CN1924972A - Plasma display device and its driving method - Google Patents

Plasma display device and its driving method Download PDF

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Publication number
CN1924972A
CN1924972A CNA2006101394504A CN200610139450A CN1924972A CN 1924972 A CN1924972 A CN 1924972A CN A2006101394504 A CNA2006101394504 A CN A2006101394504A CN 200610139450 A CN200610139450 A CN 200610139450A CN 1924972 A CN1924972 A CN 1924972A
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Prior art keywords
scan electrode
scan
negative
adds
bias voltage
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Chinese (zh)
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催正必
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LG Electronics Nanjing Plasma Co Ltd
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LG Electronics Nanjing Plasma Co Ltd
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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
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)

Abstract

The present invention relates to a plasma display device and its driving method which prevents inadequate shocks in height temperature to stabilize the driving and a drive method thereof. The plasma display device comprises: a plasma display panel consisted of a scan electrode which is separated into an upper scan electrode group and a lower scan electrode group in sequence; a upper scan drive part applying a first scan bias on the upper scan electrode group and a lower scan drive part applying a second scan bias less than the first scan bias on the lower scan electrode group during the location period. The drive method is categorized into a reset period, a location period and a maintenance period according to a plurality of subdomains and displaying an image in frame which is combined by the subdomains. The drive method comprises: a step of applying a first scan bias on the upper scan electrode group and a step of applying a second scan bias less than the first scan bias on the lower scan electrode group during the location period.

Description

Plasm display device and driving method thereof
Technical field
The invention relates to plasm display device and driving method thereof, more specifically say, is about preventing that high temperature from misplacing electricity, guarantees the plasm display device of stabilized driving and driving method thereof.
Background technology
General plasma display, form a unit cell (cell) by the interlayer that forms between its front substrate and back substrate, filled neon (Ne) in each cell (cell), helium (He), or the mixed gas of neon and helium main discharge gases such as (Ne+He) and the inert gas that contains xenon on a small quantity.During the HF voltage guiding discharge, inert gas produces vacuum ultraviolet (Vacuum Ultraviolet ray), makes the light-emitting phosphor that forms between interlayer, display frame.Adopt the plasm display device of aforesaid plasma display to have frivolous structure, get most of the attention as display device of new generation.
Fig. 1 is the structural representation of general plasma display.
As shown in Figure 1, plasma display is by the display surface-front substrate (100) of display frame; Reach the back substrate 110 of forming the back side and keep at a certain distance away, abreast be combined into.
Front substrate (100) is based on face glass plate 101, discharge mutually in a discharge cell (cell), by keeping the luminous scan electrode 102 of discharge cell (cell) (Y electrode) and keeping electrode 103 (Z electrode), i.e. the scan electrode of forming by transparent ITO material transparency electrode a that forms and the bus electrode b that makes by metal material 102 and keep 103 one-tenth two compositions of electrode.Scan electrode 102 and keep electrode 103 restriction discharge currents is covered with upper dielectric layer 104 by of each electrode pair of insulation, above the dielectric layer 104, in order to simplify discharging condition, and forms the protective seam 105 of electroplating magnesium oxide (MgO).
Back substrate 110 is arranged a plurality of discharge spaces based on back glass plate 111,, arranges bar (stripe) type (or well (well) type) interlayer 112 that forms discharge cell (cell) that is, and keeps balance.Again, position discharge, produce vacuum ultraviolet a plurality of keeper electrode 113 (X electrode) and distribute abreast with interlayer 112.The top spraying of back substrate 110, for the R of visible light is radiated in display frame during orientation discharge, G, B fluorophor 114.114 of keeper electrode 113 and fluorophor form protection keeper electrode 113, and to the white dielectric substance layer 115 of the visible light of front substrate 100 reflected fluorescent light bodies 114 emissions.
For aforesaid, the method for display image GTG in the plasma display cooperates Fig. 2 to be described as follows.
Fig. 2 is in the prior art, the image gray-scale level display packing synoptic diagram of plasma display.
As shown in Figure 2, plasma display of the prior art for the GTG of display image, is divided into the different a plurality of subdomains (sub-field) of number of light emission times with a frame (frame), carries out timesharing and drives.Again each subdomain (sub-field) is divided into: the reseting period of initialization whole image; Select scan line, and in selected scan line, select during the location of discharge cell (cell); And during showing keeping of GTG according to discharge time.For example, during in advance with 256 GTG display images, be equivalent to (16.67ms) during 1/60 second the frame (frame), to be divided into 8 subdomains (sub-field) (SFl to SF8), 8 subdomains (sub-field) (SF1 to SF8), as mentioned above, be divided into respectively again: reseting period RP, during the location AP and keep during SP.At this moment, AP during reseting period RP of each subdomain (sub-field) and the location is all identical in each subdomain (sub-field).On the contrary, during keeping with the quantity of keeping pulse that is assigned with, in each subdomain (sub-field), with 2 nThe ratio of (wherein, n=0,1,2,3,4,5,6,7) increases.
Fig. 3 is in the prior art, plasma display panel driving waveform synoptic diagram.
With reference to figure 3, subdomain (sub-field) SF comprises respectively: the reseting period RP of the discharge cell in the initialization whole image (cell), SP during selecting AP during the location of discharge cell (cell) and keeping the keeping of discharge condition of selected discharge cell (cell).
Among the reseting period RP, SU is simultaneously to the negative rising ramp waveform PR that adds of all scan electrode Y during the rising edge.Because above-mentioned rising ramp waveform PR will produce in the discharge cell of whole image (cell) faint discharge (rising edge discharge) will take place, and will gather the wall electric charge in the cell (cell).SD during the negative edge, negative add rising ramp waveform PR after, add to scan electrode Y is negative simultaneously, from keep voltage Vs drops to negative polarity scanning voltage-Vy with certain degree of tilt decline ramp waveform NR than the low positive polarity of ceiling voltage of rising ramp waveform PR.Faint removing discharge takes place in decline ramp waveform NR in cell (cell), wall electric charge that forms in the removing rising edge discharge process and the unnecessary electric charge in the space charge.The required wall electric charge of residual equably orientation discharge in the cell (cell) of whole image.
AP during the location, negative polarity scanning impulse SCNP are negative successively to be added on the scan electrode, simultaneously, and to the negative positive polarity digit pulse DP that adds of keeper electrode.Orientation discharge will take place thereby bear in the discharge cell (cell) that adds digit pulse DP in the wall voltage addition that the potential difference (PD) of above-mentioned scanning impulse SCNP and digit pulse DP and reseting period RP produce.In the selected cell of orientation discharge (cell), form the wall electric charge.
On the one hand. AP. is to keeping the negative positive polarity bias Vzb that adds of electrode Z during SD during the negative edge and location.
SP during keeping, to scan electrode Y with keep electrode Z alternately negative adding and keep pulse SUSP.By the selected cell of orientation discharge (cell), since the wall voltage in the cell (cell) with keep pulse SUSP addition, negative when adding each and keeping pulse SUSP, scan electrode Y and keep the discharge of keeping that the surface-discharge state all takes place between electrode Z, that is the indication of display image discharge.
As mentioned above, in the subdomain (sub-field), the plasma display panel driving process will be all over.
Fig. 4 is in the plasma display panel driving process, and high temperature misplaces the electrical domain synoptic diagram.
As shown in Figure 4, in the plasma display panel driving process, if around environment temperature than normal temperature height, for example, in the time of 50-70 ℃, misplace electrical phenomena with what the discharge cell (cell) that the middle body 400 of picture occurs was closed.Aforesaid high temperature misplaces electrical phenomena, especially in the plasma display of two scan modes, when the picture middle body scans, comes across middle body 400 more.
Aforesaid high temperature misplaces electrical phenomena, and generally the loss owing to wall electric charge during the location occurs.
Especially, high temperature misplaces electrical phenomena, and the leakage of electric current takes place owing to the temperature characterisitic variation of protective seam or dielectric layer.That is, in discharge cell (cell), the rising of external temperature, the insulation characterisitic of dielectric layer reduces, and the wall electric charge that scan electrode takes place or keep electrode leaks, and therefore, during the location sufficient discharge can not take place.Again, under the high temperature, the motion of the interior space charge of cell (cell) is active, recombinates easily, therefore causes the loss of wall electric charge, misplaces.
It is the principal element that reduces the image display quality of plasm display device that aforesaid high temperature misplaces electrical phenomena.
Summary of the invention
The technical matters that solves: in order addressing the above problem, to the objective of the invention is to, to provide to prevent that high temperature from misplacing electricity, guarantee the plasm display device and the driving method thereof of stabilized driving.
Technical scheme: for achieving the above object, the present invention adopts following technical scheme to realize,
Plasm display device provided by the invention is characterized in that it comprises:
(1) comprises the plasma display that is separated into the scan electrode of top and lower scan electrode group according to scanning sequency;
(2) during locating, to the negative top scanning driving part that adds the 1st scan bias voltage of top scan electrode group; And
(3) to the negative lower scan drive division that adds 2nd scan bias voltage littler of bottom scan electrode group than the 1st scan bias voltage.
Aforesaid plasm display device is characterized in that above-mentioned the 1st scan bias voltage and above-mentioned the 2nd scan bias voltage are positive polarity.
Aforesaid plasm display device is characterized in that reseting period, and is equal to the minimum voltage of above-mentioned top and the negative pulse that adds of lower scan electrode group.
Aforesaid plasm display device is characterized in that during the above-mentioned location, to the size of negative the 1st scanning impulse that adds of above-mentioned top scan electrode group, and big or small identical with to negative the 2nd scanning impulse that adds of above-mentioned lower scan electrode group.
Aforesaid plasm display device is characterized in that the minimum voltage of above-mentioned the 1st scanning impulse, and is with above-mentioned reseting period, identical to the minimum voltage of the negative pulse that adds of above-mentioned top scan electrode group.
