WO2009133660A1 - 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 - Google Patents
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 Download PDFInfo
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- WO2009133660A1 WO2009133660A1 PCT/JP2009/001672 JP2009001672W WO2009133660A1 WO 2009133660 A1 WO2009133660 A1 WO 2009133660A1 JP 2009001672 W JP2009001672 W JP 2009001672W WO 2009133660 A1 WO2009133660 A1 WO 2009133660A1
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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
- G09G3/2965—Driving circuits for producing the waveforms applied to the driving electrodes using inductors for energy recovery
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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
- G09G3/293—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
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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
- 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
- G09G2310/0216—Interleaved control phases for different scan lines in the same sub-field, e.g. initialization, addressing and sustaining in plasma displays that are not simultaneous for all scan lines
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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
- 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
- G09G2310/0218—Addressing of scan or signal lines with collection of electrodes in groups for n-dimensional addressing
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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
Definitions
- the present invention relates to a plasma display panel driving method and a plasma display device, and particularly to a panel structure having a high definition.
- a typical AC surface discharge type panel as a plasma display panel (hereinafter abbreviated as “panel”) has a large number of discharge cells formed between a front substrate and a rear substrate that are arranged to face each other.
- a plurality of pairs of display electrodes composed of scan electrodes and sustain electrodes are formed in parallel on the front substrate, and a plurality of data electrodes are formed in parallel on the back substrate. Then, the front substrate and the rear substrate are disposed opposite to each other so that the display electrode pair and the data electrode are three-dimensionally crossed and sealed, and a discharge gas is sealed in the internal discharge space.
- a discharge cell is formed in a portion where the display electrode pair and the data electrode face each other.
- a sub-field method is used in which one field is divided into a plurality of luminance-weighted sub-fields and gradation display is performed by combining the sub-fields to emit light.
- Each subfield has an initialization period, an address period, and a sustain period.
- initializing discharge is generated, and wall charges necessary for the subsequent address operation are formed.
- address discharge is selectively generated in the discharge cells in accordance with the image to be displayed to form wall charges.
- a sustain pulse is alternately applied to the display electrode pair composed of the scan electrode and the sustain electrode to generate a sustain discharge for a time corresponding to the luminance weight and to emit light from the phosphor layer of the corresponding discharge cell. The image is displayed by.
- an address / maintenance separation method in which an address period and a sustain period are completely separated in time is generally used.
- ADS method there is no time zone in which the discharge cell that generates the address discharge and the discharge cell that generates the sustain discharge coexist, so the conditions are optimal for the address discharge during the address period and the sustain discharge is optimal during the sustain period.
- the panel can be driven under various conditions. Therefore, discharge control is relatively simple, and the panel drive margin can be set large.
- the maintenance period is set in the period excluding the writing period, if the time required for the writing period becomes longer due to the higher definition of the panel, the image quality is ensured while ensuring sufficient luminance. There is a problem that it is difficult to secure a sufficient number of subfields.
- the display electrode pairs are divided into a plurality of groups so that the writing periods of two or more blocks among the plurality of blocks do not overlap in time.
- a driving method is disclosed in which the start times of the subfields of each block are set differently.
- the sustain period of another group can be driven in the write period of a certain group, so that the drive time of one subfield can be shortened, and the subfield set in one field accordingly. You can increase the number.
- the driving time also depends on various conditions such as the number of blocks, the number of scanning electrodes, the number of subfields, the number of sustain pulses, the time required for address discharge and sustain discharge, and the like.
- the present invention has been made in view of such problems, and even in an ultra-high-definition panel, the number of subfields required to ensure sufficient image quality can be set within one field. It is another object of the present invention to provide a panel driving method and a panel device capable of ensuring sufficient luminance.
- the present invention includes a plurality of display electrode pairs each composed of a scan electrode and a sustain electrode and a plurality of data electrodes, and discharges to each of the positions where the display electrode pairs and the data electrodes intersect.
- a plurality of display electrode pairs are divided into a plurality of display electrode pair groups, and for each display electrode pair group, an address period in which an address discharge is generated in the discharge cell and a sustain discharge in the discharge cell.
- One field period is divided using a plurality of subfields having a sustain period to be generated, the number of display electrode pair groups is N, and the time required for performing one address operation in the discharge cells of the entire panel is Tw
- the sustain period time of each subfield in each display electrode pair group is set according to the luminance weight of the subfield within a range of Tw ⁇ (N ⁇ 1) / N or less. It was decided to carry out.
- the “writing operation” refers to writing by a single scan method in which writing is sequentially performed on a plurality of display electrode pairs existing in the entire panel.
- the writing periods for each of the plurality of display electrode pair groups do not overlap each other. That is, writing is not performed on two or more display electrode pair groups at the same time.
- Tw also means “the time required to perform one address operation by the single scan method for the discharge cells of the entire panel”.
- an initializing period for generating an initializing discharge in each discharge cell is provided at the beginning of one field, and after the sustain period of each subfield of each display electrode pair group, the discharge cells discharged in the sustain period are provided. It is desirable to provide an erasing period for generating an erasing discharge.
- the address operation is continuously performed in any one of the display electrode pair groups in one field except the initialization period and the erase period of each subfield.
- the initialization pulse it is preferable to apply the initialization pulse to the scan electrodes constituting the plurality of display electrode pairs in a lump.
- the maximum voltage of the initialization pulse applied to the scan electrode in the initialization period is twice or more the sustain voltage applied to the plurality of display electrode pairs in the sustain period.
- the subfield having the smallest luminance weight is arranged last among a plurality of subfields included in one field period.
- the time of the sustain period of each subfield in each display electrode pair group is set in accordance with the luminance weight within a range of Tw ⁇ (N ⁇ 1) / N or less.
- the address operation can be continuously performed in any one of the display electrode pair groups.
- N is an integer of 2 or more, but the larger the N is, the larger the duration of the maintenance period can be set.
- an initializing period for generating an initializing discharge in each discharge cell is provided at the beginning of one field, and after the sustain period of each subfield of each display electrode pair group, If an erasing period for generating an erasing discharge is provided, the time of the initializing period in one field can be shortened compared with the case where an initializing period is provided for each subfield. Contributes to increasing the number of subfields.
