WO2003007284A1 - Procede de pilotage d'un ecran d'affichage a plasma, et pilote d'ecran d'affichage a plasma - Google Patents
Procede de pilotage d'un ecran d'affichage a plasma, et pilote d'ecran d'affichage a plasma Download PDFInfo
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- WO2003007284A1 WO2003007284A1 PCT/JP2002/006915 JP0206915W WO03007284A1 WO 2003007284 A1 WO2003007284 A1 WO 2003007284A1 JP 0206915 W JP0206915 W JP 0206915W WO 03007284 A1 WO03007284 A1 WO 03007284A1
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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
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
- G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
- G09G3/2025—Display of intermediate tones by time modulation using two or more time intervals using sub-frames the sub-frames having all the same time duration
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
- G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
- G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
- G09G3/204—Display of intermediate tones by time modulation using two or more time intervals using sub-frames the sub-frames being organized in consecutive sub-frame groups
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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
- G09G3/292—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 reset discharge, priming discharge or erase discharge occurring in a phase other than addressing
- G09G3/2927—Details of initialising
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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
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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
- G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
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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
- G09G3/293—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 address discharge
- G09G3/2937—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 address discharge being addressed only once per frame
Definitions
- the present invention relates to a driving method and a driving apparatus for a plasma display panel used for a display device of an information terminal device or a personal computer, or an image display device of a television.
- This plasma display panel is a display device that realizes color display by irradiating the phosphors (red, green, and blue) with ultraviolet light generated by the plasma discharge in the gas.
- the plasma display panel driving device is driven by a plasma display panel driving device.
- This plasma display panel driving device divides one image field into a plurality of subfields and controls the number of discharges for each subfield. To display gradation.
- Fig. 1 shows the general electrode configuration of a plasma display panel 100 and three drive circuits for displaying the gray scale of the plasma display panel 100, namely, a data driver 200 and a scanning driver.
- FIG. 3 is a diagram showing 220 and a sustain driver 210.
- the plasma display panel 100 faces a plurality of scan electrodes 101 and a plurality of sustain electrodes 102 arranged on a front glass substrate (not shown) and the front glass substrate (not shown). And a plurality of data electrodes 103 arranged on the rear glass substrate.
- the data driver 200 selectively applies a voltage to the plurality of data electrodes 103.
- the scan driver 220 selectively applies a voltage to the plurality of scan electrodes 101, and the sustain driver 210 applies a voltage to the plurality of sustain electrodes 102 simultaneously. Apply.
- Scan electrode 101 and sustain electrode 102 are arranged in parallel with each other, and data electrode 103 is arranged to be orthogonal to these.
- a cell 104 serving as a minimum unit of display is located between two points where the data electrode 103 intersects.
- Figure 2 is, in a general plasma display panel driving method, the scanning electrodes 1 0 1, Oh a diagram showing a sustain electrode 1 0 2 and the data electrode 1 0 3 voltage waveform applied to -3 0
- the charges accumulated in the dielectric covering the electrodes are erased by the erase pulse 301 applied to the sustain electrodes 102 (erasing step).
- an erasing period a period during which the erasing step is performed in one subfield.
- a high-voltage initialization pulse 302 is applied to the scan electrode 101, and a discharge (hereinafter, referred to as “initialization discharge”) is performed in all cells in the panel, and the scan electrode 101 is covered. Negative charges are accumulated in the dielectric material, and positive charges are accumulated in the dielectric material covering the address electrodes (initialization step).
- an initialization period a period during which the initialization process is performed in one subfield.
- the charges accumulated in the dielectric covering the scan electrode 101 and the address electrode effectively act, and the amplitude of the scan pulse and the data pulse can be reduced.
- a negative scan pulse 303 is sequentially applied to the scan electrode 101, and simultaneously a positive data pulse 304 is applied to the address electrode, thereby writing data in a cell existing at the intersection. Only discharge occurs.
- the application of the data pulse 304 to the address electrode is selectively performed based on an image signal acquired from the outside.
- a positive charge is accumulated in the dielectric on the scan electrode 101 during the write discharge, and Negative charges are accumulated in the dielectric on 102 (writing step).
- a writing period a period during which the writing step is performed in one subfield.
- the discharge cells that should emit light may not emit light during the subsequent sustain period.
- Such a write failure is called a write failure.
- the light is not emitted when it should be emitted, so that the image quality is deteriorated.
- a high-voltage sustain pulse 305 is alternately applied to the scan electrode 101 and the sustain electrode 102.
