Patterning method for oleds

Patent metadata

Field	Value
Publication number	US-2015111330-A1
Application number	US-201414581594-A
Country	US
Kind code	A1
Filing date	Dec 23, 2014
Priority date	Aug 31, 2012
Publication date	Apr 23, 2015
Grant date	—

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.

First claim

1 - 27 . (canceled)

28 . 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 have the same material composition; and 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.

29 . The method of claim 28 wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device are deposited at the same time.

30 . The method of claim 28 wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device are deposited at different times.

31 . The method of claim 28 wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device are disposed within optical cavities.

32 . The method of claim 28 wherein the first and second sub-devices are OLEDs.

33 . The method of claim 32 , wherein the first and second sub-devices each emit a different color of light.

34 . The method of claim 32 wherein the device farther includes a third sub-device, and the first, second and third sub-devices each emit a different color of light.

35 . The method of claim 34 wherein the first, second and third devices each emit a different color selected from red, green and blue.

36 . The method of claim 28 wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device are both an ETL.

37 . The method of claim 28 wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device are both an HTL.

38 . The method of claim 28 wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device are both an HIL.

39 . The method of claim 28 wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device are both a spacer.

40 . The method of claim 28 wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device are both a capping layer.

41 . The method of claim 28 wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device have a thickness difference greater than approximately 10 Å.

42 . The method of claim 28 wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device have a thickness difference greater than approximately 20 Å.

43 . The method of claim 28 wherein the first organic layer of the first sub-device and the first organic layer of the second sub-device have a thickness difference in a range of approximately 10 Å-1000 Å.

44 . The method of claim 28 wherein the lateral separation between the first and second sub-devices is at most 1.0 mm.

45 . The method of claim 28 wherein the device is a consumer device.

46 . The method of claim 28 , wherein the device is incorporated into an optoelectronic device.

47 . The method of claim 46 wherein the optoelectronic device is incorporated into one of a vehicle, a computer, a television, a printer, a large area wall, a theater or stadium screen, a billboard, or a sign.

Assignees

• Universal Display Corp

Inventors

• Harikrishna Mohan Siddharth
• Burrows Paul E
• Brown Julia J

Classifications

• H10K59/876

  comprising a resonant cavity structure, e.g. Bragg reflector pair · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K71/135

  using ink-jet printing · CPC title

• H10K59/35 Primary

  comprising red-green-blue [RGB] subpixels · CPC title

• H01L51/5036

  Electricity · mapped topic