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Edge-emitting LED light source

An edge-emitting, LED array technology, applied in the field of edge-emitting LED light sources, can solve problems such as inapplicable applications

Inactive Publication Date: 2007-02-07
AVAGO TECH ECBU IP (SINGAPORE) PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, edge-emitting LEDs are line sources in nature, and because the beams they emit have a very narrow, elongated cross-sectional shape, they are not suitable for many applications

Method used

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Examples

Experimental program
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Embodiment Construction

[0013] Exemplary embodiments according to the present invention provide a side-emitting light emitting diode (LED) light source and a method of manufacturing a side-emitting LED light source.

[0014] figure 1 It is a schematic diagram of an edge-emitting LED known in the art to help explain the embodiments according to the present invention. The edge-emitting LED is generally indicated by the reference numeral 100, and includes a GaN (gallium nitride)-based edge-emitting LED, specifically, an AlGaInN-based edge-emitting LED. In many applications, GaN-based edge-emitting LEDs are superior to traditional surface-emitting LEDs because they can provide very bright blue or green light beams.

[0015] Edge-emitting LED 100 includes sapphire (Al 2 O 3 ) The substrate 102 and the GaN-based epitaxial layer 104. As those skilled in the art know, a lot of light (about 70% of the light) generated by the LED 100 is trapped between the substrate 102 and the epitaxial layer 104, and is direct...

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PUM

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Abstract

Edge-emitting LED light source, and method for fabricating an edge-emitting LED light source. The edge-emitting LED light source has a plurality of edge-emitting LEDs (202, 204, 206, 302, 304, 306, 402, 404, 406) arranged in close proximity to one another to define an array of edge-emitting LEDs (210, 310, 410). Light beams (232, 234, 236) separately emitted by each of the plurality of edge-emitting LEDs in the array together form a single light beam (240, 340, 440, 540) that has a generally two-dimensional cross-sectional shape, for example, a square or other rectangular shape, and an increased overall light flux.

Description

Technical field [0001] The invention relates to an edge-emitting LED light source. Background technique [0002] Traditional light-emitting diodes (LEDs) have insufficient brightness (that is, they cannot produce enough light per unit area and unit angle), and the luminous flux (the ratio of energy flow to time) is not enough to be used in many applications. On the other hand, edge-emitting LEDs can provide a brighter light source. For example, GaN (gallium nitride)-based edge-emitting LEDs, such as AlGaInN-based or InGaN-based edge-emitting LEDs, can provide very bright blue or green light beams. [0003] However, edge-emitting LEDs are essentially linear light sources because the beams they emit have a very narrow and elongated cross-sectional shape, so they are not suitable for many applications. For example, projected onto a spatial light modulator or coupled to an optical fiber. These applications require the light beam emitted by the light source to have a two-dimensional c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/00H01L25/075H05B33/12H01L33/02H01L33/08H01L33/64
CPCH01L33/64H01L33/08H01L2924/0002H01L33/02H01L25/0756H01L25/075H01L2924/00
Inventor 史蒂文·D·莱斯特尔维金奈·M·罗宾斯杰弗里·N·米勒斯科特·W·科尔扎因
Owner AVAGO TECH ECBU IP (SINGAPORE) PTE LTD