WO2007004298A1 - Procédé et dispositif de commande pour commander un affichage à plasma - Google Patents

Procédé et dispositif de commande pour commander un affichage à plasma Download PDF

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Publication number
WO2007004298A1
WO2007004298A1 PCT/JP2005/012476 JP2005012476W WO2007004298A1 WO 2007004298 A1 WO2007004298 A1 WO 2007004298A1 JP 2005012476 W JP2005012476 W JP 2005012476W WO 2007004298 A1 WO2007004298 A1 WO 2007004298A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
plasma display
sustain
timing
display panel
Prior art date
Application number
PCT/JP2005/012476
Other languages
English (en)
Japanese (ja)
Inventor
Akihiro Takagi
Takashi Sasaki
Akira Otsuka
Tetsuya Sakamoto
Original Assignee
Fujitsu Hitachi Plasma Display Limited
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 Fujitsu Hitachi Plasma Display Limited filed Critical Fujitsu Hitachi Plasma Display Limited
Priority to JP2007523315A priority Critical patent/JPWO2007004298A1/ja
Priority to CN200580049665.0A priority patent/CN101167115A/zh
Priority to PCT/JP2005/012476 priority patent/WO2007004298A1/fr
Publication of WO2007004298A1 publication Critical patent/WO2007004298A1/fr

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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
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202—Addressing of scan or signal lines
    • G09G2310/0213—Addressing of scan or signal lines controlling the sequence of the scanning lines with respect to the patterns to be displayed, e.g. to save power
    • 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
    • G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
    • G09G3/2965—Driving circuits for producing the waveforms applied to the driving electrodes using inductors for energy recovery

