ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

• US 20180159065A1
• Filed: 11/29/2017
• Published: 06/07/2018
• Est. Priority Date: 12/01/2016
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: KIM, MOOJONG
• Granted Patent: US 10,454,058 B2
• Time in Patent Office: 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 27/1255 integrated with passive devices, e.g. auxiliary capacitors
• CPC Class Codes: H10K 50/805 Electrodes
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• CPC Class Codes: H10K 59/121 characterised by the geometry or disposition of pixel elements
• CPC Class Codes: H10K 59/123 Connection of the pixel electrodes to the thin film transistors [TFT]
• CPC Class Codes: H10K 59/124 Insulating layers formed between TFT elements and OLED elements
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/30 Devices specially adapted for multicolour light emission
• CPC Class Codes: H10K 59/8051 Anodes

Abstract

An organic light emitting diode display device includes a substrate. A first protective layer is disposed on the substrate. A conductive line is disposed on the first protective layer. A second protective layer is disposed on the conductive line. A first electrode is disposed on the second protective layer. An organic light emitting layer is disposed on the first electrode. A second electrode is disposed on the light emitting layer. The first electrode is symmetric with respect to a center of the conductive line.

Claims

1. An organic light emitting diode display device comprising:

a substrate;

a first protective layer disposed on the substrate;

a conductive line disposed on the first protective layer;

a second protective layer disposed on the conductive line;

a first electrode disposed on the second protective layer;

an organic light emitting layer disposed on the first electrode; and

a second electrode disposed on the light emitting layer,

wherein the first electrode is symmetric on a plane with respect to a center of the conductive line.

2. The organic light emitting diode display device as claimed in claim 1, wherein the conductive line is a driving voltage line.

3. The organic light emitting diode display device as claimed in claim 1, wherein the conductive line is substantially straight.

4. The organic light emitting diode display device as claimed in claim 1, wherein the conductive line extends in a radial direction, on a plane, with respect to a center of the first electrode.

5. The organic light emitting diode display device as claimed in claim 4, wherein the conductive line has a lattice shape.

6. The organic light emitting diode display device as claimed in claim 1, further comprising a thin film transistor disposed between the substrate and the first protective layer.

7. The organic light emitting diode display device as claimed in claim 6, wherein the thin film transistor is connected to the first electrode.

8. The organic light emitting diode display device as claimed in claim 6, wherein the thin film transistor is connected to the conductive line.

9. The organic light emitting diode display device as claimed in claim 1, further comprising a pixel defining layer disposed on the second protective layer, the pixel defining layer having an opening that exposes at least a portion of the first electrode.

10. The organic light emitting diode display device as claimed in claim 9, wherein the opening is symmetric, on a plane, with respect to a center of the conductive line.

11. An organic light emitting diode display device comprising:

a substrate;

a first protective layer disposed on the substrate, the first protective layer having a recess disposed therein;

a conductive line disposed within the recess of the first protective layer;

a second protective layer disposed on the conductive line;

a first electrode disposed on the second protective layer;

an organic light emitting layer disposed on the first electrode; and

a second electrode disposed on the light emitting layer,

wherein the first electrode overlaps the recess of the first protective layer.

12. The organic light emitting diode display device as claimed in claim 11, wherein the conductive line is a driving voltage line.

13. The organic light emitting diode display device as claimed in claim 11, wherein a depth of the recess of the first protective layer is substantially equal to a thickness of the conductive line.

14. The organic light emitting diode display device as claimed in claim 11, wherein a depth of the recess of the first protective layer is different from a thickness of the conductive line.

15. The organic light emitting diode display device as claimed in claim 11, wherein the conductive line is substantially straight.

16. The organic light emitting diode display device as claimed in claim 11, wherein the conductive line extends in a radial direction, on a plane, with respect to a center of the first electrode.

17. The organic light emitting diode display device as claimed in claim 16, wherein the conductive line has a lattice shape.

18. The organic light emitting diode display device as claimed in claim 11, further comprising a thin film transistor disposed between the substrate and the first protective layer.

19. The organic light emitting diode display device as claimed in claim 18, wherein the thin film transistor is connected to the first electrode.

20. The organic light emitting diode display device as claimed in claim 18, wherein the thin film transistor is connected to the conductive line.

21. A method of manufacturing an organic light emitting diode display device, the method comprising:

forming a photosensitive material layer on a substrate by applying a photosensitive material onto the substrate;

forming a first protective layer on the substrate by patterning the photosensitive material layer, the first protective layer having a recess and a contact hole therein;

forming a conductive line within the recess of the first protective layer;

forming a second protective layer on the conductive line;

forming a first electrode on the second protective layer;

forming a light emitting layer on the first electrode; and

forming a second electrode on the light emitting layer,

wherein the first electrode overlaps the recess of the first protective layer.

22. The method as claimed in claim 21, wherein forming of the first protective layer comprises exposing the photosensitive material layer with light through a pattern mask.