Flexible electroluminescent devices
AssigneeShoei Chemical Inc.
InventorsDonald A. Zehnder, Dylan C. Hamilton, Ruiqing Ma, Jesse R. Manders
Life of this patent
Estimating the term…
Abstract
Embodiments of a flexible electroluminescent (EL) device are described. An EL device includes a device stack and a flexible substrate configured to support the device stack. The device stack can include a anode and a cathode, a quantum dot (QD) film positioned between the anode and the cathode and configured to produce light having a first peak wavelength. The device stack further includes a patterned insulating layer disposed on the anode and configured to form electrically active regions in the device stack and to control emission of the light from the EL device through the electrically active regions. The EL device further includes an encapsulation layer disposed on the cathode.
Claims19
A method of fabricating an electroluminescent (EL) device, the method comprising:
- forming a patterned insulating layer on an anode layer of a flexible substrate, including:
- depositing an insulating film using spin coating, inkjet printing, slot die coating, nozzle printing, or contact printing on the anode layer;
- and
- patterning the insulating film on the anode layer using an inkjet-printed mask in a lithography process;
- forming a quantum dot (QD) film on the patterned insulating layer;
- forming a cathode layer on the QD film;
- and
- forming an encapsulation layer on the cathode layer.
A method of fabricating an electroluminescent (EL) device, the method comprising:
- forming a layer of insulating regions and conductive regions on an anode layer of a flexible substrate, including:
- depositing an insulating film using spin coating, inkjet printing, slot die coating, nozzle printing, or contact printing on the anode layer;
- and
- patterning the insulating film on the anode layer using an inkjet-printed mask in a lithography process, wherein the insulating regions and the conductive regions are arranged in an alternating configuration;
- depositing a quantum dot (QD) film on the layer of insulating regions and conductive regions;
- forming a cathode layer on the QD film;
- and
- forming a flexible encapsulation layer on the cathode layer.
A method of fabricating an electroluminescent (EL) device, the method comprising:
- depositing an insulating layer on an anode of a flexible substrate;
- forming openings in the insulating layer;
- depositing a conductive layer on the insulating layer and in the openings;
- forming a quantum dot (QD) film on the conductive layer;
- forming a cathode on the QD film;
- and
- forming an encapsulation layer on the cathode.
Dependencies are inferred from the claim text.