Organic light-emitting element
The present specification relates to an organic light emitting device.
1. An organic light emitting device comprising:
a first electrode including two or more conductive units and two or more conductive connections connected to each of the two or more conductive units;
a second electrode
a current carrying unit of the first electrode or an auxiliary electrode electrically connecting the two or more conductive connections;
an insulation layer covers the two or more conductive connections and the current carrying unit of the first electrode or the auxiliary electrode; and
one or more organic material layers provided between the first electrode and the second electrode and provided on the two or more conductive units and the insulation layer,
wherein one end portion of the conductive connection is electrically connected to the conductive unit, and the other end portion of the conductive connection is electrically connected to the current carrying unit of the first electrode or the auxiliary electrode, and
wherein each of the two or more conductive connection includes a region in which a length of a current flowing direction is longer than a width of a direction perpendicular thereto, and
in current density of any one value from 1 mA/cm 2 to 5 mA/cm 2 , the conductive connection has a resistance value of both an operating voltage increase rate of the following Equation 1 and a leakage current value with respect to an operating current of the following Equation 2 satisfying 0.03 or less:
V
t
-
V
o
V
o
[
Equation
1
]
I
s
I
t
[
Equation
2
]
wherein the V t (V) is an operating voltage of an organic light emitting device using a conductive connection and without short defects,
the V o (V) is an operating voltage of an organic light emitting device not using a conductive connection and without short defects,
the I t (mA) is an operating current of an organic light emitting device using a conductive connection and without short defects, and
the I s (mA) is a leakage current in an organic light emitting device using a conductive connection and having short defects in any one conductive unit.
2. The organic light emitting device of claim 1 , wherein the conductive connection includes a region in which a ratio of the length and the width is 10:1 or greater.
3. The organic light emitting device of claim 1 , wherein resistance of the conductive connection is greater than or equal to 400Ω and less than or equal to 300,000Ω.
4. The organic light emitting device of claim 1 , wherein the first electrode includes 1,000 or more of the conductive units separated from each other.
5. The organic light emitting device of claim 1 , wherein an area of each of the conductive units is greater than or equal to 0.01 mm 2 and less than or equal to 25 mm 2 .
6. The organic light emitting device of claim 1 , wherein resistance from the one conductive unit to neighboring another conductive unit is twice or greater compared to resistance of the conductive connection.
7. The organic light emitting device of claim 1 , wherein the conductive unit has sheet resistance of 1Ω/□ or greater.
8. The organic light emitting device of claim 1 , wherein the current carrying unit of the first electrode or the auxiliary electrode is provided to be separated from the conductive unit.
9. The organic light emitting device of claim 1 , wherein the auxiliary electrode is separated from each of the conductive units, and is provided as a mesh structure surrounding one or more of the conductive units.
10. The organic light emitting device of claim 1 , wherein the auxiliary electrode includes two or more branch points having 3 or more branches, and resistance between the adjacent branch points is 35Ω or less.
11. The organic light emitting device of claim 1 , wherein the auxiliary electrode has sheet resistance of 3Ω/□ or less.
12. The organic light emitting device of claim 1 , further comprising a short circuit preventing layer provided between the first electrode and the auxiliary electrode.
13. The organic light emitting device of claim 12 , wherein the auxiliary electrode is electrically connected to the conductive connection through the short circuit preventing layer.
14. The organic light emitting device of claim 12 , wherein the short circuit preventing layer is provided on an upper surface, a lower surface, or a side surface of the auxiliary electrode.
15. The organic light emitting device of claim 12 , wherein the short circuit preventing layer includes one, two or more types selected from the group consisting of carbon powder; carbon films; conductive polymers; organic polymers; metals; metal oxides; inorganic oxides; metal sulfides; and insulating materials.
16. The organic light emitting device of claim 1 , wherein an area the conductive units occupy in the organic light emitting device is greater than or equal to 50% and less than or equal to 90% based on a plane diagram of the whole organic light emitting device.
17. The organic light emitting device of claim 1 , which is a flexible organic light emitting device.
18. A display device comprising an organic light emitting device including:
a first electrode including two or more conductive units and two or more conductive connections connected to each of the two or more conductive units;
a second electrode
a current carrying unit of the first electrode or an auxiliary electrode electrically connecting the two or more conductive connections;
an insulation layer covers the two or more conductive connections and the current carrying unit of the first electrode or the auxiliary electrode; and
one or more organic material layers provided between the first electrode and the second electrode and provided on the two or more conductive units and the insulation layer,
wherein one end portion of the conductive connection is electrically connected to the conductive unit, and the other end portion of the conductive connection is electrically connected to the current carrying unit of the first electrode or the auxiliary electrode, and
wherein each of the two or more conductive connection includes a region in which a length of a current flowing direction is longer than a width of a direction perpendicular thereto, and
in current density of any one value from 1 mA/cm 2 to 5 mA/cm 2 , the conductive connection has a resistance value of both an operating voltage increase rate of the following Equation 1 and a leakage current value with respect to an operating current of the following Equation 2 satisfying 0.03 or less:
V
t
-
V
o
V
o
[
Equation
1
]
I
s
I
t
[
Equation
2
]
wherein the V t (V) is an operating voltage of an organic light emitting device using a conductive connection and without short defects,
the V o (V) is an operating voltage of an organic light emitting device not using a conductive connection and without short defects,
the I t (mA) is an operating current of an organic light emitting device using a conductive connection and without short defects, and
the I s (mA) is a leakage current in an organic light emitting device using a conductive connection and having short defects in any one conductive unit.
19. An illumination device comprising an organic light emitting device including:
a first electrode including two or more conductive units and two or more conductive connections connected to each of the two or more conductive units;
a second electrode
a current carrying unit of the first electrode or an auxiliary electrode electrically connecting the two or more conductive connections;
an insulation layer covers the two or more conductive connections and the current carrying unit of the first electrode or the auxiliary electrode; and
one or more organic material layers provided between the first electrode and the second electrode and provided on the two or more conductive units and the insulation layer,
wherein one end portion of the conductive connection is electrically connected to the conductive unit, and the other end portion of the conductive connection is electrically connected to the current carrying unit of the first electrode or the auxiliary electrode, and
wherein each of the two or more conductive connection includes a region in which a length of a current flowing direction is longer than a width of a direction perpendicular thereto, and
in current density of any one value from 1 mA/cm 2 to 5 mA/cm 2 , the conductive connection has a resistance value of both an operating voltage increase rate of the following Equation 1 and a leakage current value with respect to an operating current of the following Equation 2 satisfying 0.03 or less:
V
t
-
V
o
V
o
[
Equation
1
]
I
s
I
t
[
Equation
2
]
wherein the V t (V) is an operating voltage of an organic light emitting device using a conductive connection and without short defects,
the V o (V) is an operating voltage of an organic light emitting device not using a conductive connection and without short defects,
the I t (mA) is an operating current of an organic light emitting device using a conductive connection and without short defects, and
the I s (mA) is a leakage current in an organic light emitting device using a conductive connection and having short defects in any one conductive unit.