- the sustain discharge is generated only in the cell in which the write discharge has occurred during the write period, that is, in the cell in which the dielectric on the sustain electrode 102 has accumulated a negative charge (maintenance step).
- a period during which the maintenance process is performed in one subfield is called a maintenance period.
- This sustain discharge becomes light emission that contributes to image display.
- sustain period Since the sustain period is completed by applying a sustain pulse to scan electrode 101, positive charges are accumulated on sustain electrode 102 after the end of the sustain period.
- the first subfield is set to SF1
- the subsequent subfields are set to SF2 and SF.
- the driving method of the plasma display panel including the initialization step, the writing step, the maintenance step, and the erasing step in each subfield is called an ADS (Address Display Separated Sub-field method) driving method.
- ADS Address Display Separated Sub-field method
- ADS driving method is described in, for example, “Display Panel Driving Method and Apparatus” in JP-A-6-186927, and “Plasma Display” in JP-A-5-307935. Apparatus ".
- the erasing process is abolished in some subfields, and the sustaining pulse at the end of the sustaining period and the initialization process are performed at the same time.
- Light emission is suppressed to prevent an increase in luminance in low gradation display.
- the above-mentioned write failures are likely to occur.However, by improving the material of the dielectric protection layer, which is the uppermost layer of the front glass substrate, the write failures can be improved by an approach other than the driving method. It is possible, and there is no problem even if the erasing process is not performed in some subfields.
- plasma display panel driving method is referred to as a real black driving method, and is described here as being included in the ADS driving method in order to be distinguished from the STCE driving method described later.
- FIG. 5 is a diagram showing voltage waveforms applied to the scan electrode 101, the sustain electrode 102, and the data electrode 103 in the real black driving method.
- the difference from the ADS drive method is that in the real black drive method, the base voltage of the applied voltage during the writing period is lower than in the ADS drive method, and the potential of the scan pulse 3 13 is lower than the scan pulse 303 in the ADS drive method. Has become, and, A part of the sustain period overlaps with the reset period, and the reset pulse 3 12 in the overlap period is applied continuously in a step-by-step manner in a voltage decreasing manner, and the sustain pulse 31 with a slightly reduced voltage is applied. 5 is applied.
- the light is kept off in the sustain period until the sub-feed immediately before the writing is performed, and the lighting is maintained in the sustain period from the sub-field where the writing is performed.
- the method of starting the sustain discharge in the sustain period with writing as the trigger as described above is called the selective writing method or positive logic write, and conversely, after the initialization discharge is performed.
- the sustain period sustain discharge is continuously performed until writing is performed, and the method of stopping the sustain discharge in the sustain period with writing as a trigger is called selective erase method or negative logic write.
- the plasma display panel is driven by the STCE drive method based on the selective writing method.
- FIG. 7 shows the scan electrode 101, sustain electrode 102, and data in the STCE drive system.
- FIG. 4 is a diagram showing a voltage waveform applied to an electrode 103 overnight.
- the difference between the STCE drive method and the ADS drive method is that in the subfield group to which the STCE drive method is applied, an initialization period is provided only for the first subfield, and the initialization pulse is applied during this initialization period. 3 3 2 is applied, the second and subsequent subfields have no initialization period, and an erasing process (not shown) is provided only in the last subfield. Is applied to the sustain electrode 102 with a positive polarity and a high voltage.
- the STCE driving method has a problem that the number of gradations is smaller than that of the ADS driving method having the same number of subfields. More specifically, for example, as shown in FIG. 6, when one field is time-divided into 12 subfields having different luminance weights, no writing is performed, or any one of the subfields is written. Since writing is performed in the field, only a total of 13 gray levels from 0 gray level to 12 gray levels can be expressed, whereas in the ADS drive system with 12 subfields, there are 496 gray levels. It is possible to display gray scales.
- one field is time-divided into two subfield groups, and in each subfield group, the above-described STCE driving method is used.
- one field is time-divided into two subfield groups, voltage is applied by the STCE drive method in one subfield group, and voltage is applied by the ADS drive method in the other subfield group. There is also a method of applying the voltage.
- the ADS driving method is used in this subfield group.
- the ADS driving method is used in this subfield group.
- the STCE drive method tends to concentrate light emitting subfields in a specific one-field period compared to the ADS drive method.
- the peak interval of the emission luminance is 1-50 seconds, and the apparent image update rate is 50 frames Z seconds. Disclosure of the invention
- the present invention has been made in view of the above problems, and has as its object to ensure low power consumption and the number of gradations even when the image update rate (frames / second) is small.
