Organic electroluminescence display device and manufacturing method thereof

Abstract

An organic electroluminescence display includes a first substrate with a pixel region formed with an organic electroluminescence element including a first electrode, an organic thin film layer and a second electrode and a non-pixel region formed with a metal wiring for transmitting signals from the exterior to the organic electroluminescence element, a second substrate arranged in a upper side of the first substrate, a frit provided between the first and second substrates, and a first and a second protective films provided as a stacking structure between the metal wiring and the frit, wherein the first substrate and the second substrate are attached to each other through the frit. The metal wirings of the non-pixel region have a first protective film made of a silicon compound formed thereon.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

These and other aspects and advantages of the invention will become apparent and more readily appreciated from the following description of the preferred embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a picture for illustrating damage to a metal wiring by irradiating a laser beam.

FIGS. 2 a, 3a and 4 are plan views of illustrating an organic electroluminescence display device according to a first embodiment of the invention.

FIGS. 2 b and 3b are sectional views for illustrating FIGS. 2a and 3a.

FIGS. 5 a through 5g and FIG. 7 are plan views of illustrating a manufacturing method of an organic electroluminescence display device according to a first embodiment of the invention.

FIGS. 6 a and 6b are plan views for illustrating FIGS. 5a and 5e.

FIGS. 8 a and 8b are an enlarged sectional view and a plan view of region ‘A’ circled in FIG. 7.

FIGS. 9 a, 10a and 11 are plan views of illustrating an organic electroluminescence display device according to a second embodiment of the invention.

FIGS. 9 b and 10b are sectional views for illustrating FIGS. 9a and 10a.

FIGS. 12 a through 12h and FIG. 14 are plan views of illustrating a manufacturing method of an organic electroluminescence display device according to a second embodiment of the invention.

FIGS. 13 a and 13b are plan views for illustrating FIGS. 12a and 12g.

FIGS. 15 a and 15b are enlarged sectional views of region ‘B’ circled in FIG. 14.

FIG. 16 is a schematic exploded view of a passive matrix type organic light emitting display device in accordance with one embodiment.

FIG. 17 is a schematic exploded view of an active matrix type organic light emitting display device in accordance with one embodiment.

FIG. 18 is a schematic top plan view of an organic light emitting display in accordance with one embodiment.

FIG. 19 is a cross-sectional view of the organic light emitting display of FIG. 18, taken along the line 19-19.

FIG. 20 is a schematic perspective view illustrating mass production of organic light emitting devices in accordance with one embodiment.

Claims

1. An organic electroluminescence display device comprising: a first substrate formed with organic electroluminescence elements each comprising a first electrode, an organic thin film layer and a second electrode and metal wiring for transmitting signals to the organic electroluminescence elements,a second substrate arranged in a upper side of the first substrate,a frit provided between the first substrate and the second substrate, anda protective film formed of the first electrode material between the metal wiring and the frit, the protective film being separated from the first electrodes.

2. The organic electroluminescence display device as claimed in claim 1, wherein at least one of the first substrate and the second substrate comprises a transparent material.

3. The organic electroluminescence display device as claimed in claim 1, wherein the metal wiring comprises a scan line, a data line, and a power supply line.

4. The organic electroluminescence display device as claimed in claim 1, wherein the protective film is further formed on the remaining region except for a region formed with the organic electroluminescence element.

5. The organic electroluminescence display device as claimed in claim 1, wherein the first electrode material is one or more selected from a group consisting of ACX, Ag, and Au.

6. The organic electroluminescence display device as claimed in claim 1, wherein the first electrode material is one or more selected from the group consisting of ITO, IZO, and ITZO.

7. The organic electroluminescence display device as claimed in claim 1, wherein the frit comprises at least one dopant made of transition metal.

8. The organic electroluminescence display device as claimed in claim 1, further comprising transistors for controlling the operation of the organic electroluminescence elements.

