EP1058923A1 - Commande d'un panneau d'affichage lumineux - Google Patents
Commande d'un panneau d'affichage lumineuxInfo
- Publication number
- EP1058923A1 EP1058923A1 EP99938008A EP99938008A EP1058923A1 EP 1058923 A1 EP1058923 A1 EP 1058923A1 EP 99938008 A EP99938008 A EP 99938008A EP 99938008 A EP99938008 A EP 99938008A EP 1058923 A1 EP1058923 A1 EP 1058923A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- display panel
- electrical power
- elements
- color
- 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
Links
- 239000003086 colorant Substances 0.000 claims abstract description 14
- 230000032683 aging Effects 0.000 claims abstract description 5
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- 230000006870 function Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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
- G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
- G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
- G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
-
- 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
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
Definitions
- - and k is a real number at least equal to 0, chosen according to the display to be presented on the panel.
- the known display panels of this type make it possible to produce luminous displays in color.
- the light elements are generally constituted by light-emitting diodes of different technologies depending on the colors, so that the aging of these diodes is different from one color to another. This results in a drift in the colors of the light panel, over time.
- a luminous display panel of the kind in question is essentially characterized in that the electronic control system is adapted to vary over time the reference electrical power Pr specific to the light elements of each color, following a different predetermined variation depending on the colors, to at least partially compensate for the effects of aging of the light elements.
- FIG. 1 is a schematic view showing a luminous display panel according to an embodiment of the invention
- FIG. 2 shows a partial block diagram of the electronic control system of the display panel in FIG. 1
- FIG. 3 gives an example of a correction curve for the reference electrical power of light-emitting diodes of the same color controlled by the same elementary control circuit.
- FIG. 1 represents an example of a luminous display panel in color 1 according to the invention, which can for example be installed in urban areas to broadcast advertising information for road users.
- the display panel 1 comprises a transparent front face 2, which covers arrays 3 of light elements arranged on an opaque background 4.
- the light panel could comprise a single matrix 3 of light elements, extending substantially over the entire front face of the panel.
- the various light-emitting diodes 6, 7, 8 are controlled by an electronic control circuit 9 which comprises: a general control device 10 comprising for example a microprocessor 11 connected to a clock 12 and to a memory 13 as well as to an interface for communication 14 (serial interface, connection to the telephone network, radio link or other) enabling images 13 to be displayed by the panel to be loaded into memory 13
- a general control device 10 comprising for example a microprocessor 11 connected to a clock 12 and to a memory 13 as well as to an interface for communication 14 (serial interface, connection to the telephone network, radio link or other) enabling images 13 to be displayed by the panel to be loaded into memory 13
- the microprocessor 17 controls the electrical power delivered individually to each light-emitting diode by the supply circuit 16, by determining the cyclic operating time of this diode.
- the display panel which has just been described operates as follows.
- the reference electrical powers Pr of the three elementary control circuits 15 of the same pixel subset are such that, when the three light-emitting diodes 6, 7, 8 of the same pixel are all supplied with their reference electrical power corresponding Pr, the pixels in question appear to be white or substantially white.
- each display likely to be presented by the panel 1 corresponds in practice to a set of coefficients k each of between 0 and 100%, corresponding to the percentage of the reference electrical power Pr which must be delivered to the light-emitting diodes. (each coefficient k corresponds to a color of one pixel). These coefficients k are stored in the memory 13 of the general control circuit 10 and are transmitted to the various elementary control devices 15 when a determined display is to be presented by the panel 1.
- the reference electric power Pr should be increased or decreased by a certain value ⁇ Pr on average so that the light intensity is at its normal value ( ⁇ Pr is positive if the reference power has to be increased and negative if it has to be reduced).
- This value ⁇ Pr, determined for each color, is communicated to the microprocessor 11 of the general control circuit 10, for example by means of a control unit connected to the communication interface 14, and the 8
- microprocessor 11 transmits this value ⁇ Pr to microprocessors 17 of the various corresponding elementary control devices 15, as a function of the corrected color. Each corresponding microprocessor 17 then adds the value ⁇ Pr considered to the value b previously stored in the memory 18.
