EP1094435B1 - Method and apparatus for driving a plasma display panel - Google Patents

Method and apparatus for driving a plasma display panel Download PDF

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Publication number
EP1094435B1
EP1094435B1 EP00122113A EP00122113A EP1094435B1 EP 1094435 B1 EP1094435 B1 EP 1094435B1 EP 00122113 A EP00122113 A EP 00122113A EP 00122113 A EP00122113 A EP 00122113A EP 1094435 B1 EP1094435 B1 EP 1094435B1
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Prior art keywords
fluorescent
delay
control
cells
exhibiting
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EP00122113A
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German (de)
French (fr)
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EP1094435A2 (en
EP1094435A3 (en
Inventor
Udo Fischbeck
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Grundig Multimedia BV
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Grundig Multimedia BV
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    • 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
    • G09G3/28—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 luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—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 luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/291—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 luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
    • G09G3/294—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 luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for lighting or sustain discharge
    • 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
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • 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
    • G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to the screen

Definitions

  • the invention relates to a method and apparatus for controlling a plasma display.
  • each pixel of the display is assigned a plurality of phosphor cells, each of which has different phosphor layers.
  • a control electronics is present, which generates in each case a drive voltage for the electronics of the phosphor cells, wherein the one pixel associated drive voltages for the electrodes of the phosphor sites to compensate for different response times of the different phosphors of the phosphor cells are delayed relative to each other.
  • EP-A-0924684 a further control option for a plasma display is disclosed. In this case, however, no temporal relative delays in the initiation of the phosphor cells are made. From this it is only known that the different phosphor cells with different phosphors have different response and Abmony practitioner.
  • each pixel is assigned a red, a green, and a blue phosphor layer, each of which is part of a phosphor cell.
  • a drive voltage can be applied to the electrodes of each cell, by which the respective cell can be initialized to bring the respective phosphor layer to light up.
  • the invention has the object to show a way how the quality of the signals displayed on a plasma display can be improved.
  • the advantages of the invention are in particular that relative by the claimed time delay of the drive voltages for the different colored phosphor layers of the plasma display each other whose different response times are compensated. This leads to a clearly visible narrowing of the color fringes occurring in moving images and thus to a significant improvement in the quality of the image signals displayed on the plasma display.
  • FIG. 1 Fig. 9 is a timing chart illustrating the color fringes of moving pictures occurring in the prior art.
  • FIG. 1 For example, a video input signal representing a black and white jump is shown. From the three diagrams drawn below the black-and-white jump, the response of the red, green and blue phosphor can be seen.
  • the blue phosphor has the shortest response time and also the steepest rising edge.
  • the red phosphor has a longer response time than the blue phosphor and also has a longer rising edge.
  • the green phosphor has the largest response time as well as the longest leading edge.
  • the blue phosphor is the most responsive and has the shortest fall time.
  • the red phosphor responds to the blue phosphor and has delayed too a longer fall time than the blue phosphor.
  • the green phosphor responds even later than the red phosphor and also has the largest fall time.
  • FIG. 2 shows a timing diagram for illustrating the inventively reduced color fringes and an arrangement for delaying the R, G, B signals generated by the control electronics.
  • the video input signal corresponding to a black and white jump is shown.
  • the three diagrams below the black-and-white jump show the drive signals for the respective phosphor cells which are delayed relative to one another according to the invention.
  • the drive signal associated with the blue phosphor cell has - as a comparison with the associated drive signal according to FIG. 1 shows - the largest delay value, while the drive signal associated with the red phosphor cell in comparison to the associated drive signal according to FIG. 1 only slightly delayed.
  • the said delay values are chosen such that the different response of the different colored phosphors is compensated.
  • FIG. 2 shows an embodiment of an arrangement by means of which the above-described relative delays of the drive signals can be achieved.
  • This arrangement is provided between the control electronics, which generates the drive voltages for the different colored phosphor cells at the same time, and the plasma display in the path of the R, G, B signals.
  • each of said channels two mutually parallel delay elements are provided, which are acted on the input side with the respective drive signal and the output side connected to a superposition circuit.
  • a superposition circuit At the output of the respective superposition circuit is then each a delayed drive signal available, the time course on the right side of FIG. 2 is illustrated.
  • the respective upper delay element serves for delaying the rising edge of the signal and the respective lower delay element for delaying the falling edge of the drive signal.
  • the drive signals for the different colored phosphor cells are generated by the drive electronics themselves so that they have the externally generated externally generated relative delays.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)

Abstract

The method involves associating several fluorescent cells with different fluorescent layers with each pixel and generating a drive voltage for the electrodes of each cell with drive electronics. The drive voltages associated with a pixel for the fluorescent cells are delayed relative to each other to compensate for the different response times of the different fluorescent materials. A cell has red, green and blue fluorescent materials in three fluorescent cells. Independent claims are also included for the following: an arrangement for driving a plasma display.

