WO1994001855A3 - Symmetric drive for an electroluminescent display panel - Google Patents

Symmetric drive for an electroluminescent display panel Download PDF

Info

Publication number
WO1994001855A3
WO1994001855A3 PCT/US1993/006244 US9306244W WO9401855A3 WO 1994001855 A3 WO1994001855 A3 WO 1994001855A3 US 9306244 W US9306244 W US 9306244W WO 9401855 A3 WO9401855 A3 WO 9401855A3
Authority
WO
WIPO (PCT)
Prior art keywords
display panel
vneg
vpos
symmetric drive
panel
Prior art date
Application number
PCT/US1993/006244
Other languages
French (fr)
Other versions
WO1994001855A2 (en
Inventor
Mohan L Kapoor
Thomas J Rebeschi
Original Assignee
United Technologies Corp
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 United Technologies Corp filed Critical United Technologies Corp
Priority to EP93915500A priority Critical patent/EP0648362A1/en
Priority to JP6503403A priority patent/JPH08508825A/en
Publication of WO1994001855A2 publication Critical patent/WO1994001855A2/en
Publication of WO1994001855A3 publication Critical patent/WO1994001855A3/en

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
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0204—Compensation of DC component across the pixels in flat 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of El Displays (AREA)

Abstract

A power supply for providing a symmetric drive for an AC electroluminescent (EL) display panel includes a single power supply which provides two voltage signal values of opposite polarity Vpos, Vneg to the panel's row drivers. The supply also corrects the difference between the two voltage signal values Vpos, Vneg as a function of the difference between the maximum column driver voltage value Vcol and its nominal value to reduce latent images on the display panel. By utilizing a single switching regulator to generate the opposite polarity row voltages Vpos, Vneg the circuit complexity and cost associated with providing a symmetric drive for an EL panel is reduced.
PCT/US1993/006244 1992-06-30 1993-06-30 Symmetric drive for an electroluminescent display panel WO1994001855A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP93915500A EP0648362A1 (en) 1992-06-30 1993-06-30 Symmetric drive for an electroluminescent display panel
JP6503403A JPH08508825A (en) 1992-06-30 1993-06-30 Symmetrical drive for EL display panel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US90660592A 1992-06-30 1992-06-30
US906,605 1992-06-30

Publications (2)

Publication Number Publication Date
WO1994001855A2 WO1994001855A2 (en) 1994-01-20
WO1994001855A3 true WO1994001855A3 (en) 1994-04-14

Family

ID=25422704

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/006244 WO1994001855A2 (en) 1992-06-30 1993-06-30 Symmetric drive for an electroluminescent display panel

Country Status (5)

Country Link
US (1) US5550557A (en)
EP (1) EP0648362A1 (en)
JP (1) JPH08508825A (en)
CA (1) CA2137803A1 (en)
WO (1) WO1994001855A2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994014154A1 (en) * 1992-12-10 1994-06-23 Westinghouse Electric Corporation Increased brightness drive system for an electroluminescent display panel
JP3241577B2 (en) * 1995-11-24 2001-12-25 日本電気株式会社 Display panel drive circuit
US5805124A (en) * 1996-04-04 1998-09-08 Norhtrop Grumman Corporation Symmetric row drive for an electroluminescent display
US5781167A (en) * 1996-04-04 1998-07-14 Northrop Grumman Corporation Analog video input flat panel display interface
US5812101A (en) * 1996-04-04 1998-09-22 Northrop Grumman Corporation High performance, low cost helmet mounted display
JP3178342B2 (en) * 1996-06-17 2001-06-18 松下電器産業株式会社 Information provision system using network
JP3667928B2 (en) * 1997-03-18 2005-07-06 パイオニア株式会社 EL element driving apparatus and driving method
US5900851A (en) * 1998-05-13 1999-05-04 Ut Automotive Dearborn, Inc. Electroluminescent panel drive optimization
US6803890B1 (en) * 1999-03-24 2004-10-12 Imaging Systems Technology Electroluminescent (EL) waveform
US8170538B2 (en) 1999-12-06 2012-05-01 Solocron Media, Llc Methods and apparatuses for programming user-defined information into electronic devices
US6496692B1 (en) * 1999-12-06 2002-12-17 Michael E. Shanahan Methods and apparatuses for programming user-defined information into electronic devices
US7149509B2 (en) * 1999-12-06 2006-12-12 Twenty Year Innovations, Inc. Methods and apparatuses for programming user-defined information into electronic devices
TWI280547B (en) * 2000-02-03 2007-05-01 Samsung Electronics Co Ltd Liquid crystal display and driving method thereof
CA2504990A1 (en) 2002-11-04 2004-05-21 Ifire Technology Corp. Method and apparatus for gray-scale gamma correction for electroluminescent displays
US7193624B2 (en) * 2003-11-24 2007-03-20 Amtran Technology Co., Ltd. Display apparatus with power saving capability
KR100599649B1 (en) * 2003-11-24 2006-07-12 삼성에스디아이 주식회사 Driving apparatus of plasma display panel
KR101262785B1 (en) * 2006-07-19 2013-05-10 삼성디스플레이 주식회사 Liquid crystal display and method of driving the same
KR20110138722A (en) 2010-06-21 2011-12-28 삼성모바일디스플레이주식회사 Organic light emitting display and power supply for the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595075A (en) * 1978-05-12 1981-08-05 Gen Electric Co Ltd Electroluminescent display means incorporating electrical circuit arrangements supplying constant power
US4733228A (en) * 1985-07-31 1988-03-22 Planar Systems, Inc. Transformer-coupled drive network for a TFEL panel
EP0377955A1 (en) * 1988-12-09 1990-07-18 United Technologies Corporation Row drive for EL panels and the like with inductor coupling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027040A (en) * 1988-09-14 1991-06-25 Daichi Company, Ltd. EL operating power supply circuit
JPH02143297A (en) * 1988-11-25 1990-06-01 Alps Electric Co Ltd Drive circuit for el display element
US5144203A (en) * 1989-04-26 1992-09-01 Nec Corporation Circuit for driving an electric field luminous lamp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595075A (en) * 1978-05-12 1981-08-05 Gen Electric Co Ltd Electroluminescent display means incorporating electrical circuit arrangements supplying constant power
US4733228A (en) * 1985-07-31 1988-03-22 Planar Systems, Inc. Transformer-coupled drive network for a TFEL panel
EP0377955A1 (en) * 1988-12-09 1990-07-18 United Technologies Corporation Row drive for EL panels and the like with inductor coupling

Also Published As

Publication number Publication date
JPH08508825A (en) 1996-09-17
CA2137803A1 (en) 1994-01-20
WO1994001855A2 (en) 1994-01-20
US5550557A (en) 1996-08-27
EP0648362A1 (en) 1995-04-19

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