Organic light-emitting display apparatus and method of manufacturing the same

• US 9,679,957 B2
• Filed: 03/23/2016
• Issued: 06/13/2017
• Est. Priority Date: 04/14/2015
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kwon, Sunja, Lee, Jieun
• Primary Examiner(s): Kusumakar, Karen
• Application Number:
  US15/078,795
• Publication Number:
  US 20160307990A1
• Time in Patent Office: 447 Days
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52
• 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
• CPC Class Codes: H01L 27/1259 Multistep manufacturing methods
• CPC Class Codes: H10K 50/805 Electrodes
• CPC Class Codes: H10K 59/124 Insulating layers formed between TFT elements and OLED elements
• CPC Class Codes: H10K 59/1315 comprising structures specially adapted for lowering the resistance
• CPC Class Codes: H10K 59/179 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/805 Electrodes

Abstract

An organic light-emitting display apparatus includes a substrate including a display area and a non-display area disposed on one side of the display area, a line unit including a plurality of lines extending in one direction and disposed on the substrate in the non-display area, an insulating film disposed on the line unit and exposing one end of the line unit, and a metal layer disposed between the line unit and the insulating film.

Claims

1. An organic light-emitting display apparatus, comprising:

a substrate comprising a display area and a non-display area;

a line unit comprising a plurality of lines and disposed on the substrate in the non-display area;

an insulating film disposed on the line unit and exposing one end of the line unit; and

a metal layer disposed between the line unit and the insulating film.

2. The organic light-emitting display apparatus of claim 1, wherein the metal layer is disposed on each of the plurality of lines in an island shape.

3. The organic light-emitting display apparatus of claim 1, further comprising:

a first pad unit disposed on the line unit and a second pad unit disposed on the line unit.

4. The organic light-emitting display apparatus of claim 3, wherein the first pad unit is electrically connected to a driving circuit chip, and the second pad unit is electrically connected to a flexible printed circuit board.

5. The organic light-emitting display apparatus of claim 1, wherein the insulating film comprises organic insulating material.

6. The organic light-emitting display apparatus of claim 1, further comprising:

a thin film transistor disposed on the substrate in the display area; and

a pixel electrode electrically connected to the thin film transistor,

wherein the metal layer and the pixel electrode comprise same material.

7. The organic light-emitting display apparatus of claim 6, further comprising:

a pixel-defining layer covering the pixel electrode and exposing a center portion of the pixel electrode,

wherein the insulating film and the pixel-defining layer comprise same material.

8. An organic light-emitting display apparatus, comprising:

a substrate comprising a display area, a non-display area, a pad area formed in a center portion of the non-display area, and a fan-out area disposed in the non-display area, wherein the pad area is disposed between the display area and the fan-out area;

a line unit comprising a plurality of lines disposed on the substrate in the fan-out area;

a first insulating film disposed in a portion of the non-display area that excludes the fan-out area and the pad area; and

a second insulating film disposed on the line unit and exposing one end of the line unit.

9. The organic light-emitting display apparatus of claim 8, further comprising:

a metal layer disposed between the line unit and the second insulating film.

10. The organic light-emitting display apparatus of claim 9, wherein the metal layer is disposed on each of the plurality of lines in an island shape.

11. The organic light-emitting display apparatus of claim 9, further comprising:

a thin film transistor disposed on the substrate in the display area; and

a pixel electrode electrically connected to the thin film transistor,

wherein the metal layer and the pixel electrode comprise same material.

12. The organic light-emitting display apparatus of claim 11, further comprising:

a pixel-defining layer covering the pixel electrode and exposing a center portion of the pixel electrode,

wherein the second insulating film and the pixel-defining layer comprise same material.

13. The organic light-emitting display apparatus of claim 11, further comprising:

a planarization layer disposed between the thin film transistor and the pixel electrode,

wherein the first insulating film and the planarization layer comprise same material.

