Organic light-emitting display device, method of repairing the same, and method of driving the same

Patent metadata

Field	Value
Publication number	US-9256109-B2
Application number	US-201314062816-A
Country	US
Kind code	B2
Filing date	Oct 24, 2013
Priority date	Apr 1, 2013
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

An organic light-emitting display device includes a plurality of emission pixels aligned in columns and rows, each of the emission pixels including an emission device and a first pixel circuit coupled to the emission device, a dummy pixel including a second pixel circuit in each column of the emission pixels, and a repair line in each column, wherein a same data signal is provided to one of the emission pixels coupled to the repair line and to the dummy pixel coupled to the repair line, and wherein the emission pixels are configured to simultaneously emit light.

First claim

What is claimed is:

1. An organic light-emitting display device comprising:
a plurality of emission pixels aligned in columns and rows, each of the emission pixels comprising an emission device and a first pixel circuit coupled to the emission device;
at least one dummy pixel in each column, each dummy pixel comprising a second pixel circuit; and
a plurality of repair lines, each of the repair lines extending along the emission pixels in each column, wherein each of the repair lines is configured to be electrically coupled to the emission device of one of the emission pixels and to the second pixel circuit of the at least one dummy pixel in each column.

2. The organic light-emitting display device of claim 1 , wherein a same data signal is provided to one of the emission pixels and the dummy pixel coupled to a same repair line at a different time, and
wherein the emission pixels are configured to simultaneously emit light.

3. The organic light-emitting display device of claim 1 , wherein the emission pixels are at a display area, and wherein the dummy pixel is at a non-display area and at least one of a first row and a last row.

4. The organic light-emitting display device of claim 1 , wherein dummy pixels in a same row are connected to a same scan line.

5. The organic light-emitting display device of claim 1 , wherein at least one of the repair lines is electrically coupled to the emission device of one of the emission pixels and to the second pixel circuit of one dummy pixel, in a same column.

6. The organic light-emitting display device of claim 5 , wherein the emission pixel coupled to one of the repair lines comprises a first conductive unit contacting an anode of the emission device, and first contact metal for coupling the first conductive unit to the repair line, and
wherein the dummy pixel coupled to the one of the repair lines comprises a second conductive unit extending from the second pixel circuit, and second contact metal for coupling the second conductive unit to the repair line.

7. The organic light-emitting display device of claim 6 , wherein the first conductive unit and the repair line are at a same layer.

8. The organic light-emitting display device of claim 6 , wherein the repair line is at a same layer and comprises a same material as source and drain electrodes of thin film transistors of the first and second pixel circuits.

9. The organic light-emitting display device of claim 6 , wherein the repair line is at a same layer and comprises a same material as the anode.

10. The organic light-emitting display device of claim 1 , further comprising at least one insulating layer between one of the repair lines and a first conductive unit contacting an anode of the emission device of one of the emission pixels coupled to the one of the repair lines, and between the one of the repair lines and a second conductive unit coupled to the second pixel circuit of one dummy pixel coupled to the repair line,
wherein the first and second conductive units are electrically connected to the one of the repair lines.

11. The organic light-emitting display device of claim 10 , wherein the first and second conductive units are at a same layer and comprise a same material as gate electrodes of thin film transistors of the first and second pixel circuits, and
wherein the repair line is at a same layer and comprises a same material as source and drain electrodes of the thin film transistor.

12. A method of driving an organic light-emitting display device, the organic light-emitting display device comprising:
a plurality of emission pixels columns and rows, the emission pixels each comprising an emission device and a first pixel circuit coupled to the emission device;
at least one dummy pixel in each column, each dummy pixel comprising a second pixel circuit; and
a plurality of repair lines, each of the repair lines extending along the emission pixels in each column, wherein at least one of the repair lines is electrically coupled to the emission device of one of the emission pixels and to the second pixel circuit of one dummy pixel, in a same column, the method comprising:
sequentially providing data signals to the emission pixels and to the dummy pixel in each column, wherein a same data signal is provided to one of the emission pixels coupled to one of the repair lines and to the dummy pixel coupled to the one of the repair lines; and
simultaneously emitting light from emission devices of the emission pixels according to driving currents corresponding to the data signals.

13. The method of claim 12 , wherein the dummy pixel is at least one of a first row or a last row of its corresponding column.

14. The method of claim 12 , wherein the sequentially providing data signals is before the simultaneously emitting light from emission devices, in a frame.

15. The method of claim 12 , wherein the sequentially providing data signals and the simultaneously emitting light from emission devices partially and temporally overlap.

16. A method of repairing an organic light-emitting display device, the organic light-emitting display device comprising:
a plurality of emission pixels in columns and rows, each of the emission pixels comprising an emission device and a first pixel circuit coupled to the emission device;
at least one dummy pixel in each column, each dummy pixel comprising a second pixel circuit; and
a plurality of repair lines, each of the repair lines extending along the emission pixels in each column, wherein each of the repair lines is configured to be electrically coupled to the emission device of one of the emission pixels and to the second pixel circuit of one dummy pixel in each column, the method comprising:
decoupling the emission device of a first defective pixel of the emission pixels from the first pixel circuit of the first defective pixel;
coupling the emission device of the first defective pixel to the repair line in a same column as the first defective pixel; and
coupling the repair line to the second pixel circuit of a first dummy pixel in the same column as the first defective pixel for enabling the first dummy pixel to receive a data signal that matches the data signal provided to the first defective pixel, for providing a driving current corresponding to the received data signal via the repair line to the emission device of the first defective pixel, and for allowing the first defective pixel to emit light.

17. The method of claim 16 , wherein the coupling the emission device of the first defective pixel to the repair line comprises forming first contact metal on a first conductive unit coupled to an anode of the emission device of the first defective pixel, and
wherein the coupling of the repair line to the second pixel circuit of the first dummy pixel comprises forming second contact metal on a second conductive unit coupled to the second pixel circuit of the first dummy pixel.

18. The method of claim 16 , wherein the coupling the emission device of the first defective pixel to the repair line comprises electrically coupling a first conductive unit, which is coupled to an anode of the emission device of the first defective pixel, to the repair line, which is insulated from the first conductive unit by at least one insulating layer, and
wherein the coupling the repair line to the second pixel circuit of the first dummy pixel comprises electrically coupling a second conductive unit, which is coupled to the second pixel circuit of the first dummy pixel, to the repair line, which insulated from the second conductive unit by at l

Assignees

• Samsung Display Co Ltd

Inventors

• Kang Ki-Nyeng
• Kim Na-Young
• Jo Soo-Beom
• Lee Jae-Ho
• Hur Myung-Koo

Classifications

• G09G3/3241

  the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror · CPC title

• G09G3/3225

  using an active matrix · CPC title

• G09G2230/00

  Details of flat display driving waveforms · CPC title

• G09G3/20 Primary

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · 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