Description

Die Erfindung betrifft ein Verfahren und Vorrichtung zur Ansteuerung eines Plasmadisplays.The invention relates to a method and apparatus for controlling a plasma display.

Aus JP-10187090A und EP-A-0837442 ist ein Verfahren zur Ansteuerung eines Plasmadisplays offenbart. Bei diesem Verfahren werden jedem Pixel des Displays mehrere Leuchtstoffzellen zugeordnet, welche jeweils unterschiedliche Leuchtstoffschichten aufweisen. Im Weiteren ist eine Ansteuerelektronik vorhanden, welche jeweils eine Ansteuerspannung für die Elektronik der Leuchtstoffzellen erzeugt, wobei die einem Pixel zugehörigen Ansteuerspannungen für die Elektroden der Leuchtstoffstellen zur Kompensation unterschiedlicher Ansprechzeiten der verschiedenen Leuchtstoffe der Leuchtstoffzellen relativ zueinander verzögert werden.Out JP-10187090A and EP-A-0837442 a method for driving a plasma display is disclosed. In this method, each pixel of the display is assigned a plurality of phosphor cells, each of which has different phosphor layers. In addition, a control electronics is present, which generates in each case a drive voltage for the electronics of the phosphor cells, wherein the one pixel associated drive voltages for the electrodes of the phosphor sites to compensate for different response times of the different phosphors of the phosphor cells are delayed relative to each other.

Aus EP-A-0924684 ist eine weitere Ansteuermöglichkeit für ein Plasmadisplay offenbart. Hierbei werden jedoch keine zeitlichen relativen Verzögerungen bei der Initiierung der Leuchtstoffzellen vorgenommen. Hieraus ist lediglich bekannt, dass die verschiedenen Leuchtstoffzellen mit unterschiedlichen Leuchtstoffen unterschiedliche Ansprech- und Absprechzeiten haben.Out EP-A-0924684 a further control option for a plasma display is disclosed. In this case, however, no temporal relative delays in the initiation of the phosphor cells are made. From this it is only known that the different phosphor cells with different phosphors have different response and Absprechzeiten.

In der Zeitschrift RFE, Heft 2, 1997, S. 18-20 , und der Zeitschrift Fernseh- und Kino-Technik, Heft 11, 1998 sind Plasmadisplays und deren grundsätzliche Funktionsweise beschrieben. Bei diesen Plasmadisplays ist jedem Pixel eine rote, eine grüne und eine blaue Phosphorschicht zugeordnet, die jeweils Bestandteil einer Leuchtstoffzelle ist. Mittels einer Ansteuerelektronik kann an die Elektroden jeder Zelle eine Ansteuerspannung angelegt werden, durch welche die jeweilige Zelle initialisierbar ist, um die jeweilige Phosphorschicht zum Leuchten zu bringen.In the journal RFE, Issue 2, 1997, pp. 18-20 , and the magazine television and cinema technique, number 11, 1998 plasma displays and their basic functionality are described. In these plasma displays, each pixel is assigned a red, a green, and a blue phosphor layer, each of which is part of a phosphor cell. By means of a control electronics, a drive voltage can be applied to the electrodes of each cell, by which the respective cell can be initialized to bring the respective phosphor layer to light up.

Bei derartigen Plasmadisplays ist nachteilig, daß insbesondere beim Vorliegen von bewegten Bildern Farbsäume auftreten, welche die Qualität der auf dem Display dargestellten Bilder beeinträchtigen.In the case of such plasma displays, it is disadvantageous that, especially in the presence of moving images, color fringes occur which impair the quality of the images displayed on the display.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, einen Weg aufzuzeigen, wie die Qualität der auf einem Plasmadisplay dargestellten Signale verbessert werden kann.Based on this prior art, the invention has the object to show a way how the quality of the signals displayed on a plasma display can be improved.

Diese Aufgabe wird durch ein Verfahren mit den in Anspruch 1 und eine Vorrichtung mit den in Anspruch 2 angegebenen Merkmalen gelöst.This object is achieved by a method comprising the features specified in claim 1 and a device having the features specified in claim 2.

