ORGANIC ELECTROLUMINESCENCE DEVICE AND METHOD FOR FABRICATING THE SAME
First Claim
Patent Images
1. An organic electroluminescent (EL) device comprising:
- a substrate;
a first electrode, an organic layer and a second electrode provided on the substrate to form a light-emitting region; and
a cap to seal the light-emitting region, the cap having a caved surface between a first boundary point and a second boundary point, a top surface that faces away from the substrate and a bottom surface that faces the substrate, the cap having a thickness in a first direction between the top surface and the bottom surface, the bottom surface defining a second plane in a second direction, the caved surface including a top point that is a furthest point on the caved surface from the substrate, wherein a distance in the first direction from the plane to the top point is at least 10 μ
m, and the distance is 10% or less than the thickness of the cap,wherein a distance in the second direction between the first boundary point of the caved surface and a boundary line of the light-emitting region is at least 70 μ
m.
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Abstract
An organic electroluminescent (EL) device is provided that may include a first electrode, an organic layer and a second electrode arranged in a light-emitting region of a substrate. The device may also include a cap for sealing the light-emitting region of the substrate. The cap may have a caved surface with a minimum depth of 10 μm and a maximum depth of 10% of a total thickness of the cap.
12 Citations
25 Claims
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1. An organic electroluminescent (EL) device comprising:
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a substrate; a first electrode, an organic layer and a second electrode provided on the substrate to form a light-emitting region; and a cap to seal the light-emitting region, the cap having a caved surface between a first boundary point and a second boundary point, a top surface that faces away from the substrate and a bottom surface that faces the substrate, the cap having a thickness in a first direction between the top surface and the bottom surface, the bottom surface defining a second plane in a second direction, the caved surface including a top point that is a furthest point on the caved surface from the substrate, wherein a distance in the first direction from the plane to the top point is at least 10 μ
m, and the distance is 10% or less than the thickness of the cap,wherein a distance in the second direction between the first boundary point of the caved surface and a boundary line of the light-emitting region is at least 70 μ
m. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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2. (canceled)
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10. An organic electroluminescent (EL) device comprising:
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a substrate; a first electrode, an organic layer and a second electrode to form a light-emitting region on the substrate; and a cap to cover the light-emitting region, the cap having a caved surface such that a refractive index of the cap at the caved surface is 1.6 to 2, wherein a distance between a first boundary point of the caved surface of the cap and a boundary line of the light-emitting region is at least 70 μ
m. - View Dependent Claims (11, 12, 14)
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13. (canceled)
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15. An organic electroluminescent (EL) device comprising:
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a substrate; a first electrode, an organic layer and a second electrode provided on the substrate to form a light-emitting region, the light emitting region including a plurality of subpixels; and a cap to seal the light-emitting region, the cap having a thickness in a first direction and having a caved surface that faces the substrate, the caved surface extending into the cap from a first boundary point to a depth in the first direction that is at least 10 μ
m and no more than 10% of a total thickness of the cap,wherein at least one of the plurality of subpixels includes a phosphorescence material. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. An organic electroluminescent (EL) device comprising:
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a substrate; a first electrode, an organic layer and a second electrode provided on the substrate to form a light-emitting region; and a cap to seal the light-emitting region, the cap having a thickness in a first direction and having a caved surface between a first boundary point and a second boundary point provided on a plane extending in a second direction, wherein a distance between the first boundary point of the caved surface of the cap and a boundary line of the light-emitting region is at least 70 μ
m, and wherein an angle between a surface of the cap at the first boundary point and an inclined surface of the caved surface at the first boundary point is 60°
or less. - View Dependent Claims (23, 24, 25)
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Specification