Plasm display device provided by the invention is characterized in that it comprises:
(1) comprises the plasma display that is separated into the scan electrode of top and lower scan electrode group according to scanning sequency;
(2) during locating, to the negative top scanning driving part that adds the 1st scan bias voltage of top scan electrode group; And
(3) to the negative lower scan drive division that adds 2nd scan bias voltage bigger of bottom scan electrode group than the 1st scan bias voltage.
Aforesaid plasm display device is characterized in that above-mentioned the 1st scan bias voltage and above-mentioned the 2nd scan bias voltage are positive polarity.
Aforesaid plasm display device is characterized in that reseting period, and is equal to the minimum voltage of above-mentioned top and the negative pulse that adds of lower scan electrode group.
Aforesaid plasm display device is characterized in that during the above-mentioned location, to the size of negative the 1st scanning impulse that adds of described top scan electrode group, and big or small identical with to negative the 2nd scanning impulse that adds of above-mentioned lower scan electrode group.
Aforesaid plasm display device is characterized in that the minimum voltage of above-mentioned the 1st scanning impulse, and is with above-mentioned reseting period, identical to the minimum voltage of the negative pulse that adds of described top scan electrode group.
Plasm display device provided by the invention is characterized in that it comprises:
(1) comprises the plasma display of scan electrode; And
(2) preceding half section during locating adds the 1st scan bias voltage to above-mentioned scan electrode is negative, and the second half section during above-mentioned location, to the negative scanning driving part that adds 2nd scan bias voltage littler of above-mentioned scan electrode than above-mentioned the 1st scan bias voltage.
Aforesaid plasm display device is characterized in that above-mentioned the 1st scan bias voltage and above-mentioned the 2nd scan bias voltage are positive polarity.
Aforesaid plasm display device is characterized in that preceding half section during the above-mentioned location, to the size of negative the 1st scanning impulse that adds of above-mentioned scan electrode, and with the second half section during the above-mentioned location, big or small identical to negative the 2nd scanning impulse that adds of above-mentioned scan electrode.
Aforesaid plasm display device is characterized in that the minimum voltage of above-mentioned the 1st scanning impulse, and is with above-mentioned reseting period, identical to the minimum voltage of the negative pulse that adds of above-mentioned scan electrode.
Plasm display device provided by the invention is characterized in that it comprises:
(1) comprises the plasma display of scan electrode;
(2) preceding half section during locating adds the 1st scan bias voltage to above-mentioned scan electrode is negative, and the second half section during above-mentioned location, to the negative scanning driving part that adds 2nd scan bias voltage bigger of above-mentioned scan electrode than above-mentioned the 1st scan bias voltage.
Aforesaid plasm display device is characterized in that above-mentioned the 1st scan bias voltage and above-mentioned the 2nd scan bias voltage are positive polarity.
Aforesaid plasm display device is characterized in that preceding half section during the above-mentioned location, to the size of negative the 1st scanning impulse that adds of above-mentioned scan electrode, and with the second half section during the above-mentioned location, big or small identical to negative the 2nd scanning impulse that adds of above-mentioned scan electrode.
Aforesaid plasm display device is characterized in that the minimum voltage of above-mentioned the 1st scanning impulse, and is with above-mentioned reseting period, identical to the minimum voltage of the negative pulse that adds of above-mentioned scan electrode.
The driving method of plasm display device provided by the invention, it is characterized in that this method is divided into reseting period respectively for a plurality of subdomains (sub-field), during the location and during keeping, and by the frame (frame) that above-mentioned subdomain (sub-field) combines is the unit display image, and it comprises:
(1) during locating, to comprising the top scan electrode group of plasma display who is separated into the scan electrode of top and lower scan electrode group according to scanning sequency, the negative stage that adds the 1st scan bias voltage; And
(2) to the negative stage that adds 2nd scan bias voltage littler of bottom scan electrode group than the 1st scan bias voltage.
The driving method of aforesaid plasm display device is characterized in that above-mentioned the 1st scan bias voltage and above-mentioned the 2nd scan bias voltage are positive polarity.
The driving method of aforesaid plasm display device is characterized in that above-mentioned reseting period, and is equal to the minimum voltage of above-mentioned top and the negative pulse that adds of lower scan electrode group.
The driving method of aforesaid plasm display device is characterized in that during the above-mentioned location, to the size of negative the 1st scanning impulse that adds of above-mentioned top scan electrode group, and big or small identical with to negative the 2nd scanning impulse that adds of above-mentioned lower scan electrode group.
The driving method of aforesaid plasm display device is characterized in that the minimum voltage of above-mentioned the 1st scanning impulse, and is with above-mentioned reseting period, identical to the minimum voltage of the negative pulse that adds of above-mentioned top scan electrode group.
The driving method of plasm display device provided by the invention, it is characterized in that this method is divided into reseting period respectively for a plurality of subdomains (sub-field), during the location and during keeping, and the frame that is combined by above-mentioned subdomain (sub-field) is (frame) unit display image, and it comprises:
(1) during locating, to comprising the top scan electrode group of plasma display who is separated into the scan electrode of top and lower scan electrode group according to scanning sequency, the negative stage that adds the 1st scan bias voltage; And
(2) to the negative stage that adds 2nd scan bias voltage bigger of bottom scan electrode group than the 1st scan bias voltage.
The driving method of aforesaid plasm display device is characterized in that above-mentioned the 1st scan bias voltage and above-mentioned the 2nd scan bias voltage are positive polarity.
The driving method of aforesaid plasm display device is characterized in that above-mentioned reseting period, and is equal to the minimum voltage of above-mentioned top and the negative pulse that adds of lower scan electrode group.
The driving method of aforesaid plasm display device is characterized in that during the above-mentioned location, to the size of negative the 1st scanning impulse that adds of above-mentioned top scan electrode group, and big or small identical with to negative the 2nd scanning impulse that adds of described lower scan electrode group.
The driving method of aforesaid plasm display device is characterized in that the minimum voltage of above-mentioned the 1st scanning impulse, and is with above-mentioned reseting period, identical to the minimum voltage of the negative pulse that adds of above-mentioned top scan electrode group.
The driving method of plasm display device provided by the invention, it is characterized in that this method is divided into reseting period respectively for a plurality of subdomains (sub-field), during the location and during keeping, and by the frame (frame) that above-mentioned subdomain (sub-field) combines is the unit display image, it comprises: (1) during locating preceding half section, to the negative stage that adds the 1st scan bias voltage of scan electrode; And
(2) second half section during the location, the negative stage that adds 2nd scan bias voltage littler than the 1st scan bias voltage.
The driving method of aforesaid plasm display device is characterized in that above-mentioned the 1st scan bias voltage and above-mentioned the 2nd scan bias voltage are positive polarity.
The driving method of aforesaid plasm display device, it is characterized in that preceding half section during the described location, to the size of negative the 1st scanning impulse that adds of described scan electrode, with the second half section during the above-mentioned location, big or small identical to negative the 2nd scanning impulse that adds of above-mentioned scan electrode.
The driving method of aforesaid plasm display device is characterized in that the minimum voltage of above-mentioned the 1st scanning impulse, and is with above-mentioned reseting period, identical to the minimum voltage of the negative pulse that adds of above-mentioned scan electrode.
The driving method of plasm display device provided by the invention, it is characterized in that this method is divided into reseting period respectively for a plurality of subdomains (sub-field), during the location and during keeping, and by the frame (frame) that above-mentioned subdomain (sub-field) combines is the unit display image, it comprises: (1) during locating preceding half section, to the negative stage that adds the 1st scan bias voltage of scan electrode; And
(2) second half section during the location, the negative stage that adds 2nd scan bias voltage bigger than the 1st scan bias voltage.
The driving method of aforesaid plasm display device is characterized in that above-mentioned the 1st scan bias voltage and above-mentioned the 2nd scan bias voltage are positive polarity.
The driving method of aforesaid plasm display device, it is characterized in that preceding half section during the above-mentioned location, to the size of negative the 1st scanning impulse that adds of above-mentioned scan electrode, with the second half section during the above-mentioned location, big or small identical to negative the 2nd scanning impulse that adds of above-mentioned scan electrode.
The driving method of aforesaid plasm display device is characterized in that the minimum voltage of above-mentioned the 1st scanning impulse, and is with above-mentioned reseting period, identical to the minimum voltage of the negative pulse that adds of above-mentioned scan electrode.
The invention has the beneficial effects as follows: plasm display device that provides among the present invention and driving method thereof, can prevent that high temperature from misplacing electricity, guarantee stabilized driving, and reduce manufacturing expense.
Description of drawings
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail:
Fig. 1 is the structural representation of general plasma display.
Fig. 2 is in the prior art, the image gray-scale level display packing synoptic diagram of plasma display.
Fig. 3 is in the prior art, plasma display panel driving waveform synoptic diagram.
Fig. 4 is in the plasma display panel driving process, and high temperature misplaces the electrical domain synoptic diagram.
Fig. 5 is among the present invention the 1st embodiment, the plasm display device synoptic diagram.
Fig. 6 is among the present invention the 1st embodiment, the drive waveforms synoptic diagram of plasm display device.
Fig. 7 is among the present invention the 2nd embodiment, the plasm display device synoptic diagram.
Fig. 8 is among the present invention the 2nd embodiment, the drive waveforms synoptic diagram of plasm display device.
Fig. 9 is among the present invention the 3rd embodiment, the plasm display device synoptic diagram.
Figure 10 is among the present invention the 3rd embodiment, the drive waveforms synoptic diagram of plasm display device.
Figure 11 is among the present invention the 4th embodiment, the plasm display device synoptic diagram.
Figure 12 is among the present invention the 4th embodiment, the drive waveforms synoptic diagram of plasm display device.
Embodiment
Below, lift preferred embodiment, and conjunction with figs. is described in detail as follows to plasm display device among the present invention and driving method thereof.
Fig. 5 is among the present invention the 1st embodiment, the plasm display device synoptic diagram.
