Light-emitting device with a wavelength converting layer and method for manufacturing the same

US9048400B2 · kind B2 · utility

Assignee

• PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. · JP

Inventors

• Kenji Sugiura · Yokohama, JP
• Hideo Nagai · Takatsuki, JP
• Tetsushi Tamura · Takatsuki, JP
• Kenji Ueda · Tokyo, JP
• Kazuyuki Okano · Osaka, JP

Key dates

• Filing date: Oct 12, 2007
• Grant date: Jun 2, 2015
• Expiry date: Aug 10, 2028

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/882

Abstract

A light-emitting device (1) includes a base (10), a light-emitting element (11) placed on the base (10), and a wavelength converting layer (12) that covers the light-emitting element (11). The wavelength converting layer (12) includes a wavelength converting portion (13) that converts a wavelength of light from the light-emitting element (11), and a light guide portion (14) made of a light-transmitting material, and the light guide portion (14) extends from a light-emitting element (11) side to a light extraction side of the wavelength converting layer (12). Consequently, it is possible to provide a light-emitting device that can be miniaturized and reduced in thickness easily and can prevent a decrease in the light extraction efficiency.