Light emitting diode device

• US 20050002194A1
• Filed: 03/31/2004
• Published: 01/06/2005
• Est. Priority Date: 03/31/2003
• Status: Active Grant

• Current Assignee: Citizen Electronics Company Limited
• Original Assignee: Citizen Electronics Company Limited
• Inventors: Kikuchi, Satoru, Fukasawa, Koichi
• Granted Patent: US 7,222,993 B2
• Time in Patent Office: Days
• US Class Current: 362/300
• CPC Class Codes: H01L 33/60 Reflective elements

Abstract

An LED is mounted on a circuit substrate, the LED is encapsulated by a transparent resin layer. A reflection layer is provided on the resin layer for reflecting and transmitting lights emitted from the LED.

Claims

1. A light emitting diode device comprising:

a circuit substrate;

an LED mounted on the circuit substrate;

a resin layer encapsulating the LED;

a reflection layer provided on the resin layer for reflecting lights emitted from the LED.

2. The device according to claim 1 further comprising a lower reflection film formed on the upper surface of the circuit substrate.

3. The device according to claim 1 wherein the reflection layer is provided for partly transmitting the lights emitted from the LED.

4. The device according to claim 1 wherein the reflection layer comprises a transparent holding plate and an upper reflection film provided between the upper surface of the resin layer and the underside of the holding plate.

5. The device according to claim 4 wherein the upper reflection film is formed by a metal plating.

6. The device according to claim 4 wherein the upper reflection film has an area smaller than an area of the resin layer.