Die Vorteile der Erfindung bestehen insbesondere darin, daß durch die beanspruchte zeitliche Verzögerung der Ansteuerspannungen für die verschiedenfarbigen Leuchtstoffschichten des Plasmadisplays relativ zueinander deren unterschiedliche Ansprechzeiten kompensiert werden. Dies führt zu einer deutlich sichtbaren Verschmälerung der bei bewegten Bildern auftretenden Farbsäume und damit zu einer wesentlichen Verbesserung der Qualität der auf dem Plasmadisplay dargestellten Bildsignale.The advantages of the invention are in particular that relative by the claimed time delay of the drive voltages for the different colored phosphor layers of the plasma display each other whose different response times are compensated. This leads to a clearly visible narrowing of the color fringes occurring in moving images and thus to a significant improvement in the quality of the image signals displayed on the plasma display.

Nachfolgend wird die Erfindung anhand der Figuren beispielhaft erläutert. Es zeigt:

  • FIG 1 ein Zeitdiagramm zur Veranschaulichung der beim Stand der Technik auftretenden Farbsäume bei bewegten Bildern und
  • FIG 2 ein Zeitdiagramm zur Veranschaulichung der erfindungsgemäß reduzierten Farbsäume und eine Anordnung zur Verzögerung der von der Ansteuerelektronik erzeugten R,G,B-Signale.
The invention will be explained by way of example with reference to the figures. It shows:
  • FIG. 1 a time chart illustrating the occurring in the prior art color fringes in moving images and
  • FIG. 2 a timing diagram illustrating the inventively reduced color fringes and an arrangement for delaying the generated by the control electronics R, G, B signals.

Die Figur 1 zeigt ein Zeitdiagramm zur Veranschaulichung der beim Stand der Technik auftretenden Farbsäume bei bewegten Bildern.The FIG. 1 Fig. 9 is a timing chart illustrating the color fringes of moving pictures occurring in the prior art.

In der obersten Darstellung in Figur 1 ist ein einen Schwarz-Weiß-Sprung repräsentierendes Video-Eingangssignal gezeigt. Aus den drei unterhalb des Schwarz-Weiß-Sprunges gezeichneten Diagrammen ist das Ansprechverhalten des roten, grünen und blauen Leuchtstoffes ersichtlich. Der blaue Leuchtstoff weist die kürzeste Ansprechzeit und auch die steilste Anstiegsflanke auf. Der rote Leuchtstoff hat eine größere Ansprechzeit als der blaue Leuchtstoff und auch eine längere Anstiegsflanke. Der grüne Leuchtstoff weist die größte Ansprechzeit und auch die längste Anstiegsflanke auf.In the uppermost illustration in FIG. 1 For example, a video input signal representing a black and white jump is shown. From the three diagrams drawn below the black-and-white jump, the response of the red, green and blue phosphor can be seen. The blue phosphor has the shortest response time and also the steepest rising edge. The red phosphor has a longer response time than the blue phosphor and also has a longer rising edge. The green phosphor has the largest response time as well as the longest leading edge.

Auch an der Rückseite des dargestellten Impulses ist das unterschiedliche Ansprechverhalten der verschiedenfarbigen Leuchtstoffe ersichtlich. Der blaue Leuchtstoff spricht am ehesten an und hat die kürzeste Abfallzeit. Der rote Leuchtstoff reagiert gegenüber dem blauen Leuchtstoff verzögert und hat auch eine längere Abfallzeit als der blaue Leuchtstoff. Der grüne Leuchtstoff spricht noch später als der rote Leuchtstoff an und weist auch die größte Abfallzeit auf.Also on the back of the pulse shown, the different response of different colored phosphors is visible. The blue phosphor is the most responsive and has the shortest fall time. The red phosphor responds to the blue phosphor and has delayed too a longer fall time than the blue phosphor. The green phosphor responds even later than the red phosphor and also has the largest fall time.

Dies führt insgesamt dazu, daß im Bereich der Signalflanken im am Plasmadisplay dargestellten bewegten Bild vergleichsweise breite Farbsäume auftreten, welche die Bildqualität stark beeinträchtigen. Dies geht aus der untersten Darstellung in Figur 1 hervor, in der die auftretenden Farbsäume veranschaulicht sind.Overall, this results in comparatively wide color fringes occurring in the area of the signal flanks in the moving image displayed on the plasma display, which severely impair the image quality. This goes from the lowest representation in FIG. 1 in which the occurring color fringes are illustrated.

