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DE10009204A1 - Process for controlling actively addressed OLED displays - Google Patents

Process for controlling actively addressed OLED displays

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Publication number
DE10009204A1
DE10009204A1 DE2000109204 DE10009204A DE10009204A1 DE 10009204 A1 DE10009204 A1 DE 10009204A1 DE 2000109204 DE2000109204 DE 2000109204 DE 10009204 A DE10009204 A DE 10009204A DE 10009204 A1 DE10009204 A1 DE 10009204A1
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DE
Germany
Prior art keywords
display
current
memory
image
pixel
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.)
Ceased
Application number
DE2000109204
Other languages
German (de)
Inventor
Stefan Polach
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.)
Universitaet Stuttgart
Original Assignee
Universitaet Stuttgart
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 Universitaet Stuttgart filed Critical Universitaet Stuttgart
Priority to DE2000109204 priority Critical patent/DE10009204A1/en
Publication of DE10009204A1 publication Critical patent/DE10009204A1/en
Ceased 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
    • 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]
    • G09G3/3208—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] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—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] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—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] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0404—Matrix technologies
    • G09G2300/0417—Special arrangements specific to the use of low carrier mobility technology
    • 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
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • 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
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
    • 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

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  • 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)

Abstract

The method involves measuring the current-voltage characteristic of each image point for compensating for the transistor (T1, T2) parameter fluctuations and manipulating the information for display from memory (13) if the characteristic differs from the ideal during operation of the display. The information is manipulated so that the overall brightness of the displayed image corresponds to the desired value. Independent claims are also included for the following: an actively addressed Organic LED display.

Description

Die Erfindung betrifft ein Verfahren zur Ansteuerung von aktiv adressierten OLED-Displays mit zwei Transistoren je Bildpunkt und einer organischen, Licht emittierenden Schicht sowie ein solches OLED-Display.The invention relates to a method for controlling active addressed OLED displays with two transistors per pixel and an organic, light-emitting layer and a such OLED display.

Zur aktiven Adressierung von OLED-Displays werden nach dem aktuellen Stand der Technik zwei Transistoren in jeden Bild­ punkt integriert, wobei die Transistoren in der Regel Polysi­ liziumtransistoren sind. Einer der Transistoren wirkt dabei als Schaltelement zur Bildpunktselektion und der andere als Analogverstärker. Parameterschwankungen der Transistoren, wie beispielsweise das Driften der Schwellspannung oder auch das Altern des organischen, Licht emittierenden Materials, führen zu Helligkeitsschwankungen des Bildes über der Displayober­ fläche und damit zu einer Verfälschung des Bildeindrucks beim Betrachter. Zur Abhilfe dieses Problems wurden in jüngster Zeit Displays mit bis zu vier Transistoren je Bildpunkt vor­ geschlagen, um beispielsweise die Drift der Schwellspannung korrigieren zu können. Eine solche Lösung wurde beispielsweise von R. M. A. Dawson in "Design of an Improved Pixel for a Poly­ silicon Active-Matrix Organic LED Display, SID 1998, Anaheim California" beschrieben. Diese Lösungen sind jedoch sehr kom­ plex und erhöhen den technologischen Aufwand bei der Display- Herstellung, wodurch jedoch auch die Fertigungsausbeute sinkt.For active addressing of OLED displays, two transistors are integrated into each pixel according to the current state of the art, the transistors being usually polysilicon transistors. One of the transistors acts as a switching element for pixel selection and the other as an analog amplifier. Fluctuations in the parameters of the transistors, such as the drifting of the threshold voltage or the aging of the organic, light-emitting material, lead to fluctuations in the brightness of the image above the display surface and thus to a distortion of the viewer's impression. To remedy this problem, displays with up to four transistors per pixel have recently been proposed, for example to be able to correct the drift of the threshold voltage. Such a solution was described, for example, by RMA Dawson in "Design of an Improved Pixel for a Poly silicon Active-Matrix Organic LED Display, SID 1998 , Anaheim California". However, these solutions are very complex and increase the technological effort in the manufacture of the display, but this also reduces the production yield.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Verfahren und ein Display vorzuschlagen, bei dem Parameter­ schwankungen der Transistoren und/oder die Alterung der Licht emittierenden Schicht eines aktiv adressierten OLED-Displays ohne zusätzliche, in den Bildpunkten integrierte Transistoren kompensiert und ein über die gesamte Fläche des Displays gleichbleibend heller Bildeindruck garantiert wird.The present invention is based on the object Propose method and a display at the parameter fluctuations in the transistors and / or aging of the light emitting layer of an actively addressed OLED display without additional transistors integrated in the pixels compensated and one over the entire area of the display consistently bright image impression is guaranteed.

