrode and side surfaces of the planarization film, the first gate electrode, the second gate electrode, and the capacitor insulating layer; forming gate insulating films to cover the side surfaces of the planarization film, the first gate electrode, the second gate electrode, and the capacitor insulating layer exposed by the through-holes; forming an intermediate layer comprising at least an emission layer in each of the through-holes; removing the mask; forming a contact hole in the planarization film to expose a portion of the second gate electrode; and forming over the intermediate layers a first drain electrode in a location corresponding to the location of the first source electrode and a second drain electrode in a location corresponding to location of the second source electrode, wherein the first drain electrode is connected to the second gate electrode through the contact hole and wherein the first gate electrode, the first source electrode and the first drain electrode are formed such that either: wherein the second gate electrode, the second source electrode, and the second drain electrode are formed such that either: