Display apparatus and method of repairing the same

• US 8,845,378 B2
• Filed: 06/18/2012
• Issued: 09/30/2014
• Est. Priority Date: 12/27/2011
• 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, June Woo, Choi, Jae Beom, Jung, Kwan Wook, Jin, Guang Hai
• Primary Examiner(s): Pappas, Claire X
• Assistant Examiner(s): Adediran, Abdul-Samad A
• Application Number:
  US13/526,379
• Publication Number:
  US 20130162619A1
• Time in Patent Office: 834 Days
• Field of Search: 345/77, 345/82, 345/83, 345/206, 345/212, 257/71, 257/98, 358/505, 445/2
• US Class Current: 445/2
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2330/02 Details of power systems and of start or stop of display operation
• CPC Class Codes: G09G 2330/08 Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
• CPC Class Codes: G09G 3/006 Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309
• CPC Class Codes: G09G 3/3225 using an active matrix

Abstract

A display apparatus and a method of repairing a display apparatus are disclosed. According to one aspect, the display includes a plurality of unit pixels each including a plurality of sub pixels, scan lines branching off a scan wire in a first direction for each of the plurality of unit pixels and connecting the plurality of sub pixels emitting the same color as that of a neighboring unit pixel, data lines extending in a second direction orthogonal to the first direction and connected to the plurality of sub pixels, a first power supply line extending in the second direction and connected to the plurality of sub pixels, and second power supply lines extending in the first direction and connected to the first power supply line.

Claims

1. A display apparatus comprising:

a plurality of unit pixels each comprising a plurality of sub pixels;

scan lines branching off a scan wire in a first direction for each of the unit pixels, the scan lines being connected to the sub pixels emitting the same color as that of a neighboring unit pixel;

data lines extending in a second direction orthogonal to the first direction, the data lines being connected to the plurality of sub pixels;

a first power supply line extending in the second direction, the first power supply line being connected to the plurality of sub pixels;

a test pad disposed on the scan wire, the test pad being connected to each of the scan lines; and

second power supply lines extending in the first direction, the second power supply lines being connected to the first power supply line and configured to drive the sub pixels when the first power supply line is short-circuited and after disconnecting the first power supply line from each of the sub pixels, wherein the second power supply lines are all connected to the sub pixels of each of the unit pixels.

2. The display apparatus of claim 1, wherein the second power supply lines are disposed between each of the scan lines connected to the plurality of sub pixels of the unit pixels.

3. The display apparatus of claim 1, wherein the sub pixels emit the same color in the first direction, and emit different colors in the second direction.

4. The display apparatus of claim 1, wherein lengths of the data lines are shorter than those of the scan lines.

5. The display apparatus of claim 1, wherein a length of the first power supply line is shorter than those of the scan lines.

6. The display apparatus of claim 1, wherein the data lines are independently connected to the plurality of sub pixels.

7. The display apparatus of claim 1, wherein the first power supply line is disconnected in a region of at least one of the plurality of unit pixels, and wherein the region corresponds to a region in which the scan lines and the first power supply line overlap.

8. The display apparatus of claim 1, wherein each of the plurality of sub pixels comprises a first electrode, a second electrode, and an organic luminescent layer disposed between the first electrode and the second electrode.

9. The display apparatus of claim 8, wherein the first electrode is a transparent electrode, and wherein the second electrode is a reflective electrode.

10. The display apparatus of claim 8, wherein the scan lines, the data lines, the first power supply line, and the second power supply lines do not overlap with the first electrode.

11. The display apparatus of claim 1, wherein each of the plurality of sub pixels comprises at least three thin film transistors (TFTs) and at least two capacitors.

12. The display apparatus of claim 1, further comprising a plurality of compensation control signal lines extending in the second direction and connected to the plurality of sub pixels.