Organic light emitting diode display

Patent metadata

Field	Value
Publication number	US-2016148985-A1
Application number	US-201514794167-A
Country	US
Kind code	A1
Filing date	Jul 8, 2015
Priority date	Nov 24, 2014
Publication date	May 26, 2016
Grant date	—

Abstract

Disclosed herein is an organic light emitting diode display, including a substrate, a first thin film transistor including a first active pattern on the substrate and a first gate electrode on the first active pattern, a data wire on the first gate electrode, a first interlayer insulating layer between the first gate electrode and the data wire, a second interlayer insulating layer positioned the first interlayer insulating layer and the data wire, and an organic light emitting diode positioned on the data wire and connected to the first active pattern.

First claim

What is claimed is:

1 . An organic light emitting diode display, comprising:
a substrate; a first thin film transistor including a first active pattern on the substrate and a first gate electrode on the first active pattern; a data wire on the first gate electrode; a first interlayer insulating layer between the first gate electrode and the data wire; a second interlayer insulating layer between the first interlayer insulating layer and the data wire; and an organic light emitting diode on the data wire and connected to the first active pattern.

2 . The organic light emitting diode display as claimed in claim 1 , wherein:
at least any one of the first interlayer insulating layer and the second interlayer insulating layer is an organic layer or an inorganic layer.

3 . The organic light emitting diode display as claimed in claim 1 , wherein:
at least any one of the first interlayer insulating layer and the second interlayer insulating layer is an organic layer and another one thereof is an inorganic layer.

4 . The organic light emitting diode display as claimed in claim 1 , wherein:
the data wire includes a gate bridge which contacts the first gate electrode through the first interlayer insulating layer and the second interlayer insulating layer.

5 . The organic light emitting diode display as claimed in claim 4 , wherein:
the first interlayer insulating layer includes a first contact hole through which the gate bridge passes, and the second interlayer insulating layer includes a second contact hole through which the gate bridge passes.

6 . The organic light emitting diode display as claimed in claim 5 , wherein the first interlayer insulating layer is an inorganic layer, and the second interlayer insulating layer is an organic layer.

7 . The organic light emitting diode display as claimed in claim 6 , wherein:
the first contact hole of the first interlayer insulating layer is formed by etching, and the second contact hole of the second interlayer insulating layer is formed by exposure and development

8 . The organic light emitting diode display as claimed in claim 5 , wherein:
the first interlayer insulating layer is an organic layer, and the second interlayer insulating layer is an inorganic layer.

9 . The organic light emitting diode display as claimed in claim 8 , wherein:
the second contact hole of the second interlayer insulating layer is formed by etching, and the first contact hole of the first interlayer insulating layer is formed by etching using the second interlayer insulating layer as a mask.

10 . The organic light emitting diode display as claimed in claim 4 , further comprising:
a second thin film transistor including a second active pattern connected to the first active pattern and a second gate electrode on the second active pattern; a third thin film transistor including a third active pattern which contacts the gate bridge to connect between the first active pattern and the first gate electrode, and a third gate electrode on the third active pattern; and a first scan line on the second active pattern and crossing the second active pattern and the third active pattern, respectively, the first scan line being connected to the second gate electrode and the third gate electrode, wherein the data wire includes: a data line adjacent to the gate bridge on the first scan line to cross the first scan line and connected to the second active pattern; and a driving power line adjacent the data line, crossing the first scan line, and connected to the first active pattern.

11 . The organic light emitting diode display as claimed in claim 10 , further comprising:
a capacitor electrode between the first gate electrode and the first interlayer insulating layer to be connected to the driving power line through the first interlayer insulating layer and the second interlayer insulating layer, the capacitor electrode overlapping the first gate electrode to form a capacitor along with the first gate electrode.

12 . The organic light emitting diode display as claimed in claim 11 , wherein:
the first gate electrode and the capacitor electrode are each made of metal.

13 . The organic light emitting diode display as claimed in claim 11 , wherein:
the capacitor electrode includes an opening through which a portion of the first gate electrode is exposed and the gate bridge is connected to the first gate electrode through the opening.

14 . The organic light emitting diode display as claimed in claim 10 , wherein:
the first active pattern, the second active pattern, and the third active pattern are each positioned on the same layer, and the data line, the driving power line, and the gate bridge are each positioned on the same layer.

15 . The organic light emitting diode display as claimed in claim 10 , further comprising:
a fourth thin film transistor including a fourth active pattern connected to the first gate electrode and the third active pattern, and a fourth gate electrode on the fourth active pattern; a second scan line on the fourth active pattern, crossing the fourth active pattern, and connected to the fourth gate electrode; and an initialization power line on the second scan line and connected to the fourth active pattern.

16 . The organic light emitting diode display as claimed in claim 15 , wherein:
the first gate electrode, the second gate electrode, the third gate electrode, the fourth gate electrode, the first scan line, and the second scan line are each on the same layer.

17 . The organic light emitting diode display as claimed in claim 15 , further comprising:
a seventh thin film transistor including a seventh active pattern connected to the fourth active pattern and a seventh gate electrode on the seventh active pattern; and a third scan line on the seventh active pattern, crossing the seventh active pattern, and connected to the seventh gate electrode.

18 . The organic light emitting diode display as claimed in claim 10 , further comprising:
a fifth thin film transistor including a fifth active pattern which connects between the first active pattern and the driving power line, and a fifth gate electrode on the fifth active pattern; a sixth thin film transistor including a sixth active pattern which connects between the first active pattern and the organic light emitting diode, and a sixth gate electrode on the sixth active pattern; and a light emitting control line crossing the fifth active pattern and the sixth active pattern, respectively and connected to the fifth gate electrode and the sixth gate electrode, respectively.

19 . The organic light emitting diode display as claimed in claim 18 , wherein:
the first gate electrode, the second gate electrode, the third gate electrode, the fifth gate electrode, the sixth gate electrode, the light emitting control line are each on the same layer.

20 . The organic light emitting diode display as claimed in claim 1 , wherein the second interlayer insulating layer has a lower dielectric constant than the first interlayer insulating layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Park Young Woo
• Lee Wang Woo

Classifications

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G2310/0262

  The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes · CPC title

• G09G2300/043

  Compensation electrodes or other additional electrodes in matrix displays related to distortions or compensation signals, e.g. for modifying TFT threshold voltage in column driver · 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