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)
- Electroluminescent Light Sources (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Push-Button Switches (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Display Devices Of Pinball Game Machines (AREA)
- Road Signs Or Road Markings (AREA)
- Holo Graphy (AREA)
- Liquid Crystal (AREA)
- Selective Calling Equipment (AREA)
- Details Of Television Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9802694A FR2775821B1 (fr) | 1998-03-05 | 1998-03-05 | Panneau d'affichage lumineux |
FR9802694 | 1998-03-05 | ||
PCT/FR1999/000475 WO1999045525A1 (fr) | 1998-03-05 | 1999-03-03 | Commande d'un panneau d'affichage lumineux |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1058923A1 true EP1058923A1 (fr) | 2000-12-13 |
EP1058923B1 EP1058923B1 (fr) | 2003-05-28 |
Family
ID=9523690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99938008A Expired - Lifetime EP1058923B1 (fr) | 1998-03-05 | 1999-03-03 | Commande d'un panneau d'affichage lumineux |
Country Status (10)
Country | Link |
---|---|
US (1) | US6756952B1 (fr) |
EP (1) | EP1058923B1 (fr) |
AT (1) | ATE241844T1 (fr) |
AU (1) | AU3257499A (fr) |
DE (1) | DE69908309T2 (fr) |
DK (1) | DK1058923T3 (fr) |
ES (1) | ES2199586T3 (fr) |
FR (1) | FR2775821B1 (fr) |
PT (1) | PT1058923E (fr) |
WO (1) | WO1999045525A1 (fr) |
Families Citing this family (60)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10021968A1 (de) * | 2000-05-05 | 2001-11-29 | Westiform Holding Ag Niederwan | Leuchtreklame, insbesondere Konturbeleuchtung |
ATE355585T1 (de) | 2001-08-23 | 2006-03-15 | Koninkl Philips Electronics Nv | Verfahren und ansteuermittel zur farbkorrektur in einem organischen elektrolumineszenzbauelement |
GB2404274B (en) * | 2003-07-24 | 2007-07-04 | Pelikon Ltd | Control of electroluminescent displays |
CA2443206A1 (fr) | 2003-09-23 | 2005-03-23 | Ignis Innovation Inc. | Panneaux arriere d'ecran amoled - circuits de commande des pixels, architecture de reseau et compensation externe |
CA2472671A1 (fr) | 2004-06-29 | 2005-12-29 | Ignis Innovation Inc. | Procede de programmation par tensions pour affichages a del excitees par courant |
DE102004060199A1 (de) * | 2004-12-14 | 2006-06-29 | Schreiner Group Gmbh & Co. Kg | Helligkeitssensor |
EP2688058A3 (fr) | 2004-12-15 | 2014-12-10 | Ignis Innovation Inc. | Procédé et système pour programmer, étalonner et commander un affichage de dispositif électroluminescent |
US9799246B2 (en) | 2011-05-20 | 2017-10-24 | Ignis Innovation Inc. | System and methods for extraction of threshold and mobility parameters in AMOLED displays |
US10013907B2 (en) | 2004-12-15 | 2018-07-03 | Ignis Innovation Inc. | Method and system for programming, calibrating and/or compensating, and driving an LED display |
US9280933B2 (en) | 2004-12-15 | 2016-03-08 | Ignis Innovation Inc. | System and methods for extraction of threshold and mobility parameters in AMOLED displays |
US8599191B2 (en) | 2011-05-20 | 2013-12-03 | Ignis Innovation Inc. | System and methods for extraction of threshold and mobility parameters in AMOLED displays |
US20140111567A1 (en) | 2005-04-12 | 2014-04-24 | Ignis Innovation Inc. | System and method for compensation of non-uniformities in light emitting device displays |
US9275579B2 (en) | 2004-12-15 | 2016-03-01 | Ignis Innovation Inc. | System and methods for extraction of threshold and mobility parameters in AMOLED displays |
US9171500B2 (en) | 2011-05-20 | 2015-10-27 | Ignis Innovation Inc. | System and methods for extraction of parasitic parameters in AMOLED displays |
US8576217B2 (en) | 2011-05-20 | 2013-11-05 | Ignis Innovation Inc. | System and methods for extraction of threshold and mobility parameters in AMOLED displays |
US10012678B2 (en) | 2004-12-15 | 2018-07-03 | Ignis Innovation Inc. | Method and system for programming, calibrating and/or compensating, and driving an LED display |
CA2496642A1 (fr) | 2005-02-10 | 2006-08-10 | Ignis Innovation Inc. | Methode d'attaque a courte duree de stabilisation pour afficheurs a diodes organiques electroluminescentes (oled) programmes par courant |
