CA2346042A1 - A method and apparatus for performing wavelength-conversion using phosphors with light emitting diodes - Google Patents

A method and apparatus for performing wavelength-conversion using phosphors with light emitting diodes Download PDF

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Publication number
CA2346042A1
CA2346042A1 CA002346042A CA2346042A CA2346042A1 CA 2346042 A1 CA2346042 A1 CA 2346042A1 CA 002346042 A CA002346042 A CA 002346042A CA 2346042 A CA2346042 A CA 2346042A CA 2346042 A1 CA2346042 A1 CA 2346042A1
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CA
Canada
Prior art keywords
wavelengths
band
phosphor layer
phosphors
refractive index
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002346042A
Other languages
French (fr)
Other versions
CA2346042C (en
Inventor
Dmitri Z. Garbuzov
John C. Connolly
Robert F. Karlicek
Ian T. Ferguson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emcore Corp
Lightscape Materials Inc
Original Assignee
Sarnoff Corporation
Dmitri Z. Garbuzov
John C. Connolly
Robert F. Karlicek
Ian T. Ferguson
Emcore Corporation
Lightscape Materials, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sarnoff Corporation, Dmitri Z. Garbuzov, John C. Connolly, Robert F. Karlicek, Ian T. Ferguson, Emcore Corporation, Lightscape Materials, Inc. filed Critical Sarnoff Corporation
Publication of CA2346042A1 publication Critical patent/CA2346042A1/en
Application granted granted Critical
Publication of CA2346042C publication Critical patent/CA2346042C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements
    • H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
    • H01L33/502—Wavelength conversion materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/02—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
    • H01L33/20—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a particular shape, e.g. curved or truncated substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission
    • H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars
    • H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/02—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
    • H01L33/10—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a light reflecting structure, e.g. semiconductor Bragg reflector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/44—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the coatings, e.g. passivation layer or anti-reflective coating
    • H01L33/46—Reflective coating, e.g. dielectric Bragg reflector

Abstract

An apparatus (100) comprises an active region (120), a phosphor layer (140) and a substrate (130). The active region is configured to emit light having a first band of wavelengths selected from a first group of wavelengths. The phosphor layer has a first refractive index.
The phosphor layer includes a plurality of wavelength-converting phosphors.
The phosphor layer is configured to convert the first band of wavelengths of light emitted from the active region to a second band of wavelengths. A center wavelength of the second band of wavelengths is greater than a center wavelength of the first band of wavelengths. The substrate is disposed between and in contact with the active region and the phosphor layer. The substrate has a second refractive index. The first refractive index substantially equals the second refractive index.
CA002346042A 1998-10-21 1999-10-21 A method and apparatus for performing wavelength-conversion using phosphors with light emitting diodes Expired - Fee Related CA2346042C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US10505698P 1998-10-21 1998-10-21
US60/105,056 1998-10-21
US09/421,584 1999-10-20
US09/421,584 US6404125B1 (en) 1998-10-21 1999-10-20 Method and apparatus for performing wavelength-conversion using phosphors with light emitting diodes
PCT/US1999/024911 WO2000024064A1 (en) 1998-10-21 1999-10-21 A method and apparatus for performing wavelength-conversion using phosphors with light emitting diodes

Publications (2)

Publication Number Publication Date
CA2346042A1 true CA2346042A1 (en) 2000-04-27
CA2346042C CA2346042C (en) 2008-04-01

Family

ID=26802208

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002346042A Expired - Fee Related CA2346042C (en) 1998-10-21 1999-10-21 A method and apparatus for performing wavelength-conversion using phosphors with light emitting diodes

Country Status (9)

Country Link
US (1) US6404125B1 (en)
EP (1) EP1166368A4 (en)
JP (1) JP2002528898A (en)
KR (1) KR100664352B1 (en)
CN (1) CN1324498A (en)
AU (1) AU1132600A (en)
CA (1) CA2346042C (en)
IL (1) IL142394A0 (en)
WO (1) WO2000024064A1 (en)

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Also Published As

Publication number Publication date
KR100664352B1 (en) 2007-01-02
WO2000024064A1 (en) 2000-04-27
CA2346042C (en) 2008-04-01
US6404125B1 (en) 2002-06-11
JP2002528898A (en) 2002-09-03
KR20010080204A (en) 2001-08-22
IL142394A0 (en) 2002-03-10
AU1132600A (en) 2000-05-08
EP1166368A1 (en) 2002-01-02
CN1324498A (en) 2001-11-28
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