As shown in Figure 5, the plasm display device among the present invention the 1st embodiment comprises: at reseting period, during the location and during keeping, to keeper electrode (X 1To Xm), be separated into top scan electrode group (Y according to scanning sequency 1To Y N/2) and lower scan electrode group (Y N/2+1To Y n) scan electrode (Y 1To Yn) electrode Z is negative to add certain driving pulse to reach common keeping of connecting, and gas discharge takes place in discharge space, thus the plasma display of display image 500: the keeper electrode (X that in back substrate, forms 1To Xm) the digital drive portion 53 of data is provided; Drive top scan electrode group (Y 1To Y N/2) top scanning driving part 54A; Drive lower scan electrode group (Y N/2+1To Y n) lower scan drive division 54B; What electrode Z was kept in driving keeps drive division 55; Control the time schedule controller 56 of each drive division (53,54A, 54B, 55); The driving voltage generating unit 57 of driving voltage is provided to each drive division (53,54A, 54B, 55).
Below, the function and the effect of each ingredient of the plasm display device among the present invention the 1st embodiment is described in detail as follows.
At first, plasma display 500 has the discharge space that comprises inert gas by in the middle of front substrate and the back substrate, and keeps at a certain distance away and combine.Form a plurality of electrodes on the substrate of front, for example, scan electrode (Y 1To Yn) and to keep electrode Z right.At this moment, scan electrode (Y 1To Yn) according to scanning sequency, be divided into top scan electrode group (Y 1To Y N/2) and lower scan electrode group (Y N/2+1To Y n), and by following top scanning driving part 54A and lower scan drive division 54B driving.On the one hand, formed top scan electrode group (Y1 to Y on the back substrate N/2), lower scan electrode group (Y N/2+1To Yn) and and keep the keeper electrode (X that electrode Z intersects 1To Xm).
Digital drive portion 53 is by not shown contrary gamma compensated (reverse gamma compensation) loop, error diffusion (Error Diffusion) loop etc., after contrary gamma compensated (reverse gammacompensation) and error diffusion (Error Diffusion), by subdomain (sub-field) mapping loop (Mapping Circuit), provide mapping (Mapping) data to the subdomain of having set (sub-field) figure (pattern).Above-mentioned data-driven portion 53 is because the control of time schedule controller 56 after sampling (sampling) and locking (latch) data, offers keeper electrode (X with above-mentioned data 1To Xm).
Top scanning driving part 54A and lower scan drive division 54B are under the control of time schedule controller 56, at reseting period, for the initialization whole image, respectively to top scan electrode group (Y 1To Y N/2) and lower scan electrode group (Y N/2+1To Y n) negative simultaneously adding, comprise the rising edge waveform of slow rising and the reset wave of the slow negative edge waveform that descends.
Again, scanning driving part 54A in top is to top scan electrode group (Y 1To Y N/2) reset wave is provided after, during locating, in order to select scan line, to top scan electrode group (Y 1To Y N/2) negative successively the 1st scanning impulse that adds the 1st scan bias voltage Vsc1 and descend to negative polarity the 1st scanning voltage-Vy1 from the 1st scan bias voltage Vsc1.
Again, lower scan drive division 54B is to bottom scan electrode group (Y N/2+1To Yn) reset wave is provided after, during locating, in order to select scan line, to bottom scan electrode group (Y N/2+1To Y n) negative successively adding than little the 2nd scan bias voltage Vsc2 of the 1st scan bias voltage Vsc1 and the 2nd scanning impulse that descends to negative polarity the 2nd scanning voltage-Vy2 from the 2nd scan bias voltage Vsc2.
Again, top scanning driving part 54A and lower scan drive division 54B are during keeping, respectively to top scan electrode group (Y 1To Y N/2) and lower scan electrode group (Y N/2+1To Y n) provide, can make the pulse of keeping of keeping discharge in the cell (cell) selected during the location.
Keep drive division 55, control according to time schedule controller 56, during at least a portion of reseting period and during the location, provide and have other bias voltage of the voltage of keeping Vs level to keeping electrode Z, then, during keeping,, provide and have the voltage of keeping Vs level and else keep pulse to keeping electrode Z with top scanning driving part 54A and lower scan drive division 54B alternation.
Time schedule controller 56 receives the vertical/horizontal synchronizing signals, produce each drive division (53,54A, 54B, 55) required timing control signal (CTRX, CTRYT, CTRYB, CTRZ), and with above-mentioned timing control signal (CTRX, CTRYT, CTRYB, CTRZ) offer corresponding driving portion (53,54A, 54B, 55), thereby control each drive division (53,54A, 54B, 55). the negative timing control signal CTRX that is added in the digital drive portion 53, comprise: the sampling clock (sampling clock) of sampling (sampling) data, locking (latch) control signal, control energy reclaims the switch controlling signal of the ON/OFF sequential of loop and driving switch element.Negative timing control signal CTRYT and the timing control signal CTRYB that is added among top scanning driving part 54A and the lower scan drive division 54B comprises: the switch controlling signal of the energy recovery circuit in control top scanning driving part 54A and the lower scan drive division 54B and the ON/OFF sequential of driving switch element.Negative be added in the timing control signal CTRZ that keeps in the drive division 55, comprise: the switch controlling signal of the ON/OFF sequential of energy recovery circuit in the drive division 55 and driving switch element is kept in control.
Driving voltage generating unit 57 comprises: keep voltage Vs, rising edge ramp voltage Vst, the 1st scan bias voltage Vsc1, the 2nd scan bias voltage Vsc2, digital voltage Va, the 1st scanning voltage-Vy1, the 2nd scanning voltage-Vy2 etc., and produce each drive division (53,54A, 54B, 55) required various driving voltages.Above-mentioned driving voltage may be along with the structure of the composition of discharge gas or discharge cell (cell) and is changed.
Below, with reference to figure 6, the principle of work of the plasm display device among the present invention the 1st embodiment is described in detail as follows.
Fig. 6 is among the present invention the 1st embodiment, the drive waveforms synoptic diagram of plasm display device.
As shown in Figure 6, plasm display device among the present invention the 1st embodiment is divided into the reseting period RP of all cells of initialization (cell), selects AP during the location of discharge cell (cell), keep SP during the keeping of discharge condition of selected cell (cell), and drive.
Below, by during each, negative voltage and its function that adds is described in detail as follows.
At first, in reseting period RP, SU is simultaneously to all scan electrode (Y that are separated into top scan electrode group YT and lower scan electrode group YB according to scanning sequency during the rising edge 1To Yn), the negative rising edge oblique wave pulse PR that adds with positive polarity degree of tilt.Aforesaid rising edge oblique wave pulse PR is an example of rising edge waveform, can adopt the multiple waveform that is the rising state.Owing in the above-mentioned rising edge oblique wave pulse PR, the discharge cell of whole image (cell) more weak dark discharge (Dark Discharge) will take place.Since above-mentioned rising edge discharge, keeper electrode (X 1To Xm) and keep and will gather positive polarity wall electric charge on the electrode Z, will gather negative polarity wall electric charge on the scan electrode (Y1 to Yn).
Then, SD during the negative edge, on the one hand, simultaneously to all scan electrode (Y 1To Yn) negative add negative edge oblique wave pulse NR with negative polarity degree of tilt, on the other hand, have positive polarity and keep other bias voltage of voltage Vs level to keeping electrode Z negative adding.Keeper electrode (X 1To Xm) positive polarity wall electric charge keep intact, by keeping electrode Z and scan electrode (Y 1To Yn) between discharge, remove the part positive polarity wall electric charge keep electrode Z, simultaneously, accumulate in scan electrode (Y 1To Yn) on a large amount of negative polarity electric charges, by keeping electrode Z and scan electrode (Y 1To Yn) have respectively.
Since above-mentioned negative edge discharge, the residual equably wall electric charge that the quantity of orientation discharge can stably take place in cell (cell).
On the one hand, above-mentioned negative edge oblique wave pulse NR is an example of negative edge waveform, can adopt the multiple waveform that is the decline state.
Then, during the location preceding half section of AP, to negative the 1st scanning impulse SCNP1 that drops to the 1st scanning voltage-Vy1 from the 1st scan bias voltage Vsc1 that adds of top scan electrode group YT, therewith synchronously, to the negative digit pulse DP1 that rises to positive polarity digital voltage Va from ground voltage GND that adds of keeper electrode (X1 to Xm), keeper electrode (the X that the then potential difference (PD) between keeper electrode (X1 to Xm) and top scan electrode group YT, and the wall electric charge that forms owing to reseting period RP produces 1To Xm) and top scan electrode group YT between the wall voltage addition, thereby orientation discharge takes place.
The second half section of AP during the location, to negative the 2nd scanning impulse SCNP2 that drops to 2nd scanning voltage littler-Vy2 from the 2nd scan bias voltage Vsc2 littler that adds of bottom scan electrode group YB than the 1st scanning voltage-Vy1 than the 1st scan bias voltage Vsc1, therewith synchronously, to the negative digit pulse DP2 that rises to positive polarity digital voltage Va from ground voltage GND, the then keeper electrode (X of adding of keeper electrode (X1 to Xm) 1To Xm) and lower scan electrode group YB between potential difference (PD), and because keeper electrode (X1 to Xm) that the wall electric charge that reseting period RP forms produces and the wall voltage addition between lower scan electrode group YB, thus the generation orientation discharge.
As mentioned above, the rank that makes the 2nd scan bias voltage Vsc2 of AP second half section during the location than the location during the rank of preceding half section the 1st scan bias voltage Vsc1 of AP low, again, make the 2nd scanning voltage-Vy2 lower than the 1st scanning voltage-Vy1.Thereby AP is in the second half section during making the location, potential difference (PD) between keeper electrode (X1 to Xm) and lower scan electrode group YB than the location during before the AP in half section, keeper electrode (X 1To Xm) and top scan electrode group YT between potential difference (PD) big, thereby stronger orientation discharge takes place, and break off under hot environment AP second half section during the location that the loss of wall electric charge causes, the instability of orientation discharge in advance.
On the one hand, AP during the location is in order to reduce and scan electrode (Y 1To Yn) between potential difference (PD), prevent to misplace electricity with scan electrode (Y1 to Yn), provide and have positive polarity and keep other bias voltage of voltage Vs level to keeping electrode Z.