Die Figur 2 zeigt ein Zeitdiagramm zur Veranschaulichung der erfindungsgemäß reduzierten Farbsäume und eine Anordnung zur Verzögerung der von der Ansteuerelektronik erzeugten R,G,B-Signale.The FIG. 2 shows a timing diagram for illustrating the inventively reduced color fringes and an arrangement for delaying the R, G, B signals generated by the control electronics.

In der obersten Zeile von Figur 2 ist wiederum das einem Schwarz-Weiß-Sprung entsprechende Video-Eingangssignal dargestellt. Die drei Diagramme unterhalb des Schwarz-Weiß-Sprunges zeigen die erfindungsgemäß relativ zueinander verzögerten Ansteuersignale für die jeweiligen Leuchtstoffzellen. Das der blauen Leuchtstoffzelle zugeordnete Ansteuersignal weist dabei - wie ein Vergleich mit dem zugehörigen Ansteuersignal gemäß Figur 1 zeigt - den größten Verzögerungswert auf, während das der roten Leuchtstoffzelle zugeordnete Ansteuersignal im Vergleich zum zugehörigen Ansteuersignal gemäß Figur 1 nur geringfügig verzögert wird.In the top line of FIG. 2 again, the video input signal corresponding to a black and white jump is shown. The three diagrams below the black-and-white jump show the drive signals for the respective phosphor cells which are delayed relative to one another according to the invention. The drive signal associated with the blue phosphor cell has - as a comparison with the associated drive signal according to FIG. 1 shows - the largest delay value, while the drive signal associated with the red phosphor cell in comparison to the associated drive signal according to FIG. 1 only slightly delayed.

Die genannten Verzögerungswerte sind derart gewählt, daß das unterschiedliche Ansprechverhalten der verschiedenfarbigen Leuchtstoffe kompensiert wird.The said delay values are chosen such that the different response of the different colored phosphors is compensated.

Wie aus der untersten Darstellungszeile von Figur 2 hervorgeht, treten aufgrund der zeitlich aneinander angepaßten Ansteuersignale für die verschiedenfarbigen Leuchtstoffzellen im wiedergegebenen Bild nur noch schmale Farbsäume auf, die das menschliche Auge kaum mehr störend empfindet. Dies entspricht einer wesentlichen Verbesserung der Qualität des auf dem Plasmadisplay dargestellten Bildes.As from the bottom line of FIG. 2 shows, due to the timing matched to each other driving signals for the different colored phosphor cells in the reproduced image only narrow fringing, which the human eye hardly disturbs. This corresponds to a substantial improvement in the quality of the image displayed on the plasma display.

Auf der linken Seite in Figur 2 ist ein Ausführungsbeispiel für eine Anordnung aufgezeigt, mittels derer die vorstehend beschriebenen relativen Verzögerungen der Ansteuersignale erreicht werden können.On the left in FIG. 2 shows an embodiment of an arrangement by means of which the above-described relative delays of the drive signals can be achieved.

Diese Anordnung ist zwischen der Ansteuerelektronik, die die Ansteuerspannungen für die verschiedenfarbigen Leuchtstoffzellen zeitgleich erzeugt, und dem Plasmadisplay im Weg der R,G,B-Signale vorgesehen.This arrangement is provided between the control electronics, which generates the drive voltages for the different colored phosphor cells at the same time, and the plasma display in the path of the R, G, B signals.

In jedem der genannten Kanäle sind zwei parallel zueinander angeordnete Verzögerungsglieder vorgesehen, die eingangsseitig mit dem jeweiligen Ansteuersignal beaufschlagt werden und ausgangsseitig mit einer Überlagerungsschaltung verbunden sind. Am Ausgang der jeweiligen Überlagerungsschaltung steht dann jeweils ein verzögertes Ansteuersignal zur Verfügung, dessen zeitlicher Verlauf auf der rechten Seite der Figur 2 veranschaulicht ist. Das jeweils obere Verzögerungsglied dient dabei zur Verzögerung der Anstiegsflanke des Signals und das jeweils untere Verzögerungsglied zur Verzögerung der abfallenden Flanke des Ansteuersignals.In each of said channels two mutually parallel delay elements are provided, which are acted on the input side with the respective drive signal and the output side connected to a superposition circuit. At the output of the respective superposition circuit is then each a delayed drive signal available, the time course on the right side of FIG. 2 is illustrated. The respective upper delay element serves for delaying the rising edge of the signal and the respective lower delay element for delaying the falling edge of the drive signal.

