Organic Light Emitting Display Device

• US 20180061918A1
• Filed: 05/23/2017
• Published: 03/01/2018
• Est. Priority Date: 08/31/2016
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: PARK, Jongchan, JANG, ChangJae, KIM, JungChul, HWANG, JaeSik, HAN, Minji
• Granted Patent: US 9,991,462 B2
• Time in Patent Office: Days
• CPC Class Codes: H10K 50/80 Constructional details
• CPC Class Codes: H10K 50/81 Anodes
• CPC Class Codes: H10K 50/814 combined with auxiliary electrodes, e.g. ITO layer combined with metal lines
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 59/1201 Manufacture or treatment
• 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 59/352 the areas of the RGB subpixels being different

Abstract

An organic light emitting display device is provided according to the present disclosure. An organic light emitting display device comprising a first planarization layer configured to planarize an upper portion of a circuit element on a substrate, an inorganic layer comprising a first out-gassing pattern on the first planarization layer, a second planarization layer configured to planarize an upper portion of the inorganic layer and a metal layer comprising a second out-gassing pattern on the second planarization layer.

Claims

1. A display device comprising:

a first planarization layer;

a first layer on the planarization layer and in contact with the planarization layer;

a first outgassing pattern in the first layer, the first outgassing pattern comprising one or more gas discharge holes;

a second planarization layer covering the first layer;

a second layer on the second planarization layer and in contact with the second planarization layer; and

a second outgassing pattern in the second layer, the second outgassing pattern comprising one or more gas discharge holes.

2. The display device of claim 1, wherein the first layer comprises two or more layers including a buffer layer and a protective layer, the gas discharge holes extend through the buffer layer and the protective layer.

3. The display device of claim 1, wherein the second layer is a conductive material.

4. The display device of claim 1, wherein the second layer is in a same layer as a first electrode of an organic light emitting device.

5. The display device of claim 1, further comprising a metal layer on the first planarization layer, wherein the first outgassing pattern does not overlap with the metal layer.

6. The display device of claim 1, wherein the first outgassing pattern does not overlap with any contact holes in the first planarization layer or any contact holes in the second planarization layer.

7. The display device of claim 1, wherein the first outgassing pattern does not overlap with any organic light emitting diode anodes.

8. The display device of claim 1, wherein at least one of the first outgassing pattern and the second outgassing pattern is in an inactive area of the display device.

9. The display device of claim 1, wherein at least one of the first outgassing pattern and the second outgassing pattern is in an active area of the display device.

10. The display device of claim 1, wherein:

the second outgassing pattern does not overlap with the first outgassing pattern.

11. An organic light emitting display device comprising:

a first planarization layer configured to planarize an upper portion of a circuit element on a substrate;

an inorganic layer, having a first out-gassing pattern, on the first planarization layer;

a second planarization layer configured to planarize an upper portion of the inorganic layer; and

a metal layer, having a second out-gassing pattern, on the second planarization layer.

12. The organic light emitting display device of claim 11, wherein the first out-gassing pattern and the second out-gassing pattern are holes or openings provided to exhaust residual gas in the first and second planarization layers.

13. The organic light emitting display device of claim 11, wherein an aperture ratio of the first out-gassing pattern is larger than an aperture ratio of the second out-gassing pattern.

14. The organic light emitting display device of claim 11, wherein the first out-gassing pattern and the second out-gassing pattern are arranged in an inactive area and an active area.

15. The organic light emitting display device of claim 14, wherein the first out-gassing pattern includes at least one opening region extending through the inorganic layer on the first planarization layer.

16. The organic light emitting display device of claim 14, wherein the first out-gassing pattern arranged in the active area does not overlap with the metal layer on the first planarization layer in a horizontal and a vertical direction.

17. The organic light emitting display device of claim 14, wherein the first out-gassing pattern arranged in the active area does not overlap with a contact hole passing through the first planarization layer in a horizontal and a vertical direction.

18. The organic light emitting display device of claim 14, wherein the first out-gassing pattern arranged in the active area does not overlap with a contact hole passing through the second planarization layer in a horizontal and a vertical direction.

19. The organic light emitting display device of claim 11, wherein the inorganic layer on the first planarization layer includes a buffer layer and a passivation layer.

20. The organic light emitting display device of claim 11, wherein the metal layer on the second planarization layer electrically connects an organic light emitting element and a driving circuit.