Dual panel-type organic electroluminescent device and method for fabricating the same
First Claim
1. A dual panel-type active matrix organic electroluminescent device, comprising:
- first and second substrates spaced apart from each other;
a driving thin film transistor on an inner surface of the first substrate;
a connection electrode layer connected to the driving thin film transistor and formed of a first conductive material having a first hardness;
a first electrode on an inner surface of the second substrate;
an organic electroluminescent layer on the first electrode; and
a second electrode on the organic electroluminescent layer, the second electrode connected to the connection electrode layer and formed of a second conductive material having a second hardness, wherein the first hardness is different from the second hardness.
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Abstract
A dual panel-type active matrix organic electroluminescent device includes: first and second substrates spaced apart from each other; a driving thin film transistor on an inner surface of the first substrate; a connection electrode layer connected to the driving thin film transistor and formed of a first conductive material having a first hardness; a first electrode on an inner surface of the second substrate; an organic electroluminescent layer on the first electrode; and a second electrode on the organic electroluminescent layer, the second electrode connected to the connection electrode layer and formed of a second conductive material having a second hardness, wherein the first hardness is different from the second hardness.
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Citations
59 Claims
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1. A dual panel-type active matrix organic electroluminescent device, comprising:
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first and second substrates spaced apart from each other;
a driving thin film transistor on an inner surface of the first substrate;
a connection electrode layer connected to the driving thin film transistor and formed of a first conductive material having a first hardness;
a first electrode on an inner surface of the second substrate;
an organic electroluminescent layer on the first electrode; and
a second electrode on the organic electroluminescent layer, the second electrode connected to the connection electrode layer and formed of a second conductive material having a second hardness, wherein the first hardness is different from the second hardness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of fabricating a dual panel-type active matrix organic electroluminescent device, comprising:
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forming a driving thin film transistor on a first substrate;
forming a connection electrode layer over the first substrate using a first conductive material, the connection electrode layer contacting the driving thin film transistor and having a first hardness;
forming a first electrode on a second substrate;
forming an organic electroluminescent layer on the first electrode;
forming a second electrode on the organic electroluminescent layer using a second conductive material, the second electrode having a second hardness that is different from the first hardness; and
attaching the first substrate to the second substrate so as to connect the connection electrode layer to the second electrode. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A dual panel-type active matrix organic electroluminescent device, comprising:
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first and second substrates spaced apart from each other;
an array layer on the first substrate, the array layer including a gate line, a data line, a power line, a switching thin film transistor connected to the gate and data lines, and a driving thin film transistor connected to the switching thin film transistor and the power line;
an electrical connector on the array layer, the electrical connector including a connection electrode layer connected to the driving thin film transistor;
light shielding layers on the array layer, the light shielding layers covering the switching and driving thin film transistors, respectively, and including an opaque conductive material; and
an organic electroluminescent diode on a rear surface of the second substrate, the organic electroluminescent diode connected to the electrical connector, wherein the light shielding layers have a first height above the first substrate that is smaller than a second height of the electrical connector above the first substrate and made of a same material as the electrical connector. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method of fabricating a dual panel-type active matrix organic electroluminescent device, comprising:
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forming an array layer on a first substrate, the array layer including a gate line, a data line, a power line, a switching thin film transistor connected to the gate and data lines, and a driving thin film transistor connected to the switching thin film transistor and the power line;
forming an electrical connector on the array layer, the electrical connector including a connection electrode layer connected to the driving thin film transistor;
forming light shielding layers on the array layer, the light shielding layers covering the switching and driving thin film transistors, respectively, and including an opaque conductive material;
forming an organic electroluminescent diode over a second substrate, the organic electroluminescent diode connected to the electrical connector; and
attaching the second substrate having the organic electroluminescent diode to the first substrate having the array layer using a sealant at peripheries of the first and second substrates. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. A method of fabricating a dual panel-type active matrix organic
electroluminescent device, comprising: -
patterning a first metal layer to form a driving gate and a gate line on a first substrate;
forming a first insulating layer on the first substrate to cover the patterned first metal layer;
forming a driving semiconductor layer on the first insulating layer over the driving gate, the driving semiconductor layer including an active layer of undoped amorphous silicon and an ohmic contact layer of doped amorphous silicon;
forming a driving source, a driving drain and a data line, wherein the driving source and drain are disposed on the ohmic contact layer, and the data line is disposed on the first insulating layer and perpendicularly crosses the gate line;
forming a driving channel within the active layer by etching a portion of the ohmic contact exposed between the driving source and drain to form a driving thin film transistor including the driving gate, the driving semiconductor layer, the driving source, and the driving drain;
forming a second insulating layer on the first insulating layer to cover the driving thin film transistor;
forming a power line and a power electrode on the second insulating layer, the power line spaced apart from the data line and perpendicularly crossing the gate line, the power electrode extending from the power line over the driving source to contact the driving source;
forming a third insulating layer on the second insulating layer to cover the power line and electrode;
patterning the third and second insulating layer to form a drain contact hole exposing a portion of the driving drain;
forming a photosensitive organic layer on the patterned second and third insulating layer;
forming a first pattern over the driving thin film transistor and a connection pattern next to the driving drain by exposing and developing the photosensitive organic layer using a mask, wherein the connection pattern has a first height above the first substrate greater than a second height of the first pattern above the first substrate;
forming a second pattern on the first pattern to form a light shielding layer and a connection electrode layer on the connection pattern to form an electrical connector by patterning an opaque conductive material, wherein the connection electrode layer completely covers the connection pattern and contacts the driving drain through the drain contact hole;
forming an organic electroluminescent diode over a second substrate; and
attaching the second substrate having the organic electroluminescent diode to the first substrate having the light shielding layer and the electrical connector so as to connect the connection electrode layer to the organic electroluminescent diode. - View Dependent Claims (56, 57, 58, 59)
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Specification