Method and apparatus for fabricating phosphor-coated LED dies

US9093618B2 · kind B2 · utility

Assignee

• TSMC SOLID STATE LIGHTING LTD. · TW

Inventors

• Chi-Xiang Tseng
• Hsiao-Wen Lee · Hsinchu, TW
• Min-Sheng Wu · Daxi District, TW
• Tien-Min Lin · Chiayi, TW

Key dates

• Filing date: Jun 16, 2014
• Grant date: Jul 28, 2015
• Expiry date: Jun 16, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/853

Abstract

The present disclosure involves lighting apparatus. The lighting apparatus includes a light-emitting device. The light-emitting device includes a first doped semiconductor layer. A light-emitting layer is disposed over the first doped semiconductor layer. A second doped semiconductor layer is disposed over the light-emitting layer. The second doped semiconductor layer has a different type of conductivity than the first doped semiconductor layer. A photo-conversion layer is coated around the light-emitting device. A lens houses the light-emitting device and the photo-conversion layer within. The lens includes a first sub-layer and a second sub-layer. The first and second sub-layers have different characteristics.