Die Aufgabe wird mit einem Verfahren zur Ansteuerung von aktiv adressierten OLED-Displays mit zwei Transistoren je Bildpunkt und einer organischen, Licht emittierenden Schicht gelöst, das dadurch gekennzeichnet ist, dass zum Ausgleich der Parameter­ schwankungen der Transistoren und/oder der Alterung der orga­ nischen Schicht die Strom-Spannungs-Kennlinie jedes Bildpunkts gemessen wird und bei Abweichung der Kennlinien von der Ideal- Kennlinie während des Betriebs des Displays die von einem Bildspeicher kommende, durch das Display anzuzeigende Bild­ information durch eine Ansteuerelektronik derart manipuliert wird, dass die Helligkeit des vom Display erzeugten Bildes ganzflächig dem gewünschten Wert entspricht. Mit Hilfe dieses Verfahrens ist es also ohne zusätzliche, in den Bildpunkten integrierte Transistoren möglich, ein Bild mit einem gleichmä­ ßigen Helligkeitseindruck zu erzeugen. Vorteilhaft beim erfin­ dungsgemäßen Verfahren ist außerdem, dass zur Kontrolle der Helligkeit des Bildes keine Kontrollbilder durch Kameras oder optische Sensoren aufgenommen werden müssen. The task becomes active with a procedure for controlling addressed OLED displays with two transistors per pixel and an organic light-emitting layer, which is characterized in that to balance the parameters fluctuations in the transistors and / or the aging of the orga layer, the current-voltage characteristic of each pixel is measured and if the characteristic curves deviate from the ideal Characteristic curve during the operation of the display by a Image memory incoming image to be shown on the display information manipulated in this way by control electronics is that the brightness of the image generated by the display corresponds to the desired value over the entire surface. With the help of this The process is therefore without additional, in the pixels integrated transistors possible, an image with an even to produce ßige brightness impression. Advantageous to invent The inventive method is also that to control the Brightness of the picture no control pictures by cameras or optical sensors must be included.  

Vorzugsweise kann zur Ermittlung der Strom-Spannungs-Kennli­ nien der Bildpunkte ein Eichbild vom Bildspeicher in das Dis­ play eingeschrieben werden und die dabei auftretenden Ströme und Spannungen in jedem Bildpunkt gemessen werden. Die Strom- Spannungs-Kennlinien der Bildpunkte können zweckmäßigerweise in einem Speicher abgelegt werden, der mit der Ansteuerelek­ tronik verbunden ist. Dabei hängt die Genauigkeit der einge­ schriebenen Kennlinien von der Speichertiefe des Speichers ab. Bei einer besonders einfachen Lösung können auch nur die Schwellspannungen je Bildpunkt abgelegt werden.Preferably, to determine the current-voltage characteristic a calibration image from the image memory into the dis play and the currents that occur and voltages are measured in each pixel. The electricity Voltage characteristics of the pixels can expediently be stored in a memory that is connected to the control electronics tronics is connected. The accuracy depends on the written characteristic curves from the memory depth of the memory. With a particularly simple solution, only those can Threshold voltages are stored per pixel.

Die Eichung, das heißt die Ermittlung der Strom-Spannungs- Kennlinien der Bildpunkte, kann auch während des Betriebs des Displays durchgeführt werden, da hierzu nur wenige Bildperi­ oden benötigt werden, die vom Betrachter nicht wahrgenommen werden.The calibration, i.e. the determination of the current-voltage Characteristic curves of the pixels, can also during operation of the Displays are carried out because there are only a few image peri odes are required that are not perceived by the viewer become.