- the highest voltage of the initialization pulse can be set high by applying the initialization pulse to the scan electrodes constituting the plurality of display electrode pairs at once.
- the initialization pulse applied to the scan electrodes in the initialization period is set to be at least twice the sustain voltage applied to the plurality of display electrode pairs in the sustain period, the initialization pulse is applied to each subfield. Even if it is not applied, the state of each discharge cell can be initialized only by providing an erasing period after the sustain period.
- the time length of the last subfield can be shortened by placing the subfield having the smallest luminance weight among the plurality of subfields included in one field period. This contributes to increasing the number of subfields to be set.
- the present invention is particularly effective for a high-definition panel.
- FIG. 2 is an exploded perspective view showing a structure of a panel used in Embodiment 1.
- FIG. It is an electrode array figure of the panel. It is a time chart explaining allocation of a writing period and a sustain period for each of N display electrode pair groups.
- 4 is a diagram for explaining a driving method and a method for setting the number of display electrode pairs according to the first embodiment.
- FIG. It is a figure which shows the drive voltage waveform applied to each electrode of the panel concerning Embodiment 1.
- It is a schematic diagram which shows the subfield structure of the drive voltage waveform concerning embodiment.
- FIG. 1 is a circuit block diagram of a plasma display device according to a first exemplary embodiment; It is a circuit diagram of the scan electrode drive circuit of the plasma display device. It is a circuit diagram of the sustain electrode drive circuit of the plasma display device.
- 6 is an electrode array diagram of a panel used in Embodiment 2.
- FIG. FIG. 6 is a schematic diagram showing a subfield configuration of a drive voltage waveform according to the second exemplary embodiment.
- FIG. 1 is an exploded perspective view showing the structure of panel 10 used in the first exemplary embodiment.
- a plurality of display electrode pairs 24 composed of scanning electrodes 22 and sustaining electrodes 23 are formed.
- the scan electrode 22 has a wide transparent electrode 22a. It has a wide transparent electrode 23a.
- Narrow bus electrodes 22b and 23b are stacked at positions far from the discharge gap on the transparent electrodes 22a and 23a.
- black stripes 29 for blocking light are provided.
- a dielectric layer 25 is formed so as to cover the scan electrode 22, the sustain electrode 23, and the black stripe 29, and a protective layer 26 is formed on the dielectric layer 25.
- a plurality of data electrodes 32 are formed on the rear substrate 31, a dielectric layer 33 is formed so as to cover the data electrodes 32, and a grid-like partition wall 34 is formed thereon.
- a phosphor layer 35 that emits red, green, and blue light is provided on the side surface of the partition wall 34 and on the dielectric layer 33.
- the front substrate 21 and the rear substrate 31 are arranged to face each other so that the display electrode pair 24 and the data electrode 32 intersect each other with a minute discharge space interposed therebetween, and the outer periphery thereof is sealed with a sealing material such as glass frit.
- a sealing material such as glass frit.
- a mixed gas of neon and xenon is enclosed as a discharge gas.
- the discharge space is partitioned into a plurality of sections by partition walls 34, and a discharge cell is formed at each position where the display electrode pair 24 and the data electrode 32 intersect. These discharge cells discharge and emit light to display an image.
- the structure of the panel 10 is not limited to the above-described structure, and may be, for example, provided with a stripe-shaped partition wall.
- FIG. 2 is an electrode array diagram of panel 10 used in the first exemplary embodiment.
- M data electrodes D1 to Dm (data electrode 32 in FIG. 1) long in the column direction are arranged.
- M ⁇ n are formed.
- the 2160 display electrode pairs of the n scan electrodes SC1 to SC2160 and the n sustain electrodes SU1 to SU2160 are divided into a plurality (N) of display electrode pair groups. There are (n / N) pairs of display electrodes.
- N is a natural number of 2 or more, and points to be considered in setting will be described later.
- This panel 10 is driven by a single scan method in which writing is sequentially performed on 2160 lines, and each of the display electrode pair groups of the N display electrode pair groups is not overlapped in time.
- the display electrode pair group subfields are set by shifting the start time of the subfield in the same manner as the driving method disclosed in Patent Document 1, but is necessary for performing one address operation in the discharge cells of the entire panel.
- Time is set to Tw
- the time of the sustain period of each subfield in each display electrode pair group is set in accordance with the luminance weight of the subfield within a range of Tw ⁇ (N ⁇ 1) / N or less.
- Tw ⁇ (N ⁇ 1) / N the difference is that the duration of the maintenance period is set so as to satisfy the inequality Ts ⁇ Tw ⁇ (N ⁇ 1) / N.
- Ts is the time allocated to the sustain period of the subfield with the largest luminance weight).
- a write period is assigned to each display electrode pair group so that a write operation is performed continuously over N groups, excluding the initialization period, within the entire time of one field. be able to.
- SF1 is written to the first group, from time t2 to time t3, SF1 is written to the second group, and from time tN to time tN + 1, the Nth group is written. On the other hand, SF1 is written.
- SF1 is written to the first group
- time tN + 2 to time tN + 3 SF2 is written to the second group.
- SF2 is written to the Nth group.
- SF3 is written at a fixed time Tw / N (time t2N + 1 to time t3N + 1).
- writing of the Kth subfield SFK is also performed at a fixed time Tw / N (time t (K-1) N + 1 to time tKN + 1).
- the time for performing one write operation is Tw / N
- the time length of one subfield is the fixed time Tw.
- the driving method of the panel 10 and the number N of the display electrode pair groups and the time Ts allocated to the sustain period of the subfield with the largest luminance weight satisfy Ts ⁇ Tw ⁇ (N ⁇ 1) / N, they are continuous.
- a write operation can be performed, and a maximum number of subfields can be set within one field period.
- N ⁇ Tw / (Tw ⁇ Ts) is obtained by modifying the above inequalities. From this inequality, it can be considered that the number N of display electrode pair groups may be set to Tw / (Tw ⁇ Ts) or more in order to enable continuous writing.
- Tw ⁇ (N ⁇ 1) / N increases and approaches Tw.
- N 2Tw
- N 3, Tw2 / 3
- N 4, asymptotically Tw3 / 4 and Tw To increase.
