CN111902951A - 发光元件驱动装置 - Google Patents

发光元件驱动装置 Download PDF

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Publication number
CN111902951A
CN111902951A CN201880091696.XA CN201880091696A CN111902951A CN 111902951 A CN111902951 A CN 111902951A CN 201880091696 A CN201880091696 A CN 201880091696A CN 111902951 A CN111902951 A CN 111902951A
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China
Prior art keywords
current
light
emitting element
driving device
voltage
Prior art date
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Granted
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CN201880091696.XA
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English (en)
Chinese (zh)
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CN111902951B (zh
Inventor
中山昌昭
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.)
Rohm Co Ltd
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Rohm Co Ltd
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Publication of CN111902951A publication Critical patent/CN111902951A/zh
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Publication of CN111902951B publication Critical patent/CN111902951B/zh
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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
    • H05B45/48—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]
    • H05B45/30—Driver circuits
    • H05B45/345—Current stabilisation; Maintaining constant current
    • 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]
    • H05B45/30—Driver circuits
    • H05B45/395—Linear regulators
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

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  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)
  • Led Device Packages (AREA)
CN201880091696.XA 2018-03-28 2018-10-25 发光元件驱动装置 Active CN111902951B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2018-061200 2018-03-28
JP2018061200 2018-03-28
PCT/JP2018/039634 WO2019187279A1 (ja) 2018-03-28 2018-10-25 発光素子駆動装置

Publications (2)

Publication Number Publication Date
CN111902951A true CN111902951A (zh) 2020-11-06
CN111902951B CN111902951B (zh) 2024-05-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201880091696.XA Active CN111902951B (zh) 2018-03-28 2018-10-25 发光元件驱动装置

Country Status (4)

Country Link
JP (1) JP7018124B2 (ja)
CN (1) CN111902951B (ja)
DE (1) DE112018007350T5 (ja)
WO (1) WO2019187279A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102192393B1 (ko) * 2019-12-09 2020-12-17 이경연 고효율 및 고신뢰성을 구비한 차량 조명용 led 시스템
WO2022202670A1 (ja) 2021-03-26 2022-09-29 ローム株式会社 発光素子駆動装置、発光装置、および車両

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001325824A (ja) * 2000-05-17 2001-11-22 Kyocera Corp 携帯用端末におけるバックライト用発光ダイオードの駆動回路
JP2010015883A (ja) * 2008-07-04 2010-01-21 Sumida Corporation 点灯回路
JP2011119738A (ja) * 2009-12-02 2011-06-16 Aussmak Optoelectronic Corp 発光装置
JP2014197656A (ja) * 2013-03-04 2014-10-16 シチズンホールディングス株式会社 Ｌｅｄ駆動回路
CN106663724A (zh) * 2014-07-30 2017-05-10 Lg 伊诺特有限公司 发光模块

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63307784A (ja) * 1987-06-09 1988-12-15 Fujitsu Ltd Ｌｅｄ駆動回路

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001325824A (ja) * 2000-05-17 2001-11-22 Kyocera Corp 携帯用端末におけるバックライト用発光ダイオードの駆動回路
JP2010015883A (ja) * 2008-07-04 2010-01-21 Sumida Corporation 点灯回路
JP2011119738A (ja) * 2009-12-02 2011-06-16 Aussmak Optoelectronic Corp 発光装置
JP2014197656A (ja) * 2013-03-04 2014-10-16 シチズンホールディングス株式会社 Ｌｅｄ駆動回路
CN106663724A (zh) * 2014-07-30 2017-05-10 Lg 伊诺特有限公司 发光模块
US20170321863A1 (en) * 2014-07-30 2017-11-09 Lg Innotek Co., Ltd. Light emitting module

Also Published As

Publication number Publication date
JP7018124B2 (ja) 2022-02-09
CN111902951B (zh) 2024-05-10
WO2019187279A1 (ja) 2019-10-03
JPWO2019187279A1 (ja) 2021-02-12
DE112018007350T5 (de) 2020-12-03

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