US 8,558,239 B2 · Organic light emitting display device and manufacturing method thereof

Abstract

An organic light emitting display having an active layer of a thin film transistor formed on a substrate, a first conductive layer formed at an edge of the active layer, a first insulation layer formed on the substrate and the first conductive layer, a second conductive layer corresponding to a central area of the active layer formed on the first insulation layer, a fanout lower electrode separated a predetermined distance from the second conductive layer, a pixel electrode, a third conductive layer formed on the second conductive layer, a fanout upper electrode formed on the fanout lower electrode, a second insulation layer formed on the third conductive layer, the fanout upper electrode, and the pixel electrode, and source and drain electrodes contacting the pixel electrode and formed on the second insulation layer.

Drawings

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Drawings

Claims19

Dependent claims

An organic light emitting display device comprising:

an active layer of a thin film transistor formed on a substrate;
a first conductive layer separately formed at opposite edge portions of the active layer;
a first insulation layer formed on the substrate and the first conductive layer;
a second conductive layer formed to correspond to a central area of the active layer with the first insulation layer interposed therebetween;
a fanout lower electrode separated a predetermined distance from the second conductive layer and formed of the same material in the same layer as that of the second conductive layer;
a pixel electrode separated a predetermined distance from the second conductive layer and formed of the same material in the same layer as that of the second conductive layer;
a third conductive layer formed on the second conductive layer;
a fanout upper electrode formed on the fanout lower electrode and formed of the same material in the same layer as that of the third conductive layer;
a second insulation layer formed on the third conductive layer, the fanout upper electrode, and the pixel electrode;
source and drain electrodes contacting the pixel electrode and formed on the second insulation layer;
a first lower electrode of a capacitor separated from a predetermined distance from the active layer and formed of the same material in the same layer as that of the active layer;
a first upper electrode formed on the first lower electrode of the capacitor and formed of the same material in the same layer as that of the first conductive layer;
a second lower electrode formed on the first upper electrode of the capacitor and formed of the same material in the same layer as that of the second conductive layer with the first insulation layer interposed therebetween;
and
a second upper electrode formed on the second lower electrode of the capacitor and formed of the same material in the same layer as that of the third conductive layer.

12 more elements

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

sequentially forming a semiconductor layer and a first conductive layer on and above a substrate and patterning the semiconductor layer and the first conductive layer into an active layer and source/drain areas of a thin film transistor, in a first mask process;
forming a first insulation layer on a structure of the first mask process, sequentially forming a second conductive layer and a third conductive layer on and above the first insulation layer, and simultaneously patterning the first insulation layer, the second conductive layer, and the third conductive layer into a gate lower electrode and a gate upper electrode of the thin film transistor, a lower electrode and an upper electrode of a fanout, and a pixel electrode, in a second mask process;
forming a second insulation layer on a structure of the second mask process and removing the second insulation layer to have part of the source/drain areas and part of the pixel electrode exposed, in a third mask process;
forming a fourth conductive layer on a structure of the third mask process and patterning the fourth conductive layer into source/drain electrodes of the thin film transistor, in a fourth mask process;
and
forming a third insulation layer on a structure of the fourth mask process and removing the second insulation layer and the third insulation layer to have the pixel electrode exposed, in a fifth mask process.

3 more elements

Dependencies are inferred from the claim text.

Description6,393 words

Summary1,441 words

#This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C §119 from an application entitled ORGANIC LIGHT EMITTING DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF earlier filed in the Korean Industrial Property Office on Nov. 11, 2009, and there duly assigned Serial No. 10-2009-0108659 by that Office.

#1. Field of the Invention

#The present invention relates to an organic light emitting display device and a manufacturing method thereof, and more particularly, to an organic light emitting display device having a simplified manufacturing process, and a manufacturing method thereof.

Brief description of the drawings6 figures

#A more complete appreciation of the present invention, and many of the attendant advantages thereof, will become readily apparent as the same becomes better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings in which like reference symbols indicate the same or similar components, wherein:

#FIGS. 1-5 are cross-sectional views schematically illustrating the manufacturing process according to a first mask process of an organic light emitting display device according to an exemplary embodiment of the present invention;

#FIGS. 6-9 are cross-sectional views schematically illustrating the manufacturing process according to a second mask process of an organic light emitting display device according to an exemplary embodiment of the present invention;

Detailed description4,711 words

#The attached drawings for illustrating exemplary embodiments of the present invention are referred to in order to gain a sufficient understanding of the present invention, the merits thereof, and the objectives accomplished by the implementation of the present invention. Hereinafter, the present invention will be described in detail by explaining exemplary embodiments of the invention with reference to the attached drawings. Like reference numerals in the drawings denote like elements.

#FIGS. 1-15 are cross-sectional views schematically illustrating processes of manufacturing an organic light emitting display device 1 according to the present invention. FIG. 16 is a cross-sectional view of the organic light emitting display device 1 formed according to the above manufacturing processes.

#Referring to FIG. 16, the organic light emitting display device 1 includes a substrate 10, a buffer layer 11, a thin film transistor (TFT) 2, a capacitor 3, an organic light emitting element 4, and a fanout 5. The substrate 10 may be formed of a transparent glass material having SiO2 as a main ingredient. Also, the substrate 10 may be formed of an opaque material or other materials such as a plastic material. However, for a bottom emission type organic light emitting display device in which an image is formed toward the substrate 10, the substrate 10 is formed of a transparent material.

Facts

Application

12/904,672Filed 14 Oct 2010

Priority

KR 10-2009-010865911 Nov 2009

Published

US 2011/0108848 A112 May 2011

Granted

15 Oct 2013

Term ends

14 May 2031

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 212 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification3 codes

H10K 59/1213
Characterised by the geometry or disposition of pixel elements: the pixel elements being TFTs
H10K 59/124
Active-matrix OLED [AMOLED] displays: insulating layers formed between TFT elements and OLED elements
H10K
Organic electric solid-state devices

Timeline

11 Nov 2009Priority claimedKR 10-2009-0108659
14 Oct 2010Application filedUS 12/904,672
28 Oct 2010Assigned to Samsung Mobile Display Co., Ltd.,assignment of assignor's interest
12 May 2011PublishedUS 2011/0108848 A1
21 Sep 2012Assigned to Samsung Display Co., Ltd.merger
15 Oct 2013GrantedUS 8,558,239 B2
12 Oct 2026TodayWithin its term
14 May 2031Term endsEstimated, includes 212 days of adjustment

Organic light emitting display device and manufacturing method thereof

Life of this patent

Organic light emitting display device and manufacturing method thereof

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims19

Description6,393 words

Drawings

Classification3 codes

Life of this patent

Description6,393 words