Radiation emitting device

US8159129B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

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

Key dates

• Filing date: Sep 11, 2007
• Grant date: Apr 17, 2012
• Expiry date: Apr 8, 2028

Classification

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

Abstract

The invention relates to a radiation emitting device, with a substrate (100) and a layer sequence disposed on top of it. Said layer sequence comprises a first electrode surface (200) with a first contact (210) for applying a voltage, at least one functional layer (300), which emits radiation during operation, and a second electrode surface (400). 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 varies depending on their distance from the contact.