OLED display panel and manufacturing method thereof
An OLED display panel is provided which can control the problem of shedding even in high definition panels. Metal wiring 5 which conducts with an earth line of a flexible printed substrate 15 is provided on a substrate 1 . A display area 2 comprised from a plurality of OLED elements is provided at the center of the substrate 1 and four low resistance metal films 3 are provided along each of four edges of the display area 2 on a surface of insulation films 8, 10 at the periphery of the display area 2 . Among these, one low resistance metal film 3 conducts with the metal wiring 5 via a contact 3 a.
1. A display device comprising:
a substrate on which a display area including a plurality of organic light-emitting elements and a peripheral area surrounding the display area are arranged;
a first wiring in the peripheral area;
a first insulation layer on the first wiring, the first insulation layer including a first opening;
a second wiring on the first insulation layer, the second wiring conducting with the first wiring via the first opening;
a second insulation layer on the second wiring and the first insulation layer, the second insulation layer including a second opening;
a metal wiring on the second insulation layer, the metal wiring conducting with the second wiring via the second opening, running along an exterior edge of the display area, and conducting with a transparent electrode of the plurality of organic light-emitting elements; and
a sealing film overlapping with the plurality of organic light-emitting elements, the metal wiring, and the transparent electrode in a plan view,
wherein the display area, a first edge portion of the metal wiring, a second edge portion of the metal wiring, and an edge portion of the substrate are arranged in this order, and
wherein the transparent electrode covers each of the first and second side edge portions of the metal wiring.
2. The display device according to claim 1 ,
wherein a distance between the display area and the first opening is larger than a distance between the display area and the second opening, and
wherein the transparent electrode is a cathode.
3. The display device according to claim 1 ,
wherein the transparent electrode is arranged on the metal wiring.
4. The display device according to claim 1 , further comprising:
a fill material on the sealing film; and
an opposing substrate on the fill material.
5. The display device according to claim 1 ,
wherein the second opening overlaps with a region between the first edge portion and the second edge portion.
6. The display device according to claim 1 ,
wherein the metal wiring entirely covers the first opening.
7. The display device according to claim 1 ,
wherein the metal wiring, the transparent electrode, and the sealing film are arranged in this order in the second opening.
8. A display device comprising:
a substrate on which a display area including a plurality of organic light-emitting elements and a peripheral area surrounding the display area are arranged;
a first wiring in the peripheral area;
a first insulation layer on the first wiring, the first insulation layer including a first opening;
a second wiring on the first insulation layer, the second wiring conducting with the first wiring via the first opening;
a second insulation layer on the second wiring and the first insulation layer, the second insulation layer including a second opening;
a metal film on the second insulation layer, the metal film including silver or aluminum, conducting with the second wiring via the second opening, running along an exterior edge of the display area, and conducting with a cathode of the plurality of organic emitting elements;
a sealing film overlapping with the plurality of organic light-emitting elements, the metal film, and the cathode in a plan view; and
a flexible printed substrate electrically connected to a terminal in the peripheral area,
wherein a distance between the display area and the terminal is larger than a distance between the metal film and the display area,
wherein the display area, a first edge portion of the metal film, a second edge portion of the metal film, and an edge portion of the substrate are arranged in this order, and
wherein the cathode covers each of the first and second side edge portions of the metal film.
9. The display device according to claim 8 ,
wherein a distance between the display area and the first opening is larger than a distance between the display area and the second opening.
10. The display device according to claim 8 ,
wherein the cathode is arranged on the metal film.
11. The display device according to claim 8 , further comprising:
a fill material on the sealing film; and
an opposing substrate on the fill material.
12. The display device according to claim 8 ,
wherein the second opening overlaps with a region between the first edge portion and the second edge portion.
13. The display device according to claim 8 ,
wherein the metal film entirely covers the first opening.
14. The display device according to claim 8 ,
wherein the metal film, the cathode, and the sealing film are arranged in this order in the second opening.
15. The display device according to claim 11 ,
wherein the second opening runs along the exterior edge of the display area, and
wherein:
an outer area surrounds the peripheral area on the substrate;
a first upper surface of the sealing film overlaps with the outer area;
a second upper surface of the sealing film overlaps with the peripheral area;
a third upper surface of the sealing film overlaps with the display area;
a first distance between the first upper surface and the opposing substrate is larger than a second distance between the second upper surface and the opposing substrate; and
the first distance is larger than a third distance between the third upper surface and the opposing substrate.
16. The display device according to claim 15 ,
wherein:
a circuit layer is arranged below the plurality of organic light-emitting elements;
the second insulation layer separates the plurality of organic light-emitting elements from one another and covers the circuit layer; and
the second insulation layer is not arranged in the outer area on the substrate.
