EP1094435B1 - Procédé et appareil de commande d'un panneau d'affichage à plasma - Google Patents
Procédé et appareil de commande d'un panneau d'affichage à plasma Download PDFInfo
- 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluorescent
- delay
- control
- cells
- exhibiting
- 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.)
- Expired - Lifetime
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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
- G09G3/28—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.
Landscapes
- 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)
Claims (2)
- Procédé de commande d'un écran plasma, dans lequel, à chaque pixel correspondent plusieurs cellules fluorescentes comprenant chacune différentes couches fluorescentes et dans lequel, à l'aide d'une électronique de contrôle, permet de commander des électrodes des cellules fluorescentes, les tensions de commande correspondant à un pixel, pour les électrodes des cellules fluorescentes, sont retardées les unes par rapport aux autres pour compenser les différents temps de réponse des différentes matières fluorescentes des cellules fluorescentes, trois cellules fluorescentes étant assignées à un pixel de l'écran plasma, la première comprenant une couche fluorescente rouge, la deuxième une verte et la troisième une bleue, la tension de commande correspondant à la couche fluorescente bleue étant retardée d'une première valeur de temporisation par rapport à la tension de commande de la couche fluorescente verte et la tension de commande correspondant à la couche fluorescente rouge étant retardée d'une deuxième valeur de temporisation par rapport à la tension de commande correspondant à la couche fluorescente verte et la première valeur de temporisation étant supérieure à la deuxième valeur de temporisation, caractérisé en ce que, dans chacune des lignes servant à commander les électrodes des cellules fluorescentes, sont prévus, pour chacune des cellules fluorescentes, deux organes de temporisation disposés en parallèle, alimentés à l'entrée par un signal de commande et reliés à la sortie à un circuit de superposition, un signal de commande temporisé étant généré à la sortie du circuit de superposition, ce signal servant à commander la cellule fluorescente correspondante, le premier organe de temporisation servant à temporiser le flanc montant du signal et le deuxième organe de temporisation servant à temporiser le flanc descendant du signal de commande.
- Dispositif de commande d'un écran plasma, dans lequel, à chaque pixel correspondent trois cellules fluorescentes, la première comprenant une couche fluorescente rouge, la deuxième une verte et la troisième une bleue, avec une électronique de commande permettant de générer des tensions de commande pour les électrodes des trois cellules fluorescentes, l'électronique de commande retardant les tensions de commande pour les électrodes des cellules fluorescentes correspondant à un pixel les unes par rapport aux autres afin de compenser les différents temps de réponse des différentes matières fluorescentes, caractérisé en ce que la temporisation est générée par deux organes de temporisation parallèles dans le trajet du signal vers les différentes couches fluorescentes, les deux organes de temporisation étant alimentés à l'entrée par un signal de commande et délivrant à la sortie un signal de commande servant à commander la cellule fluorescente correspondante, le premier organe de temporisation servant à temporiser le flanc montant du signal et le deuxième organe de temporisation servant à temporiser le flanc descendant du signal de commande.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19950432A DE19950432A1 (de) | 1999-10-19 | 1999-10-19 | Verfahren und Vorrichtung zur Ansteuerung eines Plasmadisplays |
DE19950432 | 1999-10-19 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1094435A2 EP1094435A2 (fr) | 2001-04-25 |
EP1094435A3 EP1094435A3 (fr) | 2003-05-02 |
EP1094435B1 true EP1094435B1 (fr) | 2012-05-02 |
Family
ID=7926217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00122113A Expired - Lifetime EP1094435B1 (fr) | 1999-10-19 | 2000-10-12 | Procédé et appareil de commande d'un panneau d'affichage à plasma |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1094435B1 (fr) |
AT (1) | ATE556402T1 (fr) |
DE (1) | DE19950432A1 (fr) |
ES (1) | ES2387382T3 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10160841B4 (de) * | 2001-12-12 | 2005-10-06 | Grundig Multimedia B.V. | Verfahren und Vorrichtung zur Kompensation der unterschiedlichen Anstiegs- und Abfallzeiten der Leuchtstoffe in einem Plasmadisplay |
KR100898292B1 (ko) * | 2007-11-02 | 2009-05-18 | 삼성에스디아이 주식회사 | 표시 장치 및 그 구동 방법 |
DE102007000888A1 (de) | 2007-11-12 | 2009-05-14 | Bundesdruckerei Gmbh | Dokument mit einer integrierten Anzeigevorrichtung |
DE102007000890B4 (de) * | 2007-11-12 | 2014-06-05 | Bundesdruckerei Gmbh | Dokument mit einer integrierten Anzeigevorrichtung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5465062A (en) * | 1990-04-30 | 1995-11-07 | Rohm Corporation | Transition detector circuit |
EP0837442A1 (fr) * | 1996-10-21 | 1998-04-22 | Nec Corporation | Dispositif d'affichage à plasma en couleurs et son procédé de commande |
JPH10187090A (ja) * | 1996-12-19 | 1998-07-14 | Nec Corp | カラープラズマディスプレイパネル |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04100487A (ja) * | 1990-08-20 | 1992-04-02 | Ikegami Tsushinki Co Ltd | 輪郭補正方法 |
JP2982575B2 (ja) * | 1993-08-26 | 1999-11-22 | 株式会社富士通ゼネラル | Pdp駆動回路 |
EP0665696B1 (fr) * | 1994-01-31 | 2001-08-22 | Hitachi Denshi Kabushiki Kaisha | Caméra TV avec circuit de traitement de signal vidéo numérique |
JPH07322176A (ja) * | 1994-05-26 | 1995-12-08 | Fujitsu General Ltd | 電子ディスプレイの映像表示処理方法およびその装置 |
DE69839542D1 (de) * | 1997-08-07 | 2008-07-10 | Hitachi Ltd | Farbbildanzeigeeinrichtung und -verfahren |
FR2772502B1 (fr) * | 1997-12-15 | 2000-01-21 | Thomson Multimedia Sa | Procede de compensation des differences de remanence des luminophores dans un ecran de visualisation d'images |
-
1999
- 1999-10-19 DE DE19950432A patent/DE19950432A1/de not_active Withdrawn
-
2000
- 2000-10-12 ES ES00122113T patent/ES2387382T3/es not_active Expired - Lifetime
- 2000-10-12 EP EP00122113A patent/EP1094435B1/fr not_active Expired - Lifetime
- 2000-10-12 AT AT00122113T patent/ATE556402T1/de active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5465062A (en) * | 1990-04-30 | 1995-11-07 | Rohm Corporation | Transition detector circuit |
EP0837442A1 (fr) * | 1996-10-21 | 1998-04-22 | Nec Corporation | Dispositif d'affichage à plasma en couleurs et son procédé de commande |
JPH10187090A (ja) * | 1996-12-19 | 1998-07-14 | Nec Corp | カラープラズマディスプレイパネル |
US6097365A (en) * | 1996-12-19 | 2000-08-01 | Nec Corporation | Color plasma display panel having a plurality of data drivers |
Also Published As
Publication number | Publication date |
---|---|
EP1094435A3 (fr) | 2003-05-02 |
ES2387382T3 (es) | 2012-09-21 |
DE19950432A1 (de) | 2001-07-12 |
EP1094435A2 (fr) | 2001-04-25 |
ATE556402T1 (de) | 2012-05-15 |
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