Light emitting semi-conductor diode (with high light output)

US7928466B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Hermann Oppermann · Medway, US
• Julius Muschaweck · Gauting, DE
• Jochen Kunze · Moers, DE
• Thomas Luce · Eßlingen, DE
• Eike Krochmann · Neckartenzlingen, DE
• Walter Tews · Greifswald, DE
• Gundula Roth · Levenhagen, DE

Key dates

• Filing date: Jan 18, 2008
• Grant date: Apr 19, 2011
• Expiry date: Aug 12, 2028

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/8581

Abstract

A light-emitting semi-conductor diode comprising a light emitting chip at least partially surrounded by a transparent electronics protecting body on which a composite layer foil is disposed, the composite layer foil includes at its side facing away from the electronics protection body a carrier layer, which has a refraction index that is greater than the refraction index of the electronics protection body and, at the opposite side, an active layer of the same material of which the electronics protecting body consists.