Organic light emitting diode display device

• US 8,921,848 B2
• Filed: 11/29/2013
• Issued: 12/30/2014
• Est. Priority Date: 12/28/2012
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Kim, Do-Youl
• Primary Examiner(s): GREEN, TELLY D
• Application Number:
  US14/093,175
• Publication Number:
  US 20140183470A1
• Time in Patent Office: 396 Days
• Field of Search: 257/40, 257 79-100
• US Class Current: 257/40
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/8731 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers

Abstract

An organic light emitting diode (OLED) display device including a base substrate having a display area and a non-display area; OLEDs formed in corresponding sub-pixel regions defined by a bank insulating film in the display area of the base substrate; a pad part formed in the non-display area of the base substrate and configured to apply a driving signal to the OLEDs; a plurality of passivation films formed in the display area to cover the OLEDs, the plurality of passivation films including a first inorganic film, an organic film, and a second inorganic film, the plurality of passivation films being sequentially stacked. A region of an edge of the organic film that corresponds to a wire through which the driving signal is applied to the OLEDs from the pad part includes at least one groove formed at an inside area of the organic film.

Claims

1. An organic light emitting diode (OLED) display device comprising:

a base substrate having a display area and a non-display area;

OLEDs formed in corresponding sub-pixel regions defined by a bank insulating film in the display area of the base substrate;

a pad part formed in the non-display area of the base substrate and configured to apply a driving signal to the OLEDs;

a plurality of passivation films formed in the display area to cover the OLEDs,

the plurality of passivation films including a first inorganic film, an organic film, and a second inorganic film, the plurality of passivation films being sequentially stacked; and

an encapsulation substrate formed above the base substrate and the plurality of passivation films, the encapsulation substrate being adhered to the second inorganic film and the base substrate via an adhesive layer,

wherein a region of an edge of the organic film that corresponds to a wire through which the driving signal is applied to the OLEDs from the pad part includes at least one groove formed at an inside area of the organic film.

2. The OLED display device according to claim 1, wherein the at least one groove has a shape selected from among a circle and an oval.

3. The OLED display device according to claim 1, wherein the at least one groove has a shape selected from among a polygon, a square, and a triangle.

4. The OLED display device according to claim 1, wherein an edge of the bank insulating film is disposed within the edge of the organic film.

5. The OLED display device according to claim 4, wherein an outermost portion of the edge of the organic film in which the at least one groove is formed has a distance of approximately 1 μ

m to 500 μ

m from the edge of the bank insulating film.

6. The OLED display device according to claim 1, wherein the second inorganic film is formed so as to completely cover the edge of the organic film.

7. The OLED display device according to claim 1, wherein the organic film has a thickness of approximately 1 μ

m to 20 μ

m.

8. The OLED display device according to claim 1, wherein the first inorganic film is formed directly above the OLEDs, the organic film including the at least one groove is formed directly above the organic film, and the second inorganic film is formed directly above the organic film, and

wherein the at least one groove has a shape selected from among a circle, an oval, a polygon, a square, and a triangle.

9. An organic light emitting diode (OLED) display device comprising:

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

OLEDs formed on the substrate in the display area, and including a first electrode, an organic emission layer (EML) form on the first electrode, a second electrode formed on the EML;

a bank insulating film formed at each side of the OLEDs;

a plurality of passivation films formed on the OLEDs, the plurality of passivation films including a first inorganic film formed on the OLEDs, an organic film formed on the first inorganic film, and a second inorganic film formed on the organic film; and

at least one groove formed in a region of an edge of the organic film corresponding to a plurality of wires through which a driving signal is applied to the OLEDs.

10. The OLED display device according to claim 9, wherein the at least one groove has a shape selected from among a circle and an oval.

11. The OLED display device according to claim 9, wherein the at least one groove has a shape selected from among a polygon, a square, and a triangle.

12. The OLED display device according to claim 9, wherein an edge of the bank insulating film is disposed within the at least one inside edge of the organic film.

13. The OLED display device according to claim 12, wherein an outermost portion of the at least one inside edge of the organic film in which the at least one groove is formed has a distance of approximately 1 μ

m to 500 μ

m from the edge of the bank insulating film.

14. The OLED display device according to claim 9, wherein the second inorganic film is formed so as to completely cover the at least one inside edge of the organic film.

15. The OLED display device according to claim 9, wherein the organic film has a thickness of approximately 1 μ

m to 20 μ

m.

16. The OLED display device according to claim 9, wherein the first inorganic film is formed directly above the plurality of OLEDs, the organic film including the at least one groove is formed directly above the organic film, and the second inorganic film is formed directly above the organic film, and

wherein the at least one groove has a shape selected from among a circle, an oval, a polygon, a square, and a triangle.