- An object of the present invention is to provide a plasma display panel driving method and a plasma display panel driving device in which a flicking force is hardly generated.
- a method of driving a plasma display panel includes a method of driving a subfield based on a luminance level of an input image signal from a plurality of subfields obtained by time-dividing one field.
- a voltage is applied to the cell in the selected sub-field to perform writing, and in the sub-field corresponding to the writing result, the cell is made to emit light and is maintained to perform gradation display.
- a method of driving a plasma display panel, wherein the one field includes two or more first subfield groups and one or more second subfield groups, wherein the first subfield group is written first.
- the group is characterized in that it is set to emit light or turn off only when writing is performed.
- the continuous light emission period is divided into two.
- the update frequency of the image becomes twice or more in a pseudo manner, thereby suppressing the generation of the fritting force.
- the first subfield group it is sufficient to perform the writing only once when switching between the light emission state and the light-off state, and the power consumption required for the writing is suppressed as compared with the second subfield group.
- the presence of the second subfield group in one field can increase the maximum number of gradations per number of subfields in one field, and the number of gradations that is insufficient with only the first subfield group Is supplemented.
- the first subfield group is an S subfield group to which the STCE driving method is applied
- the second subfield group is an A subfield group or one to which the ADS driving method is applied. Indicates a subfield.
- the one field may be configured such that the first subfield group and the second subfield are sequentially and alternately arranged.
- the first subfield groups that continuously emit light are arranged more separated from each other.
- the effect of the pseudo increase of the image update frequency described above can be more easily obtained.
- the first subfield group keeps a state where the light is continuously turned off until before the first writing is performed, and a state where light is emitted after the first writing is performed.
- the first subfield group may be set at the head of the one field.
- the second subfield group is arranged after the first subfield group.
- the light emitting period is concentrated rearward, and thus the first subfield group and the second subfield group are arranged so that the second subfield group is adjacent to the rear where the light emission is concentrated.
- Light emission of the two subfield groups is continuously performed, the frequency of light emission of the second subfield group from the light-off state is low, and the generation of a moving image false contour near the period is suppressed.
- the first subfield group keeps a state in which light is continuously emitted until before the first writing is performed, and a state in which the first subfield group is turned off after the first writing is performed.
- the second subfield group may be set at the beginning of the one field.
- the first subfield group is arranged after the second subfield group.
- the light emission period is concentrated forward, so that the second subfield group and the second subfield group are arranged so as to be adjacent to the front where the light emission is concentrated.
- the light emission of the one subfield group is continuously performed, the frequency of turning off the light after the light emission of the second subfield group is low, and the generation of a moving image false contour near the period is suppressed.
- the plasma display panel driving method may include an erasing step of erasing wall charges for all the cells in the last subfield of the first subfield group.
- the plasma display panel driving method may include an erasing step of erasing wall charges for all cells in all subfields belonging to the second subfield group.
- a wall is formed for all cells.
- An erasing step for erasing charges may be provided.
- the plasma display panel driving method may include, in parallel with the execution of the sustaining step in the last subfield of the first subfield group, an initial state in a subfield immediately after the first subfield group.
- An initialization step may be provided in which an initialization pulse is applied in advance and all cells are simultaneously initialized and discharged to form wall charges.
- the subfield initialization step immediately after the first subfield group is executed, so that the light emission due to the initialization in which it is originally preferable not to emit the light becomes inconspicuous. In addition, unnecessary luminance rise in low gradation display is suppressed.
- the subfield located in front is positioned rearward in part in parallel with the execution of the maintenance step.
- An initialization step may be provided in which an initialization pulse in a subfield to be applied is applied in advance and all cells are simultaneously initialized and discharged to form wall charges.
- the light emission is originally performed.
- an initialization pulse is applied to initialize all cells at once to form wall charges. Steps may be provided.
- the plasma display panel driving method includes an initialization step of applying the initialization pulse and simultaneously performing an initializing discharge to all the discharge cells to form wall charges only in a first subfield of the one field. It may be. As a result, the number of times the initialization step is executed in one field becomes one, and an unnecessary increase in luminance in low gradation display is suppressed.
- the plasma display panel driving method includes applying the initialization pulse only at the head of the one field and at the head of a first subfield group or a second subfield group arranged near the center of the one field. Then, an initialization step may be provided in which all cells are simultaneously initialized and discharged to form wall charges.