17. The display device according to claim 4 ,
wherein the second opening runs along the exterior edge of the display area, and
wherein:
an outer area surrounds the peripheral area on the substrate;
a first upper surface of the sealing film overlaps with the outer area;
a second upper surface of the sealing film overlaps with the peripheral area;
a third upper surface of the sealing film overlaps with the display area;
a first distance between the first upper surface and the opposing substrate is larger than a second distance between the second upper surface and the opposing substrate; and
the first distance is larger than a third distance between the third upper surface and the opposing substrate.
18. The display device according to claim 17 ,
wherein:
a circuit layer is arranged below the plurality of organic light-emitting elements;
the second insulation layer separates the plurality of organic light-emitting elements from one another and covers the circuit layer; and
the second insulation layer is not arranged in the outer area on the substrate.
19. A display device comprising:
a substrate on which a display area including a plurality of organic light-emitting elements and a peripheral area surrounding the display area are arranged;
a first wiring in the peripheral area;
a first insulation layer on the first wiring, the first insulation layer including a first opening;
a second wiring on the first insulation layer, the second wiring conducting with the first wiring via the first opening;
a second insulation layer on the second wiring and the first insulation layer, the second insulation layer including a second opening;
a metal wiring on the second insulation layer, the metal wiring conducting with the second wiring via the second opening, running along an exterior edge of the display area, and conducting with a transparent electrode of the plurality of organic light-emitting elements;
a sealing film overlapping with the plurality of organic light-emitting elements, the metal wiring, and the transparent electrode in a plan view;
a fill material on the sealing film; and
an opposing substrate on the fill material,
wherein:
an outer area surrounds the peripheral area on the substrate;
a first upper surface of the sealing film overlaps with the outer area;
a second upper surface of the sealing film overlaps with the peripheral area;
a third upper surface of the sealing film overlaps with the display area;
a first distance between the first upper surface and the opposing substrate is larger than a second distance between the second upper surface and the opposing substrate; and
the first distance is larger than a third distance between the third upper surface and the opposing substrate,
wherein the display area, a first edge portion of the metal wiring, a second edge portion of the metal wiring, and an edge portion of the substrate are arranged in this order, and
wherein the transparent electrode covers each of the first and second side edge portions of the metal wiring.
20. The display device according to claim 19 ,
wherein a distance between the display area and the first opening is larger than a distance between the display area and the second opening, and
wherein the transparent electrode is a cathode.
21. The display device according to claim 19 ,
wherein the transparent electrode is arranged on the metal wiring.
22. The display device according to claim 19 ,
wherein the second opening overlaps with a region between the first and the second edge portions.
23. The display device according to claim 19 ,
wherein the metal wiring, the transparent electrode, and the sealing film are arranged in this order in the second opening.
24. A display device comprising:
a substrate on which a display area including a plurality of organic light-emitting elements and a peripheral area surrounding the display area are arranged;
a first wiring in the peripheral area;
a first insulation layer on the first wiring, the first insulation layer including a first opening;
a second wiring on the first insulation layer, the second wiring conducting with the first wiring via the first opening;
a second insulation layer on the second wiring and the first insulation layer, the second insulation layer including a second opening;
a metal film on the second insulation layer, the metal film including silver or aluminum, conducting with the second wiring via the second opening, running along an exterior edge of the display area, and conducting with a cathode of the plurality of organic emitting elements;
a sealing film overlapping with the plurality of organic light-emitting elements, the metal film and the cathode in a plan view;
a fill material on the sealing film;
an opposing substrate on the fill material; and
a flexible printed substrate electrically connected to a terminal in the peripheral area,
wherein:
an outer area surrounds the peripheral area on the substrate;
a first upper surface of the sealing film overlaps with the outer area;
a second upper surface of the sealing film overlaps with the peripheral area;
a third upper surface of the sealing film overlaps with the display area;
a first distance between the first upper surface and the opposing substrate is larger than a second distance between the second upper surface and the opposing substrate;
the first distance is larger than a third distance between the third upper surface and the opposing substrate;
a distance between the display area and the terminal is larger than a distance between the metal film and the display area;
the display area, a first edge portion of the metal film, a second edge portion of the metal film, and an edge portion of the substrate area arranged in this order; and
the cathode covers each of the first and second side edge portions of the metal film.
25. The display device according to claim 24 ,
wherein a distance between the display area and the first opening is larger than a distance between the display area and the second opening.
26. The display device according to claim 24 ,
wherein the cathode is arranged on the metal film.
27. The display device according to claim 24 ,
wherein the second opening overlaps with a region between the first and the second edge portions.
28. The display device according to claim 24 ,
wherein the metal film entirely covers the first opening.
29. The display device according to claim 24 ,
wherein the metal film, the cathode, and the sealing film are arranged in this order in the second opening.