Method and apparatus for fabricating phosphor-coated LED dies

US9214610B2 · 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: Dec 15, 2015
• Expiry date: Jun 16, 2034

Classification

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

Abstract

A lighting apparatus includes a first doped semiconductor layer, a light-emitting layer disposed over the first doped semiconductor layer, a second doped semiconductor layer disposed over the light-emitting layer, a first conductive terminal, a second conductive terminal, and a photo-conversion layer. The second doped semiconductor layer has a different type of conductivity than the first doped semiconductor layer. The first conductive terminal and the second conductive terminal each are disposed below the first doped semiconductor layer. The photo-conversion layer is disposed over the second doped semiconductor layer and on side surfaces of the first and second doped semiconductor layers and the light-emitting layer. A bottommost surface of the photo-conversion layer is located closer to the second doped semiconductor layer than bottom surfaces of the first and second conductive terminals.