The 1st scan bias voltage Vsc1 and the 2nd scan bias voltage Vsc2 should be adjusted into positive polarity.As mentioned above, the 1st scan bias voltage Vsc1 and the 2nd scan bias voltage Vsc2 are adjusted into positive polarity, thereby can be during negative edge SD, under the condition of high temperature, more effectively keep the negative polarity wall electric charge that forms on top scan electrode group YT and the lower scan electrode group YB, prepare orientation discharge.
Reseting period RP should be adjusted into identical value to the minimum voltage-Vy1 of top scan electrode group YT and the negative pulse that adds of lower scan electrode group YB.As mentioned above, reseting period RP is adjusted into identical value to the minimum voltage-Vy1 of top scan electrode group YT and the negative pulse that adds of lower scan electrode group YB, thereby the voltage source of the minimum voltage of pulse can sharedly be provided, and can reduce the manufacturing expense of plasm display device.
AP should be adjusted into and the size (V that bears the 2nd scanning impulse SCNP2 that adds to bottom scan electrode group YB to the size (Vsc1+Vy1) of negative the 1st scanning impulse SCNP1 that adds of top scan electrode group YT during the location SC2+ Vy2) identical value.As mentioned above, with the size (V of the 1st scanning impulse SCNP1 SC1+ Vy1) with the size (V of the 2nd scanning impulse SCNP2 SC2+ Vy2) be adjusted into identical value, thus the rank of the scan pulse voltage at AP turntable driving IC two ends during can keeping locating suppresses turntable driving IC heating, guarantees stable driving.
Minimum voltage-Vy1 of the 1st scanning impulse SCNP1 should be adjusted into identical to the value of the minimum voltage-Vy1 of the negative pulse that adds of top scan electrode group YT with reseting period RP.As mentioned above, make minimum voltage-Vy1 of the 1st scanning impulse SCNP1 identical with the value that reseting period RP bears the minimum voltage-Vy1 that is added in the pulse on the scan electrode group YT of top, thereby the 1st scanning impulse SCNP1 and reseting period RP can sharedly be provided the voltage source to the minimum voltage of the negative pulse that adds of top scan electrode group YT, reduce the manufacturing expense of plasm display device.
Then, SP during keeping, to top scan electrode group YT and lower scan electrode group YB and keep electrode Z alternately negative add from ground voltage GND rise to keep voltage Vs keep pulse SUSP.During orientation discharge in the selected cell (cell), since the wall voltage in the cell (cell) with keep pulse SUSP addition, add when keeping pulse SUSP whenever negative, all at top scan electrode group YT and lower scan electrode group YB and keep between electrode Z and keep discharge, that is indication discharge.
As mentioned above, in the subdomain (sub-field), the driving process of the plasm display device among the present invention the 1st embodiment will be all over.
Plasm display device among the present invention the 1st embodiment, as above-mentioned detailed description: according to scanning sequency, on scan electrode is divided into, the lower scan electrode group makes during the location, and is lower than bearing the scan bias voltage rank that adds to bottom scan electrode group to the negative scan bias voltage that adds of top scan electrode group, thereby break off in advance under hot environment, the AP second half section during the location that the loss of wall electric charge causes, the instability of orientation discharge improves driving efficient.
Fig. 7 is among the present invention the 2nd embodiment, the plasm display device synoptic diagram.
As shown in Figure 7, the plasm display device among the present invention the 2nd embodiment comprises: at reseting period, during the location and during keeping, to keeper electrode (X 1To Xm), be separated into top scan electrode group (Y according to scanning sequency 1To Y N/2) and lower scan electrode group (Y N/2+1To Y n) scan electrode (Y 1To Yn) electrode Z is negative to add certain driving pulse to reach common keeping of connecting, and gas discharge takes place in discharge space, thus the plasma display of display image 700; Keeper electrode (the X that in back substrate (not shown), forms 1To Xm) the digital drive portion 73 of data is provided; Drive top scan electrode group (Y 1To Y N/2) top scanning driving part 74A; Drive lower scan electrode group (Y N/2+ 1 to Yn) lower scan drive division 74B; What electrode Z was kept in driving keeps drive division 75; Control the time schedule controller 76 of each drive division (53,54A, 54B, 55); The driving voltage generating unit 77 of driving voltage is provided to each drive division (53,54A, 54B, 55).
Below, the function and the effect of each ingredient of the plasm display device among the present invention the 2nd embodiment is described in detail as follows.
At first,, have the discharge space that comprises inert gas, and keep at a certain distance away and combine by in the middle of front substrate and the back substrate though plasma display 700 is not shown.Form a plurality of electrodes on the substrate of front, for example, scan electrode (Y 1To Yn) and to keep electrode Z right.At this moment, scan electrode (Y 1To Yn) according to scanning sequency, be divided into top scan electrode group (Y 1To Y N/2) and lower scan electrode group (Y N/2+1To Yn), and by following top scanning driving part 74A and lower scan drive division 74B driving.On the one hand, formed top scan electrode group (Y on the back substrate 1To Y N/2), lower scan electrode group (Y N/2+1To Yn) and and keep the keeper electrode (X that electrode Z intersects 1To Xm).
Digital drive portion 73 is by not shown contrary gamma compensated (reverse gamma compensation) loop, error diffusion (Error Diffusion) loop etc., after contrary gamma compensated (reverse gammacompensation) and error diffusion (Error Diffusion), by subdomain (sub-field) mapping loop (Mapping Circuit), provide mapping (Mapping) data to the subdomain of having set (sub-field) figure (pattern).Above-mentioned data-driven portion 73 is because the control of time schedule controller 76 after sampling (sampling) and locking (latch) data, offers keeper electrode (X1 to Xm) with above-mentioned data.
Top scanning driving part 74A and lower scan drive division 74B are under the control of time schedule controller 76, at reseting period, for the initialization whole image, respectively to top scan electrode group (Y 1To Y N/2) and lower scan electrode group (Y N/2+1To Yn) negative simultaneously adding, comprise the rising edge waveform of slow rising and the reset wave of the slow negative edge waveform that descends.
Again, scanning driving part 74A in top is to top scan electrode group (Y 1To Y N/2) reset wave is provided after, during locating, in order to select scan line, to top scan electrode group (Y 1To Y N/2) negative successively the 1st scan bias voltage V that adds 2SC1And from the 1st scan bias voltage V 2SC1The 1st scanning impulse to negative polarity the 1st scanning voltage-V2y1 decline.
Again, lower scan drive division 74B is to bottom scan electrode group (Y N/2+1To Yn) reset wave is provided after, during locating, in order to select scan line, to bottom scan electrode group (Y N/2+1To Yn) negative successively adding than the 1st scan bias voltage V 2SC1The 2nd big scan bias voltage V 2SC2And from the 2nd scan bias voltage V 2SC2The 2nd scanning impulse to negative polarity the 2nd scanning voltage-V2y2 decline.
Again, top scanning driving part 74A and lower scan drive division 74B are during keeping, respectively to top scan electrode group (Y 1To Y N/2) and lower scan electrode group (Y N/2+1To Yn) provide, can make the pulse of keeping of keeping discharge in the cell (cell) selected during the location.
Keep drive division 75, control according to time schedule controller 76, during at least a portion of reseting period and during the location, provide and have other bias voltage of the voltage of keeping Vs level to keeping electrode Z, then, during keeping,, provide and have the voltage of keeping Vs level and else keep pulse to keeping electrode Z with top scanning driving part 74A and lower scan drive division 74B alternation.
Time schedule controller 76 receives the vertical/horizontal synchronizing signals, produce each drive division (73,74A, 74B, 75) required timing control signal (CTRX, CTRYT, CTRYB, CTRZ), and with above-mentioned timing control signal (CTRX, CTRYT, CTRYB, CTRZ) offer corresponding driving portion (73,74A, 74B, 75), thereby control each drive division (73,74A, 74B, 75).The negative timing control signal CTRX that is added in the digital drive portion 73, comprise: the sampling clock (sampling clock) of sampling (sampling) data, locking (latch) control signal, control energy reclaims the switch controlling signal of the ON/OFF sequential of loop and driving switch element.Negative timing control signal (the CTRYT that is added among top scanning driving part 74A and the lower scan drive division 74B, CTRYB), comprise: the switch controlling signal of the energy recovery circuit in control top scanning driving part 74A and the lower scan drive division 74B and the ON/OFF sequential of driving switch element.Negative be added in the timing control signal CTRZ that keeps in the drive division 75, comprise: the switch controlling signal of the ON/OFF sequential of energy recovery circuit in the drive division 75 and driving switch element is kept in control.
Driving voltage generating unit 77 comprises: keep voltage Vs, rising edge ramp voltage Vst, the 1st scan bias voltage V 2SC1, the 2nd scan bias voltage V 2SC2, digital voltage Va, the 1st scanning voltage-V2y1, the 2nd scanning voltage-V2y2 etc., and produce the required various driving voltages of each drive division (73,74A, 74B, 75).Above-mentioned driving voltage may be along with the structure of the composition of discharge gas or discharge cell (cell) and is changed.
Below, with reference to figure 8, the principle of work of the plasm display device among the present invention the 2nd embodiment is described in detail as follows.
Fig. 8 is among the present invention the 2nd embodiment, the drive waveforms synoptic diagram of plasm display device.
As shown in Figure 8, plasm display device among the present invention the 2nd embodiment is divided into the reseting period RP of all cells of initialization (cell), selects AP during the location of discharge cell (cell), keep sP during the keeping of discharge condition of selected cell (cell), and drive.
Below, by during each, negative voltage and its function that adds is described in detail as follows.
At first, in reseting period RP, SU is simultaneously to all scan electrode (Y that are separated into top scan electrode group YT and lower scan electrode group YB according to scanning sequency during the rising edge 1To Yn), the negative rising edge oblique wave pulse PR that adds with positive polarity degree of tilt.Aforesaid rising edge oblique wave pulse PR is an example of rising edge waveform, can adopt the multiple waveform that is the rising state.Owing in the above-mentioned rising edge oblique wave pulse PR, the discharge cell of whole image (cell) more weak dark discharge (Dark Discharge) will take place.Since above-mentioned rising edge discharge, keeper electrode (X 1To Xm) and keep and will gather positive polarity wall electric charge, scan electrode (Y on the electrode Z 1To Yn) on will gather negative polarity wall electric charge.
