Organic light-emitting display apparatus

Patent metadata

Field	Value
Publication number	US-2015102312-A1
Application number	US-201414445286-A
Country	US
Kind code	A1
Filing date	Jul 29, 2014
Priority date	Oct 16, 2013
Publication date	Apr 16, 2015
Grant date	—

Abstract

A display apparatus includes an array of pixels and dummy pixels. A plurality of first lines are connected to the pixels and the dummy pixels. A plurality of repair lines are connected to the dummy pixels and are selectively connected to the pixels. A plurality of second lines are connected to the pixels. At least one dummy line is connected to the dummy pixels. At least one dummy wiring is connected to the at least one dummy line and is selectively connected to one of the second lines.

First claim

What is claimed is:

1 . An organic light-emitting display apparatus, comprising:
a plurality of pixels arrayed in a first direction and a second direction in an active area; a plurality of dummy pixels arrayed in the second direction in a dummy area; a plurality of first lines which extend in the first direction and are connected to the pixels and the dummy pixels; a plurality of repair lines which extend in the first direction, are connected to the dummy pixels, and are selectively connected to the pixels; a plurality of second lines which extend in the second direction and are connected to the pixels; at least one dummy line which extends in the second direction and is connected to the dummy pixels; and at least one dummy wiring which extends in the first direction, is connected to the at least one dummy line, and is selectively connected to one of the second lines.

2 . The display apparatus as claimed in claim 1 , wherein:
each of the pixels includes a light emitting device and a pixel circuit that is separably connected to the light emitting device, and each of the dummy pixels includes a dummy pixel circuit.

3 . The display apparatus as claimed in claim 2 , wherein:
when at least one of the pixels is defective, a light emitting device of the at least one defective pixel is connected to a corresponding one of the dummy pixels via a corresponding one of the repair lines, and is electrically separated from a pixel circuit of the at least one defective pixel.

4 . The display apparatus as claimed in claim 3 , wherein one of the second lines connected to the at least one defective pixel is connected to the at least one dummy wiring.

5 . The display apparatus as claimed in claim 2 , wherein the pixel circuit includes:
a first transistor to transfer a data signal in response to a scan signal; a capacitor to charge a voltage that corresponds to the data signal; and a second transistor to transfer driving current, that corresponds to the voltage charged in the capacitor, to the light emitting device.

6 . The display apparatus as claimed in claim 5 , wherein:
each of the first lines is a scan line that transfers the scan signal to the pixel circuit, and each of the plurality of second lines is a data line that transfers a corresponding data signal to the pixel circuit.

7 . The display apparatus as claimed in claim 5 , wherein:
each of the first lines is a data line that transfers a corresponding data signal to the pixel circuit, and each of the second lines is a scan line that transfers the scan signal to the pixel circuit.

8 . The display apparatus as claimed in claim 1 , wherein the at least one dummy wiring is in an outer region of the active area and the dummy area.

9 . The display apparatus as claimed in claim 1 , wherein the at least one dummy wiring includes a material with lower resistivity than a material of the first lines and a material of the second lines.

10 . The display apparatus as claimed in claim 1 , further comprising:
a plurality of compensation capacitors connected to respective ones of the second lines.

11 . The display apparatus as claimed in claim 10 , wherein:
when at least one of the pixels is defective, a second line connected to the at least one defective pixel is electrically separated from a corresponding one of the compensation capacitors.

12 . The display apparatus as claimed in claim 10 , wherein the compensation capacitors include a plurality of first electrodes connected to respective ones of the second lines and a plurality of second electrodes that are commonly connected, the second electrodes connected to an external terminal through which an external signal is to be input.

13 . The display apparatus as claimed in claim 1 , wherein:
the dummy area includes a first dummy area and a second dummy area, the active area is between the first and second dummy areas and includes a first active area adjacent the first dummy area and a second active area adjacent the second dummy area, the repair lines include first repair lines connected to respective ones of the dummy pixels in the first dummy area and second repair lines connected to respective ones of the dummy pixels in the second dummy area, the at least one dummy line includes at least one first dummy line connected to the dummy pixels in the first dummy area and at least one second dummy line connected to the dummy pixels in the second dummy area, and the at least one dummy wiring includes at least one first dummy wiring connected to the at least one first dummy line and at least one second dummy wiring connected to the at least one second dummy line.

14 . The display apparatus as claimed in claim 13 , wherein:
when the pixels include a first defective pixel in the first active area, the first defective pixel is connected to a corresponding one of the dummy pixels in the first dummy area via a corresponding first repair line, and a second line connected to the first defective pixel is connected to the at least one first dummy wiring, and wherein the pixels include a second defective pixel in the second active area, the second defective pixel is connected to a corresponding one of the dummy pixels in the second dummy area via a corresponding second repair line, and a second line connected to the second defective pixel is connected to the at least one second dummy wiring.

15 . The display apparatus as claimed in claim 1 , wherein:
the dummy area includes a first sub-dummy area and a second dummy area that are arrayed in the second direction, the at least one dummy line includes a first dummy line to which dummy pixels in the first sub-dummy area are connected and a second dummy line to which dummy pixels in the second sub-dummy area are connected, and the at least one dummy wiring includes a first dummy wiring to which the first dummy line is connected and a second dummy wiring to which the second dummy line is connected.

16 . The display apparatus as claimed in claim 1 , further comprising:
a first driver to drive the plurality of first lines; and a second driver to drive the plurality of second lines.

17 . The display apparatus as claimed in claim 16 , wherein the second driver drives the at least one dummy line via a second line connected to the at least one dummy wiring from among the plurality of second lines.

18 . An organic light-emitting display apparatus, comprising:
a plurality of pixels arrayed in a first direction and a second direction in an active area; a plurality of dummy pixels arrayed in the second direction in a dummy area; a plurality of active lines which extend in the second direction and are connected to the pixels; a plurality of dummy lines which extend in the second direction and are selectively connected to the dummy pixels; and a plurality of dummy wirings which extend in the first direction, and are respectively connected to the dummy lines, and are selectively connected to the second lines.

19 . An organic light-emitting display apparatus, comprising:
an active area including an array of pixels, each of the pixels including a first light emitting device and a first pixel circuit that is separably connected to the first light emitting device; a repaired pixel including a second light emitting device, and a second pixel circuit that is electrically separated from the second light emitting device; a dummy pixel including a dummy pixel circuit connected to the second light emitting device; a first line connected to the second pixel cir

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Jae-Sic
• Kim Ji-Hye
• Kim Dong-Wook
• Kim Tae-Gon

Classifications

• G09G2300/0413

  Details of dummy pixels or dummy lines in flat panels · CPC title

• G09G3/3233 Primary

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

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title

• G09G2330/10

  Dealing with defective pixels · CPC title

• G09G2330/08

  Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared · CPC title