Organic light emitting diode display

Patent metadata

Field	Value
Publication number	US-10121415-B2
Application number	US-201514919680-A
Country	US
Kind code	B2
Filing date	Oct 21, 2015
Priority date	Jan 20, 2015
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

An OLED display according to an exemplary embodiment of the present disclosure includes: a substrate; a scan line on the substrate and configured to transmit a scan signal; a data line crossing the scan line and configured to transmit a data voltage; a driving voltage line crossing the scan line and configured to transmit a driving voltage, a portion of the driving voltage line being a second storage electrode; a switching transistor connected to the scan line and the data line; a driving transistor connected to the switching transistor and including a driving gate electrode; a driving connecting member connected to the driving gate electrode; a first storage electrode, the second storage electrode overlapping the first storage electrode; a shielding member connected to the second storage electrode and between the driving connecting member and the data line; and an organic light emitting diode connected to the driving transistor.

First claim

What is claimed is:

1. An organic light emitting diode display comprising:
a substrate;
a scan line on the substrate and configured to transmit a scan signal;
a data line crossing the scan line and configured to transmit a data voltage;
a driving voltage line crossing the scan line and configured to transmit a driving voltage, a portion of the driving voltage line being a second storage electrode;
a switching transistor connected to the scan line and the data line;
a driving transistor connected to the switching transistor, and comprising a driving gate electrode;
a driving connecting member connected to the driving gate electrode;
a first storage electrode being a portion of the driving gate electrode, the second storage electrode overlapping the first storage electrode;
a shielding member connected to the second storage electrode and between the driving connecting member and the data line in a plan view; and
an organic light emitting diode connected to the driving transistor,
wherein the shielding member is non-overlapping with the data line.

2. The organic light emitting diode display of claim 1 , wherein:
the data line comprises a first data line and a second data line adjacent to each other, and
the shielding member comprises a first shielding member between the driving connecting member and the first data line and a second shielding member between the driving connecting member and the second data line.

3. The organic light emitting diode display of claim 2 , wherein:
the first shielding member and the second shielding member are on the same layer as the scan line.

4. The organic light emitting diode display of claim 3 , further comprising:
a gate insulating layer on the substrate; and
an interlayer insulating layer covering the first shielding member and the second shielding member, the first shielding member and the second shielding member being on the gate insulating layer,
wherein the first shielding member and second shielding member are connected to the second storage electrode via a first shielding connection opening and a second shielding connection opening, the first shielding connection opening and the second shielding connection opening extending through the interlayer insulating layer.

5. The organic light emitting diode display of claim 4 , wherein:
the second storage electrode, the driving voltage line, the driving connecting member, and the data line are on the interlayer insulating layer.

6. The organic light emitting diode display of claim 1 , further comprising:
a compensation transistor configured to be turned on in accordance with the scan signal and to compensate a threshold voltage of the driving transistor, the compensation transistor being connected to a driving drain electrode of the driving transistor,
wherein the driving connecting member connects a compensation drain electrode of the compensation transistor and the driving gate electrode to each other.

7. The organic light emitting diode display of claim 1 , further comprising:
a semiconductor on the substrate and comprising a switching channel of the switching transistor and a driving channel of the driving transistor,
wherein the driving channel overlaps the driving gate electrode, and
wherein the driving channel is curved.

8. The organic light emitting diode display of claim 1 , wherein:
the driving voltage line comprises a first driving voltage line parallel to the data line and a second driving voltage line crossing the data line, and
the first driving voltage line is on the same layer as the data line, and the second driving voltage line is on the same layer as the scan line.

9. An organic light emitting diode display comprising:
a substrate;
a scan line on the substrate and configured to transmit a scan signal;
a data line and a driving voltage line crossing the scan line and configured to transmit a data voltage and a driving voltage, respectively;
a switching transistor connected to the scan line and the data line;
a driving transistor connected to the switching transistor;
a driving connecting member connected to a driving gate electrode of the driving transistor, the driving connecting member and the data line being formed on a same layer; and
an organic light emitting diode connected to the driving transistor,
wherein a first height between the substrate and the driving connecting member is different than a second height between the substrate and the data line.

10. The organic light emitting diode display of claim 9 , wherein the first height between the substrate and the driving connecting member is less than the second height between the substrate and the data line.

11. The organic light emitting diode display of claim 9 , further comprising:
a first gate insulating layer, a second gate insulating layer, and an interlayer insulating layer sequentially formed on the substrate,
wherein a portion of the driving connecting member is on the first gate insulating layer and the interlayer insulating layer, and
wherein the data line is on the first gate insulating layer, the second gate insulating layer, and the interlayer insulating layer.

12. The organic light emitting diode display of claim 11 , wherein:
the portion of the driving connecting member is aligned with a shielding opening in the second gate insulating layer.

13. The organic light emitting diode display of claim 12 , further comprising a first storage electrode,
wherein the scan line and the first storage electrode are between the first gate insulating layer and the second gate insulating layer.

14. The organic light emitting diode display of claim 12 , further comprising a compensation transistor configured to be turned on in accordance with the scan signal and to compensate a threshold voltage of the driving transistor,
wherein:
one end of the driving connecting member is connected to the driving gate electrode via a contact opening extending through the second gate insulating layer and the interlayer insulating layer, and
the other end of the driving connecting member is connected to a compensation drain electrode of the compensation transistor via a contact opening extending through the first gate insulating layer, the second gate insulating layer, and the interlayer insulating layer.

15. The organic light emitting diode display of claim 14 , further comprising a second storage electrode,
wherein:
the second storage electrode has a storage opening exposing the second gate insulating layer, and
one end of the driving connecting member and the driving gate electrode are connected via a contact opening extending through the storage opening.

16. The organic fight emitting diode display of claim 14 , wherein:
the driving connecting member is on the same layer as and spaced from the data line.

17. The organic light emitting diode display of claim 14 , further comprising:
a semiconductor on the substrate and comprising a switching channel of the switching transistor and a driving channel of the driving transistor, and
wherein the driving channel overlaps the driving gate electrode, and
wherein the driving channel is curved.

18. The organic light emitting diode display of claim 14 , wherein:
the organic light emitting diode comprises:
a pixel electrode connected to the driving transistor;
an organic emission layer on the pixel electrode; and
a common electrode on the organic emission layer, and
an initialization voltage line is on the same layer as the pixel electrode and is configured to transmit an initialization vol

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Dong Sun
• Kim Dong-Hwi
• Lee Jae-Sic

Classifications

• G09G3/3233 Primary

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

• H01L27/3265

  Electricity · mapped topic

• H01L27/1222

  Electricity · mapped topic

• H01L27/1225

  Electricity · mapped topic

• H01L27/3276

  Electricity · mapped topic