Definitions

  • the present invention relates to a plasma display driving method and apparatus. More specifically,
  • the lighting of the display line is stopped.
  • a method and apparatus for driving a plasma display in which there is no instability in the step or operating margin.
  • a plurality of X electrodes and a plurality of Y electrodes are alternately arranged adjacent to each other in the horizontal direction, and address electrodes are arranged in the vertical direction to form a matrix.
  • address electrodes are arranged in the vertical direction to form a matrix.
  • FIG. 8 shows a schematic diagram of a panel and a driving circuit of a conventional plasma display device
  • FIG. 9 shows a structure of a plasma display panel and a subfield configuration of driving signals.
  • the plasma display device includes a panel 3 of a plasma display, an X drive circuit 4, a Y drive circuit 5, an address drive circuit 6, and a control circuit 7.
  • X drive circuit 4 applies drive waveforms to multiple X electrodes 11 on panel 3
  • Y drive circuit 5 applies drive waveforms to multiple Y electrodes 12 on panel 3
  • address drive circuit 6 applies drive waveforms to multiple address electrodes 15 on panel 3.
  • the control circuit 7 controls the whole.
  • a plurality of X electrodes 11 and Y electrodes 12, a dielectric layer 13 and a protective layer 14 are arranged on the surface of the front plate 1, and the back plate
  • a plurality of address electrodes 15, dielectric layers 16, barrier ribs 17, and phosphors 18 to 20 orthogonal to the X electrode 11 and the Y electrode 12 are disposed on the surface of 2.
  • the space inside the cell is filled with a gas, which is a discharge gas, and is controlled by controlling the voltage applied to each electrode. To discharge the gas in an excited state.
  • the phosphors 18 to 20 convert ultraviolet rays generated by the discharge into visible light.
  • one field is composed of 10 subfields 21 to 30, and FIG. 9 (b) shows one subfield. It describes that a reset period 31, an address period 32, and a sustain period 33 are provided in the field.
  • a driving method for supplying power to the X electrode, the Y electrode, and the address electrode during the reset period, address period, and sustain period of the conventional plasma display panel will be described.
  • the field interval is divided into a plurality of subfields, and the subfield is divided into a reset period, an address period, and a sustain period.
  • Drive waveforms are supplied to the X, Y, and address electrodes.
  • the X electrode and address electrode are set to the GND voltage, and the Vw voltage is supplied to the Y electrode for resetting.
  • the V electrode is set to the Vx voltage and the Y electrode is set to Vy.
  • the X electrode and the address electrode are set to the GND voltage in the reset period, the Vw voltage is supplied to the Y electrode to perform the reset, and the Vx voltage is applied to the X electrode in the address period.
  • Supply the lZ2Vs voltage to the Y electrode supply the Va voltage to the address electrode, specify the address of the lighting cell, and supply the sustain voltage lZ2Vs, -lZ2Vs alternately to the X electrode and the Y electrode during the sustain period
  • the lighting of the cell may be maintained.
  • Patent Document 1 describes a plasma display panel including a write drive circuit, a scan drive circuit, a sustain drive circuit, and an erase drive circuit in order to reduce the power consumption of a plasma display panel. It has a data detector that detects the presence or absence of display data, and when there is no display data, the output signal of this data detector A technique is disclosed in which the operation of the sustain drive circuit in one field period is stopped by controlling the sustain drive timing generation unit.
  • Patent Document 2 discloses a method for writing display data to address electrodes of a plasma display panel in order to greatly reduce power consumption for invalid charging / discharging of a panel by a sustain discharge pulse.
  • Disclosed is a plasma display device that eliminates invalid charge / discharge to the panel and reduces power consumption by stopping the sustaining pulse for the display electrode without display discharge.
  • the number of pixels to be written for each writing line is calculated based on the information from the subfield conversion unit, and the data as to whether there is writing for each line is stored. Is stored for each subfield in the memory, and after the write operation is completed, the stored memory data is transferred to the shift register of the scan driver circuit to determine whether or not there is a write for each line before performing the sustain operation. Detects the presence / absence of a line before the sustain operation, and does not perform the sustain operation for a line that has not been written, thus minimizing power consumption for charging and discharging electrodes that are not related to writing. Is possible
  • Patent Document 1 Japanese Patent Laid-Open No. 11 190984
  • Patent Document 2 Japanese Patent Laid-Open No. 2005-24607
  • the panel capacity viewed from the circuit of the plasma display panel depends on the number of the stopped display lines. Change. That is, the capacity of the panel itself does not change, but the apparent panel capacity is reduced by reducing the capacity charged by supplying the drive waveform.
  • the LC resonance time of the drive waveform supplied to the display line to be lit changes as the panel capacity changes in terms of circuit power. In other words, when the panel capacity is reduced in view of the circuit force, the LC resonance time is shortened and the sustain waveform rises sharply.
  • Patent Document 1 and Patent Document 2 disclose that the operation of the sustain drive circuit is stopped (the supply of the sustain waveform is stopped) when the panel is not turned on, the sustain waveform is disclosed. The above-mentioned problems associated with stopping the supply cannot be solved.
  • the problem to be solved by the present invention is that when the supply of the drive waveform to the display line that does not light up on the plasma display screen is stopped, the circuit of the plasma display panel depends on the number of display lines stopped.
  • the panel capacity changes as seen from the outside, and the LC resonance time of the drive waveform supplied to the display line that is lit changes, causing a luminance step, and the clamp time is delayed with respect to the sustain discharge due to the change in the LC resonance time. Therefore, it is intended to solve the problem that the operating margin becomes unstable.
  • the supply of the sustain waveform to the display line is stopped while one cell is not turned on in units of subfields. Adjust the timing of the clamp period.
  • a sustain waveform is generated and supplied to each display line of the plasma display. However, one cell is not lit.
  • power consumption can be reduced by stopping the supply of a sustain waveform to a display line in which one cell is not lit in subfield units, and a luminance step due to the presence or absence of the stop line can be reduced. This can solve the problem that the operation margin becomes unstable because the clamp timing is delayed with respect to the sustain discharge due to the LC resonance time change.
  • FIG. 1 is a diagram showing drive waveforms of Example 1 of the plasma display of the present invention.
  • FIG. 2 is a diagram showing a solution to the conventional problem of Example 1 of the plasma display of the present invention.
  • FIG. 3 is a diagram showing drive waveforms in Example 2 of the plasma display of the present invention.
