JP2004524704A - 発光ダイオード用電流源装置および電源供給方法 - Google Patents

発光ダイオード用電流源装置および電源供給方法 Download PDF

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Publication number
JP2004524704A
JP2004524704A JP2002578586A JP2002578586A JP2004524704A JP 2004524704 A JP2004524704 A JP 2004524704A JP 2002578586 A JP2002578586 A JP 2002578586A JP 2002578586 A JP2002578586 A JP 2002578586A JP 2004524704 A JP2004524704 A JP 2004524704A
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JP
Japan
Prior art keywords
transistors
transistor
current source
source bias
terminal
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.)
Pending
Application number
JP2002578586A
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English (en)
Japanese (ja)
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JP2004524704A5 (enExample
Inventor
ボルク，カール・リチャード
ムリゼック，アンドリュ・ジェイ
ハーツ，ゲイリイ
Original Assignee
マキシム・インテグレーテッド・プロダクツ・インコーポレーテッド
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Application filed by マキシム・インテグレーテッド・プロダクツ・インコーポレーテッド filed Critical マキシム・インテグレーテッド・プロダクツ・インコーポレーテッド
Publication of JP2004524704A publication Critical patent/JP2004524704A/ja
Publication of JP2004524704A5 publication Critical patent/JP2004524704A5/ja
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/56—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving measures to prevent abnormal temperature of the LEDs
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
    • G05F1/577—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices for plural loads
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is DC
    • G05F3/10—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/26—Current mirrors
    • G05F3/262—Current mirrors using field-effect transistors only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/80—Light emitting diode
JP2002578586A 2001-03-30 2002-03-19 発光ダイオード用電流源装置および電源供給方法 Pending JP2004524704A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/822,620 US6538394B2 (en) 2001-03-30 2001-03-30 Current source methods and apparatus for light emitting diodes
PCT/US2002/008474 WO2002080288A2 (en) 2001-03-30 2002-03-19 Current source methods and apparatus for light emitting diodes

Publications (2)

Publication Number Publication Date
JP2004524704A true JP2004524704A (ja) 2004-08-12
JP2004524704A5 JP2004524704A5 (enExample) 2005-12-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002578586A Pending JP2004524704A (ja) 2001-03-30 2002-03-19 発光ダイオード用電流源装置および電源供給方法

Country Status (3)

Country Link
US (1) US6538394B2 (enExample)
JP (1) JP2004524704A (enExample)
WO (1) WO2002080288A2 (enExample)

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Also Published As

Publication number Publication date
US6538394B2 (en) 2003-03-25
US20020140378A1 (en) 2002-10-03
WO2002080288A2 (en) 2002-10-10
WO2002080288A3 (en) 2002-12-27

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