- the maximum time Ts assigned to the sustain period can be set larger.
- the rate of increase in Ts with respect to the increase in N decreases. Is considered appropriate.
- FIG. 4 is a diagram for explaining a panel driving method and a method of setting the number of display electrode pair groups according to the first embodiment, and shows a driving voltage waveform in one field period applied to scan electrodes SC1 to SC2160 of panel 10. Is schematically shown. 4 (a) to 4 (d), the vertical axis represents scan electrodes SC1 to SC2160, and the horizontal axis represents time. The timing for performing the write operation is indicated by a solid line, and the timing of the sustain period and the erase period is indicated by hatching.
- the time for one field period is 16.7 ms and the time required for the write operation per scan electrode is 0.7 ⁇ s, the number of scan electrodes is 2160.
- the display electrode pair located in the upper half of the panel is defined as the first display electrode pair group and the display electrode pair located in the lower half of the panel.
- a second display electrode pair group 1080 scan electrodes SC1 to SC1080 and 1080 sustain electrodes SU1 to SU1080 belong to the first display electrode pair group, and 1080 scan electrodes SC1081 to SC2160 and 1080 sustain electrodes SU1081 to SU2160 are the second display electrodes. It belongs to the display electrode pair group.
- an initializing period for generating initializing discharges simultaneously in the discharge cells of the entire panel is provided.
- the time required for the initialization period is 500 ⁇ s.
- the time Tw required to sequentially apply the scan pulses to the scan electrodes SC1 to SC2160 is estimated. At this time, it is desirable to apply the scan pulse as short as possible and continuously as long as possible so that the address operation is continuously performed.
- the time required for the erasing period is very small, if this is ignored and estimated, the time for one field period (16.7 ms) is subtracted from the time for the initialization period (0.5 ms), and writing is performed for all the scan electrodes.
- the display electrode pairs are divided into two display electrode pair groups as shown in FIG. Then, as shown in FIG. 4D, a sustain period for applying a sustain pulse is provided after writing of the scan electrodes belonging to each group.
- sustain pulses of “60”, “44”, “30”, “18”, “11”, “6”, “3”, “2”, “1”, “1” are applied. It shall be applied.
- the time allocated to the sustain period in the subfield “60” having the largest luminance weight is 600 ⁇ s.
- the number N of display electrode pair groups of panel 10 and the time setting of subfields in each display electrode pair group can be performed.
- the erasing period is ignored, but it is desirable to set so that no writing operation is performed when any of the display electrode pair groups is in the erasing period. This is not only for erasing the wall voltage in the erasing period, but also for adjusting the wall voltage on the data electrode in preparation for the writing operation in the next writing period, so the voltage of the data electrode is fixed in the erasing period. It is desirable to keep it.
- FIG. 5 is a diagram illustrating a driving voltage waveform applied to each electrode of the panel 10.
- an initializing period in which initializing discharges are simultaneously generated in all the discharge cells is provided at the beginning of one field, and after the sustain period of each subfield of each display electrode pair group, An erasing period for generating an erasing discharge is provided for the discharge cells discharged in the sustain period.
- FIG. 5 shows the initialization period, the writing periods of SF1 to SF2 and SF3 for the first display electrode pair group, and SF1 to SF2 for the second display electrode pair group.
- 0 (V) is applied to the data electrodes D1 to Dm and the sustain electrodes SU1 to SU2160, respectively, and the scan electrodes SC1 to SC2160 have a voltage lower than the discharge start voltage with respect to the sustain electrodes SU1 to SU2160.
- a ramp waveform voltage that gradually rises from Vi1 toward voltage Vi2 that exceeds the discharge start voltage is applied.
- the maximum voltage V12 applied to the scan electrode during the initialization period is preferably set to be not less than twice the sustain voltage Vs (400V or more). While this ramp waveform voltage rises, a weak initializing discharge is generated between scan electrodes SC1 to SC2160, sustain electrodes SU1 to SU2160, and data electrodes D1 to Dm.
- Negative wall voltage is accumulated on scan electrodes SC1 to SC2160, and positive wall voltage is accumulated on data electrodes D1 to Dm and sustain electrodes SU1 to SU2160.
- the wall voltage on the electrode represents a voltage generated by wall charges accumulated on the dielectric layer covering the electrode, the protective layer, the phosphor layer, and the like.
- positive voltage Ve1 is applied to sustain electrodes SU1 to SU2160, and scan electrodes SC1 to SC2160 have a voltage Vi3 that is lower than or equal to the discharge start voltage with respect to sustain electrodes SU1 to SU2160, to voltage Vi4 that exceeds the discharge start voltage.
- a ramp waveform voltage that gradually falls toward is applied.
- a weak initializing discharge is generated between scan electrodes SC1 to SC2160, sustain electrodes SU1 to SU2160, and data electrodes D1 to Dm.
- the initialization discharge is performed on all the discharge cells, and the initialization is completed.
- This writing is performed by a single scan method, and writing is sequentially performed on 2160 lines as follows.
- the positive voltage Ve2 is applied to the sustain electrodes SU1 to SU2160.
- a discharge starts between data electrode Dk and scan electrode SC1, progresses to a discharge between sustain electrode SU1 and scan electrode SC1, and an address discharge is generated.
- a positive wall voltage is accumulated on scan electrode SC1
- a negative wall voltage is accumulated on sustain electrode SU1
- a negative wall voltage is also accumulated on data electrode Dk.
- an address operation is performed in which an address discharge is generated in the discharge cell to be lit in the first line and a wall voltage is accumulated on each electrode.
- the voltage at the intersection of the data electrodes D1 to Dm to which the address pulse voltage Vd is not applied and the scan electrode SC1 does not exceed the discharge start voltage, so that address discharge does not occur.
- a scan pulse is applied to the scan electrode SC2 of the second line, and an address pulse is applied to the data electrode Dk corresponding to the discharge cell to emit light. Then, an address discharge is generated in the discharge cells in the second line to which the scan pulse and the address pulse are simultaneously applied, and an address operation is performed.
- the above address operation is repeated until the discharge cell on the 1080th line, and an address discharge is selectively generated in the discharge cells to emit light to form wall charges.