Das erfindungsgemäße aktiv adressierte OLED-Display mit zwei Transistoren je Bildpunkt und einer organischen, Licht emit­ tierenden Schicht ist mit einem Bildspeicher verbunden und dadurch gekennzeichnet, dass es Messeinrichtungen zur Ermitt­ lung der Strom-Spannungs-Kennlinien jedes Bildpunkts und eine Ansteuerelektronik mit einem Speicher zum Abspeichern der Kennlinien der Bildpunkte aufweist, wobei die Auswerteelek­ tronik außerdem mit dem Bildspeicher verbunden ist. Dadurch hat die Auswerteelektronik sowohl Zugriff auf die abgespei­ cherten Kennlinien als auch auf die Bildinformation und kann diese daher entsprechend manipulieren und somit Parameter­ schwankungen der Transistoren oder eine Alterung der Licht emittierenden Schicht ausgleichen.The actively addressed OLED display according to the invention with two Transistors per pixel and an organic light emit layer is connected to an image memory and characterized in that there are measuring devices for determining the current-voltage characteristics of each pixel and one Control electronics with a memory for storing the Has characteristic curves of the pixels, the evaluation elec tronik is also connected to the image memory. Thereby the evaluation electronics both have access to the characteristic curves as well as the image information and can therefore manipulate them accordingly and thus parameters fluctuations in the transistors or aging of the light equalize the emitting layer.

Die Messeinrichtungen können in den Spaltentreibern des Dis­ plays integriert sein und nehmen somit keinen zusätzlichen Platz weg. The measuring devices can be found in the column drivers of the Dis plays be integrated and therefore take no additional Space away.  

Der Bildspeicher kann Teil einer Grafikkarte eines PC oder eines anderen peripheren Gerätes sein.The image memory can be part of a graphics card of a PC or of another peripheral device.

Nachfolgend wird die Funktionsweise eines erfindungsgemäßen Displays anhand der beigefügten schematischen Zeichnung näher erläutert.The mode of operation of an inventive device is described below Displays based on the attached schematic drawing explained.

Die einzige Figur zeigt eine schematische Darstellung eines OLED-Displays (10), dessen matrixförmig angeordnete Bildpunkte jeweils durch zwei Transistoren T1 und T2 adressiert werden, was in der Zeichnung schematisch angedeutet ist. Links und rechts des Displays 10 befinden sich Zeilentreiber 11 und oberhalb und unterhalb des Displays Spaltentreiber 12.The single figure shows a schematic representation of an OLED display ( 10 ), the pixels of which are arranged in matrix form and are each addressed by two transistors T1 and T2, which is indicated schematically in the drawing. There are line drivers 11 to the left and right of the display 10 and column drivers 12 above and below the display.

Das Display 10 erhält seine Bildinformation aus einem Bild­ speicher 13. Dieser ist mit einem Speicher 14 für die Strom- Spannungs-Kennlinien der Bildpunkte des Displays 10 verbunden. Auf diesen Speicher 14 wirkt eine Ansteuerelektronik 15 ein, die außerdem auch mit dem Bildspeicher 13 verbunden ist. Die Ansteuerelektronik 15 erhält von den Spaltentreibern, die mit Messeinrichtungen zur Messung der Strom-Spannungs-Kennlinien der Bildpunkte versehen sind, die Daten über die Strom-Span­ nungs-Kennlinien der einzelnen Punkte und schreibt diese in den Speicher 14. Weichen die Strom-Spannungs-Kennlinien von der Ideal-Kennlinie ab, so wird die im Bildspeicher 13 abge­ legte Bildinformation entsprechend manipuliert, damit auf dem Display dennoch ganzflächig die gleiche Helligkeit entsteht. Dazu ist die Ansteuerelektronik 15 direkt mit dem Bildspeicher 13 verbunden. Dieser gibt seine Information über den Speicher 14 zu den Zeilen- und Spaltentreibern 11, 12 des Displays 10. Die Helligkeit eines Bildpunktes wird dabei maßgeblich vom Strom IOLED bestimmt, der durch den Bildpunkt fließt. Die Span­ nung wird entsprechend nachreguliert.The display 10 receives its image information from an image memory 13. This is connected to a memory 14 for the current-voltage characteristics of the pixels of the display 10 . Control electronics 15 act on this memory 14 and are also connected to the image memory 13 . The control electronics 15 receives the data about the current-voltage characteristics of the individual points from the column drivers, which are provided with measuring devices for measuring the current-voltage characteristics of the pixels, and writes them into the memory 14 . If the current-voltage characteristic curves deviate from the ideal characteristic curve, the image information stored in the image memory 13 is manipulated accordingly, so that the same brightness is nevertheless produced over the entire surface of the display. For this purpose, the control electronics 15 are connected directly to the image memory 13 . The latter gives its information via the memory 14 to the row and column drivers 11 , 12 of the display 10 . The brightness of a pixel is largely determined by the current I OLED that flows through the pixel. The voltage is readjusted accordingly.

