GB201120073D0 - Led light source with passive chromaticity tuning - Google Patents

Led light source with passive chromaticity tuning

Info

Publication number
GB201120073D0
GB201120073D0 GBGB1120073.0A GB201120073A GB201120073D0 GB 201120073 D0 GB201120073 D0 GB 201120073D0 GB 201120073 A GB201120073 A GB 201120073A GB 201120073 D0 GB201120073 D0 GB 201120073D0
Authority
GB
United Kingdom
Prior art keywords
light emitting
electrical
string
emitting module
chromaticity
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.)
Withdrawn
Application number
GBGB1120073.0A
Other versions
GB2496851A (en
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.)
Photonstar Led Ltd
Original Assignee
Photonstar Led Ltd
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 Photonstar Led Ltd filed Critical Photonstar Led Ltd
Priority to GB1120073.0A priority Critical patent/GB2496851A/en
Publication of GB201120073D0 publication Critical patent/GB201120073D0/en
Priority to PCT/GB2012/052878 priority patent/WO2013076480A2/en
Publication of GB2496851A publication Critical patent/GB2496851A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
    • H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
    • 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]
    • 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]
    • H05B45/20—Controlling the colour of the light
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/10—Details of semiconductor or other solid state devices to be connected
    • H01L2924/11—Device type
    • H01L2924/12—Passive devices, e.g. 2 terminal devices
    • H01L2924/1204—Optical Diode
    • H01L2924/12044—OLED
    • 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
    • H05B45/35—Balancing circuits
    • 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]

Abstract

A light emitting module 200 (500, figure 5) employs non-identical, unmatched devices 202, 203 in two device strings 201, 203 electrically connected in parallel to provide the ability to passively modify the resultant optical properties of the light emitting module, such as chromaticity and luminance (figures 2 and 2F) by simple changes in the electrical activation of the overall light emitting module. Each string comprises at least one electrical device, including at least one light emitting device. The string may contain non light emitting device for example a transistor, diode, resistor integrated circuit or operational amplifier. The electrical devices are selected such that the ratio of their respective luminous flux and the non-zero difference between their effective resistances varies with the amount of electrical activation. Also, the chromaticity point of each string is different and the colour chromaticity point of the module varies with the amount of electrical activation, such as a constant current supplied to the light emitting module 200. In another embodiment a third device string is arranged in parallel to the two previously described device strings. No complex active electrical regulation, monitoring or feedback to the individual strings of LEDs is required.
GB1120073.0A 2011-11-21 2011-11-21 Led light source with passive chromaticity tuning Withdrawn GB2496851A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1120073.0A GB2496851A (en) 2011-11-21 2011-11-21 Led light source with passive chromaticity tuning
PCT/GB2012/052878 WO2013076480A2 (en) 2011-11-21 2012-11-21 Led light source with passive chromaticity tuning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1120073.0A GB2496851A (en) 2011-11-21 2011-11-21 Led light source with passive chromaticity tuning

Publications (2)

Publication Number Publication Date
GB201120073D0 true GB201120073D0 (en) 2012-01-04
GB2496851A GB2496851A (en) 2013-05-29

Family

ID=45475485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1120073.0A Withdrawn GB2496851A (en) 2011-11-21 2011-11-21 Led light source with passive chromaticity tuning

Country Status (2)

Country Link
GB (1) GB2496851A (en)
WO (1) WO2013076480A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10432898B2 (en) * 2013-12-20 2019-10-01 Casio Computer Co., Ltd. Projector having light source including laser diodes
US9192013B1 (en) * 2014-06-06 2015-11-17 Cree, Inc. Lighting devices with variable gamut

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS556687A (en) 1978-06-29 1980-01-18 Handotai Kenkyu Shinkokai Traffic use display
JPS5517180A (en) 1978-07-24 1980-02-06 Handotai Kenkyu Shinkokai Light emitting diode display
JPH071804B2 (en) 1989-02-15 1995-01-11 シャープ株式会社 Light emitting element array light source
JP2847358B2 (en) * 1996-05-01 1999-01-20 株式会社三工社 White signal light with light emitting diode
EP2154721B1 (en) 2002-08-29 2019-08-07 Seoul Semiconductor Co., Ltd. Light-emitting device having light-emitting diodes
JP2005129877A (en) * 2003-10-22 2005-05-19 Sc Technology Kk Method of arranging and connecting light emitting diode
JP2006065724A (en) * 2004-08-30 2006-03-09 Toshiba Lighting & Technology Corp Beacon system
JP4061312B2 (en) * 2005-01-18 2008-03-19 松下電器産業株式会社 Light emitting diode driving semiconductor device and light emitting diode driving device
JP4869744B2 (en) * 2006-03-09 2012-02-08 株式会社 日立ディスプレイズ LED lighting device and liquid crystal display device using the same
CN201191933Y (en) * 2008-01-18 2009-02-04 和谐光电科技（泉州）有限公司 LED regulating device with color temperature and color rendering adjustable
CN201228867Y (en) * 2008-06-06 2009-04-29 宁波永丰园林绿化建设有限公司 LED semiconductor plant light supplement lamp
GB2458972B (en) 2008-08-05 2010-09-01 Photonstar Led Ltd Thermally optimised led chip-on-board module
JP5763555B2 (en) * 2009-03-12 2015-08-12 コーニンクレッカ フィリップス エヌ ヴェ LED lighting device with color temperature behavior of incandescent lamp
CN201621605U (en) * 2009-11-13 2010-11-03 深圳市建滔科技有限公司 Gradually varying backlight device
KR20110102062A (en) * 2010-03-10 2011-09-16 삼성엘이디 주식회사 Led device capable of tuning correlated color temperature

Also Published As

Publication number Publication date
GB2496851A (en) 2013-05-29
WO2013076480A2 (en) 2013-05-30
WO2013076480A3 (en) 2013-07-18

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)