Alternativ zu der in der Figur 2 dargestellten Anordnung zur Verzögerung der Ansteuersignale besteht auch die Möglichkeit, die jeweils notwendige Verzögerung jedes der Ansteuersignale mittels der Ansteuerelektronik selbst zu realisieren. Bei dieser alternativen Ausführungsform der Erfindung werden die Ansteuersignale für die verschiedenfarbigen Leuchtstoffzellen von der Ansteuerelektronik selbst so generiert, daß sie die oben extern erzeugten relativen Verzögerungen aufweisen.Alternatively to the one in the FIG. 2 arrangement shown for delaying the drive signals is also possible to realize each necessary delay each of the drive signals by means of the control electronics themselves. In this alternative embodiment of the invention, the drive signals for the different colored phosphor cells are generated by the drive electronics themselves so that they have the externally generated externally generated relative delays.

Claims (2)

  1. A method for controlling a plasma display in which each pixel of the display has several fluorescent cells assigned to it, said fluorescent cells each exhibiting differing fluorescent layers and in which by means of control electronics control is generated for the electrodes of the fluorescent cells, wherein the control voltages associated with a pixel for the electrodes of the fluorescent cells for the compensation of differing response times of the various fluorescent materials of the fluorescent cells are delayed relative to one another, wherein three fluorescent cells are assigned to a pixel of the plasma display, the first exhibiting a red fluorescent layer, the second exhibiting a green fluorescent layer and the third exhibiting a blue fluorescent layer, wherein the control voltage associated with the blue fluorescent layer is delayed by a first delay value relative to the control voltage associated with the green fluorescent layer and the control voltage associated with the red fluorescent layer is delayed by a second delay value relative to the control voltage associated with the green fluorescent layer and the first delay value is greater than the second delay value,
    characterized in that
    in each line serving the purpose of control of the electrodes of the fluorescent cells two delay elements arranged parallel to one another are provided for each of the different fluorescent cells, said delay elements receiving on the input side a respective control signal and being connected on the output side to a superposition circuit, wherein on the output of the respective superposition circuit a delayed control signal is made available which serves the purpose of control of the respective fluorescent cell, wherein the respective first delay element serves the purpose of the delay of the rising edge of the signal and the respective second delay element serves the purpose of the delay of the declining edge of the control signal.
  2. A device for controlling a plasma display in which each pixel of the display has three fluorescent cells assigned to it, the first exhibiting a red fluorescent layer, the second exhibiting a green fluorescent layer and the third exhibiting a blue fluorescent layer, with a control electronics for generating control voltages for the electrodes of the three fluorescent cells, wherein the control electronics delays the control voltages associated with a pixel for the electrodes of the fluorescent cells for the compensation of differing response times of the respective fluorescent materials relative to one another, characterized in that the delay can be generated by two delay elements arranged parallel to one another in the signal path to the individual fluorescent layers, wherein the two delay elements receive on the input side a respective control signal and are connected on the output side to a superposition circuit, wherein the superposition circuit has a delayed control signal on the output which serves the purpose of control of the respective fluorescent cell, wherein the respective first delay element serves the purpose of the delay of the rising edge of the signal and the respective second delay element serves the purpose of the delay of the declining edge of the control signal.
EP00122113A 1999-10-19 2000-10-12 Method and apparatus for driving a plasma display panel Expired - Lifetime EP1094435B1 (en)

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DE19950432A DE19950432A1 (en) 1999-10-19 1999-10-19 Method and device for controlling a plasma display

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EP1094435A3 EP1094435A3 (en) 2003-05-02
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KR100898292B1 (en) * 2007-11-02 2009-05-18 삼성에스디아이 주식회사 Display device, and driving method thereof
DE102007000888A1 (en) 2007-11-12 2009-05-14 Bundesdruckerei Gmbh Document with an integrated display device
DE102007000890B4 (en) * 2007-11-12 2014-06-05 Bundesdruckerei Gmbh Document with an integrated display device

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EP1094435A2 (en) 2001-04-25
DE19950432A1 (en) 2001-07-12
ES2387382T3 (en) 2012-09-21
EP1094435A3 (en) 2003-05-02
ATE556402T1 (en) 2012-05-15

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