- the voltage Vc is applied to the scan electrodes SC1081 to SC2060 belonging to the second display electrode pair group, and the voltage Ve is applied to the sustain electrodes SU1081 to SU2060, which is a rest period in which no discharge occurs.
- the positive voltage Ve2 is applied to the sustain electrodes SU1 to SU2160.
- a scan pulse is applied to scan electrode SC1082, and an address pulse is applied to data electrode Dk corresponding to the discharge cell to emit light. Then, the address discharge is generated in the discharge cell of the 1082th line to which the scan pulse voltage Va and the address pulse voltage Vd are simultaneously applied.
- the above addressing operation is repeated until reaching the discharge cell on the 2160th line, and an address discharge is selectively generated in the discharge cells to emit light to form wall charges.
- This period is the sustain period of SF1 for the first display electrode pair group. That is, scan cells SC1 to SC1080 and sustain electrodes SU1 to SU1080 belonging to the first display electrode pair group are alternately applied with sustain pulses of “60” to cause discharge cells that have undergone address discharge to emit light.
- a sustain pulse having a positive voltage Vs is applied to scan electrodes SC1 to SC1080, and 0 (V) is applied to sustain electrodes SU1 to SU1080.
- the voltage difference between scan electrode SCi and sustain electrode SUi is the sustain pulse voltage Vs, and the difference between the wall voltage on scan electrode SCi and the wall voltage on sustain electrode SUi is added.
- the discharge start voltage is exceeded.
- a sustain discharge is generated between scan electrode SCi and sustain electrode SUi, and phosphor layer 35 emits light by the ultraviolet rays generated at this time.
- 0 (V) is applied to scan electrodes SC1 to SC1080, and a sustain pulse is applied to sustain electrodes SU1 to SU1080.
- the voltage difference between the sustain electrode SUi and the scan electrode SCi exceeds the discharge start voltage, so that the sustain discharge occurs again between the sustain electrode SUi and the scan electrode SCi, and the sustain cell is maintained.
- Negative wall voltage is accumulated on electrode SUi, and positive wall voltage is accumulated on scan electrode SCi.
- sustain pulses are alternately applied to scan electrodes SC1 to SC1080 and sustain electrodes SU1 to SU1080, and a potential difference is applied between the electrodes of the display electrode pair, thereby maintaining the discharge cells in which the address discharge is generated in the address period. Discharging continues and the discharge cell emits light.
- a so-called narrow pulse voltage difference is applied between scan electrodes SC1 to SCn and sustain electrodes SU1 to SUn, and scan electrode SCi and sustain electrode are maintained while leaving a positive wall voltage on data electrode Dk.
- the wall voltage on the electrode SUi is erased.
- the positive voltage Ve2 is applied to the sustain electrodes SU1 to SU2160.
- scan pulses SC1 to SC1080 are sequentially applied to scan electrodes SC1 to SC1080 belonging to the first display electrode pair group, and an address pulse is applied to data electrode Dk.
- An address operation is performed in the discharge cells on the 1st to 1080th lines.
- This period is the sustain period of SF1 for the second display electrode pair group. That is, the sustain electrodes of “60” are alternately applied to scan electrodes SC1081 to SC2160 and sustain electrodes SU1081 to SU2160 belonging to the second display electrode pair group to cause the discharge cells that have undergone the address discharge to emit light.
- a narrow pulse voltage difference is applied between scan electrodes SC1081 to SC2160 and sustain electrodes SU1081 to SU2160, leaving a positive wall voltage on data electrode Dk.
- the wall voltages on scan electrode SCi and sustain electrode SUi are erased.
- the SF2 address period for the second display electrode pair group the SF3 address period for the first display electrode pair group,..., The SF10 address period for the second display electrode pair group, and so on.
- one field ends after the sustain period and erase period of SF10 for the second display electrode pair group.
- the time of the sustain period of each subfield in each display electrode pair group is within the range of Tw ⁇ (N ⁇ 1) / N or less. Since it is set according to the weight, the scan pulse and the address pulse can be arranged so that the address operation is continuously performed in any one of the display electrode pair groups after the initialization period. As a result, 10 subfields within one field period, that is, the maximum number of subfields that can be set within one field period can be set.
- the time Tw required to perform the write operation once for all the scan electrodes is short, so that it can be set within Tw ⁇ (N ⁇ 1) / N or less in each subfield.
- Tw ⁇ (N ⁇ 1) / N or less in each subfield.
- the driving method of this embodiment is particularly useful when driving a high-definition panel.
- an initializing period for generating initializing discharges simultaneously in all discharge cells is provided at the beginning of one field, and an initializing period is provided for each subfield.
- the time of the initialization period in one field can be greatly shortened, which contributes to the increase in the number of subfields provided in one field.
- an all-cell initialization pulse having a high voltage as described above (more than twice the sustain voltage Vs), particularly an all-cell initialization pulse having a ramp waveform as shown in FIG. 5, is applied at the beginning of one field.
- the wall charge of each discharge cell can be sufficiently controlled by applying the erase pulse without applying the initialization pulse for each subfield.
- one field is finally finished in the sustain period and the erase period for the second display electrode pair group. Therefore, if the subfield having the smallest luminance weight is arranged in the last subfield as in the example shown in FIG. 4, the driving time can be shortened.
- ⁇ Thus reducing the drive time in the last subfield in this way contributes to increasing the number of subfields provided in one field.
- the erase operation is performed by giving a narrow pulse-shaped voltage difference between the scan electrode and the sustain electrode in the erase period, and even if any display electrode pair group is in the erase period, Although the subfield configuration and the number of display electrode pair groups were set ignoring the time required for the erasing period for performing the writing operation, a certain amount of time is required to perform the erasing operation. When such a display electrode pair group is in an erasing period, it is desirable to set the display electrode pair group in consideration of not performing an address operation.
- FIG. 6 is a diagram showing variations in the driving voltage waveform applied to each electrode during the erasing period.
- the drive voltage waveform shown in FIG. 6A is obtained by applying a ramp waveform voltage that gradually falls after giving a narrow pulse-shaped voltage difference between the scan electrode SCi and the sustain electrode SUi in the erase period. Apply to SCi.
