Organic light emitting display device, driving method thereof, and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-9501978-B2
Application number	US-201414270947-A
Country	US
Kind code	B2
Filing date	May 6, 2014
Priority date	Dec 28, 2010
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

An organic light emitting diode (OLED) display with improved long range uniformity, driving method and manufacturing method are disclosed. The OLED display manufacturing method includes forming a first active pattern on a substrate, a gate insulating layer, a gate electrode overlapping at least a part of the first active pattern on the gate insulating layer and an interlayer insulating layer. The OLED display manufacturing method further includes forming a conductive layer pattern and an anode of an OLED, forming a pixel defining layer and forming the OLED by forming an organic emission layer and a cathode. The conductive layer pattern is formed to cover the gate electrode and contact a first power line on the interlayer insulating layer.

First claim

What is claimed is:

1. A method for manufacturing an organic light emitting diode (OLED) display, the method comprising:
forming a first active pattern on a substrate;
forming a gate insulating layer;
forming a gate electrode overlapping at least a part of the first active pattern on the gate insulating layer;
forming an interlayer insulating layer;
forming a conductive layer pattern and an anode of an OLED, the conductive layer pattern covering the gate electrode and contacting a first power line on the interlayer insulating layer, the conductive layer being a second electrode of a shield capacitor with a first electrode including the gate electrode;
forming a pixel defining layer; and
forming the OLED by forming an organic emission layer and a cathode.

2. The method of claim 1 , wherein the conductive layer pattern is formed to entirely cover the first electrode.

3. The method of claim 2 , wherein the forming of an interlayer insulating layer includes:
forming a first interlayer insulating layer;
forming a conductive layer pattern contacting the gate electrode and the first power line; and
forming a second interlayer insulating layer,
wherein the conductive layer pattern contacting the first power line is formed to entirely cover the first electrode including the gate electrode and the conductive layer pattern contacting the gate electrode.

4. The method of claim 1 , wherein the gate electrode is a gate electrode of a driving transistor for supplying a driving current of the OLED corresponding to an input data signal.

Assignees

• Samsung Display Co Ltd

Inventors

• Park Dong-Wook

Classifications

• G09G3/3225 Primary

  using an active matrix · CPC title

• G09G2300/0861

  with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes · CPC title

• G09G3/3233

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G2300/0819

  used for counteracting undesired variations, e.g. feedback or autozeroing · CPC title

• G09G2300/0866

  by means of changes in the pixel supply voltage · CPC title