9. The organic electroluminescence display device as claimed in claim 1, wherein the frit comprises one or more materials selected from the group consisting of magnesium oxide (MgO), calcium oxide (CaO), barium oxide (BaO), lithium oxide (Li2O), sodium oxide (Na2O), potassium oxide (K2O), boron oxide (B2O3), vanadium oxide (V2O5), zinc oxide (ZnO), tellurium oxide (TeO2), aluminum oxide (Al2O3), silicon dioxide (SiO2), lead oxide (PbO), tin oxide (SnO), phosphorous oxide (P2O5), ruthenium oxide (Ru2O), rubidium oxide (Rb2O), rhodium oxide (Rh2O), ferrite oxide (Fe2O3), copper oxide (CuO), titanium oxide (TiO2), tungsten oxide (WO3), bismuth oxide (Bi2O3), antimony oxide (Sb2O3), lead-borate glass, tin-phosphate glass, vanadate glass, and borosilicate.

10. An organic electroluminescence display device comprising: a first substrate defining a pixel region formed with an organic electroluminescence element comprising a first electrode, an organic thin film layer and a second electrode and defining a non-pixel region formed with a metal wiring for transmitting signals from the exterior to the organic electroluminescence element,a second substrate arranged in a upper side of the first substrate,a frit provided between the first substrate and the second substrate, anda first and a second protective films provided as a stacking structure between the metal wiring and the frit, wherein the first substrate and the second substrate are attached to each other through the frit.

11. The organic electroluminescence display device as claimed in claim 10, further comprising a transistor connected to the first electrode, the transistor comprising a source, a drain and a gate.

12. The organic electroluminescence display device as claimed in claim 9, wherein the metal wiring comprises a scan line, a data line, and a power supply line.

13. The organic electroluminescence display device as claimed in claim 10, wherein the first and second protective films are formed on the surface of the non-pixel region.

14. The organic electroluminescence display device as claimed in claim 10, wherein the first protective film is formed as a silicon compound selected from a group consisting of SiOx, SiNx, and SiOxNy.

15. The organic electroluminescence display device as claimed in claim 10, wherein the second protective film is formed of the first electrode material and separated from the first electrode.

16. A manufacturing method of an organic electroluminescence display device comprising: providing a buffer layer on a first substrate to define a pixel region and a non-pixel region,providing a semiconductor layer on the buffer layer of the pixel region and providing a gate insulating film on the upper surface of the non-pixel region,providing a gate electrode and a first metal wiring on the gate insulating film of the pixel region and providing on the gate insulating film of the non-pixel region the first metal wiring extended from the first metal wiring of the pixel region,providing a between-layer insulating film on the upper surface of the pixel region and non-pixel region and providing a contact hole so that a portion of the semiconductor layer is exposed,providing on the between-layer insulating film of the pixel region a source and drain electrodes and a second metal wiring connected through the contact hole to the semiconductor layer and providing on the between-layer insulating film of the non-pixel region the second metal wiring extending from the second metal wiring of the pixel region,providing a flattened layer on the upper surface of the pixel region and providing a via hole so that the source and drain electrodes are exposed,providing an inorganic electrode layer on the upper surface of the pixel region and non-pixel region and patterning the inorganic electrode layer, with a first electrode formed on the pixel region, the first electrode connected through the via hole to the source or drain electrode, and with a protective film provided on the non-pixel region,providing an organic thin film layer and a second electrode on the first electrode,forming a frit along a surrounding of the second substrate, andarranging the second substrate on an upper surface of the first substrate and then attaching the frit to the first substrate.

17. The manufacturing method of an organic electroluminescence display device as claimed in claim 15, wherein the inorganic electrode layer is patterned so that the first electrode is separated from the protective film.

18. The manufacturing method of an organic electroluminescence display device as claimed in claim 15, wherein the inorganic electrode layer is formed of one or more selected from a group consisting of ACX, Ag, and Au.

19. The manufacturing method of an organic electroluminescence display device as claimed in claim 15, wherein the inorganic electrode layer is formed of one or more selected from a group consisting of ITO, IZO, and ITZO.

20. The manufacturing method of an organic electroluminescence display device as claimed in claim 15, wherein the frit is fused and attached to the substrate by at least one of a laser beam and an infrared ray.

21. The manufacturing method of an organic electroluminescence display device as claimed in claim 15, wherein the frit comprises at least one dopant made of transition metal.