Light emitting apparatus

• US 20070096114A1
• Filed: 09/27/2006
• Published: 05/03/2007
• Est. Priority Date: 09/27/2005
• Status: Active Grant

• Current Assignee: Nichia Corporation
• Original Assignee: Nichia Corporation
• Inventors: Takahashi, Hiroki, Aoki, Yuko
• Granted Patent: US 7,445,354 B2
• Time in Patent Office: Days
• US Class Current: 257/79
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48227 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 2224/48247 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 2224/48465 the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/01322 Eutectic Alloys, i.e. obtained by a liquid transforming into two solid phases
• CPC Class Codes: H01L 33/20 with a particular shape, e.g. curved or truncated substrate
• CPC Class Codes: H01L 33/486 adapted for surface mounting
• CPC Class Codes: H01L 33/60 Reflective elements
• CPC Class Codes: H01L 33/62 Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A light emitting apparatus which has a high output power and does not experience a decrease in the emission output power is provided. The light emitting apparatus comprises a light emitting element which has one of main surfaces thereof being used as a light emitting surface and a plurality of side faces having different areas, and a support member which has a recess with metallic members provided on the side wall surfaces thereof for reflecting the light emitted by the light emitting element. The light emitting element is placed in the recess so that the distance between the metallic member and a side face having the largest surface area among the plurality of side faces of the light emitting element is larger than the distance between the metallic member and the other side face.

Claims

1. A light emitting apparatus comprising:

a light emitting element having one of main surfaces as a light emitting surface and side faces having different areas;

a supporting member having a recess portion and a metallic member provided on side wall surface of the recess;

wherein the light emitting element is disposed in the recess so that a distance between the side face having a largest area and the metallic member is larger than distances between the other side faces and the metallic member.

2. The light emitting apparatus according to claim 1;

wherein said one main surface has a oblong shape, and the recess has an oblong bottom surface and an oblong opening,

wherein the light emitting element is disposed in the recess so that a longitudinal direction of the light emitting element is perpendicular to a longitudinal direction of the recess.

3. The light emitting apparatus according to claim 1;

wherein the supporting member has protrusions on both sides of the recess in the longitudinal direction for holding a covering member which is disposed in the recess.

4. The light emitting apparatus according to claim 1;

wherein the metallic member is formed on the side wall surface except for at least portion near to the opening.

5. The light emitting apparatus according to claim 1;

wherein a shape of the main surface of the light emitting element is a rectangle.

6. The light emitting apparatus according to claim 1;

wherein the light emitting apparatus has a plurality of the light emitting elements disposed side by side.