Organic EL device and method for producing the same
View Patent ↗An organic EL device includes: a first substrate and a second substrate; an organic light emitting portion including a first electrode, an organic layer and a second electrode; a sealing member surrounding the organic light emitting portion; a first electrode extraction portion; a second electrode extraction portion; an insulating layer that electrically insulates the first electrode and the second electrode; and a connecting portion that electrically connects the second electrode extraction portion and the second electrode. The insulating layer includes: a first insulating portion provided between the first electrode extraction portion and the organic layer; and a second insulating portion that is provided between the second electrode extraction portion and the organic layer and covered with the connecting portion. A distance between the sealing member and the first insulating portion is longer than a distance between the sealing member and the second insulating portion.
1. An organic electro-luminescent (EL) device comprising:
a first substrate and a second substrate that are oppositely disposed;
an organic light emitting portion provided between the first substrate and the second substrate, the organic light emitting portion including a first electrode, an organic layer including a light emitting layer, and a second electrode that are stacked in sequence on the first substrate;
a sealing member that connects the first substrate and the second substrate and surrounds the organic light emitting portion;
a first electrode extraction portion that is partly exposed outside the sealing member and is electrically connected to the first electrode;
a second electrode extraction portion that is partly exposed outside the sealing member and is electrically connected to the second electrode;
an insulating layer provided along an edge portion of the organic layer, the insulating layer electrically insulating the first electrode and the second electrode; and
a connecting portion that electrically connects the second electrode extraction portion and the second electrode,
wherein the insulating layer includes:
a first insulating portion provided between the first electrode extraction portion and the organic layer; and
a second insulating portion provided between the second electrode extraction portion and the organic layer, the second insulating portion being covered with the connecting portion, and
a distance between the sealing member and the first insulating portion is longer than a distance between the sealing member and the second insulating portion.
2. The organic EL device according to claim 1 ,
wherein the insulating layer has a frame shape extending along the edge portion of the organic layer, and
the first insulating portion has a line width shorter than a line width of the second insulating portion.
3. The organic EL device according to claim 1 , further comprising a protective film that covers the first insulating portion.
4. The organic EL device according to claim 3 ,
wherein the protective film includes a same material as a material of the second electrode and is electrically insulated from the second electrode.
5. The organic EL device according to claim 4 ,
wherein the protective film is in contact with the first electrode extraction portion.
6. The organic EL device according to claim 1 ,
wherein the second electrode includes a metal material.
7. A method for producing an organic EL device that includes an organic light emitting portion, the organic light emitting portion including a first electrode, an organic layer including a light emitting layer, and a second electrode that are stacked in sequence, the method comprising:
forming, on a first substrate, the first electrode, a first electrode extraction portion electrically connected to the first electrode, and a second electrode extraction portion electrically connected to the second electrode;
forming an insulating layer along an edge portion of the first electrode;
forming the organic layer on the first electrode;
forming the second electrode on the organic layer;
forming a sealing member on at least one of the first substrate and a second substrate so as to surround the organic light emitting portion and cause the first electrode extraction portion and the second electrode extraction portion to be partly exposed outside the sealing member; and
sealing the organic light emitting portion by laminating the first substrate and the second substrate,
wherein the insulating layer includes:
a first insulating portion provided between the first electrode extraction portion and the organic layer; and
a second insulating portion provided between the second electrode extraction portion and the organic layer,
in the forming of the second electrode, a connecting portion that electrically connects the second electrode and the second electrode extraction portion is further formed on the second insulating portion, and
in the forming of the insulating layer, the insulating layer is formed such that a distance between the sealing member and the first insulating portion is longer than a distance between the sealing member and the second insulating portion.
8. The method for producing an organic EL device according to claim 7 ,
wherein in the forming of the second electrode, a protective film that covers the first insulating portion is further formed on the first insulating portion.
9. The method for producing an organic EL device according to claim 8 ,
wherein in the forming of the first electrode, the first electrode extraction portion and the second electrode extraction portion, the first electrode, the first electrode extraction portion and the second electrode extraction portion are formed simultaneously using a same material, and
in the forming of the insulating layer, the second electrode, the connecting portion and the protective film are formed simultaneously using a same material.