- the plasma display panel driving method includes an initialization step of applying an initialization pulse in a first subfield in the first subfield group to simultaneously initialize and discharge all cells to form wall charges. It may be provided. Thereby, the reliability of writing in the subfield in the first subfield group is improved.
- the initialization pulse is applied to all the sub-fields.
- An initialization step of simultaneously performing an initialization discharge on the cells to form wall charges may be provided.
- the initializing in the first subfield group The activation discharge may be performed only when the immediately preceding first subfield group is not the second subfield group.
- the plasma display panel driving method may include an initialization step of applying the initialization pulse in all subfields of the second subfield group.
- a plasma display panel driving device uses any one of the above plasma display panel driving methods.
- the continuous light emission period is divided into two.
- the update frequency of the image is pseudo-doubling by 2 or more, so that the generation of the fritting force is suppressed.
- the first subfield group it is sufficient to perform the writing only once when switching between the light emission state and the light-off state, and the power consumption required for the writing is suppressed as compared with the second subfield group.
- the presence of the second sub-field group in one field can increase the maximum number of gradations per sub-field number in one field, and can reduce the number of levels that are insufficient only in the first sub-field group.
- the tonality is supplemented.
- the first subfield group is an S subfield group to which the STCE driving method is applied
- the second subfield group is an A subfield group or one to which the ADS driving method is applied. Indicates a subfield.
- FIG. 1 is a diagram showing an electrode configuration of a general plasma display panel and three driving circuits for displaying a gradation on the plasma display panel.
- FIG. 2 is a diagram showing voltage waveforms applied to scan electrodes, sustain electrodes, and data electrodes in a general plasma display panel driving method.
- FIG. 3 is a diagram showing steps performed during one field in the ADS drive method.
- FIG. 4 is a diagram showing steps performed during one field in the real black driving method.
- FIG. 5 is a diagram showing voltage waveforms applied to the scanning electrode, the sustaining electrode, and the data electrode in the real black driving method.
- FIG. 6 is a diagram showing steps performed during one field in the STCE driving method.
- FIG. 7 is a diagram showing voltage waveforms applied to scan electrodes, sustain electrodes, and data electrodes in the STCE drive method.
- FIG. 8 is a diagram showing another variation of the STCE drive method.
- FIG. 9 is a configuration diagram of the plasma display device according to the present embodiment.
- FIG. 10 is a diagram showing a configuration of one field consisting of an S subfield group, an A subfield group, an S subfield group, and an A subfield group.
- FIG. 11 is a diagram showing a conversion table stored in the subfield conversion unit.
- FIG. 12 is a diagram showing a configuration of one field consisting of an S subfield group, an A subfield group, an S subfield group, and an A subfield group.
- FIG. 13 is a diagram showing a conversion table placed in the subfield conversion unit.
- FIG. 14 is a diagram illustrating voltage waveforms applied to the scan electrode, the sustain electrode, and the data electrode in the STCE drive method based on the selective erase method.
- Figure 15 shows the structure of one field in the STCE drive method based on the selective erase method.
- FIG. 16 is a diagram showing the contents of the conversion table placed in the subfield conversion unit.
- FIG. 17 is a diagram illustrating an example of steps performed during one field in the driving method according to the present embodiment.
- FIG. 18 is a diagram showing a configuration of one field in consideration of moving image false contour reduction.
- FIG. 19 is a diagram showing an example of steps performed during one field in the driving method according to the present embodiment.
- FIG. 20 shows the erasing process for the re-creation of wall charges in all sets of one field consisting of a subfield belonging to the A subfield group at the front and a subfield belonging to the S subfield group at the rear.
- FIG. 9 is a diagram showing an initialization step in which the other steps do not overlap.
- FIG. 21 is a diagram showing an erasing step and an initialization step which does not overlap with other steps in a subfield adjacent to the boundary of each subfield group.
- FIG. 22 is a diagram showing an initialization step that does not overlap with other steps in all subfields of the A subfield group in addition to the first subfield of the field.
- FIG. 23 is a diagram showing a process in one field when such a selective erasure method is applied to FIG.
- FIG. 24 is a diagram showing steps in one field when the selective erasure method is applied to FIG.
- FIG. 25 is a diagram showing a process in one field when the selective erasure method is applied to FIG. 21.
- FIG. 26 is a diagram showing a process in one field when the selective erasure method is applied to FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 9 is a configuration diagram of the plasma display device according to the present embodiment.
