LIGHT-EMITTING DEVICE

• Main Authors: URANO YOJI, KAMATA SAKUO, NISHIOKA YASUSHI
• Format: Patent
• Language: English
• Published: 05.04.2007
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

PROBLEM TO BE SOLVED: To provide a light-emitting device for reducing variations in the color of generated light and reducing height by restraining height dimensions. SOLUTION: The light-emitting device includes an LED chip 10; a packaging substrate 20 where the LED chip 10 is packaged; a frame 40 for surrounding the LED chip 10 at the packaging surface side of the packaging substrate 20; a sealing section 50 that is formed by filling a transparent silicon resin to the inside of the frame, seals the LED chip 10 and bonding wires 14, 14, and is elastic; a Fresnel lens 60 arranged while being overlapped to the sealing section 50; and a cylindrical color conversion member 70 that is a molding in which a phosphor excited by light radiated from the LED chip and radiates light with a color differing from the luminescent color of the LED chip is formed with a transparent material, covers the Fresnel lens at the side of a light emission surface 60b of the Fresnel lens 60, and is arranged while an air layer 80 is formed between the light emission surface and the frame 40. COPYRIGHT: (C)2007,JPO&INPIT