  • FIG. 4 is a diagram showing a configuration of a drive circuit of Example 1 of the plasma display of the present invention.
  • FIG. 5 is a diagram showing a solution to the conventional problem of the first embodiment of the plasma display of the present invention and the SW timing of the Y electrode driving circuit and the X electrode driving circuit described in Fig. 4. .
  • FIG. 6 is a diagram showing a configuration of a drive circuit of Example 2 of the plasma display of the present invention.
  • FIG. 7 is a diagram showing the drive waveform of the second embodiment of the plasma display of the present invention, the solution to the conventional problem, and the SW timing of the Y electrode drive circuit and the X electrode drive circuit described in FIG. It is.
  • FIG. 8 is a diagram showing a schematic diagram of a panel and a driving circuit of a conventional plasma display device.
  • FIG. 9 is a diagram showing a structure of a conventional plasma display panel and a subfield configuration of drive signals. Explanation of symbols
  • FIG. 1 shows driving waveforms of Example 1 of the plasma display of the present invention.
  • the drive waveform shown in Fig. 1 shows the case where only one cell is lit in subfield units.
  • the display line is from the first line to the nZ2 line (the upper half of the line is not lit). ing.
  • a circuit for detecting the presence or absence of a non-display line before applying a sustain waveform using a conventional technique is provided inside the plasma display.
  • the X electrode XI To XnZ2 and Y electrode Y For the electrodes up to 1 force YnZ2, the address voltage is not supplied in the address period, and the sustain voltage is not supplied in the sustain period. Furthermore, the reset voltage supply can be stopped during the subsequent reset period.
  • FIG. 2 shows a solution to the conventional problem according to Example 1 of the plasma display of the present invention.
  • the sustain voltage when the sustain voltage is not supplied to a part of the display line (for example, from the first line to the nZ2 line), the panel capacity of the plasma display panel as seen from the circuit
  • the sustain waveform changes to waveform A force waveform B, and the L value deviates appropriately from the panel capacity, and the waveform is flat.
  • Time tl, t2 occurs, the slope becomes steep, and the clamp timing for maintaining a predetermined voltage is delayed with respect to the sustain discharge, so that the operation margin becomes unstable.
  • Example 1 of the plasma display of the present invention when the panel capacity is halved, the LC resonance time is reduced by 2Z2 times, and the waveform A is changed to the waveform C as shown in the lower diagram of FIG.
  • the sustain discharge can be stably performed by advancing the timing of the clamp time.
  • the clamp timing is changed in the same way when the waveform rises and falls as shown in the lower figure of Fig. 2.
  • the brightness can be increased by allocating the reduced time to the increase in the number of sustain pulses.
  • Fig. 2 shows the current supplied from the power recovery circuit and the recovered current. In order to use power efficiently, it is desirable to perform rising and falling clamps between the peak and zero cross point in the figure.
  • FIG. 4 shows the configuration of the drive circuit of Example 1 of the plasma display of the present invention.
  • Y electrode drive circuit lines Yl to Yn are connected to the panel capacitance Cpanel!
  • power recovery circuit LC resonance
  • inductors LI, L2, and Cpump After that, power is clamped to Vs by turning on SWly.
  • the sustain waveform falls, the power is recovered by the above power recovery circuit and clamped to GND when SW2y is turned on.
  • a display line is selected by SW_Ylu to SW_Ynu and SW_Yld to SW_Ynd.
  • Display line 1 In the case of the first line to the nZ2 line, the display line is not selected by SW_Ylu to SW_Y (n / 2) u and SW_Yld to SW_Y (n / 2) d. In addition, if there is a display line that is not selected, the effective value of the panel capacitance Cpanel is reduced, and the LC resonance time due to the L value of the circuit L1 and L2 is shortened. By controlling the timing of SWly and SWlx of the drive circuit, the clamp time is shortened and the sustain period is shortened.
  • FIG. 5 shows a drive waveform of the first embodiment of the plasma display of the present invention and a solution to the conventional problem.
  • the drive waveform in FIG. 5 is obtained by controlling the SW timing of the Y electrode drive circuit and the X electrode drive circuit shown in FIG.
  • the timing of the drive waveform supplied to the ⁇ electrode from Y (n / 2) + 1 to ⁇ is advanced by the timing of SWly to SW4y of the Y electrode drive circuit, and SWlx to SW4x of the X electrode drive circuit
  • the sustain waveform A is changed to the sustain waveform C, and the clamp time is Early, the sustain cycle is shortened from a to b.
  • the sustain discharge can be stably performed.
  • the brightness can be increased by allocating the reduced time to the increase in the number of sustains.
  • the switch switching is performed together with the stop of power supply by a control circuit (not shown) when a non-lighting line is detected.
  • FIG. 3 is a diagram showing drive waveforms in the second embodiment of the plasma display of the present invention.
  • Figure 3 shows the drive system that outputs + lZ2Vs and 1LZ2Vs sustain voltage for both XY electrode drive circuits!
  • Example 2! / In the case of the display cell 1S 1st line to nZ2 line (the upper half of the line does not light up) During the sustain period, control is performed so that only the Y electrodes from the first line to the nZ2 line are fixed at the GND voltage. And in optimizing the LC resonance time, only the Y electrode And do it. By using only the Y electrode side, the circuit cost can be reduced and a conventional switch for applying a scan pulse can be used. As a method for optimizing the LC resonance time, the same method as in the first embodiment is applied.
  • FIG. 6 shows the configuration of the drive circuit of Example 2 of the plasma display of the present invention.
  • ⁇ When the display line is from the first line to the ⁇ 2 line (the upper half of the line is not lit) Since the X electrode supplies all sustain waveforms from the 1st line to the ⁇ line, the ⁇ electrode supplies the ⁇ electrode from ⁇ ( ⁇ 2) +1 to ⁇ , and the panel capacitance decreases. In the sustain waveform using this, the clamp timing for LC resonance is changed only on the first side, thereby shortening the pulse width of the sustain pulse on the second electrode side.
  • FIG. 7 shows a drive waveform of the second embodiment of the plasma display of the present invention and a solution to the conventional problem.
  • the drive waveform of the second embodiment shown in FIG. 7 is obtained by controlling the timing of each SW of the vertical electrode drive circuit and the X electrode drive circuit of FIG.
  • the timing of the drive waveform supplied to the Y electrode from Y (nZ2) + l to Yn is advanced by using SWly to SW9y of the Y electrode drive circuit, and the sustain waveform D is changed to the sustain waveform E.
  • the timing of the drive waveform supplied to the X electrodes from Xl to Xn is advanced, and the sustain waveform D is changed to the sustain waveform E.
  • the sustain discharge can be stably performed.
  • the brightness can be increased by allocating the reduced time to the increase in the number of sustains.
  • the driving method of the present invention also includes a Y electrode, one X electrode adjacent to the Y electrode, and an ALIS method in which discharge between the Y electrode and the other X electrode is performed in a time-divided manner. Combinations are possible.

