US 2012/0074412 A1 · Organic Light-Emitting Display Device and Method of Manufacturing the Same

Abstract

In an organic light-emitting display device and a method of manufacturing the same, the organic light-emitting display device comprises: an active layer of a thin film transistor which includes a semiconductor material, and which is formed on a substrate; a lower electrode of a capacitor which includes a semiconductor material doped with ion impurities, and which is formed on the substrate; a first insulating layer formed on the substrate so as to cover the active layer and the lower electrode; a first gate electrode which is a transparent conductive material, and which is formed on the first insulating layer; a second gate electrode which is a metal, and which is formed on the first gate electrode; an upper electrode of a capacitor which is formed on the first insulating layer and includes a transparent conductive material; source and drain electrodes of a thin film transistor which are electrically connected to the active layer; a pixel electrode formed on the first insulating layer, which is a semi-permeable metal electrically connected to one of the source and drain electrodes; an intermediate layer formed on the pixel electrode and including an organic emission layer; and an opposite electrode facing the pixel electrode with the intermediate layer therebetween.

Claims25

Dependent claims

An organic light-emitting display device, comprising:

an active layer of a thin film transistor which includes a semiconductor material, wherein the active layer is formed on a substrate;
a lower electrode of a capacitor which includes a semiconductor material doped with ion impurities, wherein the lower electrode is formed on the substrate;
a first insulating layer formed on the substrate so as to cover the active layer and the lower electrode;
a first gate electrode, which is a transparent conductive material and which is formed on the first insulating layer;
a second gate electrode, which comprises a metal and which is formed on the first gate electrode;
an upper electrode of a capacitor, wherein the upper electrode is formed on the first insulating layer and comprises a transparent conductive material;
source and drain electrodes of a thin film transistor, wherein the source and drain electrodes are electrically connected to the active layer;
a pixel electrode formed on the first insulating layer, wherein the pixel electrode includes a semi-permeable metal electrically connected to one of the source and drain electrodes;
an intermediate layer formed on the pixel electrode and including an organic emission layer;
and
an opposite electrode facing the pixel electrode with the intermediate layer disposed therebetween.

8 more elements

A method of manufacturing an organic light-emitting display device, the method comprising:

a first mask process for forming a semiconductor layer on a substrate, and for forming an active layer of a thin film transistor and a lower electrode of a capacitor by patterning the semiconductor layer;
a second mask process for forming a first insulating layer and a semi-permeable metal on the substrate so as to cover the active layer and the lower electrode, and for forming a pixel electrode by patterning the semi-permeable metal;
a third mask process for sequentially forming a transparent conductive layer and a first metal layer on the substrate so as to cover the pixel electrode, and for forming first and second gate electrodes of a thin film transistor and first and second upper electrodes of a capacitor by patterning the transparent conductive layer and the metal layer;
a fourth mask process for forming a second insulating layer so as to cover the pixel electrode, the first and second gate electrodes, and the first and second upper electrodes, and for forming openings exposing the pixel electrode, source and drain regions of the active layer, and the second upper electrode by patterning the second insulating layer;
a fifth mask process for forming a second metal layer so as to cover the pixel electrode and the openings, and for forming source and drain electrodes by patterning the second metal layer;
and
a sixth mask process for forming a third insulating layer so as to cover the source and drain electrodes, and for exposing the pixel electrode by patterning the third insulating layer.

4 more elements

Dependencies are inferred from the claim text.

Organic Light-Emitting Display Device and Method of Manufacturing the Same

Life of this patent

Organic Light-Emitting Display Device and Method of Manufacturing the Same

Life of this patent

Abstract

Claims25