- the plasma display device shown in FIG. 9 includes a plasma display panel 340, a data detector 350, a display controller 360, a subfield converter 370, a data driver 400, and a scan driver 42. It consists of 0 and a running driver 4110.
- the plasma display panel 340 has a pair of front and back substrates, and a plurality of scanning electrodes 401 and a plurality of sustaining electrodes 402 extending in the horizontal direction of the screen are arranged on the front substrate side, A plurality of data electrodes 403 extending in the vertical direction of the screen are arranged on the rear substrate side.
- the plurality of scan electrodes 401 and the plurality of sustain electrodes 402 and the plurality of data electrodes 403 are arranged in a matrix.
- a discharge cell 404 is formed at each intersection of the scan electrode 401 and the sustain electrode 402 and the data electrode 403.
- Each of the discharge cells 404 has a discharge gas sealed therein, and constitutes a pixel on a screen.
- one pixel is formed by three discharge cells (red, green, and blue) that are adjacent in the horizontal direction of the screen.
- Video data is input to the data detection section 350.
- This video data indicates the gradation value of each cell of the plasma display panel 340. For example, when each cell is displayed in 256 gradations, the gradation per cell is displayed. The value is represented by 8 bits.
- the data detection unit 350 sequentially transfers the image data (gradation values for each cell) to the subfield conversion unit 370.
- the transfer of the image data is performed, for example, in accordance with the cell arrangement order in the plasma display panel 340.
- the subfield conversion unit 370 has a conversion table in which the gradation value is associated with information indicating which subfield in one field is to be written. For example, when one field is time-divided into 10 subfields, the write SF designation for the cell of interest is performed based on the image data of the cell of interest transferred from the data detection unit 350 and the conversion table. Data (information indicating which subfield is to be written in SF1 to SF10) is created, and based on that data, which discharge cell is written in each of subfields SF1 to SF10 is determined. Create the specified write cell designation data and send it to the data driver 400.
- Synchronization signals for example, a horizontal synchronization signal (Hsyc) and a vertical synchronization signal (Vsyc)
- Hsyc horizontal synchronization signal
- Vsyc vertical synchronization signal
- the display control section 360 Based on the synchronization signal, the display control section 360 outputs a timing signal for instructing the data detection section 350 to transfer image data, a sub-field conversion section 370, and a sub-field memory 371.
- a timing signal indicating the timing of writing and reading data, and a timing signal indicating a timing for applying each pulse to the data driver 400, the scanning driver 420, and the scanning driver 410 are transmitted. .
- the data driver 400 is connected to the plurality of data electrodes 403.
- the data driver 400 selectively supplies a plurality of data electrodes 403 during a write period of each subfield so that a stable write discharge can be performed in all the discharge cells 404. Apply a write pulse.
- the scan driver 420 is connected to the plurality of scan electrodes 401.
- the scan driver 420 is configured to perform an initialization period, a writing period, and an erasing period of each subfield so that a stable initializing discharge, a write discharge, a sustain discharge, and an erase discharge can be performed in all the discharge cells 404.
- an initialization pulse, a sustain pulse, a scan pulse, and an erase pulse are applied to the plurality of scan electrodes 401, respectively.
- Scan driver 410 is connected to a plurality of sustain electrodes 402. The scan driver 410 is used to perform the initialization period, the writing period of each subfield so that the stable initializing discharge, write discharge, sustain discharge and erase discharge can be performed in all the discharge cells 404.
- a sustaining pulse and a pulse for a writing operation and an erasing operation are applied to the plurality of sustaining electrodes 402.
- FIG. 10 is a diagram showing the steps performed during one field in the driving method according to the present embodiment.
- one field is time-divided into 10 sub-fields (SF 1 to SF 10).
- the STCE driving method is applied to the subfield group of SF1 to SF4, and this subfield group is referred to as STCE1.
- the STCE driving method is applied to the continuous subfield group from SF5 to SF8 in the same manner as described above, and this subfield group is referred to as STCE2.
- the ADS driving method is applied to a continuous subfield group from SF9 to SF10, and this subfield group is referred to as ADS1.
- an initialization step, a writing step, a maintenance step, and an erasing step are performed in each subfield.
- the subfield group to which the STCE driving method is applied is called the S subfield group
- the subfield group to which the AD S driving method is applied is called the A subfield group. I do.
- one field includes two S subfield groups and one A subfield group.
- FIG. 11 shows the conversion templates stored in the subfield conversion unit 370.