Claims (7)

1. Verfahren zur Ansteuerung von aktiv adressierten OLED-Dis­ plays (10) mit zwei Transistoren (T1, T2) je Bildpunkt und einer organischen, Licht emittierenden Schicht, dadurch gekennzeichnet, dass zum Ausgleich der Parameterschwankun­ gen der Transistoren (T1, T2) und/oder der Alterung der organischen Schicht die Strom-Spannungs-Kennlinien jedes Bildpunkts gemessen werden und bei Abweichung der Kenn­ linie von der Idealkennlinie während des Betriebs des Displays (10) die von einem Bildspeicher (13) kommende, durch das Display (10) anzuzeigende Bildinformation durch eine Ansteuerelektronik (15) derart manipuliert wird, dass die Helligkeit des vom Display (10) angezeigten Bildes ganzflächig dem gewünschten Wert entspricht.1. A method for controlling actively addressed OLED displays ( 10 ) with two transistors (T1, T2) per pixel and an organic, light-emitting layer, characterized in that to compensate for the parameter fluctuations of the transistors (T1, T2) and / or the aging of the organic layer, the current-voltage characteristic curves of each pixel are measured and, if the characteristic curve deviates from the ideal characteristic curve during operation of the display ( 10 ), the one coming from an image memory ( 13 ), to be indicated by the display ( 10 ) Image information is manipulated by control electronics ( 15 ) such that the brightness of the image shown by the display ( 10 ) corresponds to the desired value over the entire surface. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass zur Ermittlung der Strom-Spannungs-Kennlinien der Bild­ punkte ein Eichbild vom Bildspeicher (13) in das Display (10) eingeschrieben wird und die dabei auftretenden Ströme und Spannungen in jedem Bildpunkt gemessen werden.2. The method according to claim 1, characterized in that to determine the current-voltage characteristics of the pixels, a calibration image from the image memory ( 13 ) is written into the display ( 10 ) and the currents and voltages that occur are measured in each pixel. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Strom-Spannungs-Kennlinien der Bildpunkte in einem Speicher (14) abgelegt werden, der mit der Ansteuer­ elektronik (15) verbunden ist. 3. The method according to claim 1 or 2, characterized in that the current-voltage characteristics of the pixels are stored in a memory ( 14 ) which is connected to the control electronics ( 15 ). 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch ge­ kennzeichnet, dass die Ermittlung der Strom-Spannungs- Kennlinien der Bildpunkte während des Betriebs des Dis­ plays (10) durchgeführt wird.4. The method according to any one of claims 1 to 3, characterized in that the determination of the current-voltage characteristics of the pixels is carried out during the operation of the display ( 10 ). 5. Aktiv adressiertes OLED-Display (10) mit zwei Transistoren (T1, T2) je Bildpunkt und einer organischen, Licht emit­ tierenden Schicht, das mit einem Bildspeicher (13) ver­ bunden ist, dadurch gekennzeichnet, dass es Messseinrich­ tungen zur Ermittlung der Strom-Spannungs-Kennlinien jedes Bildpunkts und eine Ansteuerelektronik (15) mit einem Speicher (14) zum Abspeichern der Kennlinien der Bildpunk­ te aufweist, wobei die Ansteuerelektronik (15) außerdem mit dem Bildspeicher (13) verbunden ist.5. Active addressed OLED display ( 10 ) with two transistors (T1, T2) per pixel and an organic, light-emitting layer, which is connected to an image memory ( 13 ), characterized in that it has measuring devices for determining the Current-voltage characteristics of each pixel and control electronics ( 15 ) having a memory ( 14 ) for storing the characteristics of the pixels te, the control electronics ( 15 ) is also connected to the image memory ( 13 ). 6. OLED-Display nach Anspruch 5, dadurch gekennzeichnet, dass die Messeinrichtungen in den Spaltentreibern (12) des Dis­ plays (10) integriert sind.6. OLED display according to claim 5, characterized in that the measuring devices are integrated in the column drivers ( 12 ) of the display ( 10 ). 7. OLED-Display nach Anspruch 5 oder 6, dadurch gekennzeich­ net, dass der Bildspeicher (13) Teil einer Grafikkarte eines PC ist.7. OLED display according to claim 5 or 6, characterized in that the image memory ( 13 ) is part of a graphics card of a PC.
DE2000109204 2000-02-26 2000-02-26 Process for controlling actively addressed OLED displays Ceased DE10009204A1 (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003058594A1 (en) * 2001-12-28 2003-07-17 Pioneer Corporation Panel display driving device and driving method
WO2003034389A3 (en) * 2001-10-19 2004-03-18 Clare Micronix Integrated Syst System and method for providing pulse amplitude modulation for oled display drivers
DE10254511A1 (en) * 2002-11-22 2004-06-17 Universität Stuttgart Active matrix driving circuit
US6943761B2 (en) 2001-05-09 2005-09-13 Clare Micronix Integrated Systems, Inc. System for providing pulse amplitude modulation for OLED display drivers
DE102004045871A1 (en) * 2004-09-20 2006-04-06 Novaled Gmbh Method and circuit arrangement for aging compensation of organic light emitting diodes
US7540978B2 (en) 2004-08-05 2009-06-02 Novaled Ag Use of an organic matrix material for producing an organic semiconductor material, organic semiconductor material and electronic component
US7598519B2 (en) 2005-05-27 2009-10-06 Novaled Ag Transparent light-emitting component
DE202004021748U1 (en) 2003-08-29 2010-09-23 BSH Bosch und Siemens Hausgeräte GmbH Refrigeration unit with OLED display
CN1703731B (en) * 2001-12-28 2012-01-04 先锋株式会社 Flat panel display driving device and driving method
CN110619845A (en) * 2013-12-06 2019-12-27 伊格尼斯创新公司 Correction of localized phenomena in an image array