Then, SD during the negative edge, on the one hand, simultaneously to all scan electrode (Y 1To Yn) negative add negative edge oblique wave pulse NR with negative polarity degree of tilt, on the other hand, have positive polarity and keep other bias voltage of voltage Vs level to keeping electrode Z negative adding.Keeper electrode (X 1To Xm) positive polarity wall electric charge keep intact, by keeping electrode Z and scan electrode (Y 1To Yn) between discharge, remove the part positive polarity wall electric charge keep electrode Z, simultaneously, accumulate in scan electrode (Y 1To Yn) on a large amount of negative polarity electric charges, by keeping electrode Z and scan electrode (Y 1To Yn) have respectively.
Since above-mentioned negative edge discharge, the residual equably wall electric charge that the quantity of orientation discharge can stably take place in cell (cell).
On the one hand, above-mentioned negative edge oblique wave pulse NR is an example of negative edge waveform, can adopt the multiple waveform that is the decline state.
Then, during the location preceding half section of AP, add from the 1st scan bias voltage V to top scan electrode group YT is negative 2SC1Drop to the 1st scanning impulse SCNP1 of the 1st scanning voltage-V2y1, therewith synchronously, to the negative digit pulse DP1 that rises to positive polarity digital voltage Va from ground voltage GND that adds of keeper electrode (X1 to Xm), the potential difference (PD) between keeper electrode (X1 to Xm) and top scan electrode group YT then, and because keeper electrode (X1 to Xm) that the wall electric charge that reseting period RP forms produces and the wall voltage addition between the scan electrode group YT of top, thereby the generation orientation discharge.
The second half section of AP during the location, add from than the 1st scan bias voltage V to bottom scan electrode group YB is negative 2SC1The 2nd big scan bias voltage V 2SC2Drop to the 2nd scanning impulse SCNP2 of 2nd scanning voltage bigger-V2y2 than the 1st scanning voltage-V2y1, therewith synchronously, to the negative digit pulse DP2 that rises to positive polarity digital voltage Va from ground voltage GND that adds of keeper electrode (X1 to Xm), the potential difference (PD) between keeper electrode (X1 to Xm) and lower scan electrode group YB then, and because keeper electrode (X1 to Xm) that the wall electric charge that reseting period RP forms produces and the wall voltage addition between lower scan electrode group YB, thereby the generation orientation discharge.
As mentioned above, make the 2nd scan bias voltage V of AP second half section during the location 2SC2Rank than the location during the 1st preceding half section scan bias voltage V of AP 2SC1The rank height.Through reseting period RP, utilize electrostatic attraction, making lower scan electrode group YB go up the negative polarity electric charge that forms on the negative polarity charge ratio top scan electrode group YT that forms maintains the original state more securely, thereby break off in advance under hot environment, the AP second half section during the location that the loss of wall electric charge causes, the instability of orientation discharge.
On the one hand, AP during the location is in order to reduce and scan electrode (Y 1To Yn) between potential difference (PD), prevent with scan electrode (Y 1To Yn) misplace electricity, provide and have positive polarity and keep other bias voltage of voltage Vs level to keeping electrode Z.
The 1st scan bias voltage V 2SC1With the 2nd scan bias voltage V 2SC2Should be adjusted into positive polarity.As mentioned above, with the 1st scan bias voltage V 2SC1With the 2nd scan bias voltage V 2SC2Be adjusted into positive polarity, thus can be during negative edge SD, under the condition of high temperature, more effectively keep the negative polarity wall electric charge that forms on top scan electrode group YT and the lower scan electrode group YB, prepare orientation discharge.
Reseting period RP should be adjusted into identical value to the minimum voltage-V2y1 of top scan electrode group YT and the negative pulse that adds of lower scan electrode group YB.As mentioned above, reseting period RP is adjusted into identical value to the minimum voltage-V2y1 of top scan electrode group YT and the negative pulse that adds of lower scan electrode group YB, thereby the voltage source of the minimum voltage of pulse can sharedly be provided, and can reduce the manufacturing expense of plasm display device.
AP is to the size (V of negative the 1st scanning impulse SCNP1 that adds of top scan electrode group YT during the location 2SC1+ V2y1) should be adjusted into and the identical value of size (V2SC2+V2y2) from the 2nd scanning impulse SCNP2 that adds to bottom scan electrode group YB that bear.As mentioned above, the size (VSC1+Vy1) of the 1st scanning impulse SCNP1 is adjusted into identical value with the size (V2SC2+V2y2) of the 2nd scanning impulse SCNP2, thereby the rank of the scan pulse voltage at AP turntable driving IC two ends during can keeping locating, suppress turntable driving IC heating, guarantee stable driving.
Minimum voltage-V2y1 of the 1st scanning impulse SCNP1 should be adjusted into identical to the value of the minimum voltage-V2y1 of the negative pulse that adds of top scan electrode group YT with reseting period RP.As mentioned above, make minimum voltage-V2y1 of the 1st scanning impulse SCNP1 identical with the value that reseting period RP bears the minimum voltage-V2y1 that is added in the pulse on the scan electrode group YT of top, thereby the 1st scanning impulse SCNP1 and reseting period RP can sharedly be provided the voltage source to the minimum voltage of the negative pulse that adds of top scan electrode group YT, reduce the manufacturing expense of plasm display device.
Then, SP during keeping, to top scan electrode group YT and lower scan electrode group YB and keep electrode Z alternately negative add from ground voltage GND rise to keep voltage Vs keep pulse SUSP.During orientation discharge in the selected cell (cell) and since the wall voltage in the cell (cell) with keep pulse SUSP addition, add when keeping pulse SUSP whenever negative, all on top and lower scan electrode group (YT, YB) and keep between electrode Z and keep discharge, that is, and the indication discharge.
As mentioned above, in the subdomain (sub-field), the driving process of the plasm display device among the present invention the 2nd embodiment will be all over.
Plasm display device among the present invention the 2nd embodiment, as above-mentioned detailed description: according to scanning sequency, on scan electrode is divided into, the lower scan electrode group makes during the location, bears the scan bias voltage rank height that adds to bottom scan electrode group to the negative scan bias voltage ratio that adds of top scan electrode group, thereby break off in advance under hot environment, the AP second half section during the location that the loss of wall electric charge causes, the instability of orientation discharge improves driving efficient.
Fig. 9 is among the present invention the 3rd embodiment, the plasm display device synoptic diagram.
As shown in Figure 9, the plasm display device among the present invention the 3rd embodiment comprises: at reseting period, during the location and during keeping, to keeper electrode (X 1To Xm), scan electrode (Y 1To Yn) electrode Z is negative to add certain driving pulse to reach common keeping of connecting, and gas discharge takes place in discharge space, thus the plasma display of display image 900; Keeper electrode (the X that in back substrate, forms 1To Xm) the digital drive portion 91 of data is provided; Driven sweep electrode (Y 1To Yn) scanning driving part 92; What electrode Z was kept in driving keeps drive division 93; Control the time schedule controller 94 of each drive division (91,92,93); The driving voltage generating unit 95 of driving voltage is provided to each drive division (91,92,93).
Below, the function and the effect of each ingredient of the plasm display device among the present invention the 3rd embodiment is described in detail as follows.
At first,, have the discharge space that comprises inert gas, and keep at a certain distance away and combine by in the middle of front substrate and the back substrate though plasma display 900 is not shown.Form a plurality of electrodes on the substrate of front, for example, scan electrode (Y 1To Yn) and to keep electrode Z right.On the one hand, formed scan electrode (Y on the back substrate 1To Yn) and and keep the keeper electrode (X that electrode Z intersects 1To Xm).
Digital drive portion 91 is by not shown contrary gamma compensated (reverse gamma compensation) loop, error diffusion (Error Diffusion) loop etc., after contrary gamma compensated (reverse gammacompensation) and error diffusion (Error Diffusion), by subdomain (sub-field) mapping loop (Mapping Circuit), provide mapping (Mapping) data to the subdomain of having set (sub-field) figure (pattern).Above-mentioned data-driven portion 91 is because the control of time schedule controller 94 after sampling (sampling) and locking (latch) data, offers keeper electrode (X with above-mentioned data 1To Xm).
Scanning driving part 92 at reseting period, for the initialization whole image, adds to scan electrode (Y1 to Yn) is negative simultaneously under the control of time schedule controller 94, comprises the rising edge waveform of slow rising and the reset wave of the negative edge waveform that slowly descends.
Again, scanning driving part 92 is after scan electrode (Y1 to Yn) provides reset wave, and during locating, in order to select scan line, preceding half section during locating successively adds from the 1st scan bias voltage V to scan electrode (Y1 to Yn) is negative 3SC1With the 1st scan bias voltage V 3SC1Drop to the 1st scanning impulse of negative polarity the 1st scanning voltage-V3y1; Second half section during locating, add from than the 1st scan bias voltage V to scan electrode Y1 to Yn is negative 3SC1The 2nd little scan bias voltage V 3SC2Drop to the 2nd scanning impulse of negative polarity the 2nd scanning voltage-V3y2.
Again, scanning driving part 92 is during keeping, and (Y1 to Yn) provides to scan electrode, can make the pulse of keeping of keeping discharge in the cell (cell) selected during the location.
Keep drive division 93, control according to time schedule controller 94, during at least a portion of reseting period and during the location, provide and have other bias voltage of the voltage of keeping Vs level to keeping electrode Z, then, during keeping,, provide and have the voltage of keeping Vs level and else keep pulse to keeping electrode Z with scanning driving part 92 alternations.
