Semiconductor light emitting device, method of manufacturing the same, and lighting apparatus and display apparatus using the same

• US 7,683,377 B2
• Filed: 07/12/2004
• Issued: 03/23/2010
• Est. Priority Date: 07/16/2003
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Nagai, Hideo
• Primary Examiner(s): Pham; Long
• Application Number:
  US10/563,268
• Publication Number:
  US 20060151793A1
• Time in Patent Office: 2,080 Days
• Field of Search: 257/79, 257/184
• US Class Current: 257/79
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/73265 Layer and wire connectors
• CPC Class Codes: H01L 23/16 Fillings or auxiliary members in containers or encapsulations, e.g. centering rings H01L23/42, H01L23/552 take precedence
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 27/156 two-dimensional arrays
• 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 33/20 with a particular shape, e.g. curved or truncated substrate

Abstract

The present invention aims to provide a semiconductor light emitting device (1) that may be firmly attached to a substrate with maintaining excellent light emitting efficiency, and a manufacturing method of the same, and a lighting apparatus and a display apparatus using the same. In order to achieve the above object, the semiconductor light emitting device (1) according to the present invention includes a luminous layer (23), a light transmission layer (10) disposed over a main surface of the luminous layer (23), and having depressions (11) on a surface facing away from the luminous layer (23), and a transmission membrane (70) disposed on the light transmission layer (10) so as to follow contours of the depressions, and light from the luminous layer (23) is irradiated so as to pass through the light transmission layer (10) and the transmission membrane (70).

Claims

1. A semiconductor light emitting device having a luminous layer, comprising:

a light transmission layer disposed over a main surface of the luminous layer, and having depressions on a surface facing away from the luminous layer; and

a transmission membrane disposed on the light transmission layer so as to follow contours of the depressions, wherein

light from the luminous layer is irradiated so as to pass through the light transmission layer and the transmission membrane, wherein the transmission membrane contains a luminous substance that is excitable by the light from the luminous layer, the luminous layer is sandwiched between a plurality of layers and is disposed over the light transmission layer,

wherein the light transmission layer is made of a material having a refractive index that is substantially equal to a refractive index of the luminous layer and the material for the light transmission layer is selected from a group of GaN, SiC, and AlN.

2. A semiconductor light emitting device having a luminous layer, comprising:

a light transmission layer disposed over a main surface of the luminous layer, and having depressions on a surface facing away from the luminous layer; and

a transmission membrane disposed on the light transmission layer so as to follow contours of the depressions, wherein

light from the luminous layer is irradiated so as to pass through the light transmission layer and the transmission membrane,

the luminous layer is sandwiched between a plurality of layers and is disposed over the light transmission layer, wherein a refractive index that is substantially equal to a refractive index of the luminous layer, wherein a reflective film is disposed on a surface of the luminous layer facing away from the light transmission layer.

3. A semiconductor light emitting device having a luminous layer, comprising:

a light transmission layer disposed over a main surface of the luminous layer, and having depressions on a surface facing away from the luminous layer; and

a transmission membrane disposed on the light transmission layer so as to follow contours of the depressions, wherein

light from the luminous layer is irradiated so as to pass through the light transmission layer and the transmission membrane, wherein the transmission membrane contains a luminous substance that is excitable by the light from the luminous layer, the luminous layer is sandwiched between a plurality of layers and is disposed over the light transmission layer, wherein a reflective film is disposed on a surface of the luminous layer facing away from the light transmission layer.

4. A semiconductor light emitting device having a luminous layer, comprising:

a light transmission layer disposed over a main surface of the luminous layer, and having depressions on a surface facing away from the luminous layer; and

a transmission membrane disposed on the light transmission layer so as to follow contours of the depressions, wherein

light from the luminous layer is irradiated so as to pass through the light transmission layer and the transmission membrane, and

the luminous layer is sandwiched between a plurality of layers and is disposed over the light transmission layer, wherein light transmission layer is made of a material selected from a group of GaN, SiC, and AlN having a refractive index that is substantially equal to a refractive index of the luminous layer.