Organic light emitting display device and repair method thereof

Patent metadata

Field	Value
Publication number	US-10461283-B2
Application number	US-201916297223-A
Country	US
Kind code	B2
Filing date	Mar 8, 2019
Priority date	Dec 29, 2014
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

By forming a repair structure in a horizontal direction and vertical direction by using one or more repair lines between two or more pixels adjacent to each other in a display panel, even though a dark spot appears due to a defective operation of one pixel, the one pixel may be compensated to be driven by using the other pixel.

First claim

What is claimed is:

1. A repair method of an organic light emitting display device including a plurality of pixels, each pixel among the plurality of pixels including an organic light emitting diode (OLED) in every pixel area defined as a plurality of scan lines and a plurality of data lines intersecting with each other, and the organic light emitting display device further including a repair structure in a horizontal direction by one or more repair lines between two or more adjacent pixels among the plurality of pixels, the repair method comprising:
cutting a connection between a driving thin-film transistor (TFT) defective in operation and an anode electrode of an OLED of a first pixel among the two or more adjacent pixels;
repairing a source electrode of an in-defective driving TFT of a second pixel and the anode electrode of the OLED of the first pixel by welding the repair line and the source electrode of the driving TFT of the second pixel adjacent to the first pixel; and
operating the OLED of the first pixel through the in-defective driving TFT of the second pixel,
wherein the repair line extends from the end of the anode electrode of the OLED of the first pixel to overlap the source electrode of the driving TFT of the second pixel, and
wherein the repairing includes welding the repair line and the source electrode of the driving TFT of the second pixel to connect the repair line and the source electrode of the driving TFT of the second pixel.

2. The repair method of claim 1 , wherein the repair line overlaps the driving TFT of the first pixel and the driving TFT of the second pixel below the anode electrodes of the OLEDs of the first pixel and the second pixel, and
the repairing comprises:
welding the anode electrode of the OLED of the first pixel and the repair line to connect the anode electrode of the OLED of the first pixel and the repair line; and
welding the repair line and the source electrode of the driving TFT of the second pixel to connect the repair line and the source electrode of the driving TFT of the second pixel.

3. The repair method of claim 1 , wherein the operating of the OLED of the first pixel comprises adjusting a magnitude of a data voltage applied to the second pixel.

Assignees

• Lg Display Co Ltd

Inventors

• Lee Yoonju
• Kim Jeonghwan
• Choi Soohong
• Shin Hongjae
• Park Kwangmo
• Song Jayeon

Classifications

• G09G3/3283

  in which the data driver supplies a variable data current for setting the current through, or the voltage across, the light-emitting elements · CPC title

• G09G3/003

  to produce spatial visual effects · CPC title

• G09G2330/10

  Dealing with defective pixels · CPC title

• G09G2320/0242

  Compensation of deficiencies in the appearance of colours · CPC title

• G09G3/3291

  in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements · CPC title