Time schedule controller 94 receives the vertical/horizontal synchronizing signal, produces each drive division (91,92,93) required timing control signal (CTRX, CTRY, CTRZ), and with above-mentioned timing control signal (CTRX, CTRY CTRZ) offers corresponding driving portion (91,92,93), thereby control each drive division (91,92,93).The negative timing control signal CTRX that is added in the digital drive portion 91, comprise: the sampling clock (sampling clock) of sampling (sampling) data, locking (latch) control signal, control energy reclaims the switch controlling signal of the ON/OFF sequential of loop and driving switch element.The negative timing control signal CTRY that is added in the scanning driving part 92 comprises: the switch controlling signal of the energy recovery circuit in the gated sweep drive division 92 and the ON/OFF sequential of driving switch element.Negative be added in the timing control signal CTRZ that keeps in the drive division 93, comprise: the switch controlling signal of the ON/OFF sequential of energy recovery circuit in the drive division 93 and driving switch element is kept in control.
Driving voltage generating unit 95 comprises: keep voltage Vs, rising edge ramp voltage VST, the 1st scan bias voltage V 3SC1, the 2nd scan bias voltage V 3SC2, digital voltage Va, the 1st scanning voltage-V3y1, the 2nd scanning voltage-V3y2 etc., and produce the required various driving voltages of each drive division (91,92,93).Above-mentioned driving voltage may be along with the structure of the composition of discharge gas or discharge cell (cell) and is changed.
Below, with reference to Figure 10, the principle of work of the plasm display device among the present invention the 3rd embodiment is described in detail as follows.
Figure 10 is among the present invention the 3rd embodiment, the drive waveforms synoptic diagram of plasm display device.
As shown in figure 10, plasm display device among the present invention the 3rd embodiment is divided into the reseting period RP of all cells of initialization (cell), selects AP during the location of discharge cell (cell), keep SP during the keeping of discharge condition of selected cell (cell), and drive.
Below, by during each, negative voltage and its function that adds is described in detail as follows.
At first, in reseting period RP, SU is simultaneously to all scan electrode (Y during the rising edge 1To Yn), the negative rising edge oblique wave pulse PR that adds with positive polarity degree of tilt.Aforesaid rising edge oblique wave pulse PR is an example of rising edge waveform, can adopt the multiple waveform that is the rising state.Owing in the above-mentioned rising edge oblique wave pulse PR, the discharge cell of whole image (cell) more weak dark discharge (DarkDischarge) will take place.Because the discharge of above-mentioned rising edge, keeper electrode X will gather positive polarity wall electric charge with keeping on the electrode Z, will gather negative polarity wall electric charge on the scan electrode Y.
Then, SD during the negative edge, on the one hand, simultaneously to all scan electrode (Y 1To Yn) negative add negative edge oblique wave pulse NR with negative polarity degree of tilt, on the other hand, have positive polarity and keep other bias voltage of voltage Vs level to keeping electrode Z negative adding.The positive polarity wall electric charge of keeper electrode X is kept intact, by keeping the discharge between electrode Z and scan electrode Y, remove the part positive polarity wall electric charge of keeping electrode Z, simultaneously, accumulate in a large amount of negative polarity electric charges on the scan electrode Y, by keeping electrode Z and scan electrode Y has respectively.
Since above-mentioned negative edge discharge, the residual equably wall electric charge that the quantity of orientation discharge can stably take place in cell (cell).
On the one hand, above-mentioned negative edge oblique wave pulse NR is an example of negative edge waveform, can adopt the multiple waveform that is the decline state.
Then, preceding half section 1st AP of AP during the location adds from the 1st scan bias voltage V to scan electrode Y is negative 3SC1Drop to the 1st scanning impulse SCNP1 of the 1st scanning voltage-V3y1, therewith synchronously, to the negative digit pulse DP1 that rises to positive polarity digital voltage Va from ground voltage GND that adds of keeper electrode (X1 to Xm), the potential difference (PD) between keeper electrode (X1 to Xm) and scan electrode Y then, and because keeper electrode (X1 to Xm) that the wall electric charge that reseting period RP forms produces and the wall voltage addition between scan electrode Y, thereby the generation orientation discharge.
The second half section 2nd AP of AP during the location adds from than the 1st scan bias voltage V to scan electrode Y is negative 3SC1The 2nd little scan bias voltage V 3SC2Drop to the 2nd scanning impulse SCNP2 of 2nd scanning voltage littler-V3y2 than the 1st scanning voltage-Vy1, therewith synchronously, to the negative digit pulse DP2 that rises to positive polarity digital voltage Va from ground voltage GND that adds of keeper electrode (X1 to Xm), the potential difference (PD) between keeper electrode (X1 to Xm) and scan electrode Y then, and because keeper electrode (X1 to Xm) that the wall electric charge that reseting period RP forms produces and the wall voltage addition between scan electrode Y, thereby the generation orientation discharge.
As mentioned above, make the 2nd scan bias voltage V of AP second half section 2nd AP during the location 3SC2Rank than the location during the 1st scan bias voltage V of the preceding half section 1st AP of AP 3SC1Rank low.Make the 2nd scanning voltage-V3y2 lower than the 1st scanning voltage-V3y1 again.Thereby make during the location among the AP second half section 2nd AP, potential difference (PD) between keeper electrode (X1 to Xm) and scan electrode Y than the location during before the AP among half section 1st AP, potential difference (PD) between keeper electrode (X1 to Xm) and scan electrode Y is big, thereby stronger orientation discharge takes place, and break off in advance under hot environment, AP second half section 2nd AP during the location that the loss of wall electric charge causes, the instability of orientation discharge.
On the one hand, AP during the location, for reduce and scan electrode Y between potential difference (PD), prevent to misplace electricity with scan electrode Y, provide and have positive polarity and keep other bias voltage of voltage Vs level to keeping electrode Z.
The 1st scan bias voltage V 3SC1With the 2nd scan bias voltage V 3SC2Should be adjusted into positive polarity.As mentioned above, with the 1st scan bias voltage V 3SC1With the 2nd scan bias voltage V 3SC2Be adjusted into positive polarity, thus can be during negative edge SD, utilize electrostatic attraction, under hot environment, more effectively keep scan electrode Y to go up the negative polarity electric charge that forms, prepare orientation discharge.
Preceding half section 1st AP of AP during the location, the second half section 2nd AP of AP during the size (V3SC1+V3y1) of negative the 1st scanning impulse SCNP1 that adds of scan electrode Y should be adjusted into and locate is to the size (V of negative the 2nd scanning impulse SCNP2 that adds of scan electrode Y 3SC2+ V3y2) identical value.As mentioned above, with the size (V of the 1st scanning impulse SCNP1 3SC1+ V3y1) with the size (V of the 2nd scanning impulse SCNP2 3SC2+ V3y2) be adjusted into identical value, thus the rank of the scan pulse voltage at AP turntable driving IC two ends during can keeping locating suppresses turntable driving IC heating, guarantees stable driving.
Minimum voltage-V3y1 of the 1st scanning impulse SCNP1 should be adjusted into identical to the value of the minimum voltage-V3y1 of the negative pulse that adds of scan electrode Y with reseting period RP.As mentioned above, make minimum voltage-V3y1 of the 1st scanning impulse SCNP1 identical with the value that reseting period RP bears the minimum voltage-V3y1 that is added in the pulse on the scan electrode Y, thereby the 1st scanning impulse SCNP1 and reseting period RP can sharedly be provided the voltage source to the minimum voltage of the negative pulse that adds of scan electrode Y, reduce the manufacturing expense of plasm display device.
Then, SP during keeping, to scan electrode Y with keep electrode Z alternately negative add from ground voltage GND rise to keep voltage Vs keep pulse SUSP.During orientation discharge in the selected cell (cell) and since the wall voltage in the cell (cell) with keep pulse SUSP addition, add when keeping pulse SUSP whenever negative, all at scan electrode Y with keep between electrode Z and keep discharge, that is, indicate and discharge.
As mentioned above, in the subdomain (sub-field), the driving process of the plasm display device among the present invention the 3rd embodiment will be all over.
Plasm display device among the present invention the 3rd embodiment, as above-mentioned detailed description: make preceding half section during the location, second half section during the negative scan bias voltage that adds of scan electrode is than the location, low to the negative scan bias voltage rank that adds of scan electrode, thereby break off in advance under hot environment, the AP second half section during the location that the loss of wall electric charge causes, the instability of orientation discharge improves driving efficient.
Figure 11 is among the present invention the 4th embodiment, the plasm display device synoptic diagram.
As shown in figure 11, plasm display device among the present invention the 4th embodiment, comprise: at reseting period, during the location and during keeping, to keeper electrode (X1 to Xm), electrode Z is negative to add certain driving pulse for scan electrode (Y1 to Yn) and common keeping of connecting, and gas discharge takes place in discharge space, thus the plasma display of display image 1100; The keeper electrode (X1 to Xm) that forms in back substrate provides the digital drive portion 1101 of data; The scanning driving part 1102 of driven sweep electrode (Y1 to Yn); What electrode Z was kept in driving keeps drive division 1103; Control the time schedule controller 1104 of each drive division (1101,1102,1103); The driving voltage generating unit 1105 of driving voltage is provided to each drive division (1101,1102,1103).
Below, the function and the effect of each ingredient of the plasm display device among the present invention the 4th embodiment is described in detail as follows.
At first,, have the discharge space that comprises inert gas, and keep at a certain distance away and combine by in the middle of front substrate and the back substrate though plasma display 1100 is not shown.Form a plurality of electrodes on the substrate of front, for example, scan electrode (Y1 to Yn) and to keep electrode Z right.On the one hand, formed on the back substrate scan electrode (Y1 to Yn) and and keep the keeper electrode (X1 to Xm) that electrode Z intersects.
Digital drive portion 1101 is by not shown contrary gamma compensated (reverse gamma compensation) loop, error diffusion (Error Diffusion) loop etc., after contrary gamma compensated (reverse gammacompensation) and error diffusion (Error Diffusion), by subdomain (sub-field) mapping loop (Mapping Circuit), provide mapping (Mapping) data to the subdomain of having set (sub-field) figure (pattern).Above-mentioned data-driven portion 1101 is because the control of time schedule controller 1104 after sampling (sampling) and locking (latch) data, offers keeper electrode (X1 to Xm) with above-mentioned data.