- this driving waveform although the time required for the erasing period increases, the wall voltage on each electrode can be controlled with high accuracy.
- the ramp waveform voltage that gradually rises is applied to the scan electrode SCi in the erasing period
- the ramp waveform voltage that gradually falls is applied to the scan electrode SCi.
- the wall voltage on each electrode can be accurately controlled although the time required for the erasing period is further increased.
- FIG. 7 is a schematic diagram showing the subfield configuration of the drive voltage waveform, where the vertical axis shows scan electrodes SC1 to SC2160, and the horizontal axis shows time. The timing for performing the write operation is indicated by a solid line, and the timing of the sustain period and the erase period is indicated by hatching.
- FIG. 7A shows a driving voltage waveform when an erasing period is provided immediately after the sustain period. When the first display electrode pair group is in the erasing period, the write operation of the second display electrode pair group is performed. Without this, when the second display electrode pair group is in the erasing period, the address operation of the first display electrode pair group is not performed.
- FIG. 7 shows a driving voltage waveform when an erasing period is provided immediately after the sustain period.
- FIG. 7B shows a driving voltage waveform when an erasing period of the previous subfield is provided immediately before the writing period.
- the subfield configuration and the number N of display electrode pairs can be set in consideration of the time required for the erase period. Good.
- FIG. 8 is a circuit block diagram of the plasma display device 100.
- the plasma display device 100 includes a panel 10, an image signal processing circuit 41, a data electrode drive circuit 42, scan electrode drive circuits 43a and 43b, sustain electrode drive circuits 44a and 44b, a timing generation circuit 45, and power supplies necessary for each circuit block.
- a power supply circuit (not shown) for supplying is provided.
- the image signal processing circuit 41 converts the image signal into image data indicating light emission / non-light emission for each subfield.
- the data electrode drive circuit 42 includes m switches for applying the write pulse voltage Vd or 0 (V) to each of the m data electrodes D1 to Dm.
- the image data output from the image signal processing circuit 41 is converted into address pulses corresponding to the data electrodes D1 to Dm and applied to the data electrodes D1 to Dm.
- the timing generation circuit 45 generates various timing signals for controlling the operation of each circuit based on the horizontal synchronization signal and the vertical synchronization signal and supplies them to each circuit.
- the timing generation circuit 45 generates a field start signal when a predetermined time has elapsed from the vertical synchronization signal V, and uses this field start signal as a starting point to instruct the start of the initialization period, address period, and sustain period of each subfield. Generate a signal. Further, by counting the clocks starting from the timing signal instructing the start of each period, a timing signal instructing the timing of pulse generation to each of the drive circuits 42, 43a, 43b, 44a, and 44b is generated, and each drive Output to the circuit.
- Scan electrode drive circuit 43a drives scan electrodes SC1 to SC1080 based on the timing signal
- scan electrode drive circuit 43b drives scan electrodes SC1081 to SC2160 based on the timing signal
- Sustain electrode drive circuit 44a drives sustain electrodes SU1 to SU1080 based on the timing signal
- sustain electrode drive circuit 44b drives sustain electrodes SU1081 to SU2160 based on the timing signal.
- FIG. 9 is a circuit diagram of the scan electrode drive circuit 43a of the plasma display device 100.
- Scan electrode drive circuit 43 a includes sustain pulse generation circuit 50, initialization waveform generation circuit 60, and scan pulse generation circuit 70.
- Sustain pulse generation circuit 50 includes a power recovery capacitor C51, switching elements Q51 and Q52, backflow prevention diodes D51 and D52, and a resonance inductor L51 that constitute a power recovery unit, and further configures a voltage clamp unit. Switching elements Q55 and Q56. Then, a sustain pulse is applied to scan electrodes SC1 to SC1080.
- the interelectrode capacitance between the display electrodes and the inductor L51 are LC-resonated to perform the rising and falling operations of the sustain pulse.
- the electric charge stored in the power recovery capacitor C51 is transferred to the interelectrode capacitance via the switching element Q51, the diode D51, and the inductor L51.
- the sustain pulse falls, the electric charge stored in the interelectrode capacitance is returned to the power recovery capacitor C51 via the inductor L51, the diode D52, and the switching element Q52.
- the power recovery capacitor C51 has a sufficiently large capacity compared to the capacity between the electrodes, and is charged to about Vs / 2, which is half of the voltage Vs, so as to serve as a power source for the power recovery unit.
- the display electrode is connected to the power source via the switching element Q55 and clamped to the voltage Vs, or the display electrode is grounded via the switching element Q56 and clamped to 0 (V). Accordingly, the impedance at the time of voltage application by the voltage clamp portion is small, and a large discharge current due to strong sustain discharge can be stably passed.
- sustain pulse generating circuit 50 applies sustain pulses to scan electrodes SC1 to SC1080 by controlling switching elements Q51, Q52, Q55, and Q56.
- switching elements can be configured using generally known elements such as MOSFETs and IGBTs.
- the initialization waveform generating circuit 60 includes a Miller integration circuit 61 for applying a slowly rising ramp waveform voltage to the scan electrodes SC1 to SC1080 during the initialization period, and a Miller integration for applying a slowly falling ramp waveform voltage.
- Circuit 62 Here, switching elements Q63 and Q64 are separation switches, and are provided to prevent current from flowing backward through the parasitic diodes of the switching elements constituting sustain pulse generation circuit 50 and initialization waveform generation circuit 60. .
- an initialization pulse having a maximum voltage of 400 V or more can be applied to the scan electrodes SC1 to SC1080 at once.
- Scan pulse generating circuit 70 includes switching elements Q71H1 and Q71L1 for applying scan voltage Va to scan electrode SC1 as necessary, switching elements Q71H2 and Q71L2 for applying to scan electrode SC2,. Switching elements Q71H1080 and Q71L1080 for applying to electrode SC1080 are included. Scan voltage Va is sequentially applied to scan electrodes SC1 to SC1080 at the timing described above.
- FIG. 10 is a circuit diagram of the sustain electrode drive circuit 44a in the plasma display device 100.
- FIG. Sustain electrode drive circuit 44 a includes sustain pulse generation circuit 80 and constant voltage generation circuit 90.
