Display device and method for manufacturing the same

Abstract

The present invention provides a display device and a method for manufacturing the same, which are thin in thickness but have enhanced sealing properties. [Solution] The device comprises a substrate including a display area and a peripheral area outside the display area; a first pixel electrode and a second pixel electrode arranged separately from each other on the display area of ​​the substrate; a pixel definition film having an opening that exposes the central portions of the first pixel electrode and the second pixel electrode; a spacer disposed on the pixel definition film corresponding to the space between the first pixel electrode and the second pixel electrode; an intermediate layer disposed on the first pixel electrode, the second pixel electrode and the spacer, wherein the thickness of the first portion corresponding to the spacer is thinner than the thickness of the second portion corresponding to the first pixel electrode and the second pixel electrode; a counter electrode disposed on the intermediate layer; and an inorganic sealing layer disposed on the counter electrode, wherein the intermediate layer is provided over the entire surface of the display area.

Claims

1. A first pixel electrode and a second pixel electrode are arranged on a substrate, separated from each other, A pixel definition film having an opening that exposes the central portions of the first pixel electrode and the second pixel electrode, An intermediate layer disposed on the first pixel electrode, the second pixel electrode, and the pixel definition film, having through holes that expose at least a portion of the upper surface of the pixel definition film between the first pixel electrode and the second pixel electrode, A counter electrode is disposed on the intermediate layer opposite to the first pixel electrode and the second pixel electrode, An inorganic sealing layer disposed on the counter electrode, A display device equipped with the following features.

2. The display apparatus according to claim 1, wherein the counter electrode is in direct contact with the upper surface of the pixel definition film through the through-hole.

3. The display apparatus according to claim 1, further comprising a spacer disposed between the pixel definition film and the counter electrode, corresponding to the space between the first pixel electrode and the second pixel electrode.

4. The display device according to claim 3, wherein the intermediate layer is not disposed on the upper surface of the spacer.

5. The display device according to claim 4, wherein the counter electrode is in direct contact with the upper surface of the spacer through the through hole.

6. The display device according to claim 3, wherein the spacer has a retractable portion on which a part of its upper surface is retracted toward the substrate.

7. The display device according to claim 6, wherein the counter electrode is in direct contact with the inner surface of the retraction portion.

8. The display apparatus according to claim 1, wherein the thickness of the inorganic sealing layer is 200 nm to 2 μm.

9. The display apparatus according to claim 8, wherein the inorganic sealing layer has a multilayer structure of at least two layers.

10. The display apparatus according to claim 9, wherein the inorganic sealing layer comprises a first layer and a second layer that are sequentially stacked, and the first layer and the second layer contain the same substance but have different composition ratios.

11. The display apparatus according to claim 10, wherein the thickness of the first layer and the second layer is 50 nm to 500 nm, respectively.

12. The system further comprises an input sensing layer disposed on the inorganic sealing layer, The aforementioned input sensing layer is A planarized organic layer disposed on the inorganic sealing layer, An inorganic insulating layer disposed on the planarized organic layer, The display device according to claim 1, further comprising a sensing electrode on the inorganic insulating layer.

13. The display apparatus according to claim 12, wherein the planarized organic layer is directly interposed between the inorganic sealing layer and the inorganic insulating layer.

14. A first pixel electrode and a second pixel electrode are arranged on a substrate, separated from each other, A pixel definition film having an opening that exposes the central portions of the first pixel electrode and the second pixel electrode, A spacer is disposed on the pixel definition film corresponding to the space between the first pixel electrode and the second pixel electrode, An intermediate layer is disposed on the first pixel electrode, the second pixel electrode, and the spacer, wherein the thickness of the first portion corresponding to the spacer is thinner than the thickness of the second portion corresponding to the first and second pixel electrodes, A counter electrode positioned on the aforementioned intermediate layer, An inorganic sealing layer disposed on the counter electrode, A display device equipped with the following features.

