EP0866440A3 - LED matrix display - Google Patents

LED matrix display Download PDF

Info

Publication number
EP0866440A3
EP0866440A3 EP98102263A EP98102263A EP0866440A3 EP 0866440 A3 EP0866440 A3 EP 0866440A3 EP 98102263 A EP98102263 A EP 98102263A EP 98102263 A EP98102263 A EP 98102263A EP 0866440 A3 EP0866440 A3 EP 0866440A3
Authority
EP
European Patent Office
Prior art keywords
display
monitoring device
matrix display
rows
columns
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
EP98102263A
Other languages
German (de)
French (fr)
Other versions
EP0866440B1 (en
EP0866440A2 (en
Inventor
Bernd Dipl.-Ing. Eschbach
Erwin Baumstark
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.)
Dambach Werke GmbH
Original Assignee
Dambach Werke GmbH
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 Dambach Werke GmbH filed Critical Dambach Werke GmbH
Publication of EP0866440A2 publication Critical patent/EP0866440A2/en
Publication of EP0866440A3 publication Critical patent/EP0866440A3/en
Application granted granted Critical
Publication of EP0866440B1 publication Critical patent/EP0866440B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • 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
    • G09G3/32—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 semiconductive, e.g. using light-emitting diodes [LED]
    • 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
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S345/00—Computer graphics processing and selective visual display systems
    • Y10S345/904—Display with fail/safe testing feature

Landscapes

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

Abstract

The device has display points arranged in rows and columns, driven by a controller and monitored for display faults by a monitoring device. The monitoring device has a current detector (S) which can detect the drive current to each display point and which can be associated with the display point by the monitoring device. A current detector can be provided for each row or column. The rows (y) and columns (x) associated with the coordinate node points of the display points (L) to be activated are driven cyclically in multiplex manner at a frequency which enables the light emitting diodes to be activated at a rate above the flicker coalescence frequency.
EP98102263A 1997-03-15 1998-02-10 LED matrix display Expired - Lifetime EP0866440B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19710855A DE19710855A1 (en) 1997-03-15 1997-03-15 LED matrix display device
DE19710855 1997-03-15

Publications (3)

Publication Number Publication Date
EP0866440A2 EP0866440A2 (en) 1998-09-23
EP0866440A3 true EP0866440A3 (en) 2001-02-07
EP0866440B1 EP0866440B1 (en) 2004-09-29

Family

ID=7823532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98102263A Expired - Lifetime EP0866440B1 (en) 1997-03-15 1998-02-10 LED matrix display

Country Status (4)

Country Link
US (1) US6486860B1 (en)
EP (1) EP0866440B1 (en)
AT (1) ATE278234T1 (en)
DE (2) DE19710855A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1025501B1 (en) * 1997-10-29 2002-04-03 Continental Teves AG & Co. oHG Method and device for checking an error control procedure of a circuit
DE19951348A1 (en) * 1999-10-25 2001-05-31 Dambach Werke Gmbh Display device has display modules arranged in at least one column and/or at least one row with separate module housing accommodated in bearer structure, common control unit and supply
JP4561033B2 (en) * 2000-07-28 2010-10-13 日亜化学工業株式会社 Display device drive circuit and display device
DE10048440A1 (en) * 2000-09-29 2002-04-25 Siemens Ag Display element and module for forming a display element consists of multiple optically coupled display modules set adjacent to each other.
DE10121177A1 (en) 2001-04-30 2002-11-14 Aeg Ges Moderne Inf Sys Mbh LCD cell
DE10125673A1 (en) 2001-05-25 2002-12-05 Aeg Ges Moderne Inf Sys Mbh LCD cell
DE10158784B4 (en) * 2001-11-30 2006-03-16 Infineon Technologies Ag A method for determining a distance of processor units to at least one reference position in a processor arrangement and processor arrangement
EP1449110A2 (en) * 2001-11-30 2004-08-25 Infineon Technologies AG Method for determination of a separation from processor units to at least one reference position in a processor arrangement and processor arrangement
JP3866606B2 (en) * 2002-04-08 2007-01-10 Ｎｅｃエレクトロニクス株式会社 Display device drive circuit and drive method thereof
AU2003229382B2 (en) * 2002-05-28 2008-07-10 Compusign Pty Ltd Array monitoring
AUPS261402A0 (en) * 2002-05-28 2002-06-20 Compusign Pty Ltd Array monitoring
JP4001331B2 (en) * 2002-06-27 2007-10-31 本田技研工業株式会社 Engine starter
JP3950845B2 (en) * 2003-03-07 2007-08-01 キヤノン株式会社 Driving circuit and evaluation method thereof
DE102004034761A1 (en) * 2004-07-12 2006-02-02 E.G.O. Elektro-Gerätebau GmbH Cooking system for a glass ceramic hob comprises a display unit having a number of illuminating diodes in the form of a field, in which the field has more than two illuminating diodes in each direction
CN100405072C (en) * 2004-08-10 2008-07-23 康佳集团股份有限公司 LED screen dead pixel detection method and circuit therefor
DE102009042619B3 (en) * 2009-09-23 2010-12-09 Audi Ag Display device for motor vehicle, has control equipment for providing pictures and for controlling pixel giver and collection unit coupled with control equipment
US20110140992A1 (en) * 2009-12-16 2011-06-16 Isign Display Systems Llc (Hangzhou) LED display
CN101964166A (en) * 2010-09-13 2011-02-02 南京通用电器有限公司 Circuit for detecting dead pixel of LED display screen and method thereof
DE102012212356A1 (en) * 2012-07-13 2014-01-16 Siemens Aktiengesellschaft Method for displaying condition of electric lines of e.g. pilot relay, in electrical system, involves performing multiplex-like pressurizing of nearest lines from monitoring contacts after checking contacts actuated with output voltage
CN113707569B (en) * 2021-08-25 2024-02-09 厦门天马显示科技有限公司 Display panel detection method and display panel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3206123A1 (en) * 1982-02-20 1983-09-01 Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen Method and circuit arrangement for checking and detecting errors during the operation of a multi-digit fluorescent display
US4764728A (en) * 1985-08-29 1988-08-16 Mitsubishi Denki Kabushiki Kaisha Apparatus for detecting position of faulty light emitting element in large screen display system
EP0295478A2 (en) * 1987-06-03 1988-12-21 Prisma Skyltreklam Ab Electronic sign with a number of light bulbs provided in rows and columns
GB2210720A (en) * 1987-10-09 1989-06-14 Eric Cheng LED displays
US5113134A (en) * 1991-02-28 1992-05-12 Thomson, S.A. Integrated test circuit for display devices such as LCD's
US5444390A (en) * 1994-02-02 1995-08-22 Texas Digital Systems, Inc. Means and method for sequentially testing electrical components
US5594463A (en) * 1993-07-19 1997-01-14 Pioneer Electronic Corporation Driving circuit for display apparatus, and method of driving display apparatus

