High resolution organic light-emitting diode devices, displays, and related methods

Patent metadata

Field	Value
Publication number	US-10707273-B2
Application number	US-201816013878-A
Country	US
Kind code	B2
Filing date	Jun 20, 2018
Priority date	Jan 17, 2013
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A method of manufacturing an organic-light emitting diode (OLED) display can include providing on a substrate a first electrode associated with a first sub-pixel and a second electrode associated with a second sub-pixel, wherein a gap is formed between the first electrode and the second electrode and wherein the first electrode and the second electrode are positioned in a well having boundaries defined by a confinement structure on the substrate. The method can also include depositing in the well with the electrodes positioned therein, active OLED material to form a substantially continuous layer of active OLED material that spans the boundaries of the well such that a surface of the layer of active OLED material that faces away from the substrate has a non-planar topography. The depositing can be via inkjet printing.

First claim

What is claimed is:

1. An organic light-emitting diode display, comprising:
a confinement structure provided on a substrate, the confinement structure defining a plurality of wells;
a plurality of electrodes disposed within the plurality of wells;
a first organic light-emissive layer having a first light-emissive wavelength disposed within each of a plurality of first wells of the plurality of wells;
a second organic light-emissive layer having a second light-emissive wavelength disposed within each of a plurality of second wells of the plurality of wells; and
a third organic light-emissive layer having a third light-emissive wavelength disposed within each of a plurality of third wells of the plurality of wells,
wherein a number of electrodes disposed within each of the plurality of first and second wells differs from a number of electrodes disposed within each of the plurality of third wells.

2. The organic light-emitting diode display of claim 1 , wherein the first light-emissive wavelength is associated with red light emission, the second light-emissive wavelength is associated with green light emission, and the third light-emissive wavelength is associated with blue light emission.

3. The organic light-emitting diode display of claim 1 , wherein pixels of the organic light-emitting diode display are defined by a group of electrodes and corresponding light-emissive layers from each of one of the plurality of first wells, one of the plurality of second wells, and one of the plurality of third wells.

4. The organic light-emitting diode display of claim 1 , wherein at least the plurality of first wells and the second wells each contain a plurality of electrodes, each of the plurality of electrodes disposed within the plurality of first wells and the second wells being associated with differing pixels of the organic light-emitting diode display.

5. The organic light-emitting diode display of claim 1 , wherein each of the plurality of electrodes disposed within the plurality of first wells and the plurality of second wells has an active region having a first area, and each of the plurality of electrodes disposed within the plurality of third wells has an active region having a second area, the second area being greater than the first area.

6. The organic light-emitting diode display of claim 1 , wherein:
the first light-emissive wavelength is associated with red light emission,
the second light-emissive wavelength is associated with green light emission,
the third light-emissive wavelength is associated with blue light emission, and each electrode of the plurality of electrodes disposed within a well is associated with a respective subpixel corresponding to one of the red light emission, green light emission, or blue light emission.

7. The organic light-emitting diode display of claim 6 , wherein:
the plurality of wells are arranged in alternating first and second rows,
the first row having the plurality of first wells and second wells alternatingly disposed, and
the second row having the plurality of third wells consecutively disposed.

8. The organic light-emitting diode display of claim 7 , wherein the plurality of third wells are staggered relative to the plurality of first and second wells.

9. The organic light-emitting diode display of claim 7 , wherein:
the plurality of wells of each row of the first and second rows are aligned so as to form columns of wells,
the columns of wells being arranged in alternating first and second columns,
the first column having the plurality of first and third wells alternatingly disposed, and
the second column having the plurality of second and third wells alternatingly disposed.

10. The organic light-emitting diode display of claim 9 , wherein the plurality of wells in each row of the first and second rows are aligned in columns such that each column contains one of the plurality of first wells, the second wells, or the third wells.

11. The organic light-emitting diode display of claim 1 , wherein:
the plurality of wells are arranged in alternating first and second columns,
the first column comprising of the plurality of first wells and third wells alternatingly disposed, and
the second column comprising of the plurality of second wells and third wells alternatingly disposed.

12. The organic light-emitting diode display of claim 11 , wherein the plurality of wells of the first column and the plurality of wells of the second column are in a staggered arrangement relative to each other.

13. The organic light-emitting diode display of claim 1 , wherein the plurality of wells are arranged in rows, each row comprising of plurality of first, second, and third wells disposed in series.

14. The organic light-emitting diode display of claim 1 , wherein:
a number of electrodes disposed in each of the plurality of third wells is half of a number of electrodes disposed in each of the plurality of first wells and the second wells.

15. The organic light-emitting diode display of claim 1 , wherein a plurality of electrodes separated from each other are disposed in each of at least the plurality of first and second wells.

16. The organic light-emitting diode display of claim 1 , wherein each of the first organic light-emissive layer, the second organic light-emissive layer, and the third organic light-emissive layer is a substantially continuous layer that spans and is contained within each well of the plurality of wells, and has a surface facing away from the substrate with a non-planar topography.

17. An organic light-emitting diode display, comprising:
a confinement structure provided on a substrate, the confinement structure defining a plurality of wells, the plurality of wells including a first well, a second well, and a third well;
a first plurality of electrodes disposed in the first well, wherein each electrode in the first well is associated with a differing pixel of the organic light-emitting diode display;
a second plurality of electrodes disposed in the second well, wherein each electrode in the second well is associated with a differing pixel of the organic light-emitting diode display;
a third plurality of electrodes disposed within the third well;
a first organic light-emissive layer having a first light-emissive wavelength disposed in the first well;
a second organic light-emissive layer having a second light-emissive wavelength disposed in the second well; and
a third organic light-emissive layer having a third light-emissive wavelength disposed in the third well,
wherein each of the first plurality of electrodes and the second plurality of electrodes disposed within the first well and the second well has an active region having a first area, and each of the third plurality of electrodes disposed within the third well has an active region having a second area, the second area being greater than the first area.

18. The organic light-emitting diode display of claim 17 , wherein a number of electrodes disposed in each of the first and second wells differs from a number of electrodes disposed in the third well.

19. The organic light-emitting diode display of claim 17 , wherein the third plurality of electrodes are disposed in the third well and each electrode of the third plurality of electrodes in the third well is associated with a differing pixel of the organic light-emitting diode display.

20. The organic light-emitting diode display of claim 17 , wherein the number of electrodes disposed in the third well is half of the number of electrodes di

Assignees

• Kateeva Inc

Inventors

• Madigan Conor F

Classifications

• H10K59/32

  Stacked devices having two or more layers, each emitting at different wavelengths · CPC title

• H10K50/11

  characterised by the electroluminescent [EL] layers · CPC title

• H10K59/805

  Electrodes · CPC title

• H10K59/35 Primary

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

• H10K71/135

  using ink-jet printing · CPC title