EP2938162A3 - Led circuit and driving method thereof - Google Patents

Led circuit and driving method thereof Download PDF

Info

Publication number
EP2938162A3
EP2938162A3 EP15164238.6A EP15164238A EP2938162A3 EP 2938162 A3 EP2938162 A3 EP 2938162A3 EP 15164238 A EP15164238 A EP 15164238A EP 2938162 A3 EP2938162 A3 EP 2938162A3
Authority
EP
European Patent Office
Prior art keywords
led
uni
unit
integrated circuit
circuit
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.)
Granted
Application number
EP15164238.6A
Other languages
German (de)
French (fr)
Other versions
EP2938162A2 (en
EP2938162B1 (en
Inventor
Chi-Gin Wang
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.)
Maintech Semiconductor Inc
Original Assignee
Maintech Semiconductor Inc
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
Priority claimed from TW103207113U external-priority patent/TWM487395U/en
Priority claimed from TW103208747U external-priority patent/TWM493218U/en
Application filed by Maintech Semiconductor Inc filed Critical Maintech Semiconductor Inc
Publication of EP2938162A2 publication Critical patent/EP2938162A2/en
Publication of EP2938162A3 publication Critical patent/EP2938162A3/en
Application granted granted Critical
Publication of EP2938162B1 publication Critical patent/EP2938162B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

Landscapes

  • Led Devices (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

An LED circuit (2, 3) includes a plurality of (22, 32) LED devices (U0, U1,..., UN), a power supply circuit (21) and a signal control circuit (23, 33). Each of the plurality of (22, 32) LED devices (U0, U1,..., UN) includes an LED unit (U0L, U1L, ... , UNL) and an integrated circuit unit (U0I, U1I,..., UNI) having a specific serial number (0, 1,..., N). The signal control circuit (23, 33) is coupled between the power supply circuit (21) and the plurality of LED devices (22, 32), and transmitting an electric parameter carrying a signal code (ENC1) to each of the integrated circuit units (U0I, U1I,..., UNI), wherein a specific LED unit (U0L, U1L,..., UNL) is driven by a corresponding integrated circuit unit (U0I, U1I,..., UNI) when the signal code (ENC1) corresponds to the specific serial number (0, 1,..., N) of the corresponding integrated circuit unit (U0I, U1I,..., UNI).
EP15164238.6A 2014-04-24 2015-04-20 Led circuit and driving method thereof Active EP2938162B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW103207113U TWM487395U (en) 2014-04-24 2014-04-24 LED structure with sequence number
TW103208747U TWM493218U (en) 2014-05-20 2014-05-20 Two-wire type LED lamp circuit with independent control

Publications (3)

Publication Number Publication Date
EP2938162A2 EP2938162A2 (en) 2015-10-28
EP2938162A3 true EP2938162A3 (en) 2015-11-04
EP2938162B1 EP2938162B1 (en) 2018-01-03

Family

ID=52991566

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15164238.6A Active EP2938162B1 (en) 2014-04-24 2015-04-20 Led circuit and driving method thereof

Country Status (1)

Country Link
EP (1) EP2938162B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070145915A1 (en) * 2003-05-05 2007-06-28 Color Kinetics Incorporated Lighting methods and systems
WO2008060469A2 (en) * 2006-11-10 2008-05-22 Philips Solid-State Lighting Solutions, Inc. Methods and apparatus for controlling series-connected leds
US20090289578A1 (en) * 2008-05-23 2009-11-26 Peng Wen-Chi Parallel type single-wire addressable lighting device
US20130088170A1 (en) * 2011-10-06 2013-04-11 Excelliance Mos Corporation Driving circuit of light emitting diode and light source apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM343822U (en) 2008-03-21 2008-11-01 Mosdesign Semiconductor Corp Simultaneous LED cascade circuit of two-cord AC power

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070145915A1 (en) * 2003-05-05 2007-06-28 Color Kinetics Incorporated Lighting methods and systems
WO2008060469A2 (en) * 2006-11-10 2008-05-22 Philips Solid-State Lighting Solutions, Inc. Methods and apparatus for controlling series-connected leds
US20090289578A1 (en) * 2008-05-23 2009-11-26 Peng Wen-Chi Parallel type single-wire addressable lighting device
US20130088170A1 (en) * 2011-10-06 2013-04-11 Excelliance Mos Corporation Driving circuit of light emitting diode and light source apparatus

Also Published As

Publication number Publication date
EP2938162A2 (en) 2015-10-28
EP2938162B1 (en) 2018-01-03

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