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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

Procédé et dispositif de commande pour commander un affichage plasma dans lequel l’émission d’une forme d’onde de commande vers la ligne d’affichage non-éclairante d’un écran d’affichage à plasma est arrêtée tout en évitant les différences de niveau de luminance ou l’instabilité des incidents de marge opérationnelle à l'arrêt de l'émission de la forme d'onde de commande. Dans l’affichage à plasma selon l’invention, une forme d’onde de maintien est crée et émise à chaque ligne d’affichage de l’affichage à plasma, et l’émission de la forme d’onde de maintien est arrêté pour une ligne d'affichage dans laquelle absolument aucune cellule n'est éclairée dans une unité de sous-champ accélérant ainsi la période d'alignement de la forme d’onde de maintien et raccourcissant le cycle de maintien.
PCT/JP2005/012476 2005-07-06 2005-07-06 Procédé et dispositif de commande pour commander un affichage à plasma WO2007004298A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2007523315A JPWO2007004298A1 (ja) 2005-07-06 2005-07-06 プラズマディスプレイの駆動方法及び装置
CN200580049665.0A CN101167115A (zh) 2005-07-06 2005-07-06 等离子体显示的驱动方法及装置
PCT/JP2005/012476 WO2007004298A1 (fr) 2005-07-06 2005-07-06 Procédé et dispositif de commande pour commander un affichage à plasma

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2005/012476 WO2007004298A1 (fr) 2005-07-06 2005-07-06 Procédé et dispositif de commande pour commander un affichage à plasma

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WO2007004298A1 true WO2007004298A1 (fr) 2007-01-11

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CN (1) CN101167115A (fr)
WO (1) WO2007004298A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009527628A (ja) * 2006-02-21 2009-07-30 モメンティブ パフォーマンス マテリアルズ インコーポレイテッド 有機官能性シランおよびそれの混合物を作製するプロセス

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0266593A (ja) * 1988-09-01 1990-03-06 Hitachi Ltd マトリクス型パネル表示装置
JPH11190984A (ja) * 1997-10-24 1999-07-13 Matsushita Electric Ind Co Ltd プラズマディスプレイパネルの駆動装置及び駆動方法
JP2000089721A (ja) * 1998-09-11 2000-03-31 Victor Co Of Japan Ltd プラズマディスプレイパネル表示装置及びその駆動方法
JP2002162932A (ja) * 2000-09-13 2002-06-07 Matsushita Electric Ind Co Ltd 表示装置およびその駆動方法
JP2003316313A (ja) * 2002-04-22 2003-11-07 Fujitsu Hitachi Plasma Display Ltd プラズマディスプレイパネルの駆動方法およびプラズマディスプレイ装置
JP2004341290A (ja) * 2003-05-16 2004-12-02 Fujitsu Hitachi Plasma Display Ltd プラズマディスプレイ装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0266593A (ja) * 1988-09-01 1990-03-06 Hitachi Ltd マトリクス型パネル表示装置
JPH11190984A (ja) * 1997-10-24 1999-07-13 Matsushita Electric Ind Co Ltd プラズマディスプレイパネルの駆動装置及び駆動方法
JP2000089721A (ja) * 1998-09-11 2000-03-31 Victor Co Of Japan Ltd プラズマディスプレイパネル表示装置及びその駆動方法
JP2002162932A (ja) * 2000-09-13 2002-06-07 Matsushita Electric Ind Co Ltd 表示装置およびその駆動方法
JP2003316313A (ja) * 2002-04-22 2003-11-07 Fujitsu Hitachi Plasma Display Ltd プラズマディスプレイパネルの駆動方法およびプラズマディスプレイ装置
JP2004341290A (ja) * 2003-05-16 2004-12-02 Fujitsu Hitachi Plasma Display Ltd プラズマディスプレイ装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009527628A (ja) * 2006-02-21 2009-07-30 モメンティブ パフォーマンス マテリアルズ インコーポレイテッド 有機官能性シランおよびそれの混合物を作製するプロセス

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CN101167115A (zh) 2008-04-23
JPWO2007004298A1 (ja) 2009-01-22

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