KR20080032072A (ko) | 2005-06-08 | 2008-04-14 | 이그니스 이노베이션 인크. | 발광 디바이스 디스플레이 구동 방법 및 시스템 |
CA2518276A1 (fr) | 2005-09-13 | 2007-03-13 | Ignis Innovation Inc. | Technique de compensation de la degradation de luminance dans des dispositifs electroluminescents |
EP2008264B1 (fr) | 2006-04-19 | 2016-11-16 | Ignis Innovation Inc. | Plan de commande stable pour des affichages à matrice active |
CA2556961A1 (fr) | 2006-08-15 | 2008-02-15 | Ignis Innovation Inc. | Technique de compensation de diodes electroluminescentes organiques basee sur leur capacite |
US9384698B2 (en) | 2009-11-30 | 2016-07-05 | Ignis Innovation Inc. | System and methods for aging compensation in AMOLED displays |
US9311859B2 (en) | 2009-11-30 | 2016-04-12 | Ignis Innovation Inc. | Resetting cycle for aging compensation in AMOLED displays |
US10319307B2 (en) | 2009-06-16 | 2019-06-11 | Ignis Innovation Inc. | Display system with compensation techniques and/or shared level resources |
CA2688870A1 (fr) | 2009-11-30 | 2011-05-30 | Ignis Innovation Inc. | Procede et techniques pour ameliorer l'uniformite d'affichage |
CA2669367A1 (fr) | 2009-06-16 | 2010-12-16 | Ignis Innovation Inc | Technique de compensation pour la variation chromatique des ecrans d'affichage . |
US10996258B2 (en) | 2009-11-30 | 2021-05-04 | Ignis Innovation Inc. | Defect detection and correction of pixel circuits for AMOLED displays |
US8803417B2 (en) | 2009-12-01 | 2014-08-12 | Ignis Innovation Inc. | High resolution pixel architecture |
CA2687631A1 (fr) | 2009-12-06 | 2011-06-06 | Ignis Innovation Inc | Mecanisme de commande a faible puissance pour applications d'affichage |
US20140313111A1 (en) | 2010-02-04 | 2014-10-23 | Ignis Innovation Inc. | System and methods for extracting correlation curves for an organic light emitting device |
US10163401B2 (en) | 2010-02-04 | 2018-12-25 | Ignis Innovation Inc. | System and methods for extracting correlation curves for an organic light emitting device |
US9881532B2 (en) | 2010-02-04 | 2018-01-30 | Ignis Innovation Inc. | System and method for extracting correlation curves for an organic light emitting device |
CA2692097A1 (fr) | 2010-02-04 | 2011-08-04 | Ignis Innovation Inc. | Extraction de courbes de correlation pour des dispositifs luminescents |
US10089921B2 (en) | 2010-02-04 | 2018-10-02 | Ignis Innovation Inc. | System and methods for extracting correlation curves for an organic light emitting device |
US10176736B2 (en) | 2010-02-04 | 2019-01-08 | Ignis Innovation Inc. | System and methods for extracting correlation curves for an organic light emitting device |
CA2696778A1 (fr) | 2010-03-17 | 2011-09-17 | Ignis Innovation Inc. | Procedes d'extraction des parametres d'uniformite de duree de vie |
US8907991B2 (en) | 2010-12-02 | 2014-12-09 | Ignis Innovation Inc. | System and methods for thermal compensation in AMOLED displays |
US9530349B2 (en) | 2011-05-20 | 2016-12-27 | Ignis Innovations Inc. | Charged-based compensation and parameter extraction in AMOLED displays |
US9466240B2 (en) | 2011-05-26 | 2016-10-11 | Ignis Innovation Inc. | Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed |
EP3293726B1 (fr) | 2011-05-27 | 2019-08-14 | Ignis Innovation Inc. | Systèmes et procédés de compensation du vieillissement dans des écrans amoled |
US10089924B2 (en) | 2011-11-29 | 2018-10-02 | Ignis Innovation Inc. | Structural and low-frequency non-uniformity compensation |
US9324268B2 (en) | 2013-03-15 | 2016-04-26 | Ignis Innovation Inc. | Amoled displays with multiple readout circuits |
US8937632B2 (en) | 2012-02-03 | 2015-01-20 | Ignis Innovation Inc. | Driving system for active-matrix displays |
US9747834B2 (en) | 2012-05-11 | 2017-08-29 | Ignis Innovation Inc. | Pixel circuits including feedback capacitors and reset capacitors, and display systems therefore |
US8922544B2 (en) | 2012-05-23 | 2014-12-30 | Ignis Innovation Inc. | Display systems with compensation for line propagation delay |