- the sub-fields in this frame indicate that the sub-fields are off during the maintenance period, and conversely, the sub-fields with white backgrounds are on in the maintenance period. It shows that there is.
- a black circle in the frame indicates that writing has been performed, and a white circle in the frame indicates an operation part peculiar to the STCE drive that emits light without being written.
- the image update rate for one frame is 50 frames / sec
- the image update rate is pseudo-100 due to the presence of two luminance peaks in one frame. It becomes frames / second, and the human eye can no longer feel the flickering power.
- two S sub-field groups and one A sub-field group are provided in one field.
- this A sub-field group has a gradation that is insufficient with only the S sub-field group. Plays the role of complementing numbers.
- case 1 is a case where one field consists of two S subfield groups consisting of four subfields and one A subfield group consisting of two subfields.
- Case 1 is a case where one field consists of two S subfield groups consisting of five subfields.
- case 1 and case 2 each field consists of 10 sub-fields.
- the S subfield group emits light intensively in the rear subfield, so if the A subfield group is set in front of the S subfield group, the light emission in the A subfield group The frequency of the non-emission period between the emission in the S subfield group increases, and the emission tends to be intermittent. This is to reduce the possibility that false contours appearing due to the occurrence of color unevenness, that is, moving image false contours are likely to occur.
- the same luminance weighting is applied to the subfields of any of the S subfield groups so that the emission peak level of one of the S subfield groups does not become extremely low. It is set so that there is not much difference in the correspondence between the number of gradations and the subfield to be written.
- the STCE driving method is applied by providing two S subfield groups and one A subfield group in one field. The number of tones that is insufficient with the S subfield group alone is compensated for by the A subfield group to which the ADS driving method is applied, and the peak point of the emission luminance appears dispersed in each S subfield group.
- the image update rate (frames / second) is apparently doubled, making it difficult to generate a flicker force.
- the number of S subfield groups set in one field is two. However, three or more S subfield groups should be set in one field. Does not limit, for example, the image update rate
- one A subfield group is set in one field.
- the number of A subfields set in one field is not limited to one.
- an S subfield group including three subfields, an A subfield group including three subfields, and an S subfield including three subfields A subfield group and an A subfield group consisting of three subfields may be set.
- the A subfield group is composed of two or more subfields, but the A subfield group may be replaced with a simple subfield.
- the reason why the A subfield group is arranged before the S subfield group in one field is to reduce the above-described moving image false contour.
- the S subfield group and the A subfield group are placed first with the S subfield group.
- they are arranged alternately.
- the effect of increasing the number of gradations is greater when two A subfield groups are arranged in one field than when one A subfield group is arranged in one field. can get.
- FIG. 13 is a diagram showing the contents of a conversion table placed in the subfield conversion unit 370 in order to set such a subfield group.
- this driving method enables the expression of 0 to 447 gradations.
- the driving of the plasma display panel by the STCE driving method and the ADS driving method is performed based on the selective writing method.
- the driving may be performed based on the selective erasing method.
- FIG. 14 is a diagram showing voltage waveforms applied to scan electrode 101, sustain electrode 102, and data electrode 103 in the STCE drive method based on the selective erase method.
- the difference from the STCE drive method based on the selective write method is that During the initialization period, a voltage pulse 322a with a negative polarity at the beginning and a positive polarity thereafter is applied to all of the scan electrodes 101, and a positive polarity voltage is applied to all of the sustain electrodes 102 during the initialization period. Consists of applying a voltage pulse 322b.
- the STCE driving method based on the selective erasing method during the writing period, no voltage is applied to the sustain electrode 102, and a negative voltage pulse 323 is applied only to the scan electrode 101 corresponding to the cell for which light emission is stopped. It differs from the STCE drive method based on the selective writing method in that it is applied.
- the positional relationship between the S subfield group and the A subfield group in one field is as follows. It is preferable that the setting is made so as to be located relatively before.
- the S subfield group concentrates on the front subfield.
- the frequency of non-emission periods between the emission in the S subfield group and the emission in the A subfield group will increase. This is because light emission tends to be intermittent, and false contours of moving images easily occur.
- FIG. 12 shows a one-field configuration composed of an S subfield group and an A subfield group to which the STCE driving method based on the selective writing method is applied.
- the STCE drive method and the ADS drive method based on the selective erasure method are applied to the case where the A subfield group, the S subfield group, the A subfield, and the S It is preferable to set in the order of the subfield groups.
- FIG. 16 is a diagram showing the contents of a conversion table placed in subfield conversion section 370 in order to make such settings.
