ORGANIC ELECTROLUMINESCENT DEVICE, LIGHTING APPARATUS, AND LIGHTING SYSTEM

• US 20160322594A1
• Filed: 07/08/2016
• Published: 11/03/2016
• Est. Priority Date: 01/08/2014
• Status: Abandoned Application

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: KAKIZOE, Hayato, KATO, Daimotsu, SAWABE, Tomoaki, SUGI, Keiji, AMANO, Akio, ONO, Tomio, ENOMOTO, Shintaro
• Application Number:
  US15/205,455
• Publication Number:
  US 20160322594A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H05B 45/60 Circuit arrangements for operating LEDs comprising organic material, e.g. for operating organic light-emitting diodes [OLED] or polymer light-emitting diodes [PLED]
• CPC Class Codes: H10K 2102/3031 Two-side emission, e.g. transparent OLEDs [TOLED]
• CPC Class Codes: H10K 50/805 Electrodes
• CPC Class Codes: H10K 50/822 characterised by their shape
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

According to an embodiment, an organic electroluminescent device includes a first electrode that is optically transparent and has a first region and a second region; an insulation layer that has insulation parts formed of a translucent insulation material on the first and second regions, the insulation parts arranged per unit of surface area are equal in number between the first and second regions; an organic layer provided on at least the first region of the first electrode via the insulation layer; and a second electrode formed on the organic layer, having conductive parts each of which is light-reflective and openings. Each of the openings overlaps at least two of the insulation parts.

Claims

1. An organic electroluminescent device comprising:

a first electrode that is optically transparent and has a first region and a second region;

an insulation layer that has a plurality of insulation parts formed of a translucent insulation material on the first and second regions, wherein the insulation parts arranged per unit of surface area are equal in number between the first and second regions;

an organic layer provided on at least the first region of the first electrode via the insulation layer; and

a second electrode formed on the organic layer, having a plurality of conductive parts each of which is light-reflective and a plurality of openings, wherein each of the openings overlaps at least two of the insulation parts.

2. The organic electroluminescent device according to claim 1, wherein a ratio of a surface area where the conductive parts of the second electrode overlap the insulation parts relative to a surface area of the conductive parts of the second electrode is 0.1% or more and 50% or less.

3. The organic electroluminescent device according to claim 2, wherein a ratio of a surface area where the conductive parts of the second electrode overlap the insulation parts relative to a surface area of the conductive parts of the second electrode is 1% or more and 20% or less.

4. The organic electroluminescent device according to any one of claim 1, wherein the plurality of conductive parts of the second electrode are arranged with an interval in a first direction, and extend in a second direction intersecting the first direction.

5. The organic electroluminescent device according to claim 4, wherein a pitch for arranging the insulation parts in the first direction is smaller than a pitch for arranging the conductive parts of the second electrode.

6. A lighting apparatus comprising:

an organic electroluminescent device according to any one of claim 1; and

a power supply electrically connected to the first electrode and the second electrode.

7. A lighting system comprising:

a plurality of organic electroluminescent devices each corresponding to the organic electroluminescent device according to any one of claim 1; and

a power supply electrically connected to the first electrode and the second electrode of each of the plurality of organic electroluminescent devices.