15. The intermediate layer comprises a first light-emitting layer and a second light-emitting layer, which are arranged separately from each other so as to correspond to the first pixel electrode and the second pixel electrode, A first functional layer interposed between the first pixel electrode and the first light-emitting layer, and between the second pixel electrode and the second light-emitting layer, The invention comprises the first light-emitting layer and the second light-emitting layer interposed between the counter electrode, The display device according to claim 14, wherein the thickness of the second functional layer corresponding to the first portion is thinner than the thickness of the second functional layer corresponding to the second portion.

16. The intermediate layer comprises a first light-emitting layer and a second light-emitting layer, which are arranged separately from each other so as to correspond to the first pixel electrode and the second pixel electrode, A first functional layer interposed between the first pixel electrode and the first light-emitting layer, and between the second pixel electrode and the second light-emitting layer, The invention comprises the first light-emitting layer and the second light-emitting layer interposed between the counter electrode, The display device according to claim 14, wherein the thickness of the first functional layer corresponding to the first portion is thinner than the thickness of the first functional layer corresponding to the first portion.

17. The display device according to claim 16, wherein the second functional layer corresponding to the first portion is removed.

18. A pixel circuit layer comprising a thin-film transistor and a planarization layer on the thin-film transistor is formed on a substrate. A pixel electrode is formed on the aforementioned pixel circuit layer, A pixel definition film having an opening that exposes the central portion of the pixel electrode is formed on the pixel electrode. A spacer is formed on the pixel definition film, An intermediate layer is formed over the pixel electrode, the pixel definition film, and the spacer. Remove at least a portion of the intermediate layer formed on the spacer, A counter electrode is formed on the aforementioned intermediate layer, Forming an inorganic sealing layer on the counter electrode, A method for manufacturing a display device, including the method described above.

19. In the formation of the intermediate layer, particles are formed on the spacer, claim 1 A method for manufacturing the display device described in 8.

20. Removing at least a portion of the aforementioned intermediate layer means A method for manufacturing a display device according to claim 19, comprising removing at least a portion of the intermediate layer and simultaneously removing particles formed on the spacer.

21. The method for manufacturing a display device according to claim 20, wherein removing at least a portion of the intermediate layer includes using a laser to remove the particles formed on the spacer.

22. Removing at least a portion of the aforementioned intermediate layer means Covering the substrate so that the surface of the intermediate layer faces vertically, A method for manufacturing a display device according to claim 19, comprising irradiating a laser toward particles formed on the spacer.

23. Removing at least a portion of the aforementioned intermediate layer means A mask having a through portion corresponding to the spacer is placed opposite the intermediate layer, and A method for manufacturing a display device according to claim 22, further comprising irradiating particles formed on the spacer with a laser through the through portion.

24. Removing at least a portion of the aforementioned intermediate layer means The method for manufacturing a display device according to claim 22, further comprising removing at least a portion of the spacer together.

25. The method for manufacturing a display device according to claim 24, wherein the counter electrode is formed to be in direct contact with the upper surface of the spacer.

26. The method for manufacturing a display device according to claim 24, wherein the counter electrode is formed to be in direct contact with the upper surface of the pixel definition film corresponding to the portion where the spacer is formed.

27. The method for manufacturing a display device according to claim 18, wherein the inorganic sealing layer is formed to a thickness of 200 nm to 2 μm.

28. The method for manufacturing a display device according to claim 27, wherein the inorganic sealing layer is formed by a multilayer structure of at least two or more layers.

29. Forming the inorganic sealing layer includes forming a first inorganic layer and forming a second inorganic layer. The method for manufacturing a display apparatus according to claim 27, wherein the first inorganic layer and the second inorganic layer are formed to have different composition ratios by varying the amount of gas injected into the chamber.

30. The method further includes forming an input sensing layer on the inorganic sealing layer, Forming the aforementioned input sensing layer means Forming a planarized layer on the inorganic sealing layer, and A method for manufacturing a display device according to claim 18, comprising forming a touch layer on the planarized organic layer.

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