- the driving method of the plasma display panel in the present embodiment is based on the PAL video standard having a relatively small image update rate (frame second). This is an effective method for resolving fringe force in image display. It may be used for image display based on other video standards.
- the configuration of the plasma display device according to the present embodiment is the same as the configuration shown in FIG. 9, and the voltage application pattern during the sustain period, the erase period, and the initialization period is different from that of the first embodiment.
- FIG. 17 is a diagram showing an example of steps performed during one field in the driving method according to the present embodiment.
- one field is time-divided into 12 subfields (SF1 to SF12), and in one field, an S subfield group consisting of two subfields in order, 2 A subfield group consisting of two subfields, S subfield group consisting of two subfields, A subfield group consisting of two subfields, S subfield group consisting of two subfields, and two subfields It consists of a group of A subfields.
- the STCE driving method based on the selective writing method is applied.
- S F 2 is the last subfield in the S subfield group
- SF3 is the first subfield in the A subfield group.
- Embodiment 2 is different from Embodiment 1 in that the initialization step is performed in parallel.
- the voltage application pattern when a part of the maintenance step and the initialization step are performed in parallel is the same as the application pattern of the sustain pulse 315 and the initialization pulse 312 shown in FIG.
- the number of gradations that is insufficient with only the S subfield group to which the STCE drive method is applied can be reduced by the ADS drive method.
- the image update rate (frames / second) is apparent because the peak points of the light emission luminance are dispersed in each S subfield group and appear more easily, while supplementing the number of gradations by the A subfield group to which is applied. It becomes triple, and it becomes difficult to generate a flickering force.
- the present embodiment since a part of the maintenance process and the initialization process are performed in parallel, light emission during a period when light should not be emitted is suppressed. It is possible to prevent the contrast from deteriorating due to an increase in luminance.
- the present embodiment in driving the plasma display panel, by providing three S subfield groups and three A subfield groups in one field, the present embodiment is different from the first embodiment. Similarly, the effect of suppressing flicker and securing the number of gradations is obtained. Further, in this embodiment, light emission should not be performed because a part of the maintenance process and the initialization process are performed in parallel. It is possible to suppress light emission during the period, that is, to prevent an unnecessary increase in luminance and a deterioration in contrast during low gradation display.
- the number of S subfield groups and A subfield groups set in one field is not limited to three. At least one A subfield group and at least two It is sufficient that the S subfield group is set.
- the plasma display panel is driven by the STCE driving method based on the selective writing method, but may be performed based on the selective erasing method.
- the positional relationship between the S subfield group and the A subfield group in one field is as follows. It is preferable to set the position relatively relatively forward.
- the A subfield group If it is set to be located after the S subfield group, the frequency of non-light emission between the light emission in the S subfield group and the light emission in the A subfield group increases, and the light emission becomes intermittent. This is because moving image pseudo contours are easily generated.
- the driving method of the plasma display panel according to the present embodiment is an effective method for solving the flit force in the image display based on the video standard of the PAL system in which the image update rate (frame / second) is relatively small.
- it may be used for image display based on the NTSC video standard, or may be used for image display based on other video standards.
- the configuration of the plasma display device according to the present embodiment is the same as the configuration shown in FIG. 9, and the arrangement of the initialization period and the erasing period in one frame is different from that of the second embodiment.
- FIG. 19 is a diagram showing an example of steps performed during one field in the driving method according to the present embodiment.
- one field is time-divided into 12 subfields (SF1 to SF12), and in one field, an S subfield group consisting of two subfields in order, A subfield group consisting of subfields, S subfield group consisting of two subfields, A subfield group consisting of two subfields, S subfield group consisting of two subfields, A subfield consisting of two subfields It consists of a group of fields.
- the STCE driving method based on the selective writing method is applied.
- SF6 and SF7 are subfields near the center of one field and located at the boundary of the subfield group.
- SF6 is the last subfield in the S subfield group
- SF7 is the first subfield in the A subfield group.
- the driving method of the plasma display panel according to the second embodiment described above differs from the driving method of the second embodiment in that an erasing step is performed at the end of SF 6 and a normal initialization step is performed at the beginning of SF 7.
- an initialization step of performing only initialization without overlapping with other steps is performed only in the first subfield in one feed.
- the wall charge is not formed for one field from the execution of this initialization, for example, in the PAL video standard (50 fields Z seconds), that is, for 2 Oms, so that in the later subfield of the field period, Writing defects are likely to occur.
