# US 2014/0151669 A1 · Light-emitting device and display panel

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- Number: US 2014/0151669 A1
- Document ID: US20140151669A1
- Status: Published application
- Kind: A1
- Application number: 14/107,563
- Filed: 2013-12-16
- Published: 2014-06-05
- Earliest claimed: 2010-11-10
- Assignees: Pioneer Corporation
- Applicants: Pioneer Corporation
- Inventors: Takahito OYAMADA
- Web page: https://patentgrep.com/patent/US20140151669A1

## CPC

- H10K 50/17: Carrier injection layers
- H10K 50/15: Hole transporting layers
- H10K 59/8051: {Anodes}
- H10K 59/878: {comprising reflective means}
- H10K 2101/50: Oxidation-reduction potentials, e.g. excited state redox potentials
- H10K 2102/351: {Thickness}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

Organic semiconductor layers comprise between a first electrode and a photoelectric converting layer a light extraction improving layer that contains at least silver or gold in part as a component, partially reflects light, and has transparency. The light extraction improving layer is in contact with or is inserted into a functional layer containing, for example, an organic semiconductor material, an oxide, a fluoride, or an inorganic compound having strong acceptor properties or strong donor properties with an ionization potential of 5.5 eV or higher, within the organic semiconductor layers.

## Claims

### Claim 1

A panel comprising:
a first electrode;
a second electrode;
an organic layer; and
a light extraction improving layer that includes an oxide between said organic layer and said first electrode, said light extraction improving layer comprising a discontinuous portion.

### Claim 2 (depends on 1)

The panel according to claim 1, wherein:
said light extraction improving layer is in contact with said first electrode.