US9336717B2 (en) | 2012-12-11 | 2016-05-10 | Ignis Innovation Inc. | Pixel circuits for AMOLED displays |
US9786223B2 (en) | 2012-12-11 | 2017-10-10 | Ignis Innovation Inc. | Pixel circuits for AMOLED displays |
DE112014000422T5 (de) | 2013-01-14 | 2015-10-29 | Ignis Innovation Inc. | Ansteuerschema für Emissionsanzeigen, das eine Kompensation für Ansteuertransistorschwankungen bereitstellt |
US9830857B2 (en) | 2013-01-14 | 2017-11-28 | Ignis Innovation Inc. | Cleaning common unwanted signals from pixel measurements in emissive displays |
EP3043338A1 (fr) | 2013-03-14 | 2016-07-13 | Ignis Innovation Inc. | Re-interpolation avec détection de bord pour extraire un motif de vieillissement d'écrans amoled |
CN105144361B (zh) | 2013-04-22 | 2019-09-27 | 伊格尼斯创新公司 | 用于oled显示面板的检测*** |
WO2015022626A1 (fr) | 2013-08-12 | 2015-02-19 | Ignis Innovation Inc. | Précision de compensation |
US9741282B2 (en) | 2013-12-06 | 2017-08-22 | Ignis Innovation Inc. | OLED display system and method |
US9761170B2 (en) | 2013-12-06 | 2017-09-12 | Ignis Innovation Inc. | Correction for localized phenomena in an image array |
US9502653B2 (en) | 2013-12-25 | 2016-11-22 | Ignis Innovation Inc. | Electrode contacts |
US10192479B2 (en) | 2014-04-08 | 2019-01-29 | Ignis Innovation Inc. | Display system using system level resources to calculate compensation parameters for a display module in a portable device |
CA2879462A1 (fr) | 2015-01-23 | 2016-07-23 | Ignis Innovation Inc. | Compensation de la variation de couleur dans les dispositifs emetteurs |
CA2889870A1 (fr) | 2015-05-04 | 2016-11-04 | Ignis Innovation Inc. | Systeme de retroaction optique |
CA2892714A1 (fr) | 2015-05-27 | 2016-11-27 | Ignis Innovation Inc | Reduction de largeur de bande de memoire dans un systeme de compensation |
CA2900170A1 (fr) | 2015-08-07 | 2017-02-07 | Gholamreza Chaji | Etalonnage de pixel fonde sur des valeurs de reference ameliorees |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2106299B (en) * | 1981-09-23 | 1985-06-19 | Smiths Industries Plc | Electroluminescent display devices |
JPH0830231A (ja) * | 1994-07-18 | 1996-02-02 | Toshiba Corp | Ledドットマトリクス表示器及びその調光方法 |
US5493183A (en) * | 1994-11-14 | 1996-02-20 | Durel Corporation | Open loop brightness control for EL lamp |
US5936599A (en) * | 1995-01-27 | 1999-08-10 | Reymond; Welles | AC powered light emitting diode array circuits for use in traffic signal displays |
US5812105A (en) * | 1996-06-10 | 1998-09-22 | Cree Research, Inc. | Led dot matrix drive method and apparatus |
US6618031B1 (en) * | 1999-02-26 | 2003-09-09 | Three-Five Systems, Inc. | Method and apparatus for independent control of brightness and color balance in display and illumination systems |
-
1998
- 1998-03-05 FR FR9802694A patent/FR2775821B1/fr not_active Expired - Fee Related
-
1999
- 1999-03-03 WO PCT/FR1999/000475 patent/WO1999045525A1/fr active IP Right Grant
- 1999-03-03 US US09/623,534 patent/US6756952B1/en not_active Expired - Fee Related
- 1999-03-03 DE DE69908309T patent/DE69908309T2/de not_active Expired - Fee Related
- 1999-03-03 AU AU32574/99A patent/AU3257499A/en not_active Abandoned
- 1999-03-03 EP EP99938008A patent/EP1058923B1/fr not_active Expired - Lifetime
- 1999-03-03 DK DK99938008T patent/DK1058923T3/da active
- 1999-03-03 AT AT99938008T patent/ATE241844T1/de not_active IP Right Cessation
- 1999-03-03 ES ES99938008T patent/ES2199586T3/es not_active Expired - Lifetime
- 1999-03-03 PT PT99938008T patent/PT1058923E/pt unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9945525A1 * |
Also Published As
Publication number | Publication date |
---|---|
PT1058923E (pt) | 2003-09-30 |
WO1999045525A1 (fr) | 1999-09-10 |
DK1058923T3 (da) | 2003-09-22 |
ES2199586T3 (es) | 2004-02-16 |
ATE241844T1 (de) | 2003-06-15 |
AU3257499A (en) | 1999-09-20 |
DE69908309T2 (de) | 2004-04-29 |
US6756952B1 (en) | 2004-06-29 |
FR2775821B1 (fr) | 2000-05-26 |
DE69908309D1 (de) | 2003-07-03 |
FR2775821A1 (fr) | 1999-09-10 |
EP1058923B1 (fr) | 2003-05-28 |
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