- the initial subfield group (SF 7) located near the center of the field (SF 7) that performs only initialization without duplication with other processes Perform the conversion process.
- initialization discharge causes light emission irrelevant to image display, which raises the brightness and slightly degrades contrast.However, this is a very small period when viewed from one field, and is not a problem. .
- the erasing process is performed in the subfield near the center of one field and at the two subfields located at the boundary of the subfield group, that is, in the partial range of the field. And initialization process.
- the second embodiment it is possible to suppress the occurrence of a writing error while suppressing the generation of a flit force, securing the number of gradations, and reducing the contrast deterioration.
- the driving method of the plasma display panel according to the present embodiment is an effective method for solving the flit force in the image display based on the PAL video standard having a relatively small image update rate (frame / second). However, it may be used for image display based on the video standard of the NTSC system, and may be used for image display based on the video standard of another system.
- an erase step and an initialization step that does not overlap with other steps may be performed (Case 5).
- an initialization step that does not overlap with other steps may be performed in all subfields of the A subfield group in addition to the first subfield of the field (Case 6).
- the erasure process is performed in the last subfeed of the S subfield group located before the A subfield group.
- the plasma display panel using the STCE driving method is used.
- the driving of the disk is performed based on the selective writing method, it may be performed based on the selective erasing method.
- FIG. 23 is a diagram showing a step in one field when such a selective erasure method is applied to the above-described case 3.
- the positional relationship between the S subfield group and the A subfield group in one field is arranged so that the A subfield group is positioned relatively ahead of the S subfield group. Have been.
- FIG. 24 is a diagram showing a process in one field when the selective erasure method is applied to Case 4 described above.
- the positional relationship between the S subfield group and the A subfield group in one field is such that the A subfield group is positioned relatively before the S subfield group. It is arranged to be.
- FIG. 25 is a diagram showing a process in one field when the selective elimination method is applied to Case 5 described above.
- the positional relationship between the S subfield group and the A subfield group in one field is determined such that the A subfield group is relatively located before the S subfield group. It is arranged to be located.
- FIG. 26 is a diagram showing a step in one field when the selective elimination method is applied to Case 6 described above.
- the positional relationship between the S subfield group and the A subfield group in one field is relatively lower in the A subfield group than in the S subfield group. It is arranged to be located at.
- the present invention is applicable to a driving device of a plasma display panel used for a television, a computer monitor, and the like.
Description
Claims
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KR10-2004-7000304A KR20040014663A (ko) | 2001-07-09 | 2002-07-08 | 플라즈마 디스플레이 패널 구동방법 및 플라즈마디스플레이 패널 구동장치 |
US10/482,899 US20040239593A1 (en) | 2001-07-09 | 2002-07-08 | Plasma display panel drive method and plasma display panel driver |
EP20020743857 EP1406235A1 (en) | 2001-07-09 | 2002-07-08 | Plasma display panel driving method and plasma display panel driver |
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EP (1) | EP1406235A1 (ja) |
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TW516014B (en) * | 1999-01-22 | 2003-01-01 | Matsushita Electric Ind Co Ltd | Driving method for AC plasma display panel |
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- 2002-07-08 KR KR10-2004-7000304A patent/KR20040014663A/ko not_active Application Discontinuation
- 2002-07-08 US US10/482,899 patent/US20040239593A1/en not_active Abandoned
- 2002-07-08 EP EP20020743857 patent/EP1406235A1/en not_active Withdrawn
- 2002-07-08 TW TW091115089A patent/TWI226596B/zh active
- 2002-07-08 WO PCT/JP2002/006915 patent/WO2003007284A1/ja not_active Application Discontinuation
- 2002-07-08 CN CNA02817643XA patent/CN1554081A/zh active Pending
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Cited By (3)
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EP1639574A1 (en) * | 2003-06-30 | 2006-03-29 | E Ink Corporation | Methods for driving electro-optic displays |
EP1639574A4 (en) * | 2003-06-30 | 2009-01-21 | E Ink Corp | METHOD FOR DRIVING ELECTRO-OPTICAL DISPLAYS |
CN101261812B (zh) * | 2003-06-30 | 2010-12-08 | 伊英克公司 | 驱动电光显示器用的方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1406235A1 (en) | 2004-04-07 |
TWI226596B (en) | 2005-01-11 |
US20040239593A1 (en) | 2004-12-02 |
CN1554081A (zh) | 2004-12-08 |
KR20040014663A (ko) | 2004-02-14 |
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