CA2399373A1 - Energy efficient resonant switching electroluminescent display driver - Google Patents

Energy efficient resonant switching electroluminescent display driver Download PDF

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Publication number
CA2399373A1
CA2399373A1 CA002399373A CA2399373A CA2399373A1 CA 2399373 A1 CA2399373 A1 CA 2399373A1 CA 002399373 A CA002399373 A CA 002399373A CA 2399373 A CA2399373 A CA 2399373A CA 2399373 A1 CA2399373 A1 CA 2399373A1
Authority
CA
Canada
Prior art keywords
display
electroluminescent display
display driver
energy efficient
resonant switching
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
CA002399373A
Other languages
French (fr)
Other versions
CA2399373C (en
Inventor
Chun-Fai Cheng
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.)
iFire IP Corp
Original Assignee
Ifire Technology Inc.
Chun-Fai Cheng
1115901 Alberta Ltd.
Ifire Technology Corp.
Ifire Ip Corporation
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 Ifire Technology Inc., Chun-Fai Cheng, 1115901 Alberta Ltd., Ifire Technology Corp., Ifire Ip Corporation filed Critical Ifire Technology Inc.
Publication of CA2399373A1 publication Critical patent/CA2399373A1/en
Application granted granted Critical
Publication of CA2399373C publication Critical patent/CA2399373C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G09G2330/023—Power management, e.g. power saving using energy recovery or conservation

Abstract

A driving circuit for powering an electroluminescent display using energy recovered from a varying panel capaci-tance of the display. The driving circuit comprises a source of electrical energy;
and a resonant circuit using the panel capacitance for receiving the electrical energy and in response generating a sinusoidal voltage to power the display at a resonance frequency which is substantially synchronized to a scanning frequency of the display. The resonant circuit uses a step down transformer to reduce the effective panel capacitance of the display in order to reduce its effect on the resonance frequency.
CA002399373A 2000-02-16 2001-02-13 Energy efficient resonant switching electroluminescent display driver Expired - Fee Related CA2399373C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/504,472 2000-02-16
US09/504,472 US6448950B1 (en) 2000-02-16 2000-02-16 Energy efficient resonant switching electroluminescent display driver
PCT/CA2001/000165 WO2001061677A1 (en) 2000-02-16 2001-02-13 Energy efficient resonant switching electroluminescent display driver

Publications (2)

Publication Number Publication Date
CA2399373A1 true CA2399373A1 (en) 2001-08-23
CA2399373C CA2399373C (en) 2009-04-21

Family

ID=24006422

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002399373A Expired - Fee Related CA2399373C (en) 2000-02-16 2001-02-13 Energy efficient resonant switching electroluminescent display driver

Country Status (10)

Country Link
US (1) US6448950B1 (en)
EP (1) EP1256109B1 (en)
JP (1) JP2003523533A (en)
KR (1) KR100685536B1 (en)
CN (1) CN1220170C (en)
AU (1) AU3353501A (en)
CA (1) CA2399373C (en)
MX (1) MXPA02007990A (en)
TW (1) TW520611B (en)
WO (1) WO2001061677A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006076791A1 (en) * 2005-01-24 2006-07-27 Ifire Technology Corp. Energy efficient column driver for electroluminescent displays

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3369535B2 (en) * 1999-11-09 2003-01-20 松下電器産業株式会社 Plasma display device
KR100400007B1 (en) * 2001-06-22 2003-09-29 삼성전자주식회사 Apparatus and method for improving power recovery rate of a plasma display panel driver
US6819308B2 (en) * 2001-12-26 2004-11-16 Ifire Technology, Inc. Energy efficient grey scale driver for electroluminescent displays
AU2003283098A1 (en) 2002-11-04 2004-06-07 Ifire Technology Corp. Method and apparatus for gray-scale gamma correction for electroluminescent displays
KR100487811B1 (en) * 2003-07-01 2005-05-06 엘지전자 주식회사 Method And Apparatus For Supplying Sustain Pulse In Plasma Display Panel
US7151338B2 (en) * 2003-10-02 2006-12-19 Hewlett-Packard Development Company, L.P. Inorganic electroluminescent device with controlled hole and electron injection
JP4646187B2 (en) 2004-02-12 2011-03-09 東北パイオニア株式会社 Light emitting display device and drive control method thereof
CN100395800C (en) * 2004-10-25 2008-06-18 南京Lg同创彩色显示系统有限责任公司 Energy reclaiming device and method
KR101072999B1 (en) * 2009-10-16 2011-10-12 삼성에스디아이 주식회사 Plasma display and driving apparatus thereof
WO2016046826A1 (en) * 2014-09-23 2016-03-31 Advanced Magnetic Solutions, Limited Resonant transformers and their applications
US10311792B2 (en) * 2016-07-27 2019-06-04 Landmark Screens, Llc Expanded gamut electroluminescent displays and methods

