JP7428500B2 - 発光素子駆動回路 - Google Patents
発光素子駆動回路 Download PDFInfo
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- JP7428500B2 JP7428500B2 JP2019198559A JP2019198559A JP7428500B2 JP 7428500 B2 JP7428500 B2 JP 7428500B2 JP 2019198559 A JP2019198559 A JP 2019198559A JP 2019198559 A JP2019198559 A JP 2019198559A JP 7428500 B2 JP7428500 B2 JP 7428500B2
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- 239000004065 semiconductor Substances 0.000 claims description 64
- 239000000758 substrate Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 89
- 238000010586 diagram Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 9
- 230000010355 oscillation Effects 0.000 description 8
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910000980 Aluminium gallium arsenide Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Classifications
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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
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
-
- 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
- H05B45/32—Pulse-control circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
-
- 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
- H05B45/52—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a parallel array of LEDs
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone
- G01S7/4815—Constructional features, e.g. arrangements of optical elements of transmitters alone using multiple transmitters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/04—Processes or apparatus for excitation, e.g. pumping, e.g. by electron beams
- H01S5/042—Electrical excitation ; Circuits therefor
- H01S5/0428—Electrical excitation ; Circuits therefor for applying pulses to the laser
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Optics & Photonics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Led Devices (AREA)
- Semiconductor Lasers (AREA)
- Electronic Switches (AREA)
Description
図14は、上記実施形態の一変形例に係る駆動回路1Aを示す回路図である。この変形例では、駆動回路2A~2Dのうち一の駆動回路(例えば駆動回路2D)のノードN2が、電流遮断要素8を介することなく直接に(実質的にゼロの抵抗にて)基準電位線11と電気的に接続されている。また、駆動回路2A~2DのノードN2は、互いに短絡することなく電流遮断要素8を介して互いに接続されている。従って、駆動回路2CのノードN2は1つの電流遮断要素8を介して基準電位線11と電気的に接続されており、駆動回路2BのノードN2は2つの電流遮断要素8を介して基準電位線11と電気的に接続されており、駆動回路2AのノードN2は3つの電流遮断要素8を介して基準電位線11と電気的に接続されている。
Claims (7)
- 互いに共通のカソードを有する複数の半導体発光素子をそれぞれパルス駆動する複数の駆動回路を備え、
各駆動回路は、
当該駆動回路が駆動する前記半導体発光素子と並列に接続され、該半導体発光素子の非発光時には該半導体発光素子のカソード側の第1のノードからアノード側の第2のノードへ電流を流し、該半導体発光素子の発光時には電流を制限する電流制御要素と、
一方の電極が前記第1のノードと電気的に接続された第1の蓄電素子と、
制御端子及び一対の電流端子を有し、一方の前記電流端子が前記第1の蓄電素子の他方の電極と電気的に接続され、他方の前記電流端子が前記第2のノードと電気的に接続されたスイッチング素子と、
第1の電流遮断要素と、
を有し、
前記複数の駆動回路の前記第1の蓄電素子の前記他方の電極は互いに共通の第1の定電位線と電気的に接続されており、
前記複数の駆動回路の前記第2のノードは、前記第1の電流遮断要素を介して互いに電気的に接続されて互いに短絡しておらず、前記第1の電流遮断要素を介して、前記第1の定電位線よりも低電位であり互いに共通の第2の定電位線と電気的に接続されており、
前記第1の電流遮断要素は、少なくとも特定周波数もしくは特定期間の電流を遮断または抑制する要素であって、少なくとも前記スイッチング素子がオン状態であるときに電流を遮断もしくは抑制する、発光素子駆動回路。 - 前記複数の駆動回路それぞれは、前記共通の第1の定電位線と前記第1の蓄電素子の前記他方の電極との間に接続された第2の電流遮断要素を更に有し、
前記第2の電流遮断要素は、少なくとも特定周波数もしくは特定期間の電流を遮断または抑制する要素であって、少なくとも前記スイッチング素子がオン状態であるときに電流を遮断もしくは抑制する、請求項1に記載の発光素子駆動回路。 - 前記複数の駆動回路それぞれは、前記第1の蓄電素子の前記他方の電極と前記第2の電流遮断要素との間のノードに一方の電極が接続され、前記第2のノードに他方の電極が接続された第2の蓄電素子を更に有する、請求項2に記載の発光素子駆動回路。
- 前記第2の蓄電素子の容量は前記第1の蓄電素子の容量よりも大きい、請求項3に記載の発光素子駆動回路。
- 前記第1の電流遮断要素はインダクタを含む、請求項1~4のいずれか1項に記載の発光素子駆動回路。
- 前記電流制御要素は抵抗素子を含む、請求項1~5のいずれか1項に記載の発光素子駆動回路。
- 前記複数の半導体発光素子は共通の半導体基板上に集積されている、請求項1~6のいずれか1項に記載の発光素子駆動回路。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019198559A JP7428500B2 (ja) | 2019-10-31 | 2019-10-31 | 発光素子駆動回路 |
EP20882958.0A EP4016845A4 (en) | 2019-10-31 | 2020-10-22 | DRIVE CIRCUIT FOR A LIGHT EMITTING ELEMENT |
PCT/JP2020/039685 WO2021085292A1 (ja) | 2019-10-31 | 2020-10-22 | 発光素子駆動回路 |
US17/637,487 US11729885B2 (en) | 2019-10-31 | 2020-10-22 | Light-emitting element driving circuit |
CN202080075716.1A CN114616733A (zh) | 2019-10-31 | 2020-10-22 | 发光元件驱动电路 |
KR1020227007840A KR20220092854A (ko) | 2019-10-31 | 2020-10-22 | 발광 소자 구동 회로 |
Applications Claiming Priority (1)
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JP2019198559A JP7428500B2 (ja) | 2019-10-31 | 2019-10-31 | 発光素子駆動回路 |