- Sustain pulse generation circuit 80 has the same configuration as sustain pulse generation circuit 50, and includes a power recovery capacitor C81, switching elements Q81 and Q82, backflow prevention diodes D81 and D82, and a resonance circuit that form a power recovery unit. It has an inductor L81, and further has switching elements Q85 and Q86 that constitute a voltage clamp portion. Then, a sustain pulse is applied to sustain electrodes SU1 to SU1080.
- the constant voltage generation circuit 90 includes a switching element Q91 and a backflow prevention diode D91, and applies a positive voltage Ve1 to the sustain electrodes SU1 to SU1080 in the initialization period.
- switching element Q92 and backflow preventing diode D92 are provided, and positive voltage Ve1 is applied to sustain electrodes SU1 to SU1080 in the address period.
- Scan electrode drive circuit 43b has the same configuration as scan electrode drive circuit 43a, and sustain electrode drive circuit 44b has the same configuration as sustain electrode drive circuit 44a.
- the writing drive is performed by the single scan method, and the time of one field period is set to 16.7 ms. Further, the time required for the initialization period is 500 ⁇ s, and the time required for the write operation per one scan electrode is 0.7 ⁇ s. The time Tw required to perform the address operation once for all the scan electrodes is 1512 ⁇ s, and 10 subfields can be secured in one field by performing the address operation continuously, similarly to the first embodiment. It is.
- the number of sustain pulses to be applied is “110”, “81”, “55”, “33”, “20”, “11”, “6”, “4”. ”,“ 2 ”, and“ 1 ”.
- the number N of display electrode pair groups is set to four.
- FIG. 11 is an electrode array diagram of the panel 10 according to the second exemplary embodiment.
- the panel is divided into four display electrode pair groups by vertically dividing the panel into a first display electrode pair group, a second display electrode pair group, and a third display in order from the display electrode pair located at the top of the panel.
- An electrode pair group and a fourth display electrode pair group are provided.
- scan electrodes SC1 to SC540 and sustain electrodes SU1 to SU540 belong to the first display electrode pair group
- scan electrodes SC541 to SC1080 and sustain electrodes SU541 to SU1080 belong to the second display electrode pair group
- scan electrodes SC1081 to SC1081 SC1620 and sustain electrodes SU1081 to SU1620 belong to the third display electrode pair group
- scan electrodes SC1621 to SC2160 and sustain electrodes SU1621 to SU2160 belong to the fourth display electrode pair group.
- FIG. 12 is a schematic diagram showing a subfield configuration of the drive voltage waveform according to the second embodiment, where the vertical axis shows the scan electrodes SC1 to SC2160, and the horizontal axis shows time.
- the timing for performing the write operation is indicated by a solid line, and the timing of the sustain period and the erase period is indicated by hatching.
- the number N of display electrode pairs is increased, and the value of Tw ⁇ (N ⁇ 1) / N is large. Therefore, the time Ts that can be allocated to the maintenance period is increased accordingly.
- the number of sustain pulses applied to the display electrode pair during the sustain period can be increased, and the light emission luminance of the panel can be increased.
- the erase period is provided immediately before the write period of the next subfield. Then, driving is performed so that the address operation is continuously performed in any one of the display electrode pair groups in the field period excluding the initialization period and the respective erasing periods. In addition, a period in which no discharge is generated is provided between the address period and the sustain period so that the sustain period ends immediately before the erase period. As described above, by providing the erase period immediately after the sustain period, the erase discharge can be performed using the priming generated by the sustain discharge, and a stable erase operation can be performed.
- the specific numerical values used in the first and second embodiments are merely examples, and are appropriately set to optimum values in accordance with the panel characteristics, the plasma display device specifications, and the like. It is desirable.
- an ultra-high-definition panel having 2160 lines or more can be driven by a single scan method, and can have a sufficient number of subfields for ensuring image quality, and can be driven with sufficient luminance. Therefore, it is useful for driving a high-definition plasma display device with high brightness.