Scanning driving part 1102 at reseting period, for the initialization whole image, adds to scan electrode (Y1 to Yn) is negative simultaneously under the control of time schedule controller 1104, comprises the rising edge waveform of slow rising and the reset wave of the negative edge waveform that slowly descends.
Again, scanning driving part 1102 is after scan electrode (Y1 to Yn) provides reset wave, and during locating, in order to select scan line, preceding half section during locating successively adds from the 1st scan bias voltage V to scan electrode (Y1 to Yn) is negative 4SC1With the 1st scan bias voltage V 4SC1Drop to the 1st scanning impulse of negative polarity the 1st scanning voltage-V4y1; Second half section during locating, add from than the 1st scan bias voltage V to scan electrode (Y1 to Yn) is negative 4SC1The 2nd little scan bias voltage V 4SC2Drop to the 2nd scanning impulse of negative polarity the 2nd scanning voltage-V4y2.
Again, scanning driving part 1102 is during keeping, and (Y1 to Yn) provides to scan electrode, can make the pulse of keeping of keeping discharge in the cell (cell) selected during the location.
Keep drive division 1103, control according to time schedule controller 1104, during at least a portion of reseting period and during the location, provide and have other bias voltage of the voltage of keeping Vs level to keeping electrode Z, then, during keeping,, provide and have the voltage of keeping Vs level and else keep pulse to keeping electrode Z with scanning driving part 1102 alternations.
Time schedule controller 1104 receives the vertical/horizontal synchronizing signal, produces each drive division (1101,1102,1103) required timing control signal (CTRX, CTRY, CTRZ), and with above-mentioned timing control signal (CTRX, CTRY CTRZ) offers corresponding driving portion (1101,1102,1103), thereby control each drive division (1101,1102,1103).The negative timing control signal CTRX that is added in the digital drive portion 1101, comprise: the sampling clock (sampling clock) of sampling (sampling) data, locking (latch) control signal, control energy reclaims the switch controlling signal of the ON/OFF sequential of loop and driving switch element.The negative timing control signal CTRY that is added in the scanning driving part 1102 comprises: the switch controlling signal of the energy recovery circuit in the gated sweep drive division 1102 and the ON/OFF sequential of driving switch element.Negative be added in the timing control signal CTRZ that keeps in the drive division 1103, comprise: the switch controlling signal of the ON/OFF sequential of energy recovery circuit in the drive division 1103 and driving switch element is kept in control.
Driving voltage generating unit 1105 comprises: keep voltage Vs, rising edge ramp voltage Vst, the 1st scan bias voltage V 4SC1, the 2nd scan bias voltage (V4SC2), digital voltage Va, the 1st scanning voltage-V4y1, the 2nd scanning voltage-V4y2 etc., and produce the required various driving voltages of each drive division (1101,1102,1103).Above-mentioned driving voltage may be along with the structure of the composition of discharge gas or discharge cell (cell) and is changed.
Below, with reference to Figure 12, the principle of work of the plasm display device among the present invention the 4th embodiment is described in detail as follows.
Figure 12 is among the present invention the 4th embodiment, the drive waveforms synoptic diagram of plasm display device.
As shown in figure 12, plasm display device among the present invention the 4th embodiment is divided into the reseting period RP of all cells of initialization (cell), selects AP during the location of discharge cell (cell), keep SP during the keeping of discharge condition of selected cell (cell), and drive.
Below, by during each, negative voltage and its function that adds is described in detail as follows.
At first, in reseting period RP, during the rising edge SU simultaneously to all scan electrodes (Y1 to Yn), the negative rising edge oblique wave pulse PR that adds with positive polarity degree of tilt.Aforesaid rising edge oblique wave pulse PR is an example of rising edge waveform, can adopt the multiple waveform that is the rising state.Owing in the above-mentioned rising edge oblique wave pulse PR, the discharge cell of whole image (cell) more weak dark discharge (DarkDischarge) will take place.Because the discharge of above-mentioned rising edge, keeper electrode X will gather positive polarity wall electric charge with keeping on the electrode Z, will gather negative polarity wall electric charge on the scan electrode Y.
Then, SD during the negative edge on the one hand, simultaneously adds the negative edge oblique wave pulse NR with negative polarity degree of tilt to all scan electrodes (Y1 to Yn) are negative, on the other hand, has positive polarity and keeps other bias voltage of voltage Vs level to keeping electrode Z negative adding.The positive polarity wall electric charge of keeper electrode X is kept intact, by keeping the discharge between electrode Z and scan electrode Y, remove the part positive polarity wall electric charge of keeping electrode Z, simultaneously, accumulate in a large amount of negative polarity electric charges on the scan electrode Y, by keeping electrode Z and scan electrode Y has respectively.
Since above-mentioned negative edge discharge, the residual equably wall electric charge that the quantity of orientation discharge can stably take place in cell (cell).
On the one hand, above-mentioned negative edge oblique wave pulse NR is an example of negative edge waveform, can adopt the multiple waveform that is the decline state.
Then, preceding half section 1st AP of AP during the location adds from the 1st scan bias voltage V to scan electrode Y is negative 4SC1Drop to the 1st scanning impulse SCNP1 of the 1st scanning voltage-V4y1, therewith synchronously, to the negative digit pulse DP1 that rises to positive polarity digital voltage Va from ground voltage GND that adds of keeper electrode (X1 to Xm), the potential difference (PD) between keeper electrode (X1 to Xm) and scan electrode Y then, and because keeper electrode (X1 to Xm) that the wall electric charge that reseting period RP forms produces and the wall voltage addition between scan electrode Y, thereby the generation orientation discharge.
The second half section 2nd AP of AP during the location adds from than the 1st scan bias voltage V to scan electrode Y is negative 4SC1The 2nd big scan bias voltage V 4SC2Drop to the 2nd scanning impulse SCNP2 of 2nd scanning voltage bigger-V4y2 than the 1st scanning voltage-V4y1, therewith synchronously, to the negative digit pulse DP2 that rises to positive polarity digital voltage Va from ground voltage GND that adds of keeper electrode (X1 to Xm), the potential difference (PD) between keeper electrode (X1 to Xm) and scan electrode Y then, and because keeper electrode (X1 to Xm) that the wall electric charge that reseting period Rp forms produces and the wall voltage addition between scan electrode Y, thereby the generation orientation discharge.
As mentioned above, make the 2nd scan bias voltage V of AP second half section 2nd AP during the location 4SC2Rank than the location during the 1st scan bias voltage V of the preceding half section 1st AP of AP 4SC1Rank low.Through reseting period RP, utilize electrostatic attraction, more effectively keep scan electrode Y to go up the negative polarity electric charge that forms, thereby break off under hot environment AP second half section during the location that the loss of wall electric charge causes, the instability of orientation discharge in advance.
On the one hand, AP during the location, for reduce and scan electrode Y between potential difference (PD), prevent to misplace electricity with scan electrode Y, provide and have positive polarity and keep other bias voltage of voltage Vs level to keeping electrode Z.
The 1st scan bias voltage V 4SC1With the 2nd scan bias voltage V 4SC2Should be adjusted into positive polarity.As mentioned above, with the 1st scan bias voltage V 4SC1With the 2nd scan bias voltage V 4SC2Be adjusted into positive polarity, thus can be during negative edge SD, utilize electrostatic attraction, under hot environment, more effectively keep scan electrode Y to go up the negative polarity electric charge that forms, prepare orientation discharge.
Preceding half section 1st AP of AP during the location is to the size (V of negative the 1st scanning impulse SCNP1 that adds of scan electrode Y 4SC1+ V4y1) should be adjusted into and locate during the second half section 2nd AP of AP, to the size (V of negative the 2nd scanning impulse SCNP2 that adds of scan electrode Y 4SC2+ V4y2) identical value.As mentioned above, with the size (V of the 1st scanning impulse SCNP1 4SC1+ V4y1) with the size (V of the 2nd scanning impulse SCNP2 4SC2+ V4y2) be adjusted into identical value, thus the rank of the scan pulse voltage at AP turntable driving IC two ends during can keeping locating suppresses turntable driving IC heating, guarantees stable driving.
Minimum voltage-V4y1 of the 1st scanning impulse SCNP1 should be adjusted into identical to the value of the minimum voltage-V4y1 of the negative pulse that adds of scan electrode Y with reseting period RP.As mentioned above, make minimum voltage-V4y1 of the 1st scanning impulse SCNP1 identical with the value that reseting period RP bears the minimum voltage-V4y1 that is added in the pulse on the scan electrode Y, thereby the 1st scanning impulse SCNP1 and reseting period RP can sharedly be provided the voltage source to the minimum voltage of the negative pulse that adds of scan electrode Y, reduce the manufacturing expense of plasm display device.
Then, SP during keeping, to scan electrode Y with keep electrode Z alternately negative add from ground voltage GND rise to keep voltage Vs keep pulse SUSP.During orientation discharge in the selected cell (cell) and since the wall voltage in the cell (cell) with keep pulse SUSP addition, add when keeping pulse SUSP whenever negative, all at scan electrode Y with keep between electrode Z and keep discharge, that is, indicate and discharge.
As mentioned above, in the subdomain (sub-field), the driving process of the plasm display device among the present invention the 4th embodiment will be all over.
Plasm display device among the present invention the 4th embodiment, as above-mentioned detailed description: make preceding half section during the location, second half section during the negative scan bias voltage that adds of scan electrode is than the location, to the negative scan bias voltage rank height that adds of scan electrode, thereby break off in advance under hot environment, the AP second half section during the location that the loss of wall electric charge causes, the instability of orientation discharge improves driving efficient.
The driving method of the plasm display device among the present invention the 1st to the 4th embodiment, with as above describe in detail, plasm display device among the present invention the 1st to the 4th embodiment, drive with identical principle, therefore, use explanation to substitute to this detailed description to the plasm display device among the present invention the 1st to the 4th embodiment.
