Organic light emitting display device and repair method thereof

Patent metadata

Field	Value
Publication number	US-2016189593-A1
Application number	US-201514980784-A
Country	US
Kind code	A1
Filing date	Dec 28, 2015
Priority date	Dec 29, 2014
Publication date	Jun 30, 2016
Grant date	—

Abstract

An organic light emitting display device and a method of repairing the device are discussed. According to an embodiment, the device includes a display panel having pixels, each including an OLED in every pixel area defined as scan and data lines intersect with each other and having a repair structure in at least one of horizontal and vertical directions between adjacent pixels by one or more repair lines; a timing controller configured to generate compensation data when a dark spot is generated in one of the plurality of pixels of the display panel, and adjust a magnitude of image data according to the compensation data; and a data driver configured to adjust a magnitude of a data voltage according to the image data adjusted in magnitude, and output the data voltage adjusted in magnitude to the data lines.

First claim

What is claimed is:

1 . An organic light emitting display device comprising:
a display panel configured to include a plurality of pixels, each pixel including an organic light emitting diode (OLED) in every pixel area defined as a plurality of scan lines and a plurality of data lines intersect with each other and having a repair structure in at least one of a horizontal direction and a vertical direction between two or more adjacent pixels among the plurality of pixels by one or more repair lines; a timing controller configured to generate compensation data when a dark spot is generated in one of the plurality of pixels of the display panel, and adjust a magnitude of image data according to the compensation data; and a data driver configured to adjust a magnitude of a data voltage according to the image data adjusted in magnitude, and output the data voltage adjusted in magnitude to the plurality of data lines.

2 . The organic light emitting display device of claim 1 , wherein the adjacent pixels are a first pixel and a second pixel adjacent to each other in the horizontal direction, and the first pixel and the second pixel each include subpixels R, G, B, and W, and
the repair lines are a plurality of horizontal repair lines connecting the subpixels R, G, B, and W of the first pixel and subpixels R, G, B, and W of the second pixel in a corresponding manner.

3 . The organic light emitting display device of claim 2 , wherein the plurality of horizontal repair lines comprise:
a first horizontal repair line connecting each of the subpixel R of the first pixel and the second pixel; a second horizontal repair line connecting each of the subpixel G of the first pixel and the second pixel; a third horizontal repair line connecting each of the subpixel B of the first pixel and the second pixel; and a fourth horizontal repair line connecting each of the subpixel W of the first pixel and the second pixel.

4 . The organic light emitting display device of claim 2 , wherein the plurality of horizontal repair lines extend from an end of an anode electrode of the OLED of the first pixel to overlap a source electrode of a driving thin film transistor (TFT) of the second pixel.

5 . The organic light emitting display device of claim 1 , wherein the adjacent pixels are a first pixel and a second pixel adjacent to each other in the vertical direction, and the first pixel and the second pixel each include subpixels R, G, B, and W, and
the repair lines are a plurality of vertical repair lines connecting the subpixels R, G, B, and W of the first pixel and subpixels R, G, B, and W of the second pixel in a corresponding manner.

6 . The organic light emitting display device of claim 5 , wherein the plurality of vertical repair lines comprise:
a first vertical repair line connecting each of the subpixel R of the first pixel and the second pixel; a second vertical repair line connecting each of the subpixel G of the first pixel and the second pixel; a third vertical repair line connecting each of the subpixel B of the first pixel and the second pixel; and a fourth vertical repair line connecting each of the subpixel W of the first pixel and the second pixel.

7 . The organic light emitting display device of claim 5 , wherein the plurality of vertical repair lines extend from an end of an anode electrode of the OLED of the first pixel to overlap a source electrode of a driving TFT of the second pixel.

8 . The organic light emitting display device of claim 1 , wherein the adjacent pixels are a first pixel, a second pixel and third pixel, wherein the first pixel and second pixel adjacent to each other in the horizontal direction, and the first pixel and the third pixel adjacent to each other in the vertical direction, and the first pixel, the second pixel, and the third pixel each include subpixels R, G, B, and W, and
the repair lines comprise: one horizontal repair line connecting one of subpixels R, G, B, and W of the first pixel and one of subpixels R, G, B, and W of the second pixel corresponding thereto; and a plurality of vertical repair lines connecting the subpixels R, G, B, and W of the first pixel and the subpixels R, G, B, and W of the third pixel in a corresponding manner.

9 . The organic light emitting display device of claim 8 , wherein the one horizontal repair line overlaps a source electrode of a driving TFT of the first pixel and a source electrode of a driving TFT of the second pixel below anode electrodes of the OLEDs of the first pixel and the second pixel.

10 . The organic light emitting display device of claim 8 , wherein the plurality of vertical repair lines extend from the end of the anode electrode of the OLED of the first pixel to overlap a source electrode of the driving TFT of the second pixel.

11 . A repair method of an organic light emitting display device including a plurality of pixels, each pixel including an organic light emitting diode (OLED) in every pixel area and having a repair structure formed between two or more pixels adjacent to each other among the plurality of pixels in at least one of a horizontal direction and a vertical direction by one or more repair lines, the repair method comprising:
cutting a connection between a driving thin film transistor (TFT) of a first pixel defective in operation among the two more pixels, and an anode electrode of an OLED; repairing a source electrode of the driving TFT of the second pixel and the anode electrode of the OLED of the first pixel to weld the repair line and a driving TFT of the second pixel adjacent to the first pixel; and operating the OLED of the first pixel through the driving TFT of the second pixel.

12 . The repair method of claim 11 , 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
the repairing, 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.

13 . The repair method of claim 11 , 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 and the repair line; and welding the repair line and the driving TFT of the second pixel to connect the repair line and the driving TFT.

14 . The repair method of claim 11 , 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

• G09G3/3291

  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

• G09G2320/0242

  Compensation of deficiencies in the appearance of colours · CPC title

• G09G3/2092 Primary

  Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto (suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165) · CPC title

• G09G3/003

  to produce spatial visual effects · CPC title

• G09G2330/08

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