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Abstract
Description
(パネル構造)
図1は、実施の形態1に用いるパネル10の構造を示す分解斜視図である。ガラス製の前面基板21上には、走査電極22と維持電極23とで構成された表示電極対24が複数形成されている。表示電極対24を形成する走査電極22と維持電極23との間の放電ギャップで放電を発生させ、光を取り出すために、走査電極22は幅の広い透明電極22aを有し、維持電極23も幅の広い透明電極23aを有している。そして透明電極22a、23aの上の放電ギャップから遠い位置に幅の狭いバス電極22b、23bが積層されている。隣接する表示電極対24の間には、光を遮断するブラックストライプ29が設けられている。そして走査電極22と維持電極23とブラックストライプ29とを覆うように誘電体層25が形成され、その誘電体層25上に保護層26が形成されている。
N個に分割された各表示電極対グループにおいて、サブフィールドの開始時間などをどのように設定するかについて説明する。
図5は、パネル10の各電極に印加する駆動電圧波形を示す図である。本実施の形態においては、1フィールドの最初にすべての放電セルで一斉に初期化放電を発生させる初期化期間を設け、かつそれぞれの表示電極対グループのそれぞれのサブフィールドの維持期間の後に、その維持期間で放電した放電セルに対して消去放電を発生させる消去期間を設けている。図5には、初期化期間と、第1の表示電極対グループに対するSF1~SF2およびSF3の書込み期間、第2の表示電極対グループに対するSF1~SF2を示している。
以上説明したように、本実施の形態の駆動方法においては、各表示電極対グループにおける各サブフィールドの維持期間の時間を、Tw×(N-1)/N 以下の範囲内でサブフィールドの輝度重みに応じて設定しているので、初期化期間の後に、いずれかの表示電極対グループで連続して書込み動作を行うように走査パルス及び書込みパルスを配置することができる。その結果、1フィールド期間内に10個のサブフィールド、すなわち1フィールド期間内に設定可能な最大数のサブフィール数を設定することができる。
図6は、消去期間に各電極に印加する駆動電圧波形のバリエーションを示す図である。図6(a)に示した駆動電圧波形は、消去期間において、走査電極SCiと維持電極SUiとの間に細幅パルス状の電圧差を与えた後、緩やかに下降する傾斜波形電圧を走査電極SCiに印加する。この駆動波形によれば、消去期間に要する時間は増加するものの、各電極上の壁電圧を精度よく制御することができる。
図8は、プラズマディスプレイ装置100の回路ブロック図である。
上記実施の形態1の具体例では、表示電極対グループ数Nが2の場合について説明したが、表示電極対グループ数Nをもっと大きく設定する場合について説明する。
なお、以上の実施の形態1,2において用いた具体的な各数値は、単に一例を挙げたに過ぎず、パネルの特性やプラズマディスプレイ装置の仕様等に合わせて、適宜最適な値に設定することが望ましい。
22 走査電極
23 維持電極
24 表示電極対
32 データ電極
41 画像信号処理回路
42 データ電極駆動回路
43a,43b 走査電極駆動回路
44a,44b 維持電極駆動回路
43 表示電極対駆動回路
45 タイミング発生回路
100 プラズマディスプレイ装置
Claims (12)
- 走査電極と維持電極とで構成された表示電極対を複数備えるとともに複数のデータ電極を備え、前記表示電極対と前記データ電極とが交差する位置のそれぞれに放電セルを構成したプラズマディスプレイパネルを駆動する方法であって、
前記複数の表示電極対を複数の表示電極対グループに分け、
前記表示電極対グループ毎に、放電セルで書込み放電を発生させる書込み期間と前記放電セルで維持放電を発生させる維持期間とを有し、輝度重み付けされた複数のサブフィールドを用いて1フィールド期間を分割し、
前記表示電極対グループの数をN(Nは2以上の整数)、パネル全体の放電セルで1回の書込み動作を行うために必要な時間をTwとするとき、
各表示電極対グループの各サブフィールドの維持期間の時間が、Tw×(N-1)/N以下の範囲内で当該サブフィールドの輝度重みに応じて設定された駆動を行うプラズマディスプレイパネルの駆動方法。 - 1フィールドの最初に各放電セルで初期化放電を発生させる初期化期間を設け、且つ各表示電極対グループの各サブフィールドの維持期間の後に、その維持期間で放電した放電セルに対して消去放電を発生させる消去期間を設けた請求項1に記載のプラズマディスプレイパネルの駆動方法。
- 前記初期化期間において、
前記複数の表示電極対を構成する各走査電極に対して、一括して初期化パルスを印加することを特徴とする請求項2記載のプラズマディスプレイパネルの駆動方法。 - 前記初期化期間に前記走査電極に印加する初期化パルスの最高電圧は、
前記維持期間に前記複数の表示電極対に印加する維持電圧の2倍以上である請求項3記載のプラズマディスプレイパネルの駆動方法。 - 前記初期化期間および前記各消去期間を除くフィールド期間に、いずれかの表示電極対グループで連続して書込み動作を行う請求項2に記載のプラズマディスプレイパネルの駆動方法。
- 1フィールド期間に含まれる複数のサブフィールドの中で、輝度重みの最も小さいサブフィールドが最後に配置されている請求項1に記載のプラズマディスプレイパネルの駆動方法。
- 走査電極と維持電極とで構成された表示電極対を複数備えると共に複数のデータ電極を備え、前記表示電極対と前記データ電極とが交差する位置のそれぞれに放電セルを構成したプラズマディスプレイパネルと、前記プラズマディスプレイパネルを駆動するための駆動回路とを備え、
前記駆動回路は、
前記複数の表示電極対を複数の表示電極対グループに分け、
前記表示電極対グループ毎に、前記放電セルで書込み放電を発生させる書込み期間と前記放電セルで維持放電を発生させる維持期間とを有し、輝度重み付けされた複数のサブフィールドを用いて1フィールド期間を分割し、
前記表示電極対グループの数をN(Nは2以上の整数)、パネル全体の放電セルで1回の書込み動作を行うために必要な時間をTwとするとき、
各表示電極対グループの各サブフィールドの維持期間の時間が、
Tw×(N-1)/N以下の範囲内で当該サブフィールドの輝度重みに応じて設定された駆動を行うプラズマディスプレイ装置。 - 1フィールドの最初に各放電セルで初期化放電を発生させる初期化期間を設け、かつ各表示電極対グループの各サブフィールドの維持期間の後に、その維持期間で放電した放電セルに対して消去放電を発生させる消去期間を設けた請求項7に記載のプラズマディスプレイ装置。
- 前記初期化期間において、
前記複数の表示電極対を構成する各走査電極に対して、一括して初期化パルスを印加することを特徴とする請求項8記載のプラズマディスプレイ装置。 - 前記初期化期間に前記走査電極に印加する初期化パルスの最高電圧は、
前記維持期間に前記複数の表示電極対に印加する維持電圧の2倍以上である請求項9記載のプラズマディスプレイ装置。 - 前記初期化期間および前記各消去期間を除くフィールド期間に、いずれかの表示電極対グループで連続して書込み動作を行う請求項7に記載のプラズマディスプレイ装置。
- 1フィールド期間に含まれる複数のサブフィールドの中で、輝度重みの最も小さいサブフィールドが最後に配置されている請求項7に記載のプラズマディスプレイ装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2010510023A JPWO2009133660A1 (ja) | 2008-04-28 | 2009-04-10 | 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 |
CN200980124027.9A CN102077265A (zh) | 2008-04-28 | 2009-04-10 | 等离子体显示面板的驱动方法和等离子体显示装置 |
US12/937,973 US20110037792A1 (en) | 2008-04-28 | 2009-04-10 | Method for driving plasma display panel and plasma display device |
EP09738597A EP2282305A4 (en) | 2008-04-28 | 2009-04-10 | METHOD FOR CONTROLLING A PLASMA DISPLAY PANEL AND PLASMA DISPLAY DEVICE |
Applications Claiming Priority (2)
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JP2008116719 | 2008-04-28 | ||
JP2008-116719 | 2008-04-28 |
Publications (1)
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WO2009133660A1 true WO2009133660A1 (ja) | 2009-11-05 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2009/001672 WO2009133660A1 (ja) | 2008-04-28 | 2009-04-10 | 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 |
Country Status (6)
Country | Link |
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US (1) | US20110037792A1 (ja) |
EP (1) | EP2282305A4 (ja) |
JP (1) | JPWO2009133660A1 (ja) |
KR (1) | KR20100123924A (ja) |
CN (1) | CN102077265A (ja) |
WO (1) | WO2009133660A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010140307A1 (ja) * | 2009-06-02 | 2010-12-09 | パナソニック株式会社 | プラズマディスプレイパネルの製造方法 |