As mentioned above; though the present invention about plasm display device and driving method thereof with preferred embodiment openly as above; right its is not in order to limit the present invention; any those skilled in the art; under the situation that does not break away from the spirit and scope of the present invention; various changes and the modification carried out, all employings are equal to the technical scheme that form obtained of replacement or equivalent transformation, all drop within the protection domain of the presently claimed invention.

Claims (36)

1, plasm display device is characterized in that it comprises:
(1) comprises the plasma display that is separated into the scan electrode of top and lower scan electrode group according to scanning sequency;
(2) during locating, to the negative top scanning driving part that adds the 1st scan bias voltage of top scan electrode group; And
(3) to the negative lower scan drive division that adds 2nd scan bias voltage littler of bottom scan electrode group than the 1st scan bias voltage.
2, plasm display device according to claim 1 is characterized in that described the 1st scan bias voltage and described the 2nd scan bias voltage are positive polarity.
3, plasm display device according to claim 2 is characterized in that reseting period, and is equal to the minimum voltage of described top and the negative pulse that adds of lower scan electrode group.
4, plasm display device according to claim 3, it is characterized in that during the described location, to the size of negative the 1st scanning impulse that adds of described top scan electrode group, big or small identical with to negative the 2nd scanning impulse that adds of described lower scan electrode group.
5, plasm display device according to claim 4 is characterized in that the minimum voltage of described the 1st scanning impulse, and is with described reseting period, identical to the minimum voltage of the negative pulse that adds of described top scan electrode group.
6, plasm display device is characterized in that it comprises:
(1) comprises the plasma display that is separated into the scan electrode of top and lower scan electrode group according to scanning sequency;
(2) during locating, to the negative top scanning driving part that adds the 1st scan bias voltage of top scan electrode group; And
(3) to the negative lower scan drive division that adds 2nd scan bias voltage bigger of bottom scan electrode group than the 1st scan bias voltage.
7, plasm display device according to claim 6 is characterized in that described the 1st scan bias voltage and described the 2nd scan bias voltage are positive polarity.
8, plasm display device according to claim 7 is characterized in that reseting period, and is equal to the minimum voltage of above-mentioned top and the negative pulse that adds of lower scan electrode group.
9, plasm display device according to claim 8 is characterized in that during the described location, to the size of negative the 1st scanning impulse that adds of described top scan electrode group, and big or small identical with to negative the 2nd scanning impulse that adds of described lower scan electrode group.
10, plasm display device according to claim 9 is characterized in that the minimum voltage of described the 1st scanning impulse, and is with described reseting period, identical to the minimum voltage of the negative pulse that adds of described top scan electrode group.
11, plasm display device is characterized in that it comprises:
(1) comprises the plasma display of scan electrode;
(2) preceding half section during locating adds the 1st scan bias voltage to above-mentioned scan electrode is negative, and the second half section during above-mentioned location, to the negative scanning driving part that adds 2nd scan bias voltage littler of above-mentioned scan electrode than above-mentioned the 1st scan bias voltage.
12, plasm display device according to claim 11 is characterized in that described the 1st scan bias voltage and described the 2nd scan bias voltage are positive polarity.
13, plasm display device according to claim 12, it is characterized in that preceding half section during the described location, size to negative the 1st scanning impulse that adds of described scan electrode, with the second half section during the described location, big or small identical to negative the 2nd scanning impulse that adds of described scan electrode.
14, plasm display device according to claim 13 is characterized in that the minimum voltage of described the 1st scanning impulse, and is with described reseting period, identical to the minimum voltage of the negative pulse that adds of described scan electrode.
15, plasm display device is characterized in that it comprises:
(1) comprises the plasma display of scan electrode;
(2) preceding half section during locating adds the 1st scan bias voltage to above-mentioned scan electrode is negative, and the second half section during above-mentioned location, to the negative scanning driving part that adds 2nd scan bias voltage bigger of above-mentioned scan electrode than above-mentioned the 1st scan bias voltage.
16, plasm display device according to claim 15 is characterized in that described the 1st scan bias voltage and described the 2nd scan bias voltage are positive polarity.
17, plasm display device according to claim 16, it is characterized in that preceding half section during the described location, size to negative the 1st scanning impulse that adds of described scan electrode, with the second half section during the described location, big or small identical to negative the 2nd scanning impulse that adds of described scan electrode.
18, plasm display device according to claim 17 is characterized in that the minimum voltage of described the 1st scanning impulse, and is with described reseting period, identical to the minimum voltage of the negative pulse that adds of described scan electrode.
19, the driving method of plasm display device is characterized in that this method is divided into reseting period respectively for a plurality of subdomains, during the location and during keeping, and is the unit display image by the frame that above-mentioned subdomain combines, and it comprises:
(1) during locating, to comprising the top scan electrode group of plasma display who is separated into the scan electrode of top and lower scan electrode group according to scanning sequency, the negative stage that adds the 1st scan bias voltage; And
(2) to the negative stage that adds 2nd scan bias voltage littler of bottom scan electrode group than the 1st scan bias voltage.
20, the driving method of plasm display device according to claim 19 is characterized in that described the 1st scan bias voltage and above-mentioned the 2nd scan bias voltage are positive polarity.
21, the driving method of plasm display device according to claim 20 is characterized in that described reseting period, and is equal to the minimum voltage of described top and the negative pulse that adds of lower scan electrode group.
22, the driving method of plasm display device according to claim 21, it is characterized in that during the described location, to the size of negative the 1st scanning impulse that adds of described top scan electrode group, big or small identical with to negative the 2nd scanning impulse that adds of described lower scan electrode group.
23, the driving method of plasm display device according to claim 22 is characterized in that the minimum voltage of described the 1st scanning impulse, and is with described reseting period, identical to the minimum voltage of the negative pulse that adds of described top scan electrode group.
24, the driving method of plasm display device is characterized in that this method is divided into reseting period respectively for a plurality of subdomains, during the location and during keeping, and is the unit display image by the frame that above-mentioned subdomain combines, and it comprises:
(1) during locating, to comprising the top scan electrode group of plasma display who is separated into the scan electrode of top and lower scan electrode group according to scanning sequency, the negative stage that adds the 1st scan bias voltage; And
(2) to the negative stage that adds 2nd scan bias voltage bigger of bottom scan electrode group than the 1st scan bias voltage.
25, the driving method of plasm display device according to claim 24 is characterized in that described the 1st scan bias voltage and above-mentioned the 2nd scan bias voltage are positive polarity.
26, the driving method of plasm display device according to claim 25 is characterized in that described reseting period, and is equal to the minimum voltage of described top and the negative pulse that adds of lower scan electrode group.
27, the driving method of plasm display device according to claim 26, it is characterized in that during the described location, to the size of negative the 1st scanning impulse that adds of described top scan electrode group, big or small identical with to negative the 2nd scanning impulse that adds of described lower scan electrode group.
28, the driving method of plasm display device according to claim 27 is characterized in that the minimum voltage of described the 1st scanning impulse, and is with described reseting period, identical to the minimum voltage of the negative pulse that adds of described top scan electrode group.
29, the driving method of plasm display device is characterized in that this method is divided into reseting period respectively for a plurality of subdomains, during the location and during keeping, and is the unit display image by the frame that above-mentioned subdomain combines, and it comprises:
(1) preceding half section during locating is to the negative stage that adds the 1st scan bias voltage of scan electrode; And
(2) second half section during the location, the negative stage that adds 2nd scan bias voltage littler than the 1st scan bias voltage.
30, the driving method of plasm display device according to claim 29 is characterized in that described the 1st scan bias voltage and described the 2nd scan bias voltage are positive polarity.
31, the driving method of plasm display device according to claim 30, it is characterized in that preceding half section during the described location, size to negative the 1st scanning impulse that adds of described scan electrode, with the second half section during the described location, big or small identical to negative the 2nd scanning impulse that adds of described scan electrode.
32, the driving method of plasm display device according to claim 31 is characterized in that the minimum voltage of described the 1st scanning impulse, and is with described reseting period, identical to the minimum voltage of the negative pulse that adds of described scan electrode.
33, the driving method of plasm display device is characterized in that this method is divided into reseting period respectively for a plurality of subdomains, during the location and during keeping, and is the unit display image by the frame that above-mentioned subdomain combines, and it comprises:
(1) preceding half section during locating is to the negative stage that adds the 1st scan bias voltage of scan electrode; And
(2) second half section during the location, the negative stage that adds 2nd scan bias voltage bigger than the 1st scan bias voltage.
34, the driving method of plasm display device according to claim 33 is characterized in that described the 1st scan bias voltage and described the 2nd scan bias voltage are positive polarity.
35, the driving method of plasm display device according to claim 34, it is characterized in that preceding half section during the described location, size to negative the 1st scanning impulse that adds of described scan electrode, with the second half section during the described location, big or small identical to negative the 2nd scanning impulse that adds of described scan electrode.
36, the driving method of plasm display device according to claim 35 is characterized in that the minimum voltage of described the 1st scanning impulse, and is with described reseting period, identical to the minimum voltage of the negative pulse that adds of described scan electrode.
CNA2006101394504A 2005-09-30 2006-09-22 Plasma display device and its driving method Pending CN1924972A (en)

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Cited By (2)

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WO2014012247A1 (en) * 2012-07-20 2014-01-23 Shenzhen Yunyinggu Technology Co., Ltd. Field sequential color display and driving method thereof
US9867326B2 (en) 2012-12-07 2018-01-16 Institute Of Science, Chinese Academy Of Sciences Cold plasma seed treatment device

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KR102274920B1 (en) 2015-02-02 2021-07-09 삼성디스플레이 주식회사 Display devices

Cited By (3)

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Publication number Priority date Publication date Assignee Title
WO2014012247A1 (en) * 2012-07-20 2014-01-23 Shenzhen Yunyinggu Technology Co., Ltd. Field sequential color display and driving method thereof
CN104471634A (en) * 2012-07-20 2015-03-25 深圳云英谷科技有限公司 Field sequential color display
US9867326B2 (en) 2012-12-07 2018-01-16 Institute Of Science, Chinese Academy Of Sciences Cold plasma seed treatment device

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