14. The organic light-emitting display apparatus of claim 11, wherein the thin film transistor comprises a semiconductor layer, a gate electrode, a source electrode, and a drain electrode, and the line unit and the drain electrode or the source electrode comprise same material.

15. The organic light-emitting display apparatus of claim 8, further comprising:

a first pad unit disposed on the one end of the line unit and a second pad unit disposed on another end of the line unit.

16. The organic light-emitting display apparatus of claim 15, wherein the first pad unit is electrically connected to a driving circuit chip, and the second pad unit is electrically connected to a flexible printed circuit board.

17. The organic light-emitting display apparatus of claim 8, wherein the first and second insulating films comprise an organic insulating material.

18. A method of manufacturing an organic light-emitting display apparatus, comprising:

forming a plurality of lines on a substrate in a fan-out area of the substrate, wherein the substrate comprises a display area, a non-display area, the fan-out area disposed in the non-display area, a pad area formed in a center portion of the non-display area and disposed between the display area and the fan-out area, and a surrounding area disposed in a portion of the non-display area that excludes the pad area and the fan-out area;

forming a first insulating film on the substrate in the surrounding area, wherein the plurality of lines formed in the fan-out area is exposed from the first insulating layer;

forming a metal layer on each of the plurality of lines; and

forming a second insulating film on the metal layer, wherein the second insulating film covers the plurality of lines and exposes one end of each of the plurality of lines in the pad area.

19. The method of claim 18, wherein forming the first insulating film comprises:

coating a first insulating material layer on the substrate; and

removing the first insulating material layer formed in the pad area and the fan-out area.

20. The method of claim 18, wherein forming the metal layer comprises:

forming the metal layer on each of the plurality of lines in an island shape.

21. The method of claim 18, wherein forming the second insulating film comprises:

coating a second insulating material layer on the substrate covering the metal layer, the plurality of lines, and the first insulating film; and

removing the second insulating material layer formed in the pad area and the surrounding area.

22. The method of claim 18, further comprising:

forming a thin film transistor in the display area; and

forming a pixel electrode electrically connected to the thin film transistor,

wherein forming the metal layer is performed at substantially a same time as forming the pixel electrode.

23. The method of claim 22, further comprising:

forming a pixel-defining layer covering the pixel electrode and exposing a center portion of the pixel electrode,

wherein forming the second insulating film is performed at substantially a same time as forming the pixel-defining layer.

24. The method of claim 22, further comprising:

forming a planarization layer subsequent to forming the thin film transistor and prior to forming the pixel electrode,

wherein forming the first insulating film is performed at substantially a same time as forming the planarization layer.

25. The method of claim 22, wherein forming the thin film transistor comprises:

forming a semiconductor layer;

forming a gate electrode; and

forming a source electrode and a drain electrode electrically connected to the semiconductor layer,

wherein forming the plurality of lines is performed at substantially a same time as forming the source electrode or the drain electrode.

26. The method of claim 18, further comprising:

connecting the one end of each of the plurality of lines to a driving circuit chip; and

connecting another end of each of the plurality of lines to a flexible printed circuit board.

27. The method of claim 18, wherein the first and second insulating films comprise an organic insulating material.

28. A method of manufacturing an organic light-emitting display apparatus, comprising:

forming a line unit comprising a plurality of lines in a non-display area of a substrate, wherein the substrate comprises a display area and the non-display area;

forming an insulating film on the line unit, wherein the insulating film exposes one end of the line unit; and

forming a metal layer disposed between the line unit and the insulating film.

29. The method of claim 28, further comprising:

forming a thin film transistor on the substrate in the display area; and

forming a pixel electrode electrically connected to the thin film transistor,

wherein the metal layer and the pixel electrode comprise a same material.

30. The method of claim 29, further comprising:

forming a pixel-defining layer, wherein the pixel-defining layer covers an edge of the pixel electrode and exposes a center portion of the pixel electrode,

wherein the insulating film and the pixel-defining layer comprise a same material.