US8298362B2 (en) | 2009-03-25 | 2012-10-30 | Panasonic Corporation | Manufacturing method for plasma display panel |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9999280B2 (en) | 2014-06-27 | 2018-06-19 | David Gareth Zebley | Interactive bracelet for practicing an activity between user devices |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07191627A (ja) * | 1993-12-27 | 1995-07-28 | Nec Corp | プラズマディスプレイパネルの駆動方法 |
JP2001265281A (ja) * | 2000-03-17 | 2001-09-28 | Matsushita Electric Ind Co Ltd | 表示装置およびその駆動方法 |
JP2001306029A (ja) * | 2000-04-25 | 2001-11-02 | Fujitsu Hitachi Plasma Display Ltd | Ac型pdpの駆動方法 |
JP2005070381A (ja) * | 2003-08-25 | 2005-03-17 | Matsushita Electric Ind Co Ltd | プラズマディスプレイ装置の駆動方法 |
JP2005157338A (ja) | 2003-11-04 | 2005-06-16 | Matsushita Electric Ind Co 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 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9309916D0 (en) * | 1993-05-14 | 1993-06-30 | Philips Electronics Uk Ltd | Method of,and system for,describing a geographical area to a communications network |
US5757801A (en) * | 1994-04-19 | 1998-05-26 | Multi-Tech Systems, Inc. | Advanced priority statistical multiplexer |
US5740231A (en) * | 1994-09-16 | 1998-04-14 | Octel Communications Corporation | Network-based multimedia communications and directory system and method of operation |
CA2139081C (en) * | 1994-12-23 | 1999-02-02 | Alastair Gordon | Unified messaging system and method |
US6243373B1 (en) * | 1995-11-01 | 2001-06-05 | Telecom Internet Ltd. | Method and apparatus for implementing a computer network/internet telephone system |
US5805587A (en) * | 1995-11-27 | 1998-09-08 | At&T Corp. | Call notification feature for a telephone line connected to the internet |
US5764732A (en) * | 1995-12-29 | 1998-06-09 | At&T Corp | Called party mailbox service |
US5805997A (en) * | 1996-01-26 | 1998-09-08 | Bell Atlantic Network Services, Inc. | System for sending control signals from a subscriber station to a network controller using cellular digital packet data (CDPD) communication |
US5751961A (en) * | 1996-01-31 | 1998-05-12 | Bell Communications Research, Inc. | Integrated internet system for translating logical addresses of internet documents to physical addresses using integrated service control point |
US6580785B2 (en) * | 1997-02-28 | 2003-06-17 | Paradyne Corporation | Apparatus and method for simultaneous multiple telephone type services on a single telephone line |
US6049602A (en) * | 1997-09-18 | 2000-04-11 | At&T Corp | Virtual call center |
US6487196B1 (en) * | 1998-05-29 | 2002-11-26 | 3Com Corporation | System and method for simulating telephone use in a network telephone system |
US7138966B2 (en) * | 2001-06-12 | 2006-11-21 | Matsushita Electric Industrial Co., Ltd. | Plasma display panel display and its driving method |
EP1560191A4 (en) * | 2003-11-04 | 2006-02-08 | Matsushita Electric Ind Co Ltd | METHOD OF OPERATING A PLASMA PANEL PANEL AND PLASMA SCREEN DEVICE |
JP2007171285A (ja) * | 2005-12-19 | 2007-07-05 | Fujitsu Hitachi Plasma Display Ltd | プラズマディスプレイ装置、プラズマディスプレイパネルの駆動回路、及びプラズマディスプレイパネルの駆動方法 |
-
2009
- 2009-04-10 US US12/937,973 patent/US20110037792A1/en not_active Abandoned
- 2009-04-10 CN CN200980124027.9A patent/CN102077265A/zh active Pending
- 2009-04-10 EP EP09738597A patent/EP2282305A4/en not_active Withdrawn
- 2009-04-10 KR KR1020107023602A patent/KR20100123924A/ko active IP Right Grant
- 2009-04-10 JP JP2010510023A patent/JPWO2009133660A1/ja not_active Withdrawn
- 2009-04-10 WO PCT/JP2009/001672 patent/WO2009133660A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07191627A (ja) * | 1993-12-27 | 1995-07-28 | Nec Corp | プラズマディスプレイパネルの駆動方法 |
JP2001265281A (ja) * | 2000-03-17 | 2001-09-28 | Matsushita Electric Ind Co Ltd | 表示装置およびその駆動方法 |
JP2001306029A (ja) * | 2000-04-25 | 2001-11-02 | Fujitsu Hitachi Plasma Display Ltd | Ac型pdpの駆動方法 |
JP2005070381A (ja) * | 2003-08-25 | 2005-03-17 | Matsushita Electric Ind Co Ltd | プラズマディスプレイ装置の駆動方法 |
JP2005157338A (ja) | 2003-11-04 | 2005-06-16 | Matsushita Electric Ind Co 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 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2282305A4 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8298362B2 (en) | 2009-03-25 | 2012-10-30 | Panasonic Corporation | Manufacturing method for plasma display panel |
WO2010140307A1 (ja) * | 2009-06-02 | 2010-12-09 | パナソニック株式会社 | プラズマディスプレイパネルの製造方法 |
US8317563B2 (en) | 2009-06-02 | 2012-11-27 | Panasonic Corporation | Method for producing plasma display panel |
Also Published As
Publication number | Publication date |
---|---|
EP2282305A1 (en) | 2011-02-09 |
US20110037792A1 (en) | 2011-02-17 |
CN102077265A (zh) | 2011-05-25 |
KR20100123924A (ko) | 2010-11-25 |
JPWO2009133660A1 (ja) | 2011-08-25 |
EP2282305A4 (en) | 2011-08-03 |
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