Patterning method for OLEDs
AssigneeUniversal Display Corporation
InventorsSiddharth Harikrishna Mohan, Paul E. Burrows, Julia J. Brown
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Abstract
Methods of fabricating a device having laterally patterned first and second sub-devices, such as subpixels of an OLED, are provided. Exemplary methods may include depositing via organic vapor jet printing (OVJP) a first organic layer of the first sub-device and a first organic layer of the second sub-device. The first organic layer of the first sub-device and the first organic layer of the second sub-device are both the same type of layer, but have different thicknesses. The type of layer is selected from an ETL, an HTL, an HIL, a spacer and a capping layer.
Claims15
A method of fabricating a device having at least laterally patterned first and second sub-devices, the method comprising:
- depositing via organic vapor jet printing (OVJP) a first organic layer of the first sub-device and a first organic layer of the second sub-device;
- wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device have different thicknesses;
- wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device are both the same type of layer, and wherein the type of layer is selected from an ETL, an HTL, an HIL, a spacer and a capping layer;
- wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device have different material compositions;
- wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device are both HTLs, and wherein a triplet state energy of the first organic layer of the first sub-device is within 0.3 eV of a triplet state energy of the first organic layer of the second sub-device.
A method of fabricating a device having at least laterally patterned first and second sub-devices, the method comprising:
- depositing via organic vapor jet printing (OVJP) a first organic layer of the first sub-device and a first organic layer of the second sub-device;
- wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device have different thicknesses and have different material compositions;
- and
- wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device are both HTLs;
- wherein hole transport property of the first organic layer of the first sub-device is different from the first organic layer of the second sub-device;
- and
- wherein a triplet state energy of the first organic layer of the first sub-device is within 0.3 eV of a triplet state energy of the first organic layer of the second sub-device.
Dependencies are inferred from the claim text.