Light emitting device

US7554129B2 · kind B2 · utility

Assignee

• Seoul Semiconductor Co., Ltd. · KR

Inventors

• Gundula Roth · Levenhagen, DE
• Walter Tews · Greifswald, DE
• Chung Hoon Lee · Ansan-si, KR

Key dates

• Filing date: Dec 30, 2004
• Grant date: Jun 30, 2009
• Expiry date: Dec 30, 2024

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/8512
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A light emitting device can include a substrate, electrodes provided on the substrate, a light emitting diode configured to emit light, the light emitting diode being provided on one of the electrodes, phosphors configured to change a wavelength of the light, and an electrically conductive device configured to connect the light emitting diode with another of the plurality of electrodes. The phosphors can substantially cove at least a portion of the light emitting diode. The phosphor may include aluminate type compounds, lead and/or copper doped silicates, lead and/or copper doped antimonates, lead and/or copper doped germanates, lead and/or copper doped germanate-silicates, lead and/or copper doped phosphates, or any combination thereof.