OLED display with all organic thin film layers patterned

Patent metadata

Field	Value
Publication number	US-12035596-B2
Application number	US-202218079976-A
Country	US
Kind code	B2
Filing date	Dec 13, 2022
Priority date	Jun 18, 2018
Publication date	Jul 9, 2024
Grant date	Jul 9, 2024

Abstract

Embodiments of the disclosed subject matter provide a device having a substrate, and a plurality of unit areas of an organic light emitting diode (OLED) display disposed on the substrate. The unit areas may be repeating, area-filling subdivisions on the substrate that each have an anode and a cathode. The organic film may be disposed over portions of the device other than the unit areas. The device may include at least one pixel having a plurality of sub-pixels disposed within each of the plurality of unit areas. The cathode of at least one pixel of each of the plurality of unit areas may be a common cathode.

First claim

We claim:

1. A device comprising:
a substrate;
at least two lines disposed on the substrate, wherein
each of the at least two lines includes a segmented emissive layer and at least one continuous organic semiconductor layer for a plurality of pixels creating the corresponding line, wherein
each segment of the segmented emissive layer is provided in a respective pixel of the corresponding line, and wherein
the segmented emissive layer of one of the at least two lines is separated from the segmented emissive layer of another of the at least two lines.

2. The device of claim 1 , wherein each of the at least two lines includes an anode and a cathode.

3. The device of claim 2 , wherein the cathode is addressed by a ground bus line through at least one via.

4. The device of claim 2 , wherein the cathode encloses at least one via.

5. The device of claim 2 , wherein an area between the cathode and substrate that includes at least one via is free of at least the emissive layer.

6. The device of claim 1 , wherein an emissive layer of one of the at least two lines emits a light different from a light of another one of the at least two lines.

7. The device of claim 1 , wherein the at least two lines disposed on the substrate comprise a first line, a second line, and a third line,
wherein the first line includes a red emissive layer, the second line includes a green emissive layer, and the third line includes a blue emissive layer.

8. The device of claim 1 , wherein the emissive layer of at least one of lines comprises at least one selected from a group consisting of: a single emissive layer, and a plurality of overlaid emissive layers.

9. The device of claim 1 , further comprising at least a second emissive layer disposed over the emissive layer of at least one of lines in a stack.

10. The device of claim 9 , wherein the emissive layer and the second emissive layer comprise at least one selected from the group consisting of: different colors of emissive layers, and emissive layers of the same color.

11. The device of claim 9 , wherein the stack comprises one or more interlayers disposed between the emissive layer and the second emissive layer of the stack.

12. The device of claim 11 , wherein the emissive layer, the second emissive layer, and the one or more interlayers comprise at least one selected from the group consisting of: different colors of emissive layers, and emissive layers of the same color.

13. The device of claim 1 , wherein at least a second emissive layer is included to at least one of the lines, wherein the second emissive layer comprises at least one selected from the group consisting of: an orange emissive layer, a yellow emissive layer, a white emissive layer, a blue-green emissive layer, and a violet emissive layer.

14. The device of claim 1 , wherein at least one of the plurality of sub-pixels comprises a plurality of emissive layers disposed in a stack.

15. The device of claim 14 , wherein the stack has polychromatic emission.

Assignees

• Universal Display Corp

Inventors

• Xu Xin
• Mcgraw Gregory
• Quinn William E
• Kottas Gregg
• Paynter Jason
• Brown Julia J

Classifications

• H10K59/1315 Primary

  comprising structures specially adapted for lowering the resistance · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K2102/311

  Flexible OLED · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title

• H10K77/111

  Flexible substrates · CPC title