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US3708717A (en) * 1969-05-16 1973-01-02 Energy Conversion Devices Inc Electroluminescent array and method and apparatus for controlling discrete points on the array
US4070663A (en) * 1975-07-07 1978-01-24 Sharp Kabushiki Kaisha Control system for driving a capacitive display unit such as an EL display panel
US4349816A (en) 1981-03-27 1982-09-14 The United States Of America As Represented By The Secretary Of The Army Drive circuit for matrix displays
US4574342A (en) 1983-08-17 1986-03-04 Rockwell International Corporation Resonance driver
US4707692A (en) 1984-11-30 1987-11-17 Hewlett-Packard Company Electroluminescent display drive system
US4633141A (en) 1985-02-28 1986-12-30 Motorola, Inc. Low voltage power source power inverter for an electroluminescent drive
US4733228A (en) * 1985-07-31 1988-03-22 Planar Systems, Inc. Transformer-coupled drive network for a TFEL panel
US4866349A (en) * 1986-09-25 1989-09-12 The Board Of Trustees Of The University Of Illinois Power efficient sustain drivers and address drivers for plasma panel
AU631375B2 (en) 1988-09-14 1992-11-26 Daichi Co., Ltd. El operating power supply circuit
FI87706C (en) * 1990-06-04 1993-02-10 Planar Int Oy KOPPLING FOER ALSTRING AV RADVALSPULSER OCH FOERFARANDE FOER ATT ALSTRA DYLIKA PULSER
FI87707C (en) 1990-06-20 1993-02-10 Planar Int Oy PROCEDURE FOR ORGANIZATION OF THE EFFECTIVE DEFINITION OF HOS EN ELECTROLUMINESCENSATION DISPLAY AV VAEXELSTROEMSTYP
US5293098A (en) 1992-02-26 1994-03-08 Seg Corporation Power supply for electroluminescent lamps
US5432015A (en) 1992-05-08 1995-07-11 Westaim Technologies, Inc. Electroluminescent laminate with thick film dielectric
US5440208A (en) 1993-10-29 1995-08-08 Motorola, Inc. Driver circuit for electroluminescent panel
US5559402A (en) 1994-08-24 1996-09-24 Hewlett-Packard Company Power circuit with energy recovery for driving an electroluminescent device
US5566064A (en) 1995-05-26 1996-10-15 Apple Computer, Inc. High efficiency supply for electroluminescent panels
US5754064A (en) * 1995-08-11 1998-05-19 Chien; Tseng Lu Driver/control circuit for a electro-luminescent element
US5793342A (en) * 1995-10-03 1998-08-11 Planar Systems, Inc. Resonant mode active matrix TFEL display excitation driver with sinusoidal low power illumination input
US5805124A (en) * 1996-04-04 1998-09-08 Norhtrop Grumman Corporation Symmetric row drive for an electroluminescent display
JP2002508916A (en) * 1997-05-06 2002-03-19 オークランド ユニサービシズ リミテッド Induction power transfer across the widening gap

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006076791A1 (en) * 2005-01-24 2006-07-27 Ifire Technology Corp. Energy efficient column driver for electroluminescent displays

Also Published As

Publication number Publication date
AU3353501A (en) 2001-08-27
KR100685536B1 (en) 2007-02-22
CA2399373C (en) 2009-04-21
EP1256109B1 (en) 2012-07-25
MXPA02007990A (en) 2002-11-29
EP1256109A1 (en) 2002-11-13
TW520611B (en) 2003-02-11
WO2001061677A1 (en) 2001-08-23
CN1220170C (en) 2005-09-21
KR20020077476A (en) 2002-10-11
CN1404599A (en) 2003-03-19
JP2003523533A (en) 2003-08-05
US6448950B1 (en) 2002-09-10

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EEER Examination request
MKLA Lapsed

Effective date: 20190213