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6943761B2 (en) 2001-05-09 2005-09-13 Clare Micronix Integrated Systems, Inc. System for providing pulse amplitude modulation for OLED display drivers
US6963321B2 (en) 2001-05-09 2005-11-08 Clare Micronix Integrated Systems, Inc. Method of providing pulse amplitude modulation for OLED display drivers
WO2003034389A3 (en) * 2001-10-19 2004-03-18 Clare Micronix Integrated Syst System and method for providing pulse amplitude modulation for oled display drivers
US7274363B2 (en) 2001-12-28 2007-09-25 Pioneer Corporation Panel display driving device and driving method
CN1703731B (en) * 2001-12-28 2012-01-04 先锋株式会社 Flat panel display driving device and driving method
WO2003058594A1 (en) * 2001-12-28 2003-07-17 Pioneer Corporation Panel display driving device and driving method
DE10254511B4 (en) * 2002-11-22 2008-06-05 Universität Stuttgart Active matrix driving circuit
US7432891B2 (en) 2002-11-22 2008-10-07 Universitaet Stuttgart Active matrix drive circuit
DE10254511A1 (en) * 2002-11-22 2004-06-17 Universität Stuttgart Active matrix driving circuit
DE202004021748U1 (en) 2003-08-29 2010-09-23 BSH Bosch und Siemens Hausgeräte GmbH Refrigeration unit with OLED display
US8079225B2 (en) 2003-08-29 2011-12-20 Bsh Bosch Und Siemens Hausgeraete Gmbh Refrigerating appliance provided with an OLED display
US7540978B2 (en) 2004-08-05 2009-06-02 Novaled Ag Use of an organic matrix material for producing an organic semiconductor material, organic semiconductor material and electronic component
DE102004045871B4 (en) * 2004-09-20 2006-11-23 Novaled Gmbh Method and circuit arrangement for aging compensation of organic light emitting diodes
DE102004045871A1 (en) * 2004-09-20 2006-04-06 Novaled Gmbh Method and circuit arrangement for aging compensation of organic light emitting diodes
US7656370B2 (en) 2004-09-20 2010-02-02 Novaled Ag Method and circuit arrangement for the ageing compensation of an organic light-emitting diode and circuit arrangement
US7598519B2 (en) 2005-05-27 2009-10-06 Novaled Ag Transparent light-emitting component
CN110619845A (en) * 2013-12-06 2019-12-27 伊格尼斯创新公司 Correction of localized phenomena in an image array
CN110619845B (en) * 2013-12-06 2023-10-31 伊格尼斯创新公司 Correction of localized phenomena in an image array

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