LIGHT EMITTING DEVICE

• US 20170133348A1
• Filed: 11/04/2016
• Published: 05/11/2017
• Est. Priority Date: 11/05/2015
• Status: Active Grant

• Current Assignee: Koito Manufacturing Company Limited
• Original Assignee: Koito Manufacturing Company Limited
• Inventors: Shido, Masaya, Ito, Toru, Ito, Yoshiro, Magori, Koji
• Granted Patent: US 10,643,972 B2
• Time in Patent Office: Days
• CPC Class Codes: B60Q 1/0058 Stacked, i.e. one lamp located behind the other in the optical axis direction
• CPC Class Codes: B60Q 1/2607 comprising at least two indicating lamps
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/145 Surface emitters, e.g. organic light emitting diodes [OLED]
• CPC Class Codes: F21S 43/31 Optical layout thereof
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/856 comprising reflective means
• CPC Class Codes: H10K 59/221 Static displays, e.g. displaying permanent logos
• CPC Class Codes: H10K 59/86 Series electrical configurations of multiple OLEDs
• CPC Class Codes: H10K 59/90 Assemblies of multiple devices comprising at least one organic light-emitting element

Abstract

The present disclosure relates to a light emitting device using an organic EL. The light emitting device includes an organic EL panel where a plurality of light emitting parts is arranged toward a predetermined direction. The plurality of light emitting parts is configured such that brightness is decreased gradually toward the predetermined direction.

Claims

1. A light emitting device comprising an organic EL panel where a plurality of light emitting parts is arranged toward a predetermined direction, wherein

the plurality of light emitting parts is configured such that brightness is decreased gradually toward the predetermined direction.

2. The light emitting device according to claim 1, wherein

the plurality of light emitting parts is configured such that areas are reduced gradually toward the predetermined direction.

3. The light emitting device according to claim 1, wherein

the organic EL panel has a power supply wiring supply wiring for supplying power to the light emitting parts, and

the plurality of light emitting parts is arranged such that distances from the power supply wiring are increased gradually toward the predetermined direction.

4. The light emitting device according to claim 1, wherein

a non-light emitting part between the pluralities of light emitting parts is configured to allow light to be transmitted therethrough, and

the light emitting device further comprises a reflector disposed at a rear of the organic EL panel.

5. The light emitting device according to claim 1, wherein

the light emitting device comprises a plurality of organic EL panels, and

the plurality of organic EL panels is electrically connected in series.