FR3057135B1 - Circuit optoelectronique comprenant des diodes electroluminescentes - Google Patents

Circuit optoelectronique comprenant des diodes electroluminescentes Download PDF

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Publication number
FR3057135B1
FR3057135B1 FR1659452A FR1659452A FR3057135B1 FR 3057135 B1 FR3057135 B1 FR 3057135B1 FR 1659452 A FR1659452 A FR 1659452A FR 1659452 A FR1659452 A FR 1659452A FR 3057135 B1 FR3057135 B1 FR 3057135B1
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France
Prior art keywords
voltage
circuit
conduction
optoelectronic circuit
circuit including
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.)
Active
Application number
FR1659452A
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English (en)
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FR3057135A1 (fr
Inventor
David Gras
Thomas Peysson
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EASII IC
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EASII IC
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Publication date
Application filed by EASII IC filed Critical EASII IC
Priority to FR1659452A priority Critical patent/FR3057135B1/fr
Priority to EP17193974.7A priority patent/EP3302003B1/fr
Priority to US15/719,612 priority patent/US9974133B2/en
Publication of FR3057135A1 publication Critical patent/FR3057135A1/fr
Application granted granted Critical
Publication of FR3057135B1 publication Critical patent/FR3057135B1/fr
Active legal-status Critical Current
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Classifications

    • 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
    • H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
    • 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

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  • Led Devices (AREA)
  • Amplifiers (AREA)

Abstract

L'invention concerne un circuit optoélectronique (20) destiné à recevoir une tension variable contenant une alternance de phases croissantes et décroissantes. Le circuit optoélectronique comprend des ensembles de diodes électroluminescentes (Di) montés en série, un noeud (A3) relié à chaque ensemble (Di) par un circuit de conduction (SWi) dont la conductance électrique varie en fonction d'un signal de commande (Si) et un circuit de commande (28) relié à chaque circuit de conduction et adapté à fournir chaque signal de commande à partir de la comparaison d'une première tension (VSOURCE) audit noeud à au moins une deuxième tension (VREF). Le circuit de commande comprend un amplificateur de différence (30) et autant d'étages de sortie que de circuits de conduction, le circuit de commande étant adapté à asservir la première tension à la deuxième tension décalée d'une troisième tension, différente pour chaque étage de sortie.
FR1659452A 2016-09-30 2016-09-30 Circuit optoelectronique comprenant des diodes electroluminescentes Active FR3057135B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1659452A FR3057135B1 (fr) 2016-09-30 2016-09-30 Circuit optoelectronique comprenant des diodes electroluminescentes
EP17193974.7A EP3302003B1 (fr) 2016-09-30 2017-09-29 Circuit optoélectronique comprenant des diodes électroluminescentes
US15/719,612 US9974133B2 (en) 2016-09-30 2017-09-29 Optoelectronic circuit comprising light-emitting diodes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1659452A FR3057135B1 (fr) 2016-09-30 2016-09-30 Circuit optoelectronique comprenant des diodes electroluminescentes
FR1659452 2016-09-30

Publications (2)

Publication Number Publication Date
FR3057135A1 FR3057135A1 (fr) 2018-04-06
FR3057135B1 true FR3057135B1 (fr) 2020-11-13

Family

ID=57750154

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1659452A Active FR3057135B1 (fr) 2016-09-30 2016-09-30 Circuit optoelectronique comprenant des diodes electroluminescentes

Country Status (3)

Country Link
US (1) US9974133B2 (fr)
EP (1) EP3302003B1 (fr)
FR (1) FR3057135B1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100986815B1 (ko) * 2010-02-05 2010-10-13 신봉섭 엘이디 정전류 구동장치
CN103249217B (zh) * 2012-02-03 2015-05-06 日亚化学工业株式会社 发光二极管驱动装置

Also Published As

Publication number Publication date
US20180098394A1 (en) 2018-04-05
FR3057135A1 (fr) 2018-04-06
EP3302003B1 (fr) 2019-04-24
US9974133B2 (en) 2018-05-15
EP3302003A1 (fr) 2018-04-04

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