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909788A (en) * 1971-09-27 1975-09-30 Litton Systems Inc Driving circuits for light emitting diodes
US4103299A (en) * 1976-10-12 1978-07-25 Cutler-Hammer, Inc. Two-wire pilot device solid state control system
DE2727800B2 (en) * 1977-06-21 1979-08-02 Vogel & Halke, 2000 Hamburg Circuit arrangement for operation and function error monitoring for LED displays
DE2952009A1 (en) * 1979-12-21 1981-07-09 Günter Wulff-Apparatebau GmbH, 1000 Berlin TEST CIRCUIT FOR OPTICAL INDICATORS
DD252520A3 (en) 1985-10-22 1987-12-23 Radebeul Rapido Waegetechnik CIRCUIT FOR VERIFYING AN LED DISPLAY
US5122733A (en) * 1986-01-15 1992-06-16 Karel Havel Variable color digital multimeter
US5198803A (en) * 1990-06-06 1993-03-30 Opto Tech Corporation Large scale movie display system with multiple gray levels
DE4024499C1 (en) * 1990-08-02 1991-09-26 Dambach-Werke Gmbh, 7560 Gaggenau, De
GB9115402D0 (en) * 1991-07-17 1991-09-04 Philips Electronic Associated Matrix display device and its method of operation
DE4203276A1 (en) 1991-09-19 1993-04-01 Ronkholz Karl Heinz Monitoring of information displayed by light-emitting diodes - registering data and control signals by groups of diodes through which current is assessed
US5317307A (en) * 1992-05-22 1994-05-31 Intel Corporation Method for pulse width modulation of LEDs with power demand load leveling
JP3485654B2 (en) * 1994-11-28 2004-01-13 三洋電機株式会社 Display device adjustment method
US5719589A (en) * 1996-01-11 1998-02-17 Motorola, Inc. Organic light emitting diode array drive apparatus
US5684368A (en) * 1996-06-10 1997-11-04 Motorola Smart driver for an array of LEDs
US5903246A (en) * 1997-04-04 1999-05-11 Sarnoff Corporation Circuit and method for driving an organic light emitting diode (O-LED) display

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3206123A1 (en) * 1982-02-20 1983-09-01 Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen Method and circuit arrangement for checking and detecting errors during the operation of a multi-digit fluorescent display
US4764728A (en) * 1985-08-29 1988-08-16 Mitsubishi Denki Kabushiki Kaisha Apparatus for detecting position of faulty light emitting element in large screen display system
EP0295478A2 (en) * 1987-06-03 1988-12-21 Prisma Skyltreklam Ab Electronic sign with a number of light bulbs provided in rows and columns
GB2210720A (en) * 1987-10-09 1989-06-14 Eric Cheng LED displays
US5113134A (en) * 1991-02-28 1992-05-12 Thomson, S.A. Integrated test circuit for display devices such as LCD's
US5594463A (en) * 1993-07-19 1997-01-14 Pioneer Electronic Corporation Driving circuit for display apparatus, and method of driving display apparatus
US5444390A (en) * 1994-02-02 1995-08-22 Texas Digital Systems, Inc. Means and method for sequentially testing electrical components

Also Published As

Publication number Publication date
EP0866440B1 (en) 2004-09-29
ATE278234T1 (en) 2004-10-15
DE19710855A1 (en) 1998-10-01
DE59812012D1 (en) 2004-11-04
US6486860B1 (en) 2002-11-26
EP0866440A2 (en) 1998-09-23

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