Display substrate and method of repairing defects thereof

• US 10,546,883 B2
• Filed: 10/15/2018
• Issued: 01/28/2020
• Est. Priority Date: 04/28/2015
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Hong-Beom, Shin, Ji-Hoon, Shin, Ho-Yong
• Primary Examiner(s): Luu, Chuong A
• Application Number:
  US16/160,140
• Publication Number:
  US 20190051674A1
• Time in Patent Office: 470 Days
• Field of Search: 438286, 438284
• CPC Class Codes: G02F 1/136213 Storage capacitors associated with the pixel electrode
• CPC Class Codes: G02F 1/136259 Repairing; Defects
• CPC Class Codes: G02F 1/136272 Auxiliary lines
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: H01L 27/1225 with semiconductor materials not belonging to the group IV of the periodic table, e.g. InGaZnO
• CPC Class Codes: H01L 27/1244 for preventing breakage, peeling or short circuiting
• CPC Class Codes: H01L 27/1248 with a particular composition or shape of the interlayer dielectric specially adapted to the circuit arrangement
• CPC Class Codes: H01L 27/1255 integrated with passive devices, e.g. auxiliary capacitors

Abstract

A display substrate includes a gate metal pattern including a gate line extending in a first direction, a gate electrode electrically connected to the gate line and a storage line, a data metal pattern including a data line extending in a second direction crossing the first direction, a source electrode electrically connected to the data line and a drain electrode spaced apart from the source electrode, a repair electrode extending in the second direction and overlapping the storage line, an organic layer disposed on the data metal pattern and a pixel electrode disposed on the organic layer and electrically connected to the drain electrode.

Claims

1. A method of repairing a display substrate comprising a gate metal pattern comprising a gate line extending in a first direction, a gate electrode electrically connected to the gate line and a storage line, a data metal pattern comprising a data line extending in a second direction crossing the first direction, a source electrode electrically connected to the data line and a drain electrode spaced apart from the source electrode, a repair electrode extending in the second direction and overlapping the storage line, an organic layer disposed on the data metal pattern and a pixel electrode disposed on the organic layer and electrically connected to the drain electrode,

when a defect of the display substrate is a defect which needs darkening of a defective pixel,

the method comprising:

enforcedly shorting the storage line and the repair electrode.

2. The method of claim 1, wherein the enforcedly shorting the storage line and the repair electrode is performed using a laser beam.

3. The method of claim 2, wherein the repair electrode is disposed on the same layer as the data metal pattern and electrically connected to the drain electrode.

4. The method of claim 3, wherein the storage line comprises:

a protrusion portion protruding along the second direction and overlapping the repair electrode.

5. The method of claim 2, wherein the repair electrode is disposed on the same layer as the pixel electrode and electrically connected to the pixel electrode.

6. The method of claim 5, wherein the storage line comprises:

a protrusion portion protruding along the second direction and overlapping the repair electrode.

7. The method of claim 1, wherein the storage line is parallel with the gate line.

8. A method of repairing a display substrate comprising a gate metal pattern comprising a gate line extending in a first direction, a gate electrode electrically connected to the gate line and a storage line, a data metal pattern comprising a data line extending in a second direction crossing the first direction, a source electrode electrically connected to the data line and a drain electrode spaced apart from the source electrode, a repair electrode extending in the second direction and overlapping the storage line, an organic layer disposed on the data metal pattern and a pixel electrode disposed on the organic layer and electrically connected to the drain electrode,

when a defect of the display substrate is a defect which is caused by non-forming of a contact hole connecting the drain electrode and the pixel electrode,

the method comprising:

enforcedly shorting the drain electrode and the pixel electrode.

9. The method of claim 8, wherein the enforcedly shorting the storage line and the repair electrode is performed using a laser beam.

10. The method of claim 9, wherein the repair electrode is disposed on the same layer as the data metal pattern and electrically connected to the drain electrode.

11. The method of claim 10, wherein the storage line comprises

a protrusion portion protruding along the second direction and overlapping the repair electrode.

12. The method of claim 9, wherein the repair electrode is disposed on the same layer as the pixel electrode and electrically connected to the pixel electrode.

13. The method of claim 12, wherein the storage line comprises:

a protrusion portion protruding along the second direction and overlapping the repair electrode.

14. The method of claim 8, wherein the storage line is parallel with the gate line.