Back to results
US 7,547,566 B2Granted
Organic electroluminescent device and method of manufacturing the same
AssigneeSeiko Epson Corporation
InventorsRyuji Ishii, Shunichi Seki
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeSeiko Epson Corporation
InventorsRyuji Ishii, Shunichi Seki
Estimating the term…
The invention provides an organic electroluminescent device and a method of manufacturing the same which conveniently reduce or suppress the transfer of ionic impurities into a light-emitting layer, and reduce or prevent the light-emitting property in the light-emitting layer from degrading, which promotes life extension. An organic electroluminescent device includes a functional layer having at least a light-emitting layer between a first electrode and a second electrode. At least a part of the functional layer is formed of the inorganic ion exchange material added to the functional material to form the functional layer.
A method of manufacturing an organic EL device that includes a functional layer having a light-emitting layer and a carrier injection/transport layer between a first electrode and a second electrode, the method comprising:
A method of manufacturing an organic EL device that includes a functional layer having a light-emitting layer and a carrier injection/transport layer between a first electrode and a second electrode, the method comprising:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
OLEDs or polymer light-emitting diodes [PLED]: characterised by the electroluminescent [EL] layers
OLEDs or polymer light-emitting diodes [PLED]: carrier injection layers
Manufacture or treatment specially adapted for the organic devices covered by this subclass: repairing
Organic electric solid-state devices
Term ended 13 Oct 2024 (estimated)
1. Field of Invention
The present invention relates to an organic electroluminescent device and a method of manufacturing the same with an enhanced light-emitting property by selective trapping and fixation of mobile ions.
2. Description of Related Art
FIG. 1 is a sectional side view of significant parts of an organic electroluminescent device according to the present invention;
FIG. 2 is a schematic explaining a method of manufacturing the organic electroluminescent device;
FIGS. 3A-3C are schematics of the processes subsequent to the process shown in FIG. 2;
Exemplary embodiments of the present invention are described in detail below.
FIG. 1 is a sectional side view showing significant parts of an organic electroluminescent device according to a first exemplary embodiment of the present invention. FIG. 1 shows the organic electroluminescent device 1. The organic electroluminescent device 1 has a transparent electrode 3 (a first electrode) and a cathode 4 (a second electrode) on a substrate 2 thereof, and has a functional layer 5 between the transparent electrode 3 and the cathode 4, with the light emitted in the functional layer 5 being emitted from the substrate 2 side, which is referred to as a bottom emission type.
In the substrate 2, driving elements (not shown) composed of TFT elements, or various wiring lines, are formed on a transparent substrate, such as a glass substrate (not shown), and transparent electrodes 3 are formed on the corresponding driving elements or various wiring line via an insulating film or a flattening film.