Publications (2)
Publication Number | Publication Date |
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JP2021072377A JP2021072377A (ja) | 2021-05-06 |
JP7428500B2 true JP7428500B2 (ja) | 2024-02-06 |
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JP2019198559A Active JP7428500B2 (ja) | 2019-10-31 | 2019-10-31 | 発光素子駆動回路 |
Country Status (6)
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US (1) | US11729885B2 (ja) |
EP (1) | EP4016845A4 (ja) |
JP (1) | JP7428500B2 (ja) |
KR (1) | KR20220092854A (ja) |
CN (1) | CN114616733A (ja) |
WO (1) | WO2021085292A1 (ja) |
Citations (10)
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JP2002288864A (ja) | 2001-03-28 | 2002-10-04 | Sankyo Seiki Mfg Co Ltd | 光ヘッドの光源装置 |
JP2002335038A (ja) | 2001-03-05 | 2002-11-22 | Fuji Xerox Co Ltd | 発光素子駆動装置および発光素子駆動システム |
JP2005340774A (ja) | 2004-04-28 | 2005-12-08 | Renesas Technology Corp | レーザーダイオードの駆動回路及び半導体装置 |
US20090187925A1 (en) | 2008-01-17 | 2009-07-23 | Delta Electronic Inc. | Driver that efficiently regulates current in a plurality of LED strings |
JP2011199220A (ja) | 2010-03-24 | 2011-10-06 | Sharp Corp | 発光素子駆動装置 |
US20130187561A1 (en) | 2010-09-29 | 2013-07-25 | Felix Franck | Circuit Arrangement for Operating at Least Two Semiconductor Light Sources |
US20170085057A1 (en) | 2015-09-22 | 2017-03-23 | Analog Devices, Inc. | Pulsed laser diode driver |
US20180278017A1 (en) | 2017-03-23 | 2018-09-27 | Infineon Technologies Ag | Circuit and method for driving a laser diode |
JP2019068528A (ja) | 2017-09-28 | 2019-04-25 | 株式会社リコー | 昇圧回路、電源回路、光源駆動回路及び距離計測装置 |
JP2019135740A (ja) | 2018-02-05 | 2019-08-15 | 住友電気工業株式会社 | レーザ駆動回路及び光送信器 |
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JPS51147983A (en) * | 1975-06-14 | 1976-12-18 | Fujitsu Ltd | Driving circuit for light emission diode |
JP3313571B2 (ja) | 1996-03-29 | 2002-08-12 | 株式会社東芝 | アレイ素子用電流発生回路 |
KR20150141396A (ko) * | 2014-06-10 | 2015-12-18 | 김경일 | 잔상을 제거할 수 있는 led 모듈 |
US10097908B2 (en) * | 2014-12-31 | 2018-10-09 | Macom Technology Solutions Holdings, Inc. | DC-coupled laser driver with AC-coupled termination element |
-
2019
- 2019-10-31 JP JP2019198559A patent/JP7428500B2/ja active Active
-
2020
- 2020-10-22 KR KR1020227007840A patent/KR20220092854A/ko active Search and Examination
- 2020-10-22 WO PCT/JP2020/039685 patent/WO2021085292A1/ja unknown
- 2020-10-22 CN CN202080075716.1A patent/CN114616733A/zh active Pending
- 2020-10-22 US US17/637,487 patent/US11729885B2/en active Active
- 2020-10-22 EP EP20882958.0A patent/EP4016845A4/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002335038A (ja) | 2001-03-05 | 2002-11-22 | Fuji Xerox Co Ltd | 発光素子駆動装置および発光素子駆動システム |
JP2002288864A (ja) | 2001-03-28 | 2002-10-04 | Sankyo Seiki Mfg Co Ltd | 光ヘッドの光源装置 |
JP2005340774A (ja) | 2004-04-28 | 2005-12-08 | Renesas Technology Corp | レーザーダイオードの駆動回路及び半導体装置 |
US20090187925A1 (en) | 2008-01-17 | 2009-07-23 | Delta Electronic Inc. | Driver that efficiently regulates current in a plurality of LED strings |
JP2011199220A (ja) | 2010-03-24 | 2011-10-06 | Sharp Corp | 発光素子駆動装置 |
US20130187561A1 (en) | 2010-09-29 | 2013-07-25 | Felix Franck | Circuit Arrangement for Operating at Least Two Semiconductor Light Sources |
US20170085057A1 (en) | 2015-09-22 | 2017-03-23 | Analog Devices, Inc. | Pulsed laser diode driver |
US20180278017A1 (en) | 2017-03-23 | 2018-09-27 | Infineon Technologies Ag | Circuit and method for driving a laser diode |
JP2019068528A (ja) | 2017-09-28 | 2019-04-25 | 株式会社リコー | 昇圧回路、電源回路、光源駆動回路及び距離計測装置 |
JP2019135740A (ja) | 2018-02-05 | 2019-08-15 | 住友電気工業株式会社 | レーザ駆動回路及び光送信器 |
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Publication number | Publication date |
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EP4016845A1 (en) | 2022-06-22 |
EP4016845A4 (en) | 2023-07-26 |
US20220279638A1 (en) | 2022-09-01 |
KR20220092854A (ko) | 2022-07-04 |
JP2021072377A (ja) | 2021-05-06 |
CN114616733A (zh) | 2022-06-10 |
US11729885B2 (en) | 2023-08-15 |
WO2021085292A1 (ja) | 2021-05-06 |
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