Light emitting device with a layer sequence having electrode surfaces and partial regions

US8749134B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

• Markus Klein · Glückstadt, DE
• Florian Schindler · Traunstein, DE
• Ian Millard · Redwood City, US
• Sok Gek Beh · Bukit Mertajam, MY

Key dates

• Filing date: Mar 20, 2012
• Grant date: Jun 10, 2014
• Expiry date: Mar 20, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L2924/0002

Abstract

A radiation emitting device includes a substrate and a layer sequence disposed on top of the substrate. The layer sequence includes a first electrode surface with a first contact for applying a voltage, at least one functional layer that emits radiation during operation, and a second electrode surface. In the layer sequence, a plurality of partial regions is present that is modified in such a way that the emission of radiation visible to an external observer therefrom